init xsteam

.gitignore

@@ -0,0 +1,58 @@
+# These are some examples of commonly ignored file patterns.
+# You should customize this list as applicable to your project.
+# Learn more about .gitignore:
+#     https://www.atlassian.com/git/tutorials/saving-changes/gitignore
+
+# Node artifact files
+node_modules/
+dist/
+/build
+build/
+release/
+/release
+
+# Compiled Java class files
+*.class
+
+# Compiled Python bytecode
+*.py[cod]
+
+# Log files
+*.log
+
+# Package files
+*.jar
+
+# Maven
+target/
+dist/
+
+# JetBrains IDE
+.idea/
+
+# Unit test reports
+TEST*.xml
+
+# Generated by MacOS
+.DS_Store
+
+# Generated by Windows
+Thumbs.db
+
+# Applications
+*.app
+*.war
+
+# Large media files
+*.mp4
+*.tiff
+*.avi
+*.flv
+*.mov
+*.wmv
+
+#屏蔽zvo测试数据
+*.zvo
+*.torrent
+*.m3u8
+

.vscode/launch.json

@@ -0,0 +1,7 @@
+{
+    // 使用 IntelliSense 了解相关属性。 
+    // 悬停以查看现有属性的描述。
+    // 欲了解更多信息，请访问: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": []
+}

.vscode/settings.json

@@ -0,0 +1,114 @@
+{
+    "cmake.configureOnOpen": false,
+    "files.associations": {
+        "qframe": "cpp",
+        "stop_token": "cpp",
+        "memory": "cpp",
+        "semaphore": "cpp",
+        "condition_variable": "cpp",
+        "qtabbar": "cpp",
+        "any": "cpp",
+        "array": "cpp",
+        "atomic": "cpp",
+        "bit": "cpp",
+        "*.tcc": "cpp",
+        "bitset": "cpp",
+        "cctype": "cpp",
+        "chrono": "cpp",
+        "clocale": "cpp",
+        "cmath": "cpp",
+        "codecvt": "cpp",
+        "compare": "cpp",
+        "complex": "cpp",
+        "concepts": "cpp",
+        "coroutine": "cpp",
+        "csignal": "cpp",
+        "cstdarg": "cpp",
+        "cstddef": "cpp",
+        "cstdint": "cpp",
+        "cstdio": "cpp",
+        "cstdlib": "cpp",
+        "cstring": "cpp",
+        "ctime": "cpp",
+        "cwchar": "cpp",
+        "cwctype": "cpp",
+        "deque": "cpp",
+        "list": "cpp",
+        "map": "cpp",
+        "set": "cpp",
+        "string": "cpp",
+        "unordered_map": "cpp",
+        "unordered_set": "cpp",
+        "vector": "cpp",
+        "exception": "cpp",
+        "algorithm": "cpp",
+        "functional": "cpp",
+        "iterator": "cpp",
+        "memory_resource": "cpp",
+        "netfwd": "cpp",
+        "numeric": "cpp",
+        "optional": "cpp",
+        "random": "cpp",
+        "ratio": "cpp",
+        "source_location": "cpp",
+        "string_view": "cpp",
+        "system_error": "cpp",
+        "tuple": "cpp",
+        "type_traits": "cpp",
+        "utility": "cpp",
+        "fstream": "cpp",
+        "future": "cpp",
+        "initializer_list": "cpp",
+        "iomanip": "cpp",
+        "iosfwd": "cpp",
+        "iostream": "cpp",
+        "istream": "cpp",
+        "limits": "cpp",
+        "mutex": "cpp",
+        "new": "cpp",
+        "numbers": "cpp",
+        "ostream": "cpp",
+        "sstream": "cpp",
+        "stdexcept": "cpp",
+        "streambuf": "cpp",
+        "thread": "cpp",
+        "cfenv": "cpp",
+        "cinttypes": "cpp",
+        "typeindex": "cpp",
+        "typeinfo": "cpp",
+        "variant": "cpp",
+        "qpushbutton": "cpp",
+        "qvboxlayout": "cpp",
+        "qpainter": "cpp",
+        "qpainterpath": "cpp",
+        "expected": "cpp",
+        "qdialog": "cpp",
+        "qapplication": "cpp",
+        "qtablewidget": "cpp",
+        "qwidget": "cpp",
+        "forward_list": "cpp",
+        "format": "cpp",
+        "span": "cpp",
+        "valarray": "cpp",
+        "charconv": "cpp",
+        "regex": "cpp",
+        "stdfloat": "cpp",
+        "qcombobox": "cpp",
+        "text_encoding": "cpp",
+        "qtablewidgetitem": "cpp",
+        "qstandarditemmodel": "cpp",
+        "qstandarditem": "cpp",
+        "qhboxlayout": "cpp",
+        "qlabel": "cpp",
+        "qtableview": "cpp",
+        "qsettings": "cpp",
+        "qstringlist": "cpp",
+        "qwindow": "cpp",
+        "qstring": "cpp",
+        "shared_mutex": "cpp",
+        "qgroupbox": "cpp",
+        "qheaderview": "cpp",
+        "qabstractlistmodel": "cpp"
+    },
+    "Codegeex.RepoIndex": true
+}

.vscode/tasks.json

@@ -0,0 +1,28 @@
+{
+    "tasks": [
+        {
+            "type": "cppbuild",
+            "label": "C/C++: gcc.exe 生成活动文件",
+            "command": "D:\\Dev\\msys64\\mingw64\\bin\\gcc.exe",
+            "args": [
+                "-fdiagnostics-color=always",
+                "-g",
+                "${file}",
+                "-o",
+                "${fileDirname}\\${fileBasenameNoExtension}.exe"
+            ],
+            "options": {
+                "cwd": "${fileDirname}"
+            },
+            "problemMatcher": [
+                "$gcc"
+            ],
+            "group": {
+                "kind": "build",
+                "isDefault": true
+            },
+            "detail": "调试器生成的任务。"
+        }
+    ],
+    "version": "2.0.0"
+}

3rdparty/ValveFileVDF/LICENSE

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) Matthias Moeller 2016 m_moeller@live.de
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

3rdparty/ValveFileVDF/Readme.md

@@ -0,0 +1,278 @@
+# Valve Data Format (.vdf) Reader and Writer in C++
+
+[![CMake](https://github.com/TinyTinni/ValveFileVDF/actions/workflows/cmake.yml/badge.svg)](https://github.com/TinyTinni/ValveFileVDF/actions/workflows/cmake.yml)
+
+Valve uses its own JSON-like data format: [KeyValue, also known as vdf.](https://developer.valvesoftware.com/wiki/KeyValues)
+e.g. in game manifest files or as SteamCMD output.
+This header-only file provides a parser and writer to load and save the given data.
+
+## Features:
+- read and write vdf data in C++
+- build-in encodings: `char`  and `wchar_t`
+- supports custom character sets
+- support for C++ (//) and C (/**/) comments
+- `#include`/`#base` keyword (note: searches for files in the current working directory)
+- platform independent
+- header-only
+
+## Requirements
+- C++11 
+
+(works with the C++11 features of vs120/"Visual Studio 2013" and newer)
+
+## Test Requirements
+- C++17 (uses [doctest](https://github.com/doctest/doctest))
+ 
+## How-To Use
+First, you have to include the main file `vdf-Parser.h`.
+This file provides several functions and data-structures which are
+in the namespace `tyti::vdf`.
+
+All functions and data structures supports wide characters.
+The wide character data structure is indicated by the commonly known `w`-prefix.
+Functions are templates and don't need a prefix.
+
+To read an file, create a stream e.g. `std::ifsteam` or `std::wifstream`
+and call the `tyti::vdf::read` function.
+```c++
+std::ifstream file("PathToMyFile");
+auto root = tyti::vdf::read(file);
+```
+You can also define a sequence of character defined by a range.
+```c++
+std::string blob;
+...
+auto root = tyti::vdf::read(std::cbegin(blob), std::cend(blob));
+
+//given .vdf below, following holds
+assert(root.name == "name");
+const std::shared_ptr<tyti::vdf::object> child = root.childs["child0"];
+assert(child->name == "child0");
+const std::string& k = root[0].attribs["attrib0"];
+assert(k == "value");
+```
+
+The `tyti::vdf::object` is a tree like data structure.
+It has its name, some attributes as a pair of `key` and `value`
+and its object childs. Below you can see a vdf data structure and how it is stored by naming:
+```javascript
+"name"
+{
+    "attrib0" "value" // saved as a pair, first -> key, second -> value
+    "#base" "includeFile.vdf" // appends object defined in the file to childs
+    "child0"
+    {
+    ...
+    }
+    ...
+}
+```
+
+Given such an object, you can also write it into vdf files via:
+```c++
+tyti::vdf::write(file, object);
+```
+
+## Multi-Key and Custom Output Type
+
+It is also possible to customize your output dataformat.
+Per default, the parser stores all items in a std::unordered_map, which, per definition,
+doesn't allow different entries with the same key.
+
+However, the Valve vdf format supports multiple keys. Therefore, the output data format
+has to store all items in e.g. a std::unordered_multimap.
+
+You can change the output format by passing the output type via template argument to
+the read function
+```c++
+namespace tyti;
+vdf::object       no_multi_key = vdf::read(file);
+vdf::multikey_object multi_key = vdf::read<vdf::multikey_object>(file);
+```
+
+__Note__: The interface of [std::unordered_map](http://en.cppreference.com/w/cpp/container/unordered_map) and [std::unordered_multimap](http://en.cppreference.com/w/cpp/container/unordered_multimap)
+are different when you access the elements.
+
+It is also possible to create your own data structure which is used by the parser.
+Your output class needs to define 3 functions with the following signature:
+
+```c++
+void add_attribute(std::basic_string<CHAR> key, std::basic_string<CHAR> value);
+void add_child(std::unique_ptr< MYCLASS > child);
+void set_name(std::basic_string<CHAR> n);
+```
+where ```MYCLASS``` is the tpe of your class and ```CHAR``` the type of your character set.
+Also, the type has to be [default constructible](http://en.cppreference.com/w/cpp/types/is_default_constructible)
+and [move constructible](http://en.cppreference.com/w/cpp/types/is_move_constructible).
+
+This also allows you, to inspect the file without storing it in a data structure.
+Lets say, for example, you want to count all attributes of a file without storing it.
+You can do this by using this class
+
+```c++
+struct counter
+{
+    size_t num_attributes = 0;
+    void add_attribute(std::string key, std::string value)
+    {
+        ++num_attributes;
+    }
+    void add_child(std::unique_ptr< counter > child)
+    {
+        num_attributes += child->num_attributes;
+    }
+    void set_name(std::string n)
+    {}
+};
+```
+
+and then call the read function
+```c++
+counter num = tyti::vdf::read<counter>(file);
+```
+
+## Options
+
+You can configure the parser, the non default options are not well tested yet.
+
+```c++
+struct Options
+{
+    bool strip_escape_symbols; //default true
+    bool ignore_all_platform_conditionals; // default false
+    bool ignore_includes; //default false
+};
+
+```
+
+## Reference
+```c++
+/////////////////////////////////////////////////////////////
+// pre-defined output classes
+/////////////////////////////////////////////////////////////
+  // default output object
+  template<typename T>
+  basic_object<T>
+  {
+    std::basic_string<char_type> name;
+    std::unordered_map<std::basic_string<char_type>, std::basic_string<char_type> > attribs;
+    std::unordered_map<std::basic_string<char_type>, std::shared_ptr< basic_object<char_type> > > childs;
+  };
+  typedef basic_object<char> object;
+  typedef basic_object<wchar_t> wobject
+
+  // output object with multikey support
+  template<typename T>
+  basic_multikey_object<T>
+  {
+    std::basic_string<char_type> name;
+    std::unordered_multimap<std::basic_string<char_type>, std::basic_string<char_type> > attribs;
+    std::unordered_multimap<std::basic_string<char_type>, std::shared_ptr< basic_object<char_type> > > childs;
+  };
+  typedef basic_multikey_object<char> multikey_object;
+  typedef basic_multikey_object<wchar_t> wmultikey_object
+
+/////////////////////////////////////////////////////////////
+// error codes
+/////////////////////////////////////////////////////////////
+/*
+  Possible error codes:
+    std::errc::protocol_error: file is mailformatted
+    std::errc::not_enough_memory: not enough space
+    std::errc::invalid_argument: iterators throws e.g. out of range
+*/
+
+/////////////////////////////////////////////////////////////
+// read from stream
+/////////////////////////////////////////////////////////////
+
+  /** \brief Loads a stream (e.g. filestream) into the memory and parses the vdf formatted data.
+      throws "std::bad_alloc" if file buffer could not be allocated
+      throws "std::runtime_error" if a parsing error occured
+  */
+  template<ytpename OutputT, typename iStreamT>
+  std::vector<OutputT> read(iStreamT& inStream, const Options &opt = Options{});
+
+  template<typename iStreamT>
+   std::vector<basic_object<typename iStreamT::char_type>> read(iStreamT& inStream, const Options &opt = Options{});
+
+  /** \brief Loads a stream (e.g. filestream) into the memory and parses the vdf formatted data.
+      throws "std::bad_alloc" if file buffer could not be allocated
+      ok == false, if a parsing error occured
+  */
+  template<typename OutputT, typename iStreamT>
+  std::vector<OutputT> read(iStreamT& inStream, bool* ok, const Options &opt = Options{});
+
+  template<typename iStreamT>
+   std::vector<basic_object<typename iStreamT::char_type>> read(iStreamT& inStream, bool* ok, const Options &opt = Options{});
+  
+  /** \brief Loads a stream (e.g. filestream) into the memory and parses the vdf formatted data.
+      throws "std::bad_alloc" if file buffer could not be allocated
+  */
+  template<typename OutputT, typename iStreamT>
+   std::vector<OutputT> read(iStreamT& inStream, std::error_code& ec, const Options &opt = Options{});
+
+  template<typename iStreamT>
+   std::vector<basic_object<iStreamT::char_type>> read(iStreamT& inStream, std::error_code& ec, const Options &opt = Options{});
+
+/////////////////////////////////////////////////////////////
+// read from memory
+/////////////////////////////////////////////////////////////
+
+  /** \brief Read VDF formatted sequences defined by the range [first, last).
+  If the file is mailformatted, parser will try to read it until it can.
+  @param first begin iterator
+  @param end end iterator
+  
+  throws "std::runtime_error" if a parsing error occured
+  throws "std::bad_alloc" if not enough memory could be allocated
+  */
+  template<typename OutputT, typename IterT>
+   std::vector<OutputT> read(IterT first, IterT last, const Options &opt = Options{});
+
+  template<typename IterT>
+   std::vector<basic_object<typename std::iterator_traits<IterT>::value_type>> read(IterT first, IterT last, const Options &opt = Options{});
+ 
+  /** \brief Read VDF formatted sequences defined by the range [first, last).
+  If the file is mailformatted, parser will try to read it until it can.
+  @param first begin iterator
+  @param end end iterator
+  @param ok output bool. true, if parser successed, false, if parser failed
+  */
+  template<typename OutputT, typename IterT>
+   std::vector<OutputT> read(IterT first, IterT last, bool* ok, const Options &opt = Options{}) noexcept;
+  
+  template<typename IterT>
+   std::vector<basic_object<typename std::iterator_traits<IterT>::value_type>> read(IterT first, IterT last, bool* ok, const Options &opt = Options{}) noexcept;
+  
+
+
+  /** \brief Read VDF formatted sequences defined by the range [first, last).
+  If the file is mailformatted, parser will try to read it until it can.
+  @param first begin iterator
+  @param end end iterator
+  @param ec output bool. 0 if ok, otherwise, holds an system error code
+  */
+  template<typename OutputT, typename IterT>
+  std::vector<OutputT> read(IterT first, IterT last, std::error_code& ec, const Options &opt = Options{}) noexcept;
+  
+  template<typename IterT>
+  std::vector<basic_object<typename std::iterator_traits<IterT>::value_type>> read(IterT first, IterT last, std::error_code& ec, const Options &opt = Options{}) noexcept;
+  
+
+/////////////////////////////////////////////////////////////////////////////
+  // Writer functions
+  /// writes given obj into out in vdf style 
+  /// Output is prettyfied, using tabs
+  template<typename oStreamT, typename T>
+  void write(oStreamT& out, const T& obj, const Options &opt = Options{});
+  
+```
+
+## Remarks for Errors
+The current version is a greedy implementation and jumps over unrecognized fields.
+Therefore, the error detection is very imprecise an does not give the line, where the error occurs.
+
+## License
+
+[MIT License](./LICENSE) © Matthias Möller. Made with ♥ in Germany.

3rdparty/ValveFileVDF/fuzzing/CMakeLists.txt

@@ -0,0 +1,19 @@
+set(FUZZ_RUNTIME
+    10
+    CACHE STRING "Number of seconds to run fuzz tests during ctest run")
+
+set (CMAKE_CXX_STANDARD 17)
+add_executable(fuzzing main.cpp)
+target_link_libraries(fuzzing PRIVATE -coverage -fsanitize=fuzzer)
+if ("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
+	target_compile_options(fuzzing PRIVATE -fsanitize=fuzzer)
+    target_link_libraries(fuzzing PUBLIC -fsanitize=address,undefined)
+    target_compile_definitions(fuzzing PRIVATE "-D_LIBCPP_DISABLE_DEPRECATION_WARNINGS")
+elseif("${CMAKE_CXX_COMPILER_ID}" MATCHES "MSVC")
+	target_compile_options(fuzzing PRIVATE /fsanitize=fuzzer)
+    target_compile_definitions(fuzzing PRIVATE "-D_SILENCE_ALL_CXX17_DEPRECATION_WARNINGS")
+endif()
+
+target_link_libraries(fuzzing PRIVATE ValveFileVDF)
+
+add_test(NAME fuzzing_run COMMAND fuzzing -max_total_time=${FUZZ_RUNTIME} -timeout=${FUZZ_RUNTIME})

3rdparty/ValveFileVDF/fuzzing/main.cpp

@@ -0,0 +1,13 @@
+#include <cstdint>
+#include <string_view>
+
+#include <vdf_parser.hpp>
+#include <iostream>
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
+{
+    std::string_view test_corpus{reinterpret_cast<const char *>(data), size};
+    bool ok;
+    auto result = tyti::vdf::read(test_corpus.begin(), test_corpus.end(), &ok);
+    return 0;
+}

3rdparty/ValveFileVDF/include/vdf_parser.hpp

@@ -0,0 +1,821 @@
+// MIT License
+//
+// Copyright(c) 2016 Matthias Moeller
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files(the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions :
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+#ifndef __TYTI_STEAM_VDF_PARSER_H__
+#define __TYTI_STEAM_VDF_PARSER_H__
+
+#include <algorithm>
+#include <fstream>
+#include <functional>
+#include <iterator>
+#include <map>
+#include <memory>
+#include <unordered_map>
+#include <unordered_set>
+#include <utility>
+#include <vector>
+
+#include <exception>
+#include <system_error>
+
+// for wstring support
+#include <cwchar>
+#include <string>
+
+// internal
+#include <stack>
+
+// VS < 2015 has only partial C++11 support
+#if defined(_MSC_VER) && _MSC_VER < 1900
+#ifndef CONSTEXPR
+#define CONSTEXPR
+#endif
+
+#ifndef NOEXCEPT
+#define NOEXCEPT
+#endif
+#else
+#ifndef CONSTEXPR
+#define CONSTEXPR constexpr
+#define TYTI_UNDEF_CONSTEXPR
+#endif
+
+#ifndef NOEXCEPT
+#define NOEXCEPT noexcept
+#define TYTI_UNDEF_NOEXCEPT
+#endif
+
+#endif
+
+namespace tyti
+{
+namespace vdf
+{
+namespace detail
+{
+///////////////////////////////////////////////////////////////////////////
+//  Helper functions selecting the right encoding (char/wchar_T)
+///////////////////////////////////////////////////////////////////////////
+
+template <typename T> struct literal_macro_help
+{
+    static CONSTEXPR const char *result(const char *c, const wchar_t *) NOEXCEPT
+    {
+        return c;
+    }
+    static CONSTEXPR char result(const char c, const wchar_t) NOEXCEPT
+    {
+        return c;
+    }
+};
+
+template <> struct literal_macro_help<wchar_t>
+{
+    static CONSTEXPR const wchar_t *result(const char *,
+                                           const wchar_t *wc) NOEXCEPT
+    {
+        return wc;
+    }
+    static CONSTEXPR wchar_t result(const char, const wchar_t wc) NOEXCEPT
+    {
+        return wc;
+    }
+};
+#define TYTI_L(type, text)                                                     \
+    vdf::detail::literal_macro_help<type>::result(text, L##text)
+
+inline std::string string_converter(const std::string &w) NOEXCEPT { return w; }
+
+inline std::string string_converter(const std::wstring &w) NOEXCEPT
+{
+    std::mbstate_t state = std::mbstate_t();
+    auto wstr = w.data();
+// unsafe: ignores any error handling
+// and disables warning that wcsrtombs_s should be used
+#ifdef WIN32
+#pragma warning(push)
+#pragma warning(disable : 4996)
+#endif
+    std::size_t len = 1 + std::wcsrtombs(nullptr, &wstr, 0, &state);
+    std::string mbstr(len, '\0');
+    std::wcsrtombs(&mbstr[0], &wstr, mbstr.size(), &state);
+#ifdef WIN32
+#pragma warning(pop)
+#endif
+    return mbstr;
+}
+
+///////////////////////////////////////////////////////////////////////////
+//  Writer helper functions
+///////////////////////////////////////////////////////////////////////////
+
+template <typename charT> class tabs
+{
+    const size_t t;
+
+  public:
+    explicit CONSTEXPR tabs(size_t i) NOEXCEPT : t(i) {}
+    std::basic_string<charT> print() const
+    {
+        return std::basic_string<charT>(t, TYTI_L(charT, '\t'));
+    }
+    inline CONSTEXPR tabs operator+(size_t i) const NOEXCEPT
+    {
+        return tabs(t + i);
+    }
+};
+
+template <typename oStreamT>
+oStreamT &operator<<(oStreamT &s, const tabs<typename oStreamT::char_type> t)
+{
+    s << t.print();
+    return s;
+}
+} // end namespace detail
+
+///////////////////////////////////////////////////////////////////////////
+//  Interface
+///////////////////////////////////////////////////////////////////////////
+
+/// custom objects and their corresponding write functions
+
+/// basic object node. Every object has a name and can contains attributes saved
+/// as key_value pairs or childrens
+template <typename CharT> struct basic_object
+{
+    typedef CharT char_type;
+    std::basic_string<char_type> name;
+    std::unordered_map<std::basic_string<char_type>,
+                       std::basic_string<char_type>>
+        attribs;
+    std::unordered_map<std::basic_string<char_type>,
+                       std::shared_ptr<basic_object<char_type>>>
+        childs;
+
+    void add_attribute(std::basic_string<char_type> key,
+                       std::basic_string<char_type> value)
+    {
+        attribs.emplace(std::move(key), std::move(value));
+    }
+    void add_child(std::unique_ptr<basic_object<char_type>> child)
+    {
+        std::shared_ptr<basic_object<char_type>> obj{child.release()};
+        childs.emplace(obj->name, obj);
+    }
+    void set_name(std::basic_string<char_type> n) { name = std::move(n); }
+};
+
+template <typename CharT> struct basic_multikey_object
+{
+    typedef CharT char_type;
+    std::basic_string<char_type> name;
+    std::unordered_multimap<std::basic_string<char_type>,
+                            std::basic_string<char_type>>
+        attribs;
+    std::unordered_multimap<std::basic_string<char_type>,
+                            std::shared_ptr<basic_multikey_object<char_type>>>
+        childs;
+
+    void add_attribute(std::basic_string<char_type> key,
+                       std::basic_string<char_type> value)
+    {
+        attribs.emplace(std::move(key), std::move(value));
+    }
+    void add_child(std::unique_ptr<basic_multikey_object<char_type>> child)
+    {
+        std::shared_ptr<basic_multikey_object<char_type>> obj{child.release()};
+        childs.emplace(obj->name, obj);
+    }
+    void set_name(std::basic_string<char_type> n) { name = std::move(n); }
+};
+
+typedef basic_object<char> object;
+typedef basic_object<wchar_t> wobject;
+typedef basic_multikey_object<char> multikey_object;
+typedef basic_multikey_object<wchar_t> wmultikey_object;
+
+struct Options
+{
+    bool strip_escape_symbols;
+    bool ignore_all_platform_conditionals;
+    bool ignore_includes;
+
+    Options()
+        : strip_escape_symbols(true), ignore_all_platform_conditionals(false),
+          ignore_includes(false)
+    {
+    }
+};
+
+// forward decls
+// forward decl
+template <typename OutputT, typename iStreamT>
+OutputT read(iStreamT &inStream, const Options &opt = Options{});
+
+/** \brief writes given object tree in vdf format to given stream.
+Output is prettyfied, using tabs
+*/
+template <typename oStreamT, typename T>
+void write(oStreamT &s, const T &r,
+           const detail::tabs<typename oStreamT::char_type> tab =
+               detail::tabs<typename oStreamT::char_type>(0))
+{
+    typedef typename oStreamT::char_type charT;
+    using namespace detail;
+    s << tab << TYTI_L(charT, '"') << r.name << TYTI_L(charT, "\"\n") << tab
+      << TYTI_L(charT, "{\n");
+    for (const auto &i : r.attribs)
+        s << tab + 1 << TYTI_L(charT, '"') << i.first
+          << TYTI_L(charT, "\"\t\t\"") << i.second << TYTI_L(charT, "\"\n");
+    for (const auto &i : r.childs)
+        if (i.second)
+            write(s, *i.second, tab + 1);
+    s << tab << TYTI_L(charT, "}\n");
+}
+
+namespace detail
+{
+template <typename iStreamT>
+std::basic_string<typename iStreamT::char_type> read_file(iStreamT &inStream)
+{
+    // cache the file
+    typedef typename iStreamT::char_type charT;
+    std::basic_string<charT> str;
+    inStream.seekg(0, std::ios::end);
+    str.resize(static_cast<size_t>(inStream.tellg()));
+    if (str.empty())
+        return str;
+
+    inStream.seekg(0, std::ios::beg);
+    inStream.read(&str[0], static_cast<std::streamsize>(str.size()));
+    return str;
+}
+
+/** \brief Read VDF formatted sequences defined by the range [first, last).
+If the file is mailformatted, parser will try to read it until it can.
+@param first            begin iterator
+@param end              end iterator
+@param exclude_files    list of files which cant be included anymore.
+                        prevents circular includes
+
+can thow:
+        - "std::runtime_error" if a parsing error occured
+        - "std::bad_alloc" if not enough memory coup be allocated
+*/
+template <typename OutputT, typename IterT>
+std::vector<std::unique_ptr<OutputT>> read_internal(
+    IterT first, const IterT last,
+    std::unordered_set<
+        std::basic_string<typename std::iterator_traits<IterT>::value_type>>
+        &exclude_files,
+    const Options &opt)
+{
+    static_assert(std::is_default_constructible<OutputT>::value,
+                  "Output Type must be default constructible (provide "
+                  "constructor without arguments)");
+    static_assert(std::is_move_constructible<OutputT>::value,
+                  "Output Type must be move constructible");
+
+    typedef typename std::iterator_traits<IterT>::value_type charT;
+
+    const std::basic_string<charT> comment_end_str = TYTI_L(charT, "*/");
+    const std::basic_string<charT> whitespaces = TYTI_L(charT, " \n\v\f\r\t");
+
+#ifdef WIN32
+    std::function<bool(const std::basic_string<charT> &)> is_platform_str =
+        [](const std::basic_string<charT> &in)
+    {
+        return in == TYTI_L(charT, "$WIN32") || in == TYTI_L(charT, "$WINDOWS");
+    };
+#elif __APPLE__
+    // WIN32 stands for pc in general
+    std::function<bool(const std::basic_string<charT> &)> is_platform_str =
+        [](const std::basic_string<charT> &in)
+    {
+        return in == TYTI_L(charT, "$WIN32") || in == TYTI_L(charT, "$POSIX") ||
+               in == TYTI_L(charT, "$OSX");
+    };
+
+#elif __linux__
+    // WIN32 stands for pc in general
+    std::function<bool(const std::basic_string<charT> &)> is_platform_str =
+        [](const std::basic_string<charT> &in)
+    {
+        return in == TYTI_L(charT, "$WIN32") || in == TYTI_L(charT, "$POSIX") ||
+               in == TYTI_L(charT, "$LINUX");
+    };
+#else
+    std::function<bool(const std::basic_string<charT> &)> is_platform_str =
+        [](const std::basic_string<charT> &in) { return false; };
+#endif
+
+    if (opt.ignore_all_platform_conditionals)
+        is_platform_str = [](const std::basic_string<charT> &)
+        { return false; };
+
+    // function for skipping a comment block
+    // iter: iterator poition to the position after a '/'
+    auto skip_comments = [&comment_end_str](IterT iter,
+                                            const IterT &last) -> IterT
+    {
+        ++iter;
+        if (iter == last)
+            return last;
+
+        if (*iter == TYTI_L(charT, '/'))
+        {
+            // line comment, skip whole line
+            iter = std::find(iter + 1, last, TYTI_L(charT, '\n'));
+            if (iter == last)
+                return last;
+        }
+
+        if (*iter == '*')
+        {
+            // block comment, skip until next occurance of "*\"
+            iter = std::search(iter + 1, last, std::begin(comment_end_str),
+                               std::end(comment_end_str));
+            if (std::distance(iter, last) <= 2)
+                return last;
+            iter += 2;
+        }
+
+        return iter;
+    };
+
+    auto end_quote = [](IterT iter, const IterT &last) -> IterT
+    {
+        const auto begin = iter;
+        auto last_esc = iter;
+        if (iter == last)
+            throw std::runtime_error{"quote was opened but not closed."};
+        do
+        {
+            ++iter;
+            iter = std::find(iter, last, TYTI_L(charT, '\"'));
+            if (iter == last)
+                break;
+
+            last_esc = std::prev(iter);
+            while (last_esc != begin && *last_esc == '\\')
+                --last_esc;
+        } while (!(std::distance(last_esc, iter) % 2) && iter != last);
+        if (iter == last)
+            throw std::runtime_error{"quote was opened but not closed."};
+        return iter;
+    };
+
+    auto end_word = [&whitespaces](IterT iter, const IterT &last) -> IterT
+    {
+        const auto begin = iter;
+        auto last_esc = iter;
+        if (iter == last)
+            throw std::runtime_error{"quote was opened but not closed."};
+        do
+        {
+            ++iter;
+            iter = std::find_first_of(iter, last, std::begin(whitespaces),
+                                      std::end(whitespaces));
+            if (iter == last)
+                break;
+
+            last_esc = std::prev(iter);
+            while (last_esc != begin && *last_esc == '\\')
+                --last_esc;
+        } while (!(std::distance(last_esc, iter) % 2) && iter != last);
+        if (iter == last)
+            throw std::runtime_error{"word wasnt properly ended"};
+        return iter;
+    };
+
+    auto skip_whitespaces = [&whitespaces](IterT iter,
+                                           const IterT &last) -> IterT
+    {
+        if (iter == last)
+            return iter;
+        iter = std::find_if_not(iter, last,
+                                [&whitespaces](charT c)
+                                {
+                                    // return true if whitespace
+                                    return std::any_of(std::begin(whitespaces),
+                                                       std::end(whitespaces),
+                                                       [c](charT pc)
+                                                       { return pc == c; });
+                                });
+        return iter;
+    };
+
+    std::function<void(std::basic_string<charT> &)> strip_escape_symbols =
+        [](std::basic_string<charT> &s)
+    {
+        auto quote_searcher = [&s](size_t pos)
+        { return s.find(TYTI_L(charT, "\\\""), pos); };
+        auto p = quote_searcher(0);
+        while (p != s.npos)
+        {
+            s.replace(p, 2, TYTI_L(charT, "\""));
+            p = quote_searcher(p);
+        }
+        auto searcher = [&s](size_t pos)
+        { return s.find(TYTI_L(charT, "\\\\"), pos); };
+        p = searcher(0);
+        while (p != s.npos)
+        {
+            s.replace(p, 2, TYTI_L(charT, "\\"));
+            p = searcher(p);
+        }
+    };
+
+    if (!opt.strip_escape_symbols)
+        strip_escape_symbols = [](std::basic_string<charT> &) {};
+
+    auto conditional_fullfilled =
+        [&skip_whitespaces, &is_platform_str](IterT &iter, const IterT &last)
+    {
+        iter = skip_whitespaces(iter, last);
+        if (iter == last)
+            return true;
+        if (*iter == '[')
+        {
+            ++iter;
+            if (iter == last)
+                throw std::runtime_error("conditional not closed");
+            const auto end = std::find(iter, last, ']');
+            if (end == last)
+                throw std::runtime_error("conditional not closed");
+            const bool negate = *iter == '!';
+            if (negate)
+                ++iter;
+            auto conditional = std::basic_string<charT>(iter, end);
+
+            const bool is_platform = is_platform_str(conditional);
+            iter = end + 1;
+
+            return static_cast<bool>(is_platform ^ negate);
+        }
+        return true;
+    };
+
+    // read header
+    //  first, quoted name
+    std::unique_ptr<OutputT> curObj = nullptr;
+    std::vector<std::unique_ptr<OutputT>> roots;
+    std::stack<std::unique_ptr<OutputT>> lvls;
+    auto curIter = first;
+
+    while (curIter != last && *curIter != '\0')
+    {
+        //  find first starting attrib/child, or ending
+        curIter = skip_whitespaces(curIter, last);
+        if (curIter == last || *curIter == '\0')
+            break;
+        if (*curIter == TYTI_L(charT, '/'))
+        {
+            curIter = skip_comments(curIter, last);
+            if (curIter == last || *curIter == '\0')
+                throw std::runtime_error("Unexpected eof");
+        }
+        else if (*curIter != TYTI_L(charT, '}'))
+        {
+            // get key
+            const auto keyEnd = (*curIter == TYTI_L(charT, '\"'))
+                                    ? end_quote(curIter, last)
+                                    : end_word(curIter, last);
+            if (*curIter == TYTI_L(charT, '\"'))
+                ++curIter;
+            std::basic_string<charT> key(curIter, keyEnd);
+            strip_escape_symbols(key);
+            curIter = keyEnd + ((*keyEnd == TYTI_L(charT, '\"')) ? 1 : 0);
+            if (curIter == last)
+                throw std::runtime_error{"key opened, but never closed"};
+
+            curIter = skip_whitespaces(curIter, last);
+
+            if (!conditional_fullfilled(curIter, last))
+                continue;
+            if (curIter == last)
+                throw std::runtime_error{"key declared, but no value"};
+
+            while (*curIter == TYTI_L(charT, '/'))
+            {
+
+                curIter = skip_comments(curIter, last);
+                if (curIter == last || *curIter == '}')
+                    throw std::runtime_error{"key declared, but no value"};
+                curIter = skip_whitespaces(curIter, last);
+                if (curIter == last || *curIter == '}')
+                    throw std::runtime_error{"key declared, but no value"};
+            }
+            // get value
+            if (*curIter != '{')
+            {
+                if (curIter == last)
+                    throw std::runtime_error{"key declared, but no value"};
+                const auto valueEnd = (*curIter == TYTI_L(charT, '\"'))
+                                          ? end_quote(curIter, last)
+                                          : end_word(curIter, last);
+                if (valueEnd == last)
+                    throw std::runtime_error("No closed word");
+                if (*curIter == TYTI_L(charT, '\"'))
+                    ++curIter;
+                if (curIter == last)
+                    throw std::runtime_error("No closed word");
+
+                auto value = std::basic_string<charT>(curIter, valueEnd);
+                strip_escape_symbols(value);
+                curIter =
+                    valueEnd + ((*valueEnd == TYTI_L(charT, '\"')) ? 1 : 0);
+
+                if (!conditional_fullfilled(curIter, last))
+                    continue;
+
+                // process value
+                if (key != TYTI_L(charT, "#include") &&
+                    key != TYTI_L(charT, "#base"))
+                {
+                    if (curObj)
+                    {
+                        curObj->add_attribute(std::move(key), std::move(value));
+                    }
+                    else
+                    {
+                        throw std::runtime_error{
+                            "unexpected key without object"};
+                    }
+                }
+                else
+                {
+                    if (!opt.ignore_includes &&
+                        exclude_files.find(value) == exclude_files.end())
+                    {
+                        exclude_files.insert(value);
+                        std::basic_ifstream<charT> i(
+                            detail::string_converter(value));
+                        auto str = read_file(i);
+                        auto file_objs = read_internal<OutputT>(
+                            str.begin(), str.end(), exclude_files, opt);
+                        for (auto &n : file_objs)
+                        {
+                            if (curObj)
+                                curObj->add_child(std::move(n));
+                            else
+                                roots.push_back(std::move(n));
+                        }
+                        exclude_files.erase(value);
+                    }
+                }
+            }
+            else if (*curIter == '{')
+            {
+                if (curObj)
+                    lvls.push(std::move(curObj));
+                curObj = std::make_unique<OutputT>();
+                curObj->set_name(std::move(key));
+                ++curIter;
+            }
+        }
+        // end of new object
+        else if (curObj && *curIter == TYTI_L(charT, '}'))
+        {
+            if (!lvls.empty())
+            {
+                // get object before
+                std::unique_ptr<OutputT> prev{std::move(lvls.top())};
+                lvls.pop();
+
+                // add finished obj to obj before and release it from processing
+                prev->add_child(std::move(curObj));
+                curObj = std::move(prev);
+            }
+            else
+            {
+                roots.push_back(std::move(curObj));
+                curObj.reset();
+            }
+            ++curIter;
+        }
+        else
+        {
+            throw std::runtime_error{"unexpected '}'"};
+        }
+    }
+    if (curObj != nullptr || !lvls.empty())
+    {
+        throw std::runtime_error{"object is not closed with '}'"};
+    }
+
+    return roots;
+}
+
+} // namespace detail
+
+/** \brief Read VDF formatted sequences defined by the range [first, last).
+If the file is mailformatted, parser will try to read it until it can.
+@param first begin iterator
+@param end end iterator
+
+can thow:
+        - "std::runtime_error" if a parsing error occured
+        - "std::bad_alloc" if not enough memory coup be allocated
+*/
+template <typename OutputT, typename IterT>
+OutputT read(IterT first, const IterT last, const Options &opt = Options{})
+{
+    auto exclude_files = std::unordered_set<
+        std::basic_string<typename std::iterator_traits<IterT>::value_type>>{};
+    auto roots =
+        detail::read_internal<OutputT>(first, last, exclude_files, opt);
+
+    OutputT result;
+    if (roots.size() > 1)
+    {
+        for (auto &i : roots)
+            result.add_child(std::move(i));
+    }
+    else if (roots.size() == 1)
+        result = std::move(*roots[0]);
+
+    return result;
+}
+
+/** \brief Read VDF formatted sequences defined by the range [first, last).
+If the file is mailformatted, parser will try to read it until it can.
+@param first begin iterator
+@param end end iterator
+@param ec output bool. 0 if ok, otherwise, holds an system error code
+
+Possible error codes:
+std::errc::protocol_error: file is mailformatted
+std::errc::not_enough_memory: not enough space
+std::errc::invalid_argument: iterators throws e.g. out of range
+*/
+template <typename OutputT, typename IterT>
+OutputT read(IterT first, IterT last, std::error_code &ec,
+             const Options &opt = Options{}) NOEXCEPT
+
+{
+    ec.clear();
+    OutputT r{};
+    try
+    {
+        r = read<OutputT>(first, last, opt);
+    }
+    catch (std::runtime_error &)
+    {
+        ec = std::make_error_code(std::errc::protocol_error);
+    }
+    catch (std::bad_alloc &)
+    {
+        ec = std::make_error_code(std::errc::not_enough_memory);
+    }
+    catch (...)
+    {
+        ec = std::make_error_code(std::errc::invalid_argument);
+    }
+    return r;
+}
+
+/** \brief Read VDF formatted sequences defined by the range [first, last).
+If the file is mailformatted, parser will try to read it until it can.
+@param first begin iterator
+@param end end iterator
+@param ok output bool. true, if parser successed, false, if parser failed
+*/
+template <typename OutputT, typename IterT>
+OutputT read(IterT first, const IterT last, bool *ok,
+             const Options &opt = Options{}) NOEXCEPT
+{
+    std::error_code ec;
+    auto r = read<OutputT>(first, last, ec, opt);
+    if (ok)
+        *ok = !ec;
+    return r;
+}
+
+template <typename IterT>
+inline auto read(IterT first, const IterT last, bool *ok,
+                 const Options &opt = Options{}) NOEXCEPT
+    -> basic_object<typename std::iterator_traits<IterT>::value_type>
+{
+    return read<basic_object<typename std::iterator_traits<IterT>::value_type>>(
+        first, last, ok, opt);
+}
+
+template <typename IterT>
+inline auto read(IterT first, IterT last, std::error_code &ec,
+                 const Options &opt = Options{}) NOEXCEPT
+    -> basic_object<typename std::iterator_traits<IterT>::value_type>
+{
+    return read<basic_object<typename std::iterator_traits<IterT>::value_type>>(
+        first, last, ec, opt);
+}
+
+template <typename IterT>
+inline auto read(IterT first, const IterT last, const Options &opt = Options{})
+    -> basic_object<typename std::iterator_traits<IterT>::value_type>
+{
+    return read<basic_object<typename std::iterator_traits<IterT>::value_type>>(
+        first, last, opt);
+}
+
+/** \brief Loads a stream (e.g. filestream) into the memory and parses the vdf
+   formatted data. throws "std::bad_alloc" if file buffer could not be allocated
+*/
+template <typename OutputT, typename iStreamT>
+OutputT read(iStreamT &inStream, std::error_code &ec,
+             const Options &opt = Options{})
+{
+    // cache the file
+    typedef typename iStreamT::char_type charT;
+    std::basic_string<charT> str = detail::read_file(inStream);
+
+    // parse it
+    return read<OutputT>(str.begin(), str.end(), ec, opt);
+}
+
+template <typename iStreamT>
+inline basic_object<typename iStreamT::char_type>
+read(iStreamT &inStream, std::error_code &ec, const Options &opt = Options{})
+{
+    return read<basic_object<typename iStreamT::char_type>>(inStream, ec, opt);
+}
+
+/** \brief Loads a stream (e.g. filestream) into the memory and parses the vdf
+   formatted data. throws "std::bad_alloc" if file buffer could not be allocated
+    ok == false, if a parsing error occured
+*/
+template <typename OutputT, typename iStreamT>
+OutputT read(iStreamT &inStream, bool *ok, const Options &opt = Options{})
+{
+    std::error_code ec;
+    const auto r = read<OutputT>(inStream, ec, opt);
+    if (ok)
+        *ok = !ec;
+    return r;
+}
+
+template <typename iStreamT>
+inline basic_object<typename iStreamT::char_type>
+read(iStreamT &inStream, bool *ok, const Options &opt = Options{})
+{
+    return read<basic_object<typename iStreamT::char_type>>(inStream, ok, opt);
+}
+
+/** \brief Loads a stream (e.g. filestream) into the memory and parses the vdf
+   formatted data. throws "std::bad_alloc" if file buffer could not be allocated
+    throws "std::runtime_error" if a parsing error occured
+*/
+template <typename OutputT, typename iStreamT>
+OutputT read(iStreamT &inStream, const Options &opt)
+{
+
+    // cache the file
+    typedef typename iStreamT::char_type charT;
+    std::basic_string<charT> str = detail::read_file(inStream);
+    // parse it
+    return read<OutputT>(str.begin(), str.end(), opt);
+}
+
+template <typename iStreamT>
+inline basic_object<typename iStreamT::char_type>
+read(iStreamT &inStream, const Options &opt = Options{})
+{
+    return read<basic_object<typename iStreamT::char_type>>(inStream, opt);
+}
+
+} // namespace vdf
+} // namespace tyti
+#ifndef TYTI_NO_L_UNDEF
+#undef TYTI_L
+#endif
+
+#ifdef TYTI_UNDEF_CONSTEXPR
+#undef CONSTEXPR
+#undef TYTI_NO_L_UNDEF
+#endif
+
+#ifdef TYTI_UNDEF_NOTHROW
+#undef NOTHROW
+#undef TYTI_UNDEF_NOTHROW
+#endif
+
+#endif //__TYTI_STEAM_VDF_PARSER_H__

3rdparty/ValveFileVDF/python/CMakeLists.txt

@@ -0,0 +1,42 @@
+cmake_minimum_required (VERSION 3.11.2018)
+project (vdf-Python)
+
+set(CMAKE_INCLUDE_CURRENT_DIR ON)
+
+find_package(Git REQUIRED)
+find_package(Python COMPONENTS Interpreter Development)
+
+option(DOWNLOAD_PYBIND11 "Download PyBind11. (Requires Git)" ${Git_FOUND})
+
+set(PYBIND11_PATH "${CMAKE_BINARY_DIR}/pybind11" CACHE FILEPATH "Path to pybind11")
+if (${DOWNLOAD_PYBIND11})	
+	#include(ExternalProject)
+    set (_GIT_CMD "clone")
+    if (EXISTS ${PYBIND11_PATH})
+        message(STATUS "pull pybind11")
+        execute_process(COMMAND ${GIT_EXECUTABLE} pull  
+                    WORKING_DIRECTORY "${PYBIND11_PATH}")
+    else()
+        message(STATUS "clone pybind11")
+        execute_process(COMMAND ${GIT_EXECUTABLE} ${_GIT_CMD} https://github.com/pybind/pybind11.git ${PYBIND11_PATH}
+                    WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
+	endif()
+endif()
+
+if (NOT EXISTS ${PYBIND11_PATH}/CMakeLists.txt)
+    message(FATAL_ERROR "Could not found pybind11.\n Please specify PYBIND11_PATH or check DOWNLOAD_PYBIND11")
+endif()
+
+add_subdirectory(${PYBIND11_PATH})
+pybind11_add_module(vdf "../vdf_parser.hpp;vdf_python_bindings.cpp;Readme.md")
+target_link_libraries(vdf PRIVATE Python::Python ValveFileVDF)
+
+
+## add tests
+include(CTest)
+if (BUILD_TESTING)
+    add_test(NAME vdf_python_test COMMAND ${Python_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/test.py WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/../tests/testdata")
+    set(ppath $ENV{PYTHONPATH})
+    LIST(APPEND ppath  "$<TARGET_FILE_DIR:vdf>")
+    set_tests_properties(vdf_python_test PROPERTIES ENVIRONMENT "PYTHONPATH=${ppath}" DEPENDS vdf)
+endif()

3rdparty/ValveFileVDF/python/Readme.md

@@ -0,0 +1,18 @@
+# Python Interface
+
+Adds a simple interface for Python.
+Use CMake (>=3.12) to build the .pyd file.
+
+Interface may change in the future.
+
+Module Example:
+```python
+import vdf
+
+mydict = vdf.read_file("test_file.vdf")
+#mydict is a standard dictionary
+
+value = mydict[key]
+
+mydict2 = vdf.read("vdf_file{"key":"value"}")
+```

3rdparty/ValveFileVDF/python/test.py

@@ -0,0 +1,15 @@
+import unittest
+import vdf
+
+class MyTest(unittest.TestCase):
+
+    def test_read_file(self):
+        d = vdf.read_file("DST_Manifest.acf")
+        self.assertEqual(d["appid"], "343050")
+        self.assertEqual(d["UserConfig"], {})
+        self.assertEqual(len(d["MountedDepots"]), 1)
+        self.assertEqual(d["another attribute with fancy space"], "yay")        
+        
+
+if __name__ == "__main__":
+    unittest.main()

3rdparty/ValveFileVDF/python/vdf_python_bindings.cpp

@@ -0,0 +1,47 @@
+#include "vdf_parser.hpp"
+#include <fstream>
+#include <string>
+
+#include <pybind11/pybind11.h>
+#include <pybind11/stl_bind.h>
+
+namespace py = pybind11;
+
+struct python_object
+{
+    py::dict dict;
+    std::string name;
+
+    void add_attribute(std::string key, std::string value)
+    {
+        dict[py::cast(std::move(key))] = py::cast(std::move(value));
+    }
+    void add_child(std::unique_ptr< python_object > child)
+    {
+        std::string n = std::move(child->name);
+        dict[py::cast(n)] = std::move(child->dict);
+    }
+    void set_name(std::string n)
+    {
+        name = std::move(n);
+    }
+};
+
+py::dict py_read_file(const char* filename)
+{
+    std::ifstream input(filename);
+    return tyti::vdf::read<python_object>(input).dict;
+}
+
+py::dict py_read(const std::string& filename)
+{
+    return tyti::vdf::read<python_object>(std::begin(filename), std::end(filename)).dict;
+}
+
+PYBIND11_MODULE(vdf, m)
+{
+    m.doc() = "Read and Write Valve's vdf files.";
+
+    m.def("read", &py_read, "Read vdf from memory");
+    m.def("read_file", &py_read_file, "Read vdf file");
+}

3rdparty/ValveFileVDF/tests/CMakeLists.txt

@@ -0,0 +1,26 @@
+
+set(SRCS
+ "main.cpp"
+ "vdf_parser_test.cpp"
+ "../Readme.md")
+
+add_executable(tests ${SRCS})
+set_property(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} PROPERTY VS_STARTUP_PROJECT tests) #requires cmake 3.6
+set_property(TARGET tests PROPERTY COMPILE_WARNING_AS_ERROR ON)
+add_definitions("-DSOURCE_DIR=\"${CMAKE_CURRENT_SOURCE_DIR}\"")
+target_compile_features(tests PUBLIC cxx_std_17)
+target_link_libraries(tests PRIVATE ValveFileVDF)
+
+target_compile_options(tests PRIVATE
+     $<$<OR:$<CXX_COMPILER_ID:Clang>,$<CXX_COMPILER_ID:AppleClang>,$<CXX_COMPILER_ID:GNU>>:
+          -Wall -Wextra -Wconversion -pedantic-errors -Wsign-conversion>
+     $<$<CXX_COMPILER_ID:MSVC>:
+          /W4>)
+
+if ("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
+    target_link_libraries(tests PUBLIC -fsanitize=address,undefined)
+endif()
+
+if (BUILD_TESTING)
+    add_test(NAME vdf_tests COMMAND tests)
+endif()

3rdparty/ValveFileVDF/tests/main.cpp

@@ -0,0 +1,35 @@
+#define DOCTEST_CONFIG_IMPLEMENT
+#include "doctest.h"
+#include <iostream>
+
+const char *testdata_dir = SOURCE_DIR "/testdata/";
+
+#ifdef _WIN32
+#include <direct.h>
+#define cwd _getcwd
+#define cd _chdir
+#else
+#include "unistd.h"
+#define cwd getcwd
+#define cd chdir
+#endif
+
+int main(int argc, char *argv[])
+{
+
+    doctest::Context context;
+    context.applyCommandLine(argc, argv);
+
+    if (cd(testdata_dir) != 0)
+    {
+        std::cerr << "Cannot set working directory to " << testdata_dir
+                  << std::endl;
+        return 1;
+    }
+
+    int result = context.run();
+
+    // your clean-up...
+
+    return result;
+}

3rdparty/ValveFileVDF/tests/testdata/DST_Manifest.acf

@@ -0,0 +1,52 @@
+"#base"  "baseFile1.vdf"
+
+//simple check
+"AppState"
+{
+	"appid"		"343050"
+	"Universe"		"1"
+	"name"		"Don't Starve Together Dedicated Server"
+	"StateFlags"		"4"
+	"installdir"		"Don't Starve Together Dedicated Server"
+	"LastUpdated"		"1462118047"
+	"UpdateResult"		"0"
+    "UpdateResult"		"1"
+    no_quoted_attrib_support yes
+	"SizeOnDisk"		"663289971"
+	"buildid"		"1101428"
+	"LastOwner"		"76561198937928833"
+	"BytesToDownload"		"39029520"
+	"BytesDownloaded"		"39029520"
+	"AutoUpdateBehavior"		"0"
+	"AllowOtherDownloadsWhileRunning"		"0"
+    "#include"  "includeFile1.vdf"
+    "#base"  "baseFile1.vdf"
+    "#1_attrib" "1"
+    "emptyAttrib" ""
+    "commentInValue" "no//comment"
+    "escape_quote" "\"quote\""
+    "escape_quote_backslash" "quote_with_other_escapes\\\"\\"
+    "tab_escape" "new\ttab"
+    "new_line_escape" "new\nline"
+
+	"conditional" "macos" [$OSX]
+	"conditional" "not osx" [!$OSX]
+    
+    // inline comment
+    "UserConfig"
+	{
+	}
+    
+    // comment with a "quote"
+	"MountedDepots"
+	{
+		"343051"		"8201905585059905072"
+	}
+    "another attribute with fancy space" "yay"
+    
+    /*  super
+        block
+        comment
+    */
+    
+}

3rdparty/ValveFileVDF/tests/testdata/baseFile1.vdf

@@ -0,0 +1,7 @@
+"BaseInclude"
+{
+    // skip comment
+    "BaseAttrib" "Yes"
+    "#base" "baseFile1.vdf"
+    "#include" "includeFile1.vdf"
+}

3rdparty/ValveFileVDF/tests/testdata/fuzzing_data/crash-1

@@ -0,0 +1 @@
+f*/*<2A><><EFBFBD><EFBFBD>/<0C>

3rdparty/ValveFileVDF/tests/testdata/fuzzing_data/timeout-1

@@ -0,0 +1,3 @@
+-<2D>
+/
+{

3rdparty/ValveFileVDF/tests/testdata/includeFile1.vdf

@@ -0,0 +1,4 @@
+"IncludedStuff"
+{
+    "#include" "baseFile1.vdf"
+}

3rdparty/ValveFileVDF/tests/testdata/issue14.vdf

@@ -0,0 +1,249 @@
+"InstallConfigStore"
+{
+"SDL_GamepadBind" "03000000de280000ff11000001000000,Steam Virtual Gamepad,a:b0,b:b1,back:b6,dpdown:h0.4,dpleft:h0.8,dpright:h0.2,dpup:h0.1,leftshoulder:b4,leftstick:b8,lefttrigger:+a2,leftx:a0,lefty:a1,rightshoulder:b5,rightstick:b9,righttrigger:-a2,rightx:a3,righty:a4,start:b7,x:b2,y:b3,platform:Windows\n03000000de280000ff11000000000000,Steam Virtual Gamepad,a:b0,b:b1,back:b6,dpdown:h0.4,dpleft:h0.8,dpright:h0.2,dpup:h0.1,leftshoulder:b4,leftstick:b8,lefttrigger:+a2,leftx:a0,lefty:a1,rightshoulder:b5,rightstick:b9,righttrigger:-a2,rightx:a3,righty:a4,start:b7,x:b2,y:b3,platform:Windows\n03000000de280000ff11000000007701,Steam Virtual Gamepad,a:b0,b:b1,x:b2,y:b3,back:b6,start:b7,leftstick:b8,rightstick:b9,leftshoulder:b4,rightshoulder:b5,dpup:b10,dpdown:b12,dpleft:b13,dpright:b11,leftx:a1,lefty:a0~,rightx:a3,righty:a2~,lefttrigger:a4,righttrigger:a5,"
+"Software"
+{
+"Valve"
+{
+"Steam"
+{
+"MTBF" "917051485"
+"AutoUpdateWindowEnabled" "0"
+"SurveyDateType" "3"
+"ipv6check_http_state" "bad"
+"RecentWebSocketNon443Failures" ""
+"ipv6check_udp_state" "bad"
+"RecentWebSocket443Failures" "1685436844,1685577986,1685578002,1685578049,1685578301"
+"RecentTCPFailures" ""
+"RecentUDPFailures" ""
+"CellIDServerOverride" "159"
+"SurveyDate" "2018-01-31"
+"cip" "02000000c3566e9d751d6cc90000b0e47803"
+"SurveyDateVersion" "3972811748885790880"
+"Rate" "10000"
+"RecentDownloadRate" "37459893"
+"Perf"
+{
+"GameProfiles"
+{
+"Global"
+{
+"0"
+{
+"0" ""
+}
+}
+"App"
+{
+"769"
+{
+"0"
+{
+"0" ""
+}
+}
+}
+}
+}
+"ConnectCache"
+{
+"3ff7c4de1" "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"
+}
+"ShaderCacheManager"
+{
+"CurrentBucketDriver" ""
+"CurrentBucketGPU" ""
+"HasCurrentBucket" "1"
+"EnableShaderBackgroundProcessing" "0"
+}
+"CMWebSocket"
+{
+"ext4-ord.steamserver.net:443"
+{
+"LastPingTimestamp" "1685578300"
+"LastLoadValue" "0"
+"LastPingValue" "100000"
+}
+"ext6-iad1.steamserver.net.:443"
+{
+"LastPingTimestamp" "0"
+}
+"ext2-ord.steamserver.net:27021"
+{
+"LastPingTimestamp" "1685578048"
+"LastPingValue" "100000"
+"LastLoadValue" "0"
+}
+"ext2-lax1.steamserver.net:443"
+{
+"LastPingTimestamp" "0"
+}
+"ext1-lax1.steamserver.net:443"
+{
+"LastPingTimestamp" "0"
+}
+"ext3-ord.steamserver.net:27021"
+{
+"LastPingTimestamp" "0"
+}
+"ext6-iad1.steamserver.net.:27021"
+{
+"LastPingTimestamp" "0"
+}
+"ext4-ord.steamserver.net:27021"
+{
+"LastPingTimestamp" "0"
+}
+"ext2-ord.steamserver.net:443"
+{
+"LastPingTimestamp" "0"
+}
+"ext1-ord.steamserver.net:443"
+{
+"LastPingTimestamp" "1685578002"
+"LastPingValue" "100000"
+"LastLoadValue" "0"
+}
+"ext2-lax1.steamserver.net:27021"
+{
+"LastPingTimestamp" "1685578301"
+"LastLoadValue" "25"
+"LastPingValue" "221"
+}
+"ext1-ord.steamserver.net:27021"
+{
+"LastPingTimestamp" "1685578300"
+"LastLoadValue" "0"
+"LastPingValue" "100000"
+}
+"ext1-lax1.steamserver.net:27021"
+{
+"LastPingTimestamp" "0"
+}
+"ext5-iad1.steamserver.net:27021"
+{
+"LastPingTimestamp" "1685578049"
+"LastLoadValue" "30"
+"LastPingValue" "307"
+}
+"ext5-iad1.steamserver.net:443"
+{
+"LastPingTimestamp" "0"
+}
+"ext3-ord.steamserver.net:443"
+{
+"LastPingTimestamp" "0"
+}
+}
+"Accounts"
+{
+"lixi442860990"
+{
+"SteamID" "76561198312248332"
+}
+}
+"depots"
+{
+"1426216"
+{
+"DecryptionKey" "e3bcedc8dde41929d61cf843016c562bda456120c67062bcf59fae4a11eb4b4f"
+}
+"1503452"
+{
+"DecryptionKey" "6219cf8e1233e7672147221b611f54e26c64541d48f653a3fd8c429fac86fa84"
+}
+"880941"
+{
+"DecryptionKey" "ce9aa368e895b19d481941c1bc33d93fa1b495f6046caeee282580a6eac1a99c"
+}
+"1426213"
+{
+"DecryptionKey" "f00c27168f613be65a380acbe6b2666daf9b554f4aa1183dfe34db8d972a7e22"
+}
+"1203221"
+{
+"DecryptionKey" "788b93ea9ea92552d334bdb7fa9caf5f21f98dded4a670c54926bf0a2bd1d74f"
+}
+"1426211"
+{
+"DecryptionKey" "c450c44e032e27d0308cf864259fb2af91bcfc58401a0caf33bb8efba85bb323"
+}
+"1426212"
+{
+"DecryptionKey" "99090c0728bfb9251f59c85c9f06484721d78edc05c8ae341ec5c9467a1f5a1d"
+}
+"1426214"
+{
+"DecryptionKey" "3ee79053f80ab473ad36bdd01364181fe32c56004ed1bc42571d745dd4b8a107"
+}
+"1426215"
+{
+"DecryptionKey" "eab052b3f590730d382a0d51d66cb4d410fc090cd2ca62cc11d16b63b0b2836b"
+}
+"1426217"
+{
+"DecryptionKey" "2cfd11044ff54f4000d4fa6678b2bf9f3ef01d938f1cb65f40e6302ee3ab2fa5"
+}
+"1426218"
+{
+"DecryptionKey" "eea43f33f312e1c8dd17ffe314b66a3973f90903055e1a6d67ed0fdbc9e645b3"
+}
+"1426219"
+{
+"DecryptionKey" "608b4e63ab758b67708f2d8dc51a102db4863b8072a41ca049d2df2b87f95163"
+}
+"1503450"
+{
+"DecryptionKey" "70395ff068a2b079a71aa86404c73c8eb4a0c7d0062e8ed224b0b816c99a3190"
+}
+"1503451"
+{
+"DecryptionKey" "213d830db33d439cfe41a1b95ace67a705a2ba3ebf969a43651054d36eeb578f"
+}
+"1503453"
+{
+"DecryptionKey" "ce7e4e2e59b4d9a610c74f070fc986a108f44ff1f59594b5fe19aa7997798479"
+}
+"228988"
+{
+"DecryptionKey" "1845444d5e2cfd0ae65ae4a8fedb6e2fbf776fcc5b913ab4ac461bc9a74f8358"
+}
+"228990"
+{
+"DecryptionKey" "44d8c45ce229a11c4f231a3d2a350eaf80b0d69a8af938ec7ccca720f694b0e8"
+}
+"1304931"
+{
+"DecryptionKey" "81611074b6fd0d2e108d34562aca73115d01d6bea3f08092b8d98aad42c2f0fb"
+}
+}
+}
+}
+}
+"Authentication"
+{
+"RememberedMachineID"
+{
+"3ff7c4de1" "eyAidHlwIjogIkpXVCIsICJhbGciOiAiRWREU0EiIH0.eyAiaXNzIjogInI6MEQyQV8yMjk2RTMxNV83NzFFMCIsICJzdWIiOiAiNzY1NjExOTgzMTIyNDgzMzIiLCAiYXVkIjogWyAibWFjaGluZSIgXSwgImV4cCI6IDE3MDM3NzE1NjQsICJuYmYiOiAxNjc2Nzk2ODgxLCAiaWF0IjogMTY4NTQzNjg4MSwgImp0aSI6ICIwRDMzXzIyOTZFMzE1XzM1NzkxIiwgIm9hdCI6IDE2ODU0MzY4ODEsICJydF9leHAiOiAxNzAzNzcwMTg1LCAicGVyIjogMCwgImlwX3N1YmplY3QiOiAiNTguMTcuNjEuODMiLCAiaXBfY29uZmlybWVyIjogIjU4LjE3LjYxLjgzIiB9.ga7z9QCw9t3PKBBdZzoil6UF-sFeNA-LvjziPEF-mdjxgRsFgo4AjtoAMeCg90PsdgTtXqsqToAl9LJpIyrcBw"
+}
+}
+"streaming"
+{
+"ClientID" "-2065686191053516812"
+}
+"Music"
+{
+"LocalLibrary"
+{
+"Directories"
+{
+"0" "02000000807c0fe9141d6db992de1003515788e69d14a3f66d574cb6822f6d085b70ea1f74833f19ab5d09380b2ac0e7d2ab00b3fe4f38163ab31c13ab8791111053cc44a010b3f7573b7313847f795bc4df98a1"
+"1" "02000000807c0fe9141d6db992de1003515788e39c1eb6f7507b089d822d61080f2af3532dd83f07aa4b0136575bc2e3dfb30490eb4826021ab31002ab85e7707c24da74a40a9feb66481661847f7153448d10e602e49d5c3997f57bc0330d59cc897b8f"
+}
+}
+}
+"WebStorage"
+{
+"DownloadsStoreRecentlyCompleted" "{"version":1,"data":[{"appid":228980,"total_bytes":123069936,"downloaded_bytes":123069936,"active":false,"paused":false,"completed":true,"deferred_time":0,"queue_index":-1,"update_result":0,"update_error":"","completed_time":1685578382,"buildid":11255752,"target_buildid":11255752,"launch_on_completion":false,"update_type_info":[{"has_update":true,"completed_update":true,"total_bytes":123069936,"downloaded_bytes":123069936},{"has_update":false,"completed_update":false,"total_bytes":0,"downloaded_bytes":0},{"has_update":false,"completed_update":false,"total_bytes":0,"downloaded_bytes":0}],"patch_notes_gid":""}]}"
+}
+}

3rdparty/ValveFileVDF/tests/vdf_parser_test.cpp

@@ -0,0 +1,240 @@
+#include <algorithm>
+#include <filesystem>
+#include <fstream>
+#include <sstream>
+#include <string>
+
+#define TYTI_NO_L_UNDEF
+#include <vdf_parser.hpp>
+#define T_L(x) TYTI_L(charT, x)
+using namespace tyti;
+
+#include "doctest.h"
+
+template <typename charT>
+void check_DST_AST(const vdf::basic_object<charT> &obj)
+{
+    CHECK(obj.name == T_L("AppState"));
+    REQUIRE(obj.attribs.size() == 24);
+    REQUIRE(obj.childs.size() == 4);
+
+    CHECK(obj.attribs.at(T_L("appid")) == T_L("343050"));
+
+    CHECK(obj.attribs.at(T_L("buildid")) == T_L("1101428"));
+    CHECK(obj.attribs.at(T_L("#1_attrib")) == T_L("1"));
+    CHECK(obj.attribs.at(T_L("emptyAttrib")) == T_L(""));
+    CHECK(obj.attribs.at(T_L("escape_quote")) == T_L(R"("quote")"));
+    CHECK(obj.attribs.at(T_L("no_quoted_attrib_support")) == T_L("yes"));
+    // "C2017 can occur when the stringize operator is used with strings that
+    // include escape sequences."
+    // https://docs.microsoft.com/en-us/previous-versions/visualstudio/visual-studio-2013/29t70y03(v=vs.120)
+#if !defined(_MSC_VER) || (_MSC_VER > 1800)
+    CHECK(obj.attribs.at(T_L("escape_quote_backslash")) ==
+          T_L("quote_with_other_escapes\\\"\\"));
+    CHECK(obj.attribs.at(T_L("tab_escape")) == T_L("new\\ttab"));
+    CHECK(obj.attribs.at(T_L("new_line_escape")) == T_L("new\\nline"));
+#endif
+
+    CHECK(obj.childs.at(T_L("UserConfig"))->name == T_L("UserConfig"));
+    CHECK(obj.childs.at(T_L("UserConfig"))->childs.empty());
+
+    const auto &inc = obj.childs.at(T_L("IncludedStuff"));
+    CHECK(inc->name == T_L("IncludedStuff"));
+    const auto &base = obj.childs.at(T_L("BaseInclude"));
+    REQUIRE(base->attribs.size() == 1);
+    CHECK(base->attribs.at(T_L("BaseAttrib")) == T_L("Yes"));
+    CHECK(obj.attribs.at(T_L("another attribute with fancy space")) ==
+          T_L("yay"));
+}
+
+template <typename charT>
+void check_DST_AST_multikey(const vdf::basic_multikey_object<charT> &obj)
+{
+    CHECK(obj.name == T_L("AppState"));
+    REQUIRE(obj.attribs.size() == 25);
+    REQUIRE(obj.childs.size() == 4);
+
+    CHECK(obj.attribs.find(T_L("appid"))->second == T_L("343050"));
+
+    CHECK(obj.attribs.find(T_L("buildid"))->second == T_L("1101428"));
+    CHECK(obj.attribs.find(T_L("#1_attrib"))->second == T_L("1"));
+    CHECK(obj.attribs.find(T_L("emptyAttrib"))->second == T_L(""));
+    CHECK(obj.attribs.find(T_L("no_quoted_attrib_support"))->second ==
+          T_L("yes"));
+
+    CHECK(obj.attribs.count(T_L("UpdateResult")) == 2);
+
+    CHECK(obj.childs.find(T_L("UserConfig"))->second->name ==
+          T_L("UserConfig"));
+    CHECK(obj.childs.find(T_L("UserConfig"))->second->childs.empty());
+
+    const auto &inc = obj.childs.find(T_L("IncludedStuff"))->second;
+    CHECK(inc->name == T_L("IncludedStuff"));
+    const auto &base = obj.childs.find(T_L("BaseInclude"))->second;
+    REQUIRE(base->attribs.size() == 1);
+    CHECK(base->attribs.find(T_L("BaseAttrib"))->second == T_L("Yes"));
+    CHECK(obj.attribs.find(T_L("another attribute with fancy space"))->second ==
+          T_L("yay"));
+}
+
+TEST_CASE_TEMPLATE("Read File", charT, char, wchar_t)
+{
+    SUBCASE("bool return")
+    {
+        std::basic_ifstream<charT> file("DST_Manifest.acf");
+        bool ok;
+        auto objects = vdf::read(file, &ok);
+
+        REQUIRE(ok);
+        auto it = objects.childs.find(T_L("AppState"));
+        CHECK(it != objects.childs.end());
+        check_DST_AST(*(it->second));
+    }
+
+    SUBCASE("ec return")
+    {
+        std::basic_ifstream<charT> file("DST_Manifest.acf");
+        std::error_code ec;
+        auto objects = vdf::read(file, ec);
+
+        REQUIRE(!ec);
+        auto it = objects.childs.find(T_L("AppState"));
+        CHECK(it != objects.childs.end());
+        check_DST_AST(*(it->second));
+    }
+
+    SUBCASE("exception")
+    {
+        std::basic_ifstream<charT> file("DST_Manifest.acf");
+        auto objects = vdf::read(file);
+        auto it = objects.childs.find(T_L("AppState"));
+        CHECK(it != objects.childs.end());
+        check_DST_AST(*(it->second));
+    }
+}
+
+TEST_CASE_TEMPLATE("Read String", charT, char, wchar_t)
+{
+    std::basic_string<charT> attribs(
+        T_L("\"firstNode\"{\"SecondNode\"{\"Key\" \"Value\" //myComment\n}}"));
+    bool ok;
+    vdf::read(attribs.begin(), attribs.end(), &ok);
+
+    REQUIRE(ok);
+}
+
+// todo: error checking
+TEST_CASE_TEMPLATE("Find Error", charT, char, wchar_t)
+{
+    bool ok;
+    std::basic_string<charT> attribs(
+        T_L("\"firstNode\"{\"SecondNode\"{\"Key\" //myComment\n}}"));
+    vdf::read(attribs.begin(), attribs.end(), &ok);
+
+    REQUIRE(!ok);
+}
+
+TEST_CASE_TEMPLATE("Write and Read", charT, char, wchar_t)
+{
+    std::basic_string<charT> attribs(
+        T_L("\"firstNode\"{\"SecondNode\"{\"Key\" \"Value\" //myComment\n}}"));
+    bool ok;
+    auto obj = vdf::read(attribs.begin(), attribs.end(), &ok);
+
+    REQUIRE(ok);
+
+    std::basic_stringstream<charT> output;
+    vdf::write(output, obj);
+    obj = vdf::read(output);
+
+    CHECK(obj.name == T_L("firstNode"));
+
+    CHECK(obj.attribs.empty() == true);
+    REQUIRE(obj.childs.size() == 1);
+    const auto &secondNode = obj.childs.at(T_L("SecondNode"));
+
+    CHECK(secondNode->name == T_L("SecondNode"));
+    REQUIRE(secondNode->attribs.size() == 1);
+    CHECK(secondNode->childs.empty() == true);
+    CHECK(secondNode->attribs.at(T_L("Key")) == T_L("Value"));
+}
+
+TEST_CASE_TEMPLATE("read multikey", charT, char, wchar_t)
+{
+    std::basic_ifstream<charT> file("DST_Manifest.acf");
+    auto objects = vdf::read<vdf::basic_multikey_object<charT>>(file);
+    auto it = objects.childs.find(T_L("AppState"));
+    CHECK(it != objects.childs.end());
+    check_DST_AST_multikey(*(it->second));
+}
+
+TEST_CASE_TEMPLATE("read broken file", charT, char, wchar_t)
+{
+#ifndef WIN32
+    if constexpr (std::is_same_v<charT, wchar_t>)
+        return;
+#endif
+    std::basic_ifstream<charT> file("broken_file.acf");
+    std::error_code ec;
+    auto objects = vdf::read(file, ec);
+    REQUIRE(ec);
+    REQUIRE(objects.name.empty());
+    REQUIRE(objects.attribs.empty());
+    REQUIRE(objects.childs.empty());
+}
+
+TEST_CASE_TEMPLATE("read broken file throw", charT, char, wchar_t)
+{
+#ifndef WIN32
+    if constexpr (std::is_same_v<charT, wchar_t>)
+        return;
+#endif
+    std::basic_ifstream<charT> file("broken_file.acf");
+    CHECK_THROWS(vdf::read(file));
+}
+
+TEST_CASE("issue14")
+{
+    std::ifstream input_file("issue14.vdf", std::ios::in);
+    CHECK_THROWS(tyti::vdf::read(input_file));
+}
+
+/////////////////////////////////////////////////////////////
+// readme test
+/////////////////////////////////////////////////////////////
+
+TEST_CASE("counter test")
+{
+    struct counter
+    {
+        size_t num_attributes;
+        counter() : num_attributes(0) {}
+        void add_attribute(std::string, std::string) { ++num_attributes; }
+        void add_child(std::unique_ptr<counter> child)
+        {
+            num_attributes += child->num_attributes;
+        }
+        void set_name(std::string) {}
+    };
+
+    std::ifstream file("DST_Manifest.acf");
+    counter num = tyti::vdf::read<counter>(file);
+    CHECK(num.num_attributes == 29);
+}
+
+/////////////////////////////////////////////////////////////
+// fuzzer findings
+/////////////////////////////////////////////////////////////
+TEST_CASE("fuzzing_files")
+{
+
+    for (auto const &dir_entry :
+         std::filesystem::directory_iterator{"fuzzing_data"})
+    {
+        SUBCASE(dir_entry.path().filename().string().c_str())
+        {
+            std::ifstream f(dir_entry.path().string());
+            CHECK_THROWS(tyti::vdf::read(f));
+        }
+    }
+}

3rdparty/curl/bin/curl-config

@@ -0,0 +1,195 @@
+#!/bin/sh
+#***************************************************************************
+#                                  _   _ ____  _
+#  Project                     ___| | | |  _ \| |
+#                             / __| | | | |_) | |
+#                            | (__| |_| |  _ <| |___
+#                             \___|\___/|_| \_\_____|
+#
+# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+#
+# This software is licensed as described in the file COPYING, which
+# you should have received as part of this distribution. The terms
+# are also available at https://curl.se/docs/copyright.html.
+#
+# You may opt to use, copy, modify, merge, publish, distribute and/or sell
+# copies of the Software, and permit persons to whom the Software is
+# furnished to do so, under the terms of the COPYING file.
+#
+# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+# KIND, either express or implied.
+#
+# SPDX-License-Identifier: curl
+#
+###########################################################################
+
+# shellcheck disable=SC2006
+
+prefix='F:\SourceCode\curl\build\curl'
+# Used in 'libdir'
+# shellcheck disable=SC2034
+exec_prefix="${prefix}"
+# shellcheck disable=SC2034
+includedir="${prefix}/include"
+cppflag_curl_staticlib='-DCURL_STATICLIB'
+
+usage()
+{
+  cat <<EOF
+Usage: curl-config [OPTION]
+
+Available values for OPTION include:
+
+  --built-shared says 'yes' if libcurl was built shared
+  --ca                  CA bundle install path
+  --cc                  compiler
+  --cflags              preprocessor and compiler flags
+  --checkfor [version]  check for (lib)curl of the specified version
+  --configure           the arguments given to configure when building curl
+  --features            newline separated list of enabled features
+  --help                display this help and exit
+  --libs                library linking information
+  --prefix              curl install prefix
+  --protocols           newline separated list of enabled protocols
+  --ssl-backends        output the SSL backends libcurl was built to support
+  --static-libs         static libcurl library linking information
+  --version             output version information
+  --vernum              output version as a hexadecimal number
+EOF
+
+  exit "$1"
+}
+
+if test "$#" -eq 0; then
+  usage 1
+fi
+
+while test "$#" -gt 0; do
+  case "$1" in
+  --built-shared)
+    echo 'no'
+    ;;
+
+  --ca)
+    echo ''
+    ;;
+
+  --cc)
+    echo 'D:/Dev/msys64/mingw64/bin/cc.exe'
+    ;;
+
+  --prefix)
+    echo "$prefix"
+    ;;
+
+  --feature|--features)
+    for feature in alt-svc AsynchDNS HSTS HTTP2 HTTP3 HTTPS-proxy IDN IPv6 Largefile libz NTLM PSL SSL threadsafe TLS-SRP UnixSockets zstd ''; do
+      test -n "$feature" && echo "$feature"
+    done
+    ;;
+
+  --protocols)
+    # shellcheck disable=SC2043
+    for protocol in DICT FILE FTP FTPS GOPHER GOPHERS HTTP HTTPS IMAP IMAPS IPFS IPNS LDAP LDAPS MQTT POP3 POP3S RTSP SCP SFTP SMB SMBS SMTP SMTPS TELNET TFTP; do
+      echo "$protocol"
+    done
+    ;;
+
+  --version)
+    echo 'libcurl 8.11.0-DEV'
+    exit 0
+    ;;
+
+  --checkfor)
+    checkfor="$2"
+    cmajor=`echo "$checkfor" | cut -d. -f1`
+    cminor=`echo "$checkfor" | cut -d. -f2`
+    # when extracting the patch part we strip off everything after a
+    # dash as that's used for things like version 1.2.3-pre1
+    cpatch=`echo "$checkfor" | cut -d. -f3 | cut -d- -f1`
+
+    vmajor=`echo '8.11.0-DEV' | cut -d. -f1`
+    vminor=`echo '8.11.0-DEV' | cut -d. -f2`
+    # when extracting the patch part we strip off everything after a
+    # dash as that's used for things like version 1.2.3-pre1
+    vpatch=`echo '8.11.0-DEV' | cut -d. -f3 | cut -d- -f1`
+
+    if test "$vmajor" -gt "$cmajor"; then
+      exit 0
+    fi
+    if test "$vmajor" -eq "$cmajor"; then
+      if test "$vminor" -gt "$cminor"; then
+        exit 0
+      fi
+      if test "$vminor" -eq "$cminor"; then
+        if test "$cpatch" -le "$vpatch"; then
+          exit 0
+        fi
+      fi
+    fi
+
+    echo "requested version $checkfor is newer than existing 8.11.0-DEV"
+    exit 1
+    ;;
+
+  --vernum)
+    echo '080b00'
+    exit 0
+    ;;
+
+  --help)
+    usage 0
+    ;;
+
+  --cflags)
+    if test "X$cppflag_curl_staticlib" = 'X-DCURL_STATICLIB'; then
+      CPPFLAG_CURL_STATICLIB='-DCURL_STATICLIB '
+    else
+      CPPFLAG_CURL_STATICLIB=''
+    fi
+    if test "X${prefix}/include" = 'X/usr/include'; then
+      echo "${CPPFLAG_CURL_STATICLIB}"
+    else
+      echo "${CPPFLAG_CURL_STATICLIB}-I${prefix}/include"
+    fi
+    ;;
+
+  --libs)
+    if test "X${exec_prefix}/lib" != 'X/usr/lib' -a "X${exec_prefix}/lib" != 'X/usr/lib64'; then
+      CURLLIBDIR="-L${exec_prefix}/lib "
+    else
+      CURLLIBDIR=''
+    fi
+    if test 'Xno' = 'Xno'; then
+      echo "${CURLLIBDIR}-lcurl -lidn2 -lws2_32 -lbcrypt -lssl -lcrypto -lz -lzstd -lnghttp2 -lnghttp3 -lwldap32 -lpsl -lssh2 -ladvapi32 -lcrypt32"
+    else
+      echo "${CURLLIBDIR}-lcurl"
+    fi
+    ;;
+
+  --ssl-backends)
+    echo 'OpenSSL v3+'
+    ;;
+
+  --static-libs)
+    if test 'Xyes' != 'Xno'; then
+      echo "${exec_prefix}/lib/libcurl.a -LD:/Dev/msys64/mingw64/bin/../lib -LD:/Dev/msys64/mingw64/lib -lidn2 -lws2_32 -lbcrypt -lssl -lcrypto -lz -lzstd -lnghttp2 -lnghttp3 -lwldap32 -lpsl -lssh2 -ladvapi32 -lcrypt32"
+    else
+      echo 'curl was built with static libraries disabled' >&2
+      exit 1
+    fi
+    ;;
+
+  --configure)
+    echo 
+    ;;
+
+  *)
+    echo "unknown option: $1"
+    usage 1
+    ;;
+  esac
+  shift
+done
+
+exit 0

3rdparty/curl/bin/mk-ca-bundle.pl

@@ -0,0 +1,714 @@
+#!/usr/bin/env perl
+# ***************************************************************************
+# *                                  _   _ ____  _
+# *  Project                     ___| | | |  _ \| |
+# *                             / __| | | | |_) | |
+# *                            | (__| |_| |  _ <| |___
+# *                             \___|\___/|_| \_\_____|
+# *
+# * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+# *
+# * This software is licensed as described in the file COPYING, which
+# * you should have received as part of this distribution. The terms
+# * are also available at https://curl.se/docs/copyright.html.
+# *
+# * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+# * copies of the Software, and permit persons to whom the Software is
+# * furnished to do so, under the terms of the COPYING file.
+# *
+# * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+# * KIND, either express or implied.
+# *
+# * SPDX-License-Identifier: curl
+# *
+# ***************************************************************************
+# This Perl script creates a fresh ca-bundle.crt file for use with libcurl.
+# It downloads certdata.txt from Mozilla's source tree (see URL below),
+# then parses certdata.txt and extracts CA Root Certificates into PEM format.
+# These are then processed with the OpenSSL commandline tool to produce the
+# final ca-bundle.crt file.
+# The script is based on the parse-certs script written by Roland Krikava.
+# This Perl script works on almost any platform since its only external
+# dependency is the OpenSSL commandline tool for optional text listing.
+# Hacked by Guenter Knauf.
+#
+use Encode;
+use Getopt::Std;
+use MIME::Base64;
+use strict;
+use warnings;
+use vars qw($opt_b $opt_d $opt_f $opt_h $opt_i $opt_k $opt_l $opt_m $opt_n $opt_p $opt_q $opt_s $opt_t $opt_u $opt_v $opt_w);
+use List::Util;
+use Text::Wrap;
+use Time::Local;
+my $MOD_SHA = "Digest::SHA";
+eval "require $MOD_SHA";
+if ($@) {
+  $MOD_SHA = "Digest::SHA::PurePerl";
+  eval "require $MOD_SHA";
+}
+eval "require LWP::UserAgent";
+
+my %urls = (
+  'nss' =>
+    'https://hg.mozilla.org/projects/nss/raw-file/default/lib/ckfw/builtins/certdata.txt',
+  'central' =>
+    'https://hg.mozilla.org/mozilla-central/raw-file/default/security/nss/lib/ckfw/builtins/certdata.txt',
+  'beta' =>
+    'https://hg.mozilla.org/releases/mozilla-beta/raw-file/default/security/nss/lib/ckfw/builtins/certdata.txt',
+  'release' =>
+    'https://hg.mozilla.org/releases/mozilla-release/raw-file/default/security/nss/lib/ckfw/builtins/certdata.txt',
+);
+
+$opt_d = 'release';
+
+# If the OpenSSL commandline is not in search path you can configure it here!
+my $openssl = 'openssl';
+
+my $version = '1.29';
+
+$opt_w = 76; # default base64 encoded lines length
+
+# default cert types to include in the output (default is to include CAs which
+# may issue SSL server certs)
+my $default_mozilla_trust_purposes = "SERVER_AUTH";
+my $default_mozilla_trust_levels = "TRUSTED_DELEGATOR";
+$opt_p = $default_mozilla_trust_purposes . ":" . $default_mozilla_trust_levels;
+
+my @valid_mozilla_trust_purposes = (
+  "DIGITAL_SIGNATURE",
+  "NON_REPUDIATION",
+  "KEY_ENCIPHERMENT",
+  "DATA_ENCIPHERMENT",
+  "KEY_AGREEMENT",
+  "KEY_CERT_SIGN",
+  "CRL_SIGN",
+  "SERVER_AUTH",
+  "CLIENT_AUTH",
+  "CODE_SIGNING",
+  "EMAIL_PROTECTION",
+  "IPSEC_END_SYSTEM",
+  "IPSEC_TUNNEL",
+  "IPSEC_USER",
+  "TIME_STAMPING",
+  "STEP_UP_APPROVED"
+);
+
+my @valid_mozilla_trust_levels = (
+  "TRUSTED_DELEGATOR",    # CAs
+  "NOT_TRUSTED",          # Don't trust these certs.
+  "MUST_VERIFY_TRUST",    # This explicitly tells us that it ISN'T a CA but is
+                          # otherwise ok. In other words, this should tell the
+                          # app to ignore any other sources that claim this is
+                          # a CA.
+  "TRUSTED"               # This cert is trusted, but only for itself and not
+                          # for delegates (i.e. it is not a CA).
+);
+
+my $default_signature_algorithms = $opt_s = "MD5";
+
+my @valid_signature_algorithms = (
+  "MD5",
+  "SHA1",
+  "SHA256",
+  "SHA384",
+  "SHA512"
+);
+
+$0 =~ s@.*(/|\\)@@;
+$Getopt::Std::STANDARD_HELP_VERSION = 1;
+getopts('bd:fhiklmnp:qs:tuvw:');
+
+if(!defined($opt_d)) {
+    # to make plain "-d" use not cause warnings, and actually still work
+    $opt_d = 'release';
+}
+
+# Use predefined URL or else custom URL specified on command line.
+my $url;
+if(defined($urls{$opt_d})) {
+  $url = $urls{$opt_d};
+  if(!$opt_k && $url !~ /^https:\/\//i) {
+    die "The URL for '$opt_d' is not HTTPS. Use -k to override (insecure).\n";
+  }
+}
+else {
+  $url = $opt_d;
+}
+
+if ($opt_i) {
+  print ("=" x 78 . "\n");
+  print "Script Version                   : $version\n";
+  print "Perl Version                     : $]\n";
+  print "Operating System Name            : $^O\n";
+  print "Getopt::Std.pm Version           : ${Getopt::Std::VERSION}\n";
+  print "Encode::Encoding.pm Version      : ${Encode::Encoding::VERSION}\n";
+  print "MIME::Base64.pm Version          : ${MIME::Base64::VERSION}\n";
+  print "LWP::UserAgent.pm Version        : ${LWP::UserAgent::VERSION}\n" if($LWP::UserAgent::VERSION);
+  print "LWP.pm Version                   : ${LWP::VERSION}\n" if($LWP::VERSION);
+  print "Digest::SHA.pm Version           : ${Digest::SHA::VERSION}\n" if ($Digest::SHA::VERSION);
+  print "Digest::SHA::PurePerl.pm Version : ${Digest::SHA::PurePerl::VERSION}\n" if ($Digest::SHA::PurePerl::VERSION);
+  print ("=" x 78 . "\n");
+}
+
+sub warning_message() {
+  if ( $opt_d =~ m/^risk$/i ) { # Long Form Warning and Exit
+    print "Warning: Use of this script may pose some risk:\n";
+    print "\n";
+    print "  1) If you use HTTP URLs they are subject to a man in the middle attack\n";
+    print "  2) Default to 'release', but more recent updates may be found in other trees\n";
+    print "  3) certdata.txt file format may change, lag time to update this script\n";
+    print "  4) Generally unwise to blindly trust CAs without manual review & verification\n";
+    print "  5) Mozilla apps use additional security checks aren't represented in certdata\n";
+    print "  6) Use of this script will make a security engineer grind his teeth and\n";
+    print "     swear at you.  ;)\n";
+    exit;
+  } else { # Short Form Warning
+    print "Warning: Use of this script may pose some risk, -d risk for more details.\n";
+  }
+}
+
+sub HELP_MESSAGE() {
+  print "Usage:\t${0} [-b] [-d<certdata>] [-f] [-i] [-k] [-l] [-n] [-p<purposes:levels>] [-q] [-s<algorithms>] [-t] [-u] [-v] [-w<l>] [<outputfile>]\n";
+  print "\t-b\tbackup an existing version of ca-bundle.crt\n";
+  print "\t-d\tspecify Mozilla tree to pull certdata.txt or custom URL\n";
+  print "\t\t  Valid names are:\n";
+  print "\t\t    ", join( ", ", map { ( $_ =~ m/$opt_d/ ) ? "$_ (default)" : "$_" } sort keys %urls ), "\n";
+  print "\t-f\tforce rebuild even if certdata.txt is current\n";
+  print "\t-i\tprint version info about used modules\n";
+  print "\t-k\tallow URLs other than HTTPS, enable HTTP fallback (insecure)\n";
+  print "\t-l\tprint license info about certdata.txt\n";
+  print "\t-m\tinclude meta data in output\n";
+  print "\t-n\tno download of certdata.txt (to use existing)\n";
+  print wrap("\t","\t\t", "-p\tlist of Mozilla trust purposes and levels for certificates to include in output. Takes the form of a comma separated list of purposes, a colon, and a comma separated list of levels. (default: $default_mozilla_trust_purposes:$default_mozilla_trust_levels)"), "\n";
+  print "\t\t  Valid purposes are:\n";
+  print wrap("\t\t    ","\t\t    ", join( ", ", "ALL", @valid_mozilla_trust_purposes ) ), "\n";
+  print "\t\t  Valid levels are:\n";
+  print wrap("\t\t    ","\t\t    ", join( ", ", "ALL", @valid_mozilla_trust_levels ) ), "\n";
+  print "\t-q\tbe really quiet (no progress output at all)\n";
+  print wrap("\t","\t\t", "-s\tcomma separated list of certificate signatures/hashes to output in plain text mode. (default: $default_signature_algorithms)\n");
+  print "\t\t  Valid signature algorithms are:\n";
+  print wrap("\t\t    ","\t\t    ", join( ", ", "ALL", @valid_signature_algorithms ) ), "\n";
+  print "\t-t\tinclude plain text listing of certificates\n";
+  print "\t-u\tunlink (remove) certdata.txt after processing\n";
+  print "\t-v\tbe verbose and print out processed CAs\n";
+  print "\t-w <l>\twrap base64 output lines after <l> chars (default: ${opt_w})\n";
+  exit;
+}
+
+sub VERSION_MESSAGE() {
+  print "${0} version ${version} running Perl ${]} on ${^O}\n";
+}
+
+warning_message() unless ($opt_q || $url =~ m/^(ht|f)tps:/i );
+HELP_MESSAGE() if ($opt_h);
+
+sub report($@) {
+  my $output = shift;
+
+  print STDERR $output . "\n" unless $opt_q;
+}
+
+sub is_in_list($@) {
+  my $target = shift;
+
+  return defined(List::Util::first { $target eq $_ } @_);
+}
+
+# Parses $param_string as a case insensitive comma separated list with optional
+# whitespace validates that only allowed parameters are supplied
+sub parse_csv_param($$@) {
+  my $description = shift;
+  my $param_string = shift;
+  my @valid_values = @_;
+
+  my @values = map {
+    s/^\s+//;  # strip leading spaces
+    s/\s+$//;  # strip trailing spaces
+    uc $_      # return the modified string as upper case
+  } split( ',', $param_string );
+
+  # Find all values which are not in the list of valid values or "ALL"
+  my @invalid = grep { !is_in_list($_,"ALL",@valid_values) } @values;
+
+  if ( scalar(@invalid) > 0 ) {
+    # Tell the user which parameters were invalid and print the standard help
+    # message which will exit
+    print "Error: Invalid ", $description, scalar(@invalid) == 1 ? ": " : "s: ", join( ", ", map { "\"$_\"" } @invalid ), "\n";
+    HELP_MESSAGE();
+  }
+
+  @values = @valid_values if ( is_in_list("ALL",@values) );
+
+  return @values;
+}
+
+sub sha256 {
+  my $result;
+  if ($Digest::SHA::VERSION || $Digest::SHA::PurePerl::VERSION) {
+    open(FILE, $_[0]) or die "Can't open '$_[0]': $!";
+    binmode(FILE);
+    $result = $MOD_SHA->new(256)->addfile(*FILE)->hexdigest;
+    close(FILE);
+  } else {
+    # Use OpenSSL command if Perl Digest::SHA modules not available
+    $result = `"$openssl" dgst -r -sha256 "$_[0]"`;
+    $result =~ s/^([0-9a-f]{64}) .+/$1/is;
+  }
+  return $result;
+}
+
+
+sub oldhash {
+  my $hash = "";
+  open(C, "<$_[0]") || return 0;
+  while(<C>) {
+    chomp;
+    if($_ =~ /^\#\# SHA256: (.*)/) {
+      $hash = $1;
+      last;
+    }
+  }
+  close(C);
+  return $hash;
+}
+
+if ( $opt_p !~ m/:/ ) {
+  print "Error: Mozilla trust identifier list must include both purposes and levels\n";
+  HELP_MESSAGE();
+}
+
+(my $included_mozilla_trust_purposes_string, my $included_mozilla_trust_levels_string) = split( ':', $opt_p );
+my @included_mozilla_trust_purposes = parse_csv_param( "trust purpose", $included_mozilla_trust_purposes_string, @valid_mozilla_trust_purposes );
+my @included_mozilla_trust_levels = parse_csv_param( "trust level", $included_mozilla_trust_levels_string, @valid_mozilla_trust_levels );
+
+my @included_signature_algorithms = parse_csv_param( "signature algorithm", $opt_s, @valid_signature_algorithms );
+
+sub should_output_cert(%) {
+  my %trust_purposes_by_level = @_;
+
+  foreach my $level (@included_mozilla_trust_levels) {
+    # for each level we want to output, see if any of our desired purposes are
+    # included
+    return 1 if ( defined( List::Util::first { is_in_list( $_, @included_mozilla_trust_purposes ) } @{$trust_purposes_by_level{$level}} ) );
+  }
+
+  return 0;
+}
+
+my $crt = $ARGV[0] || 'ca-bundle.crt';
+(my $txt = $url) =~ s@(.*/|\?.*)@@g;
+
+my $stdout = $crt eq '-';
+my $resp;
+my $fetched;
+
+my $oldhash = oldhash($crt);
+
+report "SHA256 of old file: $oldhash";
+
+if(!$opt_n) {
+  report "Downloading $txt ...";
+
+  # If we have an HTTPS URL then use curl
+  if($url =~ /^https:\/\//i) {
+    my $curl = `curl -V`;
+    if($curl) {
+      if($curl =~ /^Protocols:.* https( |$)/m) {
+        report "Get certdata with curl!";
+        my $proto = !$opt_k ? "--proto =https" : "";
+        my $quiet = $opt_q ? "-s" : "";
+        my @out = `curl -w %{response_code} $proto $quiet -o "$txt" "$url"`;
+        if(!$? && @out && $out[0] == 200) {
+          $fetched = 1;
+          report "Downloaded $txt";
+        }
+        else {
+          report "Failed downloading via HTTPS with curl";
+          if(-e $txt && !unlink($txt)) {
+            report "Failed to remove '$txt': $!";
+          }
+        }
+      }
+      else {
+        report "curl lacks https support";
+      }
+    }
+    else {
+      report "curl not found";
+    }
+  }
+
+  # If nothing was fetched then use LWP
+  if(!$fetched) {
+    if($url =~ /^https:\/\//i) {
+      report "Falling back to HTTP";
+      $url =~ s/^https:\/\//http:\/\//i;
+    }
+    if(!$opt_k) {
+      report "URLs other than HTTPS are disabled by default, to enable use -k";
+      exit 1;
+    }
+    report "Get certdata with LWP!";
+    if(!defined(${LWP::UserAgent::VERSION})) {
+      report "LWP is not available (LWP::UserAgent not found)";
+      exit 1;
+    }
+    my $ua  = new LWP::UserAgent(agent => "$0/$version");
+    $ua->env_proxy();
+    $resp = $ua->mirror($url, $txt);
+    if($resp && $resp->code eq '304') {
+      report "Not modified";
+      exit 0 if -e $crt && !$opt_f;
+    }
+    else {
+      $fetched = 1;
+      report "Downloaded $txt";
+    }
+    if(!$resp || $resp->code !~ /^(?:200|304)$/) {
+      report "Unable to download latest data: "
+        . ($resp? $resp->code . ' - ' . $resp->message : "LWP failed");
+      exit 1 if -e $crt || ! -r $txt;
+    }
+  }
+}
+
+my $filedate = $resp ? $resp->last_modified : (stat($txt))[9];
+my $datesrc = "as of";
+if(!$filedate) {
+    # mxr.mozilla.org gave us a time, hg.mozilla.org does not!
+    $filedate = time();
+    $datesrc="downloaded on";
+}
+
+# get the hash from the download file
+my $newhash= sha256($txt);
+
+if(!$opt_f && $oldhash eq $newhash) {
+    report "Downloaded file identical to previous run\'s source file. Exiting";
+    if($opt_u && -e $txt && !unlink($txt)) {
+        report "Failed to remove $txt: $!\n";
+    }
+    exit;
+}
+
+report "SHA256 of new file: $newhash";
+
+my $currentdate = scalar gmtime($filedate);
+
+my $format = $opt_t ? "plain text and " : "";
+if( $stdout ) {
+    open(CRT, '> -') or die "Couldn't open STDOUT: $!\n";
+} else {
+    open(CRT,">$crt.~") or die "Couldn't open $crt.~: $!\n";
+}
+print CRT <<EOT;
+##
+## Bundle of CA Root Certificates
+##
+## Certificate data from Mozilla ${datesrc}: ${currentdate} GMT
+##
+## Find updated versions here: https://curl.se/docs/caextract.html
+##
+## This is a bundle of X.509 certificates of public Certificate Authorities
+## (CA). These were automatically extracted from Mozilla's root certificates
+## file (certdata.txt).  This file can be found in the mozilla source tree:
+## ${url}
+##
+## It contains the certificates in ${format}PEM format and therefore
+## can be directly used with curl / libcurl / php_curl, or with
+## an Apache+mod_ssl webserver for SSL client authentication.
+## Just configure this file as the SSLCACertificateFile.
+##
+## Conversion done with mk-ca-bundle.pl version $version.
+## SHA256: $newhash
+##
+
+EOT
+
+report "Processing  '$txt' ...";
+my $caname;
+my $certnum = 0;
+my $skipnum = 0;
+my $start_of_cert = 0;
+my $main_block = 0;
+my $main_block_name;
+my $trust_block = 0;
+my $trust_block_name;
+my @precert;
+my $cka_value;
+my $valid = 0;
+
+open(TXT,"$txt") or die "Couldn't open $txt: $!\n";
+while (<TXT>) {
+  if (/\*\*\*\*\* BEGIN LICENSE BLOCK \*\*\*\*\*/) {
+    print CRT;
+    print if ($opt_l);
+    while (<TXT>) {
+      print CRT;
+      print if ($opt_l);
+      last if (/\*\*\*\*\* END LICENSE BLOCK \*\*\*\*\*/);
+    }
+    next;
+  }
+  # The input file format consists of blocks of Mozilla objects.
+  # The blocks are separated by blank lines but may be related.
+  elsif(/^\s*$/) {
+    $main_block = 0;
+    $trust_block = 0;
+    next;
+  }
+  # Each certificate has a main block.
+  elsif(/^# Certificate "(.*)"/) {
+    (!$main_block && !$trust_block) or die "Unexpected certificate block";
+    $main_block = 1;
+    $main_block_name = $1;
+    # Reset all other certificate variables.
+    $trust_block = 0;
+    $trust_block_name = "";
+    $valid = 0;
+    $start_of_cert = 0;
+    $caname = "";
+    $cka_value = "";
+    undef @precert;
+    next;
+  }
+  # Each certificate's main block is followed by a trust block.
+  elsif(/^# Trust for (?:Certificate )?"(.*)"/) {
+    (!$main_block && !$trust_block) or die "Unexpected trust block";
+    $trust_block = 1;
+    $trust_block_name = $1;
+    if($main_block_name ne $trust_block_name) {
+      die "cert name \"$main_block_name\" != trust name \"$trust_block_name\"";
+    }
+    next;
+  }
+  # Ignore other blocks.
+  #
+  # There is a documentation comment block, a BEGINDATA block, and a bunch of
+  # blocks starting with "# Explicitly Distrust <certname>".
+  #
+  # The latter is for certificates that have already been removed and are not
+  # included. Not all explicitly distrusted certificates are ignored at this
+  # point, just those without an actual certificate.
+  elsif(!$main_block && !$trust_block) {
+    next;
+  }
+  elsif(/^#/) {
+    # The commented lines in a main block are plaintext metadata that describes
+    # the certificate. Issuer, Subject, Fingerprint, etc.
+    if($main_block) {
+      push @precert, $_ if not /^#$/;
+      if(/^# Not Valid After : (.*)/) {
+        my $stamp = $1;
+        use Time::Piece;
+        # Not Valid After : Thu Sep 30 14:01:15 2021
+        my $t = Time::Piece->strptime($stamp, "%a %b %d %H:%M:%S %Y");
+        my $delta = ($t->epoch - time()); # negative means no longer valid
+        if($delta < 0) {
+          $skipnum++;
+          report "Skipping: $main_block_name is not valid anymore" if ($opt_v);
+          $valid = 0;
+        }
+        else {
+          $valid = 1;
+        }
+      }
+    }
+    next;
+  }
+  elsif(!$valid) {
+    next;
+  }
+
+  chomp;
+
+  if($main_block) {
+    if(/^CKA_CLASS CK_OBJECT_CLASS CKO_CERTIFICATE/) {
+      !$start_of_cert or die "Duplicate CKO_CERTIFICATE object";
+      $start_of_cert = 1;
+      next;
+    }
+    elsif(!$start_of_cert) {
+      next;
+    }
+    elsif(/^CKA_LABEL UTF8 \"(.*)\"/) {
+      ($caname eq "") or die "Duplicate CKA_LABEL attribute";
+      $caname = $1;
+      if($caname ne $main_block_name) {
+        die "caname \"$caname\" != cert name \"$main_block_name\"";
+      }
+      next;
+    }
+    elsif(/^CKA_VALUE MULTILINE_OCTAL/) {
+      ($cka_value eq "") or die "Duplicate CKA_VALUE attribute";
+      while (<TXT>) {
+        last if (/^END/);
+        chomp;
+        my @octets = split(/\\/);
+        shift @octets;
+        for (@octets) {
+          $cka_value .= chr(oct);
+        }
+      }
+      next;
+    }
+    elsif (/^CKA_NSS_SERVER_DISTRUST_AFTER (CK_BBOOL CK_FALSE|MULTILINE_OCTAL)/) {
+      # Example:
+      # CKA_NSS_SERVER_DISTRUST_AFTER MULTILINE_OCTAL
+      # \062\060\060\066\061\067\060\060\060\060\060\060\132
+      # END
+      if($1 eq "MULTILINE_OCTAL") {
+        my @timestamp;
+        while (<TXT>) {
+          last if (/^END/);
+          chomp;
+          my @octets = split(/\\/);
+          shift @octets;
+          for (@octets) {
+            push @timestamp, chr(oct);
+          }
+        }
+        scalar(@timestamp) == 13 or die "Failed parsing timestamp";
+        # A trailing Z in the timestamp signifies UTC
+        if($timestamp[12] ne "Z") {
+          report "distrust date stamp is not using UTC";
+        }
+        # Example date: 200617000000Z
+        # Means 2020-06-17 00:00:00 UTC
+        my $distrustat =
+          timegm($timestamp[10] . $timestamp[11], # second
+                 $timestamp[8] . $timestamp[9],   # minute
+                 $timestamp[6] . $timestamp[7],   # hour
+                 $timestamp[4] . $timestamp[5],   # day
+                 ($timestamp[2] . $timestamp[3]) - 1, # month
+                 "20" . $timestamp[0] . $timestamp[1]); # year
+        if(time >= $distrustat) {
+          # not trusted anymore
+          $skipnum++;
+          report "Skipping: $main_block_name is not trusted anymore" if ($opt_v);
+          $valid = 0;
+        }
+        else {
+          # still trusted
+        }
+      }
+      next;
+    }
+    else {
+      next;
+    }
+  }
+
+  if(!$trust_block || !$start_of_cert || $caname eq "" || $cka_value eq "") {
+    die "Certificate extraction failed";
+  }
+
+  my %trust_purposes_by_level;
+
+  if(/^CKA_CLASS CK_OBJECT_CLASS CKO_NSS_TRUST/) {
+    # now scan the trust part to determine how we should trust this cert
+    while (<TXT>) {
+      if(/^\s*$/) {
+        $trust_block = 0;
+        last;
+      }
+      if (/^CKA_TRUST_([A-Z_]+)\s+CK_TRUST\s+CKT_NSS_([A-Z_]+)\s*$/) {
+        if ( !is_in_list($1,@valid_mozilla_trust_purposes) ) {
+          report "Warning: Unrecognized trust purpose for cert: $caname. Trust purpose: $1. Trust Level: $2";
+        } elsif ( !is_in_list($2,@valid_mozilla_trust_levels) ) {
+          report "Warning: Unrecognized trust level for cert: $caname. Trust purpose: $1. Trust Level: $2";
+        } else {
+          push @{$trust_purposes_by_level{$2}}, $1;
+        }
+      }
+    }
+
+    # Sanity check that an explicitly distrusted certificate only has trust
+    # purposes with a trust level of NOT_TRUSTED.
+    #
+    # Certificate objects that are explicitly distrusted are in a certificate
+    # block that starts # Certificate "Explicitly Distrust(ed) <certname>",
+    # where "Explicitly Distrust(ed) " was prepended to the original cert name.
+    if($caname =~ /distrust/i ||
+       $main_block_name =~ /distrust/i ||
+       $trust_block_name =~ /distrust/i) {
+      my @levels = keys %trust_purposes_by_level;
+      if(scalar(@levels) != 1 || $levels[0] ne "NOT_TRUSTED") {
+        die "\"$caname\" must have all trust purposes at level NOT_TRUSTED.";
+      }
+    }
+
+    if ( !should_output_cert(%trust_purposes_by_level) ) {
+      $skipnum ++;
+      report "Skipping: $caname lacks acceptable trust level" if ($opt_v);
+    } else {
+      my $encoded = MIME::Base64::encode_base64($cka_value, '');
+      $encoded =~ s/(.{1,${opt_w}})/$1\n/g;
+      my $pem = "-----BEGIN CERTIFICATE-----\n"
+              . $encoded
+              . "-----END CERTIFICATE-----\n";
+      print CRT "\n$caname\n";
+      my $maxStringLength = length(decode('UTF-8', $caname, Encode::FB_CROAK | Encode::LEAVE_SRC));
+      print CRT ("=" x $maxStringLength . "\n");
+      if ($opt_t) {
+        foreach my $key (sort keys %trust_purposes_by_level) {
+           my $string = $key . ": " . join(", ", @{$trust_purposes_by_level{$key}});
+           print CRT $string . "\n";
+        }
+      }
+      if($opt_m) {
+        print CRT for @precert;
+      }
+      if (!$opt_t) {
+        print CRT $pem;
+      } else {
+        my $pipe = "";
+        foreach my $hash (@included_signature_algorithms) {
+          $pipe = "|$openssl x509 -" . $hash . " -fingerprint -noout -inform PEM";
+          if (!$stdout) {
+            $pipe .= " >> $crt.~";
+            close(CRT) or die "Couldn't close $crt.~: $!";
+          }
+          open(TMP, $pipe) or die "Couldn't open openssl pipe: $!";
+          print TMP $pem;
+          close(TMP) or die "Couldn't close openssl pipe: $!";
+          if (!$stdout) {
+            open(CRT, ">>$crt.~") or die "Couldn't open $crt.~: $!";
+          }
+        }
+        $pipe = "|$openssl x509 -text -inform PEM";
+        if (!$stdout) {
+          $pipe .= " >> $crt.~";
+          close(CRT) or die "Couldn't close $crt.~: $!";
+        }
+        open(TMP, $pipe) or die "Couldn't open openssl pipe: $!";
+        print TMP $pem;
+        close(TMP) or die "Couldn't close openssl pipe: $!";
+        if (!$stdout) {
+          open(CRT, ">>$crt.~") or die "Couldn't open $crt.~: $!";
+        }
+      }
+      report "Processed: $caname" if ($opt_v);
+      $certnum ++;
+    }
+  }
+}
+close(TXT) or die "Couldn't close $txt: $!\n";
+close(CRT) or die "Couldn't close $crt.~: $!\n";
+unless( $stdout ) {
+    if ($opt_b && -e $crt) {
+        my $bk = 1;
+        while (-e "$crt.~${bk}~") {
+            $bk++;
+        }
+        rename $crt, "$crt.~${bk}~" or die "Failed to create backup $crt.~$bk}~: $!\n";
+    } elsif( -e $crt ) {
+        unlink( $crt ) or die "Failed to remove $crt: $!\n";
+    }
+    rename "$crt.~", $crt or die "Failed to rename $crt.~ to $crt: $!\n";
+}
+if($opt_u && -e $txt && !unlink($txt)) {
+  report "Failed to remove $txt: $!\n";
+}
+report "Done ($certnum CA certs processed, $skipnum skipped).";

3rdparty/curl/include/curl/curlver.h

@@ -0,0 +1,79 @@
+#ifndef CURLINC_CURLVER_H
+#define CURLINC_CURLVER_H
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at https://curl.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ * SPDX-License-Identifier: curl
+ *
+ ***************************************************************************/
+
+/* This header file contains nothing but libcurl version info, generated by
+   a script at release-time. This was made its own header file in 7.11.2 */
+
+/* This is the global package copyright */
+#define LIBCURL_COPYRIGHT "Daniel Stenberg, <daniel@haxx.se>."
+
+/* This is the version number of the libcurl package from which this header
+   file origins: */
+#define LIBCURL_VERSION "8.11.0-DEV"
+
+/* The numeric version number is also available "in parts" by using these
+   defines: */
+#define LIBCURL_VERSION_MAJOR 8
+#define LIBCURL_VERSION_MINOR 11
+#define LIBCURL_VERSION_PATCH 0
+
+/* This is the numeric version of the libcurl version number, meant for easier
+   parsing and comparisons by programs. The LIBCURL_VERSION_NUM define will
+   always follow this syntax:
+
+         0xXXYYZZ
+
+   Where XX, YY and ZZ are the main version, release and patch numbers in
+   hexadecimal (using 8 bits each). All three numbers are always represented
+   using two digits. 1.2 would appear as "0x010200" while version 9.11.7
+   appears as "0x090b07".
+
+   This 6-digit (24 bits) hexadecimal number does not show pre-release number,
+   and it is always a greater number in a more recent release. It makes
+   comparisons with greater than and less than work.
+
+   Note: This define is the full hex number and _does not_ use the
+   CURL_VERSION_BITS() macro since curl's own configure script greps for it
+   and needs it to contain the full number.
+*/
+#define LIBCURL_VERSION_NUM 0x080b00
+
+/*
+ * This is the date and time when the full source package was created. The
+ * timestamp is not stored in git, as the timestamp is properly set in the
+ * tarballs by the maketgz script.
+ *
+ * The format of the date follows this template:
+ *
+ * "2007-11-23"
+ */
+#define LIBCURL_TIMESTAMP "[unreleased]"
+
+#define CURL_VERSION_BITS(x,y,z) ((x)<<16|(y)<<8|(z))
+#define CURL_AT_LEAST_VERSION(x,y,z) \
+  (LIBCURL_VERSION_NUM >= CURL_VERSION_BITS(x, y, z))
+
+#endif /* CURLINC_CURLVER_H */

3rdparty/curl/include/curl/easy.h

@@ -0,0 +1,125 @@
+#ifndef CURLINC_EASY_H
+#define CURLINC_EASY_H
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at https://curl.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ * SPDX-License-Identifier: curl
+ *
+ ***************************************************************************/
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+/* Flag bits in the curl_blob struct: */
+#define CURL_BLOB_COPY   1 /* tell libcurl to copy the data */
+#define CURL_BLOB_NOCOPY 0 /* tell libcurl to NOT copy the data */
+
+struct curl_blob {
+  void *data;
+  size_t len;
+  unsigned int flags; /* bit 0 is defined, the rest are reserved and should be
+                         left zeroes */
+};
+
+CURL_EXTERN CURL *curl_easy_init(void);
+CURL_EXTERN CURLcode curl_easy_setopt(CURL *curl, CURLoption option, ...);
+CURL_EXTERN CURLcode curl_easy_perform(CURL *curl);
+CURL_EXTERN void curl_easy_cleanup(CURL *curl);
+
+/*
+ * NAME curl_easy_getinfo()
+ *
+ * DESCRIPTION
+ *
+ * Request internal information from the curl session with this function.
+ * The third argument MUST be pointing to the specific type of the used option
+ * which is documented in each manpage of the option. The data pointed to
+ * will be filled in accordingly and can be relied upon only if the function
+ * returns CURLE_OK. This function is intended to get used *AFTER* a performed
+ * transfer, all results from this function are undefined until the transfer
+ * is completed.
+ */
+CURL_EXTERN CURLcode curl_easy_getinfo(CURL *curl, CURLINFO info, ...);
+
+
+/*
+ * NAME curl_easy_duphandle()
+ *
+ * DESCRIPTION
+ *
+ * Creates a new curl session handle with the same options set for the handle
+ * passed in. Duplicating a handle could only be a matter of cloning data and
+ * options, internal state info and things like persistent connections cannot
+ * be transferred. It is useful in multithreaded applications when you can run
+ * curl_easy_duphandle() for each new thread to avoid a series of identical
+ * curl_easy_setopt() invokes in every thread.
+ */
+CURL_EXTERN CURL *curl_easy_duphandle(CURL *curl);
+
+/*
+ * NAME curl_easy_reset()
+ *
+ * DESCRIPTION
+ *
+ * Re-initializes a CURL handle to the default values. This puts back the
+ * handle to the same state as it was in when it was just created.
+ *
+ * It does keep: live connections, the Session ID cache, the DNS cache and the
+ * cookies.
+ */
+CURL_EXTERN void curl_easy_reset(CURL *curl);
+
+/*
+ * NAME curl_easy_recv()
+ *
+ * DESCRIPTION
+ *
+ * Receives data from the connected socket. Use after successful
+ * curl_easy_perform() with CURLOPT_CONNECT_ONLY option.
+ */
+CURL_EXTERN CURLcode curl_easy_recv(CURL *curl, void *buffer, size_t buflen,
+                                    size_t *n);
+
+/*
+ * NAME curl_easy_send()
+ *
+ * DESCRIPTION
+ *
+ * Sends data over the connected socket. Use after successful
+ * curl_easy_perform() with CURLOPT_CONNECT_ONLY option.
+ */
+CURL_EXTERN CURLcode curl_easy_send(CURL *curl, const void *buffer,
+                                    size_t buflen, size_t *n);
+
+
+/*
+ * NAME curl_easy_upkeep()
+ *
+ * DESCRIPTION
+ *
+ * Performs connection upkeep for the given session handle.
+ */
+CURL_EXTERN CURLcode curl_easy_upkeep(CURL *curl);
+
+#ifdef  __cplusplus
+} /* end of extern "C" */
+#endif
+
+#endif

3rdparty/curl/include/curl/header.h

@@ -0,0 +1,74 @@
+#ifndef CURLINC_HEADER_H
+#define CURLINC_HEADER_H
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at https://curl.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ * SPDX-License-Identifier: curl
+ *
+ ***************************************************************************/
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+struct curl_header {
+  char *name;    /* this might not use the same case */
+  char *value;
+  size_t amount; /* number of headers using this name  */
+  size_t index;  /* ... of this instance, 0 or higher */
+  unsigned int origin; /* see bits below */
+  void *anchor; /* handle privately used by libcurl */
+};
+
+/* 'origin' bits */
+#define CURLH_HEADER    (1<<0) /* plain server header */
+#define CURLH_TRAILER   (1<<1) /* trailers */
+#define CURLH_CONNECT   (1<<2) /* CONNECT headers */
+#define CURLH_1XX       (1<<3) /* 1xx headers */
+#define CURLH_PSEUDO    (1<<4) /* pseudo headers */
+
+typedef enum {
+  CURLHE_OK,
+  CURLHE_BADINDEX,      /* header exists but not with this index */
+  CURLHE_MISSING,       /* no such header exists */
+  CURLHE_NOHEADERS,     /* no headers at all exist (yet) */
+  CURLHE_NOREQUEST,     /* no request with this number was used */
+  CURLHE_OUT_OF_MEMORY, /* out of memory while processing */
+  CURLHE_BAD_ARGUMENT,  /* a function argument was not okay */
+  CURLHE_NOT_BUILT_IN   /* if API was disabled in the build */
+} CURLHcode;
+
+CURL_EXTERN CURLHcode curl_easy_header(CURL *easy,
+                                       const char *name,
+                                       size_t index,
+                                       unsigned int origin,
+                                       int request,
+                                       struct curl_header **hout);
+
+CURL_EXTERN struct curl_header *curl_easy_nextheader(CURL *easy,
+                                                     unsigned int origin,
+                                                     int request,
+                                                     struct curl_header *prev);
+
+#ifdef __cplusplus
+} /* end of extern "C" */
+#endif
+
+#endif /* CURLINC_HEADER_H */

3rdparty/curl/include/curl/mprintf.h

@@ -0,0 +1,85 @@
+#ifndef CURLINC_MPRINTF_H
+#define CURLINC_MPRINTF_H
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at https://curl.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ * SPDX-License-Identifier: curl
+ *
+ ***************************************************************************/
+
+#include <stdarg.h>
+#include <stdio.h> /* needed for FILE */
+#include "curl.h"  /* for CURL_EXTERN */
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+#ifndef CURL_TEMP_PRINTF
+#if (defined(__GNUC__) || defined(__clang__) ||                         \
+  defined(__IAR_SYSTEMS_ICC__)) &&                                      \
+  defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) &&         \
+  !defined(CURL_NO_FMT_CHECKS)
+#if defined(__MINGW32__) && !defined(__clang__)
+#if defined(__MINGW_PRINTF_FORMAT)  /* mingw-w64 3.0.0+. Needs stdio.h. */
+#define CURL_TEMP_PRINTF(fmt, arg) \
+  __attribute__((format(__MINGW_PRINTF_FORMAT, fmt, arg)))
+#else
+#define CURL_TEMP_PRINTF(fmt, arg)
+#endif
+#else
+#define CURL_TEMP_PRINTF(fmt, arg) \
+  __attribute__((format(printf, fmt, arg)))
+#endif
+#else
+#define CURL_TEMP_PRINTF(fmt, arg)
+#endif
+#endif
+
+CURL_EXTERN int curl_mprintf(const char *format, ...)
+  CURL_TEMP_PRINTF(1, 2);
+CURL_EXTERN int curl_mfprintf(FILE *fd, const char *format, ...)
+  CURL_TEMP_PRINTF(2, 3);
+CURL_EXTERN int curl_msprintf(char *buffer, const char *format, ...)
+  CURL_TEMP_PRINTF(2, 3);
+CURL_EXTERN int curl_msnprintf(char *buffer, size_t maxlength,
+                               const char *format, ...)
+  CURL_TEMP_PRINTF(3, 4);
+CURL_EXTERN int curl_mvprintf(const char *format, va_list args)
+  CURL_TEMP_PRINTF(1, 0);
+CURL_EXTERN int curl_mvfprintf(FILE *fd, const char *format, va_list args)
+  CURL_TEMP_PRINTF(2, 0);
+CURL_EXTERN int curl_mvsprintf(char *buffer, const char *format, va_list args)
+  CURL_TEMP_PRINTF(2, 0);
+CURL_EXTERN int curl_mvsnprintf(char *buffer, size_t maxlength,
+                                const char *format, va_list args)
+  CURL_TEMP_PRINTF(3, 0);
+CURL_EXTERN char *curl_maprintf(const char *format, ...)
+  CURL_TEMP_PRINTF(1, 2);
+CURL_EXTERN char *curl_mvaprintf(const char *format, va_list args)
+  CURL_TEMP_PRINTF(1, 0);
+
+#undef CURL_TEMP_PRINTF
+
+#ifdef  __cplusplus
+} /* end of extern "C" */
+#endif
+
+#endif /* CURLINC_MPRINTF_H */

3rdparty/curl/include/curl/multi.h

@@ -0,0 +1,485 @@
+#ifndef CURLINC_MULTI_H
+#define CURLINC_MULTI_H
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at https://curl.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ * SPDX-License-Identifier: curl
+ *
+ ***************************************************************************/
+/*
+  This is an "external" header file. Do not give away any internals here!
+
+  GOALS
+
+  o Enable a "pull" interface. The application that uses libcurl decides where
+    and when to ask libcurl to get/send data.
+
+  o Enable multiple simultaneous transfers in the same thread without making it
+    complicated for the application.
+
+  o Enable the application to select() on its own file descriptors and curl's
+    file descriptors simultaneous easily.
+
+*/
+
+/*
+ * This header file should not really need to include "curl.h" since curl.h
+ * itself includes this file and we expect user applications to do #include
+ * <curl/curl.h> without the need for especially including multi.h.
+ *
+ * For some reason we added this include here at one point, and rather than to
+ * break existing (wrongly written) libcurl applications, we leave it as-is
+ * but with this warning attached.
+ */
+#include "curl.h"
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+#if defined(BUILDING_LIBCURL) || defined(CURL_STRICTER)
+typedef struct Curl_multi CURLM;
+#else
+typedef void CURLM;
+#endif
+
+typedef enum {
+  CURLM_CALL_MULTI_PERFORM = -1, /* please call curl_multi_perform() or
+                                    curl_multi_socket*() soon */
+  CURLM_OK,
+  CURLM_BAD_HANDLE,      /* the passed-in handle is not a valid CURLM handle */
+  CURLM_BAD_EASY_HANDLE, /* an easy handle was not good/valid */
+  CURLM_OUT_OF_MEMORY,   /* if you ever get this, you are in deep sh*t */
+  CURLM_INTERNAL_ERROR,  /* this is a libcurl bug */
+  CURLM_BAD_SOCKET,      /* the passed in socket argument did not match */
+  CURLM_UNKNOWN_OPTION,  /* curl_multi_setopt() with unsupported option */
+  CURLM_ADDED_ALREADY,   /* an easy handle already added to a multi handle was
+                            attempted to get added - again */
+  CURLM_RECURSIVE_API_CALL, /* an api function was called from inside a
+                               callback */
+  CURLM_WAKEUP_FAILURE,  /* wakeup is unavailable or failed */
+  CURLM_BAD_FUNCTION_ARGUMENT, /* function called with a bad parameter */
+  CURLM_ABORTED_BY_CALLBACK,
+  CURLM_UNRECOVERABLE_POLL,
+  CURLM_LAST
+} CURLMcode;
+
+/* just to make code nicer when using curl_multi_socket() you can now check
+   for CURLM_CALL_MULTI_SOCKET too in the same style it works for
+   curl_multi_perform() and CURLM_CALL_MULTI_PERFORM */
+#define CURLM_CALL_MULTI_SOCKET CURLM_CALL_MULTI_PERFORM
+
+/* bitmask bits for CURLMOPT_PIPELINING */
+#define CURLPIPE_NOTHING   0L
+#define CURLPIPE_HTTP1     1L
+#define CURLPIPE_MULTIPLEX 2L
+
+typedef enum {
+  CURLMSG_NONE, /* first, not used */
+  CURLMSG_DONE, /* This easy handle has completed. 'result' contains
+                   the CURLcode of the transfer */
+  CURLMSG_LAST /* last, not used */
+} CURLMSG;
+
+struct CURLMsg {
+  CURLMSG msg;       /* what this message means */
+  CURL *easy_handle; /* the handle it concerns */
+  union {
+    void *whatever;    /* message-specific data */
+    CURLcode result;   /* return code for transfer */
+  } data;
+};
+typedef struct CURLMsg CURLMsg;
+
+/* Based on poll(2) structure and values.
+ * We do not use pollfd and POLL* constants explicitly
+ * to cover platforms without poll(). */
+#define CURL_WAIT_POLLIN    0x0001
+#define CURL_WAIT_POLLPRI   0x0002
+#define CURL_WAIT_POLLOUT   0x0004
+
+struct curl_waitfd {
+  curl_socket_t fd;
+  short events;
+  short revents;
+};
+
+/*
+ * Name:    curl_multi_init()
+ *
+ * Desc:    initialize multi-style curl usage
+ *
+ * Returns: a new CURLM handle to use in all 'curl_multi' functions.
+ */
+CURL_EXTERN CURLM *curl_multi_init(void);
+
+/*
+ * Name:    curl_multi_add_handle()
+ *
+ * Desc:    add a standard curl handle to the multi stack
+ *
+ * Returns: CURLMcode type, general multi error code.
+ */
+CURL_EXTERN CURLMcode curl_multi_add_handle(CURLM *multi_handle,
+                                            CURL *curl_handle);
+
+ /*
+  * Name:    curl_multi_remove_handle()
+  *
+  * Desc:    removes a curl handle from the multi stack again
+  *
+  * Returns: CURLMcode type, general multi error code.
+  */
+CURL_EXTERN CURLMcode curl_multi_remove_handle(CURLM *multi_handle,
+                                               CURL *curl_handle);
+
+ /*
+  * Name:    curl_multi_fdset()
+  *
+  * Desc:    Ask curl for its fd_set sets. The app can use these to select() or
+  *          poll() on. We want curl_multi_perform() called as soon as one of
+  *          them are ready.
+  *
+  * Returns: CURLMcode type, general multi error code.
+  */
+CURL_EXTERN CURLMcode curl_multi_fdset(CURLM *multi_handle,
+                                       fd_set *read_fd_set,
+                                       fd_set *write_fd_set,
+                                       fd_set *exc_fd_set,
+                                       int *max_fd);
+
+/*
+ * Name:     curl_multi_wait()
+ *
+ * Desc:     Poll on all fds within a CURLM set as well as any
+ *           additional fds passed to the function.
+ *
+ * Returns:  CURLMcode type, general multi error code.
+ */
+CURL_EXTERN CURLMcode curl_multi_wait(CURLM *multi_handle,
+                                      struct curl_waitfd extra_fds[],
+                                      unsigned int extra_nfds,
+                                      int timeout_ms,
+                                      int *ret);
+
+/*
+ * Name:     curl_multi_poll()
+ *
+ * Desc:     Poll on all fds within a CURLM set as well as any
+ *           additional fds passed to the function.
+ *
+ * Returns:  CURLMcode type, general multi error code.
+ */
+CURL_EXTERN CURLMcode curl_multi_poll(CURLM *multi_handle,
+                                      struct curl_waitfd extra_fds[],
+                                      unsigned int extra_nfds,
+                                      int timeout_ms,
+                                      int *ret);
+
+/*
+ * Name:     curl_multi_wakeup()
+ *
+ * Desc:     wakes up a sleeping curl_multi_poll call.
+ *
+ * Returns:  CURLMcode type, general multi error code.
+ */
+CURL_EXTERN CURLMcode curl_multi_wakeup(CURLM *multi_handle);
+
+ /*
+  * Name:    curl_multi_perform()
+  *
+  * Desc:    When the app thinks there is data available for curl it calls this
+  *          function to read/write whatever there is right now. This returns
+  *          as soon as the reads and writes are done. This function does not
+  *          require that there actually is data available for reading or that
+  *          data can be written, it can be called just in case. It returns
+  *          the number of handles that still transfer data in the second
+  *          argument's integer-pointer.
+  *
+  * Returns: CURLMcode type, general multi error code. *NOTE* that this only
+  *          returns errors etc regarding the whole multi stack. There might
+  *          still have occurred problems on individual transfers even when
+  *          this returns OK.
+  */
+CURL_EXTERN CURLMcode curl_multi_perform(CURLM *multi_handle,
+                                         int *running_handles);
+
+ /*
+  * Name:    curl_multi_cleanup()
+  *
+  * Desc:    Cleans up and removes a whole multi stack. It does not free or
+  *          touch any individual easy handles in any way. We need to define
+  *          in what state those handles will be if this function is called
+  *          in the middle of a transfer.
+  *
+  * Returns: CURLMcode type, general multi error code.
+  */
+CURL_EXTERN CURLMcode curl_multi_cleanup(CURLM *multi_handle);
+
+/*
+ * Name:    curl_multi_info_read()
+ *
+ * Desc:    Ask the multi handle if there is any messages/informationals from
+ *          the individual transfers. Messages include informationals such as
+ *          error code from the transfer or just the fact that a transfer is
+ *          completed. More details on these should be written down as well.
+ *
+ *          Repeated calls to this function will return a new struct each
+ *          time, until a special "end of msgs" struct is returned as a signal
+ *          that there is no more to get at this point.
+ *
+ *          The data the returned pointer points to will not survive calling
+ *          curl_multi_cleanup().
+ *
+ *          The 'CURLMsg' struct is meant to be very simple and only contain
+ *          very basic information. If more involved information is wanted,
+ *          we will provide the particular "transfer handle" in that struct
+ *          and that should/could/would be used in subsequent
+ *          curl_easy_getinfo() calls (or similar). The point being that we
+ *          must never expose complex structs to applications, as then we will
+ *          undoubtably get backwards compatibility problems in the future.
+ *
+ * Returns: A pointer to a filled-in struct, or NULL if it failed or ran out
+ *          of structs. It also writes the number of messages left in the
+ *          queue (after this read) in the integer the second argument points
+ *          to.
+ */
+CURL_EXTERN CURLMsg *curl_multi_info_read(CURLM *multi_handle,
+                                          int *msgs_in_queue);
+
+/*
+ * Name:    curl_multi_strerror()
+ *
+ * Desc:    The curl_multi_strerror function may be used to turn a CURLMcode
+ *          value into the equivalent human readable error string. This is
+ *          useful for printing meaningful error messages.
+ *
+ * Returns: A pointer to a null-terminated error message.
+ */
+CURL_EXTERN const char *curl_multi_strerror(CURLMcode);
+
+/*
+ * Name:    curl_multi_socket() and
+ *          curl_multi_socket_all()
+ *
+ * Desc:    An alternative version of curl_multi_perform() that allows the
+ *          application to pass in one of the file descriptors that have been
+ *          detected to have "action" on them and let libcurl perform.
+ *          See manpage for details.
+ */
+#define CURL_POLL_NONE   0
+#define CURL_POLL_IN     1
+#define CURL_POLL_OUT    2
+#define CURL_POLL_INOUT  3
+#define CURL_POLL_REMOVE 4
+
+#define CURL_SOCKET_TIMEOUT CURL_SOCKET_BAD
+
+#define CURL_CSELECT_IN   0x01
+#define CURL_CSELECT_OUT  0x02
+#define CURL_CSELECT_ERR  0x04
+
+typedef int (*curl_socket_callback)(CURL *easy,      /* easy handle */
+                                    curl_socket_t s, /* socket */
+                                    int what,        /* see above */
+                                    void *userp,     /* private callback
+                                                        pointer */
+                                    void *socketp);  /* private socket
+                                                        pointer */
+/*
+ * Name:    curl_multi_timer_callback
+ *
+ * Desc:    Called by libcurl whenever the library detects a change in the
+ *          maximum number of milliseconds the app is allowed to wait before
+ *          curl_multi_socket() or curl_multi_perform() must be called
+ *          (to allow libcurl's timed events to take place).
+ *
+ * Returns: The callback should return zero.
+ */
+typedef int (*curl_multi_timer_callback)(CURLM *multi,    /* multi handle */
+                                         long timeout_ms, /* see above */
+                                         void *userp);    /* private callback
+                                                             pointer */
+
+CURL_EXTERN CURLMcode CURL_DEPRECATED(7.19.5, "Use curl_multi_socket_action()")
+curl_multi_socket(CURLM *multi_handle, curl_socket_t s, int *running_handles);
+
+CURL_EXTERN CURLMcode curl_multi_socket_action(CURLM *multi_handle,
+                                               curl_socket_t s,
+                                               int ev_bitmask,
+                                               int *running_handles);
+
+CURL_EXTERN CURLMcode CURL_DEPRECATED(7.19.5, "Use curl_multi_socket_action()")
+curl_multi_socket_all(CURLM *multi_handle, int *running_handles);
+
+#ifndef CURL_ALLOW_OLD_MULTI_SOCKET
+/* This macro below was added in 7.16.3 to push users who recompile to use
+   the new curl_multi_socket_action() instead of the old curl_multi_socket()
+*/
+#define curl_multi_socket(x,y,z) curl_multi_socket_action(x,y,0,z)
+#endif
+
+/*
+ * Name:    curl_multi_timeout()
+ *
+ * Desc:    Returns the maximum number of milliseconds the app is allowed to
+ *          wait before curl_multi_socket() or curl_multi_perform() must be
+ *          called (to allow libcurl's timed events to take place).
+ *
+ * Returns: CURLM error code.
+ */
+CURL_EXTERN CURLMcode curl_multi_timeout(CURLM *multi_handle,
+                                         long *milliseconds);
+
+typedef enum {
+  /* This is the socket callback function pointer */
+  CURLOPT(CURLMOPT_SOCKETFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 1),
+
+  /* This is the argument passed to the socket callback */
+  CURLOPT(CURLMOPT_SOCKETDATA, CURLOPTTYPE_OBJECTPOINT, 2),
+
+    /* set to 1 to enable pipelining for this multi handle */
+  CURLOPT(CURLMOPT_PIPELINING, CURLOPTTYPE_LONG, 3),
+
+   /* This is the timer callback function pointer */
+  CURLOPT(CURLMOPT_TIMERFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 4),
+
+  /* This is the argument passed to the timer callback */
+  CURLOPT(CURLMOPT_TIMERDATA, CURLOPTTYPE_OBJECTPOINT, 5),
+
+  /* maximum number of entries in the connection cache */
+  CURLOPT(CURLMOPT_MAXCONNECTS, CURLOPTTYPE_LONG, 6),
+
+  /* maximum number of (pipelining) connections to one host */
+  CURLOPT(CURLMOPT_MAX_HOST_CONNECTIONS, CURLOPTTYPE_LONG, 7),
+
+  /* maximum number of requests in a pipeline */
+  CURLOPT(CURLMOPT_MAX_PIPELINE_LENGTH, CURLOPTTYPE_LONG, 8),
+
+  /* a connection with a content-length longer than this
+     will not be considered for pipelining */
+  CURLOPT(CURLMOPT_CONTENT_LENGTH_PENALTY_SIZE, CURLOPTTYPE_OFF_T, 9),
+
+  /* a connection with a chunk length longer than this
+     will not be considered for pipelining */
+  CURLOPT(CURLMOPT_CHUNK_LENGTH_PENALTY_SIZE, CURLOPTTYPE_OFF_T, 10),
+
+  /* a list of site names(+port) that are blocked from pipelining */
+  CURLOPT(CURLMOPT_PIPELINING_SITE_BL, CURLOPTTYPE_OBJECTPOINT, 11),
+
+  /* a list of server types that are blocked from pipelining */
+  CURLOPT(CURLMOPT_PIPELINING_SERVER_BL, CURLOPTTYPE_OBJECTPOINT, 12),
+
+  /* maximum number of open connections in total */
+  CURLOPT(CURLMOPT_MAX_TOTAL_CONNECTIONS, CURLOPTTYPE_LONG, 13),
+
+   /* This is the server push callback function pointer */
+  CURLOPT(CURLMOPT_PUSHFUNCTION, CURLOPTTYPE_FUNCTIONPOINT, 14),
+
+  /* This is the argument passed to the server push callback */
+  CURLOPT(CURLMOPT_PUSHDATA, CURLOPTTYPE_OBJECTPOINT, 15),
+
+  /* maximum number of concurrent streams to support on a connection */
+  CURLOPT(CURLMOPT_MAX_CONCURRENT_STREAMS, CURLOPTTYPE_LONG, 16),
+
+  CURLMOPT_LASTENTRY /* the last unused */
+} CURLMoption;
+
+
+/*
+ * Name:    curl_multi_setopt()
+ *
+ * Desc:    Sets options for the multi handle.
+ *
+ * Returns: CURLM error code.
+ */
+CURL_EXTERN CURLMcode curl_multi_setopt(CURLM *multi_handle,
+                                        CURLMoption option, ...);
+
+
+/*
+ * Name:    curl_multi_assign()
+ *
+ * Desc:    This function sets an association in the multi handle between the
+ *          given socket and a private pointer of the application. This is
+ *          (only) useful for curl_multi_socket uses.
+ *
+ * Returns: CURLM error code.
+ */
+CURL_EXTERN CURLMcode curl_multi_assign(CURLM *multi_handle,
+                                        curl_socket_t sockfd, void *sockp);
+
+/*
+ * Name:    curl_multi_get_handles()
+ *
+ * Desc:    Returns an allocated array holding all handles currently added to
+ *          the multi handle. Marks the final entry with a NULL pointer. If
+ *          there is no easy handle added to the multi handle, this function
+ *          returns an array with the first entry as a NULL pointer.
+ *
+ * Returns: NULL on failure, otherwise a CURL **array pointer
+ */
+CURL_EXTERN CURL **curl_multi_get_handles(CURLM *multi_handle);
+
+/*
+ * Name: curl_push_callback
+ *
+ * Desc: This callback gets called when a new stream is being pushed by the
+ *       server. It approves or denies the new stream. It can also decide
+ *       to completely fail the connection.
+ *
+ * Returns: CURL_PUSH_OK, CURL_PUSH_DENY or CURL_PUSH_ERROROUT
+ */
+#define CURL_PUSH_OK       0
+#define CURL_PUSH_DENY     1
+#define CURL_PUSH_ERROROUT 2 /* added in 7.72.0 */
+
+struct curl_pushheaders;  /* forward declaration only */
+
+CURL_EXTERN char *curl_pushheader_bynum(struct curl_pushheaders *h,
+                                        size_t num);
+CURL_EXTERN char *curl_pushheader_byname(struct curl_pushheaders *h,
+                                         const char *name);
+
+typedef int (*curl_push_callback)(CURL *parent,
+                                  CURL *easy,
+                                  size_t num_headers,
+                                  struct curl_pushheaders *headers,
+                                  void *userp);
+
+/*
+ * Name:    curl_multi_waitfds()
+ *
+ * Desc:    Ask curl for fds for polling. The app can use these to poll on.
+ *          We want curl_multi_perform() called as soon as one of them are
+ *          ready. Passing zero size allows to get just a number of fds.
+ *
+ * Returns: CURLMcode type, general multi error code.
+ */
+CURL_EXTERN CURLMcode curl_multi_waitfds(CURLM *multi,
+                                         struct curl_waitfd *ufds,
+                                         unsigned int size,
+                                         unsigned int *fd_count);
+
+#ifdef __cplusplus
+} /* end of extern "C" */
+#endif
+
+#endif

3rdparty/curl/include/curl/options.h

@@ -0,0 +1,70 @@
+#ifndef CURLINC_OPTIONS_H
+#define CURLINC_OPTIONS_H
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at https://curl.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ * SPDX-License-Identifier: curl
+ *
+ ***************************************************************************/
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+typedef enum {
+  CURLOT_LONG,    /* long (a range of values) */
+  CURLOT_VALUES,  /*      (a defined set or bitmask) */
+  CURLOT_OFF_T,   /* curl_off_t (a range of values) */
+  CURLOT_OBJECT,  /* pointer (void *) */
+  CURLOT_STRING,  /*         (char * to null-terminated buffer) */
+  CURLOT_SLIST,   /*         (struct curl_slist *) */
+  CURLOT_CBPTR,   /*         (void * passed as-is to a callback) */
+  CURLOT_BLOB,    /* blob (struct curl_blob *) */
+  CURLOT_FUNCTION /* function pointer */
+} curl_easytype;
+
+/* Flag bits */
+
+/* "alias" means it is provided for old programs to remain functional,
+   we prefer another name */
+#define CURLOT_FLAG_ALIAS (1<<0)
+
+/* The CURLOPTTYPE_* id ranges can still be used to figure out what type/size
+   to use for curl_easy_setopt() for the given id */
+struct curl_easyoption {
+  const char *name;
+  CURLoption id;
+  curl_easytype type;
+  unsigned int flags;
+};
+
+CURL_EXTERN const struct curl_easyoption *
+curl_easy_option_by_name(const char *name);
+
+CURL_EXTERN const struct curl_easyoption *
+curl_easy_option_by_id(CURLoption id);
+
+CURL_EXTERN const struct curl_easyoption *
+curl_easy_option_next(const struct curl_easyoption *prev);
+
+#ifdef __cplusplus
+} /* end of extern "C" */
+#endif
+#endif /* CURLINC_OPTIONS_H */

3rdparty/curl/include/curl/stdcheaders.h

@@ -0,0 +1,35 @@
+#ifndef CURLINC_STDCHEADERS_H
+#define CURLINC_STDCHEADERS_H
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at https://curl.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ * SPDX-License-Identifier: curl
+ *
+ ***************************************************************************/
+
+#include <sys/types.h>
+
+size_t fread(void *, size_t, size_t, FILE *);
+size_t fwrite(const void *, size_t, size_t, FILE *);
+
+int strcasecmp(const char *, const char *);
+int strncasecmp(const char *, const char *, size_t);
+
+#endif /* CURLINC_STDCHEADERS_H */

3rdparty/curl/include/curl/system.h

@@ -0,0 +1,496 @@
+#ifndef CURLINC_SYSTEM_H
+#define CURLINC_SYSTEM_H
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at https://curl.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ * SPDX-License-Identifier: curl
+ *
+ ***************************************************************************/
+
+/*
+ * Try to keep one section per platform, compiler and architecture, otherwise,
+ * if an existing section is reused for a different one and later on the
+ * original is adjusted, probably the piggybacking one can be adversely
+ * changed.
+ *
+ * In order to differentiate between platforms/compilers/architectures use
+ * only compiler built-in predefined preprocessor symbols.
+ *
+ * curl_off_t
+ * ----------
+ *
+ * For any given platform/compiler curl_off_t must be typedef'ed to a 64-bit
+ * wide signed integral data type. The width of this data type must remain
+ * constant and independent of any possible large file support settings.
+ *
+ * As an exception to the above, curl_off_t shall be typedef'ed to a 32-bit
+ * wide signed integral data type if there is no 64-bit type.
+ *
+ * As a general rule, curl_off_t shall not be mapped to off_t. This rule shall
+ * only be violated if off_t is the only 64-bit data type available and the
+ * size of off_t is independent of large file support settings. Keep your
+ * build on the safe side avoiding an off_t gating. If you have a 64-bit
+ * off_t then take for sure that another 64-bit data type exists, dig deeper
+ * and you will find it.
+ *
+ */
+
+#if defined(__DJGPP__) || defined(__GO32__)
+#  if defined(__DJGPP__) && (__DJGPP__ > 1)
+#    define CURL_TYPEOF_CURL_OFF_T     long long
+#    define CURL_FORMAT_CURL_OFF_T     "lld"
+#    define CURL_FORMAT_CURL_OFF_TU    "llu"
+#    define CURL_SUFFIX_CURL_OFF_T     LL
+#    define CURL_SUFFIX_CURL_OFF_TU    ULL
+#  else
+#    define CURL_TYPEOF_CURL_OFF_T     long
+#    define CURL_FORMAT_CURL_OFF_T     "ld"
+#    define CURL_FORMAT_CURL_OFF_TU    "lu"
+#    define CURL_SUFFIX_CURL_OFF_T     L
+#    define CURL_SUFFIX_CURL_OFF_TU    UL
+#  endif
+#  define CURL_TYPEOF_CURL_SOCKLEN_T int
+
+#elif defined(__SALFORDC__)
+#  define CURL_TYPEOF_CURL_OFF_T     long
+#  define CURL_FORMAT_CURL_OFF_T     "ld"
+#  define CURL_FORMAT_CURL_OFF_TU    "lu"
+#  define CURL_SUFFIX_CURL_OFF_T     L
+#  define CURL_SUFFIX_CURL_OFF_TU    UL
+#  define CURL_TYPEOF_CURL_SOCKLEN_T int
+
+#elif defined(__BORLANDC__)
+#  if (__BORLANDC__ < 0x520)
+#    define CURL_TYPEOF_CURL_OFF_T     long
+#    define CURL_FORMAT_CURL_OFF_T     "ld"
+#    define CURL_FORMAT_CURL_OFF_TU    "lu"
+#    define CURL_SUFFIX_CURL_OFF_T     L
+#    define CURL_SUFFIX_CURL_OFF_TU    UL
+#  else
+#    define CURL_TYPEOF_CURL_OFF_T     __int64
+#    define CURL_FORMAT_CURL_OFF_T     "I64d"
+#    define CURL_FORMAT_CURL_OFF_TU    "I64u"
+#    define CURL_SUFFIX_CURL_OFF_T     i64
+#    define CURL_SUFFIX_CURL_OFF_TU    ui64
+#  endif
+#  define CURL_TYPEOF_CURL_SOCKLEN_T int
+
+#elif defined(__TURBOC__)
+#  define CURL_TYPEOF_CURL_OFF_T     long
+#  define CURL_FORMAT_CURL_OFF_T     "ld"
+#  define CURL_FORMAT_CURL_OFF_TU    "lu"
+#  define CURL_SUFFIX_CURL_OFF_T     L
+#  define CURL_SUFFIX_CURL_OFF_TU    UL
+#  define CURL_TYPEOF_CURL_SOCKLEN_T int
+
+#elif defined(__POCC__)
+#  if (__POCC__ < 280)
+#    define CURL_TYPEOF_CURL_OFF_T     long
+#    define CURL_FORMAT_CURL_OFF_T     "ld"
+#    define CURL_FORMAT_CURL_OFF_TU    "lu"
+#    define CURL_SUFFIX_CURL_OFF_T     L
+#    define CURL_SUFFIX_CURL_OFF_TU    UL
+#  elif defined(_MSC_VER)
+#    define CURL_TYPEOF_CURL_OFF_T     __int64
+#    define CURL_FORMAT_CURL_OFF_T     "I64d"
+#    define CURL_FORMAT_CURL_OFF_TU    "I64u"
+#    define CURL_SUFFIX_CURL_OFF_T     i64
+#    define CURL_SUFFIX_CURL_OFF_TU    ui64
+#  else
+#    define CURL_TYPEOF_CURL_OFF_T     long long
+#    define CURL_FORMAT_CURL_OFF_T     "lld"
+#    define CURL_FORMAT_CURL_OFF_TU    "llu"
+#    define CURL_SUFFIX_CURL_OFF_T     LL
+#    define CURL_SUFFIX_CURL_OFF_TU    ULL
+#  endif
+#  define CURL_TYPEOF_CURL_SOCKLEN_T int
+
+#elif defined(__LCC__)
+#  if defined(__MCST__) /* MCST eLbrus Compiler Collection */
+#    define CURL_TYPEOF_CURL_OFF_T     long
+#    define CURL_FORMAT_CURL_OFF_T     "ld"
+#    define CURL_FORMAT_CURL_OFF_TU    "lu"
+#    define CURL_SUFFIX_CURL_OFF_T     L
+#    define CURL_SUFFIX_CURL_OFF_TU    UL
+#    define CURL_TYPEOF_CURL_SOCKLEN_T socklen_t
+#    define CURL_PULL_SYS_TYPES_H      1
+#    define CURL_PULL_SYS_SOCKET_H     1
+#  else                /* Local (or Little) C Compiler */
+#    define CURL_TYPEOF_CURL_OFF_T     long
+#    define CURL_FORMAT_CURL_OFF_T     "ld"
+#    define CURL_FORMAT_CURL_OFF_TU    "lu"
+#    define CURL_SUFFIX_CURL_OFF_T     L
+#    define CURL_SUFFIX_CURL_OFF_TU    UL
+#    define CURL_TYPEOF_CURL_SOCKLEN_T int
+#  endif
+
+#elif defined(macintosh)
+#  include <ConditionalMacros.h>
+#  if TYPE_LONGLONG
+#    define CURL_TYPEOF_CURL_OFF_T     long long
+#    define CURL_FORMAT_CURL_OFF_T     "lld"
+#    define CURL_FORMAT_CURL_OFF_TU    "llu"
+#    define CURL_SUFFIX_CURL_OFF_T     LL
+#    define CURL_SUFFIX_CURL_OFF_TU    ULL
+#  else
+#    define CURL_TYPEOF_CURL_OFF_T     long
+#    define CURL_FORMAT_CURL_OFF_T     "ld"
+#    define CURL_FORMAT_CURL_OFF_TU    "lu"
+#    define CURL_SUFFIX_CURL_OFF_T     L
+#    define CURL_SUFFIX_CURL_OFF_TU    UL
+#  endif
+#  define CURL_TYPEOF_CURL_SOCKLEN_T unsigned int
+
+#elif defined(__TANDEM)
+# if ! defined(__LP64)
+   /* Required for 32-bit NonStop builds only. */
+#  define CURL_TYPEOF_CURL_OFF_T     long long
+#  define CURL_FORMAT_CURL_OFF_T     "lld"
+#  define CURL_FORMAT_CURL_OFF_TU    "llu"
+#  define CURL_SUFFIX_CURL_OFF_T     LL
+#  define CURL_SUFFIX_CURL_OFF_TU    ULL
+#  define CURL_TYPEOF_CURL_SOCKLEN_T int
+# endif
+
+#elif defined(_WIN32_WCE)
+#  define CURL_TYPEOF_CURL_OFF_T     __int64
+#  define CURL_FORMAT_CURL_OFF_T     "I64d"
+#  define CURL_FORMAT_CURL_OFF_TU    "I64u"
+#  define CURL_SUFFIX_CURL_OFF_T     i64
+#  define CURL_SUFFIX_CURL_OFF_TU    ui64
+#  define CURL_TYPEOF_CURL_SOCKLEN_T int
+
+#elif defined(__MINGW32__)
+#  include <inttypes.h>
+#  define CURL_TYPEOF_CURL_OFF_T     long long
+#  define CURL_FORMAT_CURL_OFF_T     PRId64
+#  define CURL_FORMAT_CURL_OFF_TU    PRIu64
+#  define CURL_SUFFIX_CURL_OFF_T     LL
+#  define CURL_SUFFIX_CURL_OFF_TU    ULL
+#  define CURL_TYPEOF_CURL_SOCKLEN_T int
+#  define CURL_PULL_SYS_TYPES_H      1
+
+#elif defined(__VMS)
+#  if defined(__VAX)
+#    define CURL_TYPEOF_CURL_OFF_T     long
+#    define CURL_FORMAT_CURL_OFF_T     "ld"
+#    define CURL_FORMAT_CURL_OFF_TU    "lu"
+#    define CURL_SUFFIX_CURL_OFF_T     L
+#    define CURL_SUFFIX_CURL_OFF_TU    UL
+#  else
+#    define CURL_TYPEOF_CURL_OFF_T     long long
+#    define CURL_FORMAT_CURL_OFF_T     "lld"
+#    define CURL_FORMAT_CURL_OFF_TU    "llu"
+#    define CURL_SUFFIX_CURL_OFF_T     LL
+#    define CURL_SUFFIX_CURL_OFF_TU    ULL
+#  endif
+#  define CURL_TYPEOF_CURL_SOCKLEN_T unsigned int
+
+#elif defined(__OS400__)
+#  define CURL_TYPEOF_CURL_OFF_T     long long
+#  define CURL_FORMAT_CURL_OFF_T     "lld"
+#  define CURL_FORMAT_CURL_OFF_TU    "llu"
+#  define CURL_SUFFIX_CURL_OFF_T     LL
+#  define CURL_SUFFIX_CURL_OFF_TU    ULL
+#  define CURL_TYPEOF_CURL_SOCKLEN_T socklen_t
+#  define CURL_PULL_SYS_TYPES_H      1
+#  define CURL_PULL_SYS_SOCKET_H     1
+
+#elif defined(__MVS__)
+#  if defined(_LONG_LONG)
+#    define CURL_TYPEOF_CURL_OFF_T     long long
+#    define CURL_FORMAT_CURL_OFF_T     "lld"
+#    define CURL_FORMAT_CURL_OFF_TU    "llu"
+#    define CURL_SUFFIX_CURL_OFF_T     LL
+#    define CURL_SUFFIX_CURL_OFF_TU    ULL
+#  elif defined(_LP64)
+#    define CURL_TYPEOF_CURL_OFF_T     long
+#    define CURL_FORMAT_CURL_OFF_T     "ld"
+#    define CURL_FORMAT_CURL_OFF_TU    "lu"
+#    define CURL_SUFFIX_CURL_OFF_T     L
+#    define CURL_SUFFIX_CURL_OFF_TU    UL
+#  else
+#    define CURL_TYPEOF_CURL_OFF_T     long
+#    define CURL_FORMAT_CURL_OFF_T     "ld"
+#    define CURL_FORMAT_CURL_OFF_TU    "lu"
+#    define CURL_SUFFIX_CURL_OFF_T     L
+#    define CURL_SUFFIX_CURL_OFF_TU    UL
+#  endif
+#  define CURL_TYPEOF_CURL_SOCKLEN_T socklen_t
+#  define CURL_PULL_SYS_TYPES_H      1
+#  define CURL_PULL_SYS_SOCKET_H     1
+
+#elif defined(__370__)
+#  if defined(__IBMC__) || defined(__IBMCPP__)
+#    if defined(_ILP32)
+#    elif defined(_LP64)
+#    endif
+#    if defined(_LONG_LONG)
+#      define CURL_TYPEOF_CURL_OFF_T     long long
+#      define CURL_FORMAT_CURL_OFF_T     "lld"
+#      define CURL_FORMAT_CURL_OFF_TU    "llu"
+#      define CURL_SUFFIX_CURL_OFF_T     LL
+#      define CURL_SUFFIX_CURL_OFF_TU    ULL
+#    elif defined(_LP64)
+#      define CURL_TYPEOF_CURL_OFF_T     long
+#      define CURL_FORMAT_CURL_OFF_T     "ld"
+#      define CURL_FORMAT_CURL_OFF_TU    "lu"
+#      define CURL_SUFFIX_CURL_OFF_T     L
+#      define CURL_SUFFIX_CURL_OFF_TU    UL
+#    else
+#      define CURL_TYPEOF_CURL_OFF_T     long
+#      define CURL_FORMAT_CURL_OFF_T     "ld"
+#      define CURL_FORMAT_CURL_OFF_TU    "lu"
+#      define CURL_SUFFIX_CURL_OFF_T     L
+#      define CURL_SUFFIX_CURL_OFF_TU    UL
+#    endif
+#    define CURL_TYPEOF_CURL_SOCKLEN_T socklen_t
+#    define CURL_PULL_SYS_TYPES_H      1
+#    define CURL_PULL_SYS_SOCKET_H     1
+#  endif
+
+#elif defined(TPF)
+#  define CURL_TYPEOF_CURL_OFF_T     long
+#  define CURL_FORMAT_CURL_OFF_T     "ld"
+#  define CURL_FORMAT_CURL_OFF_TU    "lu"
+#  define CURL_SUFFIX_CURL_OFF_T     L
+#  define CURL_SUFFIX_CURL_OFF_TU    UL
+#  define CURL_TYPEOF_CURL_SOCKLEN_T int
+
+#elif defined(__TINYC__) /* also known as tcc */
+#  define CURL_TYPEOF_CURL_OFF_T     long long
+#  define CURL_FORMAT_CURL_OFF_T     "lld"
+#  define CURL_FORMAT_CURL_OFF_TU    "llu"
+#  define CURL_SUFFIX_CURL_OFF_T     LL
+#  define CURL_SUFFIX_CURL_OFF_TU    ULL
+#  define CURL_TYPEOF_CURL_SOCKLEN_T socklen_t
+#  define CURL_PULL_SYS_TYPES_H      1
+#  define CURL_PULL_SYS_SOCKET_H     1
+
+#elif defined(__SUNPRO_C) || defined(__SUNPRO_CC) /* Oracle Solaris Studio */
+#  if !defined(__LP64) && (defined(__ILP32) ||                          \
+                           defined(__i386) ||                           \
+                           defined(__sparcv8) ||                        \
+                           defined(__sparcv8plus))
+#    define CURL_TYPEOF_CURL_OFF_T     long long
+#    define CURL_FORMAT_CURL_OFF_T     "lld"
+#    define CURL_FORMAT_CURL_OFF_TU    "llu"
+#    define CURL_SUFFIX_CURL_OFF_T     LL
+#    define CURL_SUFFIX_CURL_OFF_TU    ULL
+#  elif defined(__LP64) || \
+        defined(__amd64) || defined(__sparcv9)
+#    define CURL_TYPEOF_CURL_OFF_T     long
+#    define CURL_FORMAT_CURL_OFF_T     "ld"
+#    define CURL_FORMAT_CURL_OFF_TU    "lu"
+#    define CURL_SUFFIX_CURL_OFF_T     L
+#    define CURL_SUFFIX_CURL_OFF_TU    UL
+#  endif
+#  define CURL_TYPEOF_CURL_SOCKLEN_T socklen_t
+#  define CURL_PULL_SYS_TYPES_H      1
+#  define CURL_PULL_SYS_SOCKET_H     1
+
+#elif defined(__xlc__) /* IBM xlc compiler */
+#  if !defined(_LP64)
+#    define CURL_TYPEOF_CURL_OFF_T     long long
+#    define CURL_FORMAT_CURL_OFF_T     "lld"
+#    define CURL_FORMAT_CURL_OFF_TU    "llu"
+#    define CURL_SUFFIX_CURL_OFF_T     LL
+#    define CURL_SUFFIX_CURL_OFF_TU    ULL
+#  else
+#    define CURL_TYPEOF_CURL_OFF_T     long
+#    define CURL_FORMAT_CURL_OFF_T     "ld"
+#    define CURL_FORMAT_CURL_OFF_TU    "lu"
+#    define CURL_SUFFIX_CURL_OFF_T     L
+#    define CURL_SUFFIX_CURL_OFF_TU    UL
+#  endif
+#  define CURL_TYPEOF_CURL_SOCKLEN_T socklen_t
+#  define CURL_PULL_SYS_TYPES_H      1
+#  define CURL_PULL_SYS_SOCKET_H     1
+
+#elif defined(__hpux) /* HP aCC compiler */
+#  if !defined(_LP64)
+#    define CURL_TYPEOF_CURL_OFF_T     long long
+#    define CURL_FORMAT_CURL_OFF_T     "lld"
+#    define CURL_FORMAT_CURL_OFF_TU    "llu"
+#    define CURL_SUFFIX_CURL_OFF_T     LL
+#    define CURL_SUFFIX_CURL_OFF_TU    ULL
+#  else
+#    define CURL_TYPEOF_CURL_OFF_T     long
+#    define CURL_FORMAT_CURL_OFF_T     "ld"
+#    define CURL_FORMAT_CURL_OFF_TU    "lu"
+#    define CURL_SUFFIX_CURL_OFF_T     L
+#    define CURL_SUFFIX_CURL_OFF_TU    UL
+#  endif
+#  define CURL_TYPEOF_CURL_SOCKLEN_T socklen_t
+#  define CURL_PULL_SYS_TYPES_H      1
+#  define CURL_PULL_SYS_SOCKET_H     1
+
+/* ===================================== */
+/*    KEEP MSVC THE PENULTIMATE ENTRY    */
+/* ===================================== */
+
+#elif defined(_MSC_VER)
+#  if (_MSC_VER >= 1800)
+#    include <inttypes.h>
+#    define CURL_TYPEOF_CURL_OFF_T     __int64
+#    define CURL_FORMAT_CURL_OFF_T     PRId64
+#    define CURL_FORMAT_CURL_OFF_TU    PRIu64
+#    define CURL_SUFFIX_CURL_OFF_T     i64
+#    define CURL_SUFFIX_CURL_OFF_TU    ui64
+#  elif (_MSC_VER >= 900) && (_INTEGRAL_MAX_BITS >= 64)
+#    define CURL_TYPEOF_CURL_OFF_T     __int64
+#    define CURL_FORMAT_CURL_OFF_T     "I64d"
+#    define CURL_FORMAT_CURL_OFF_TU    "I64u"
+#    define CURL_SUFFIX_CURL_OFF_T     i64
+#    define CURL_SUFFIX_CURL_OFF_TU    ui64
+#  else
+#    define CURL_TYPEOF_CURL_OFF_T     long
+#    define CURL_FORMAT_CURL_OFF_T     "ld"
+#    define CURL_FORMAT_CURL_OFF_TU    "lu"
+#    define CURL_SUFFIX_CURL_OFF_T     L
+#    define CURL_SUFFIX_CURL_OFF_TU    UL
+#  endif
+#  define CURL_TYPEOF_CURL_SOCKLEN_T int
+
+/* ===================================== */
+/*    KEEP GENERIC GCC THE LAST ENTRY    */
+/* ===================================== */
+
+#elif defined(__GNUC__) && !defined(_SCO_DS)
+#  if !defined(__LP64__) &&                                             \
+  (defined(__ILP32__) || defined(__i386__) || defined(__hppa__) ||      \
+   defined(__ppc__) || defined(__powerpc__) || defined(__arm__) ||      \
+   defined(__sparc__) || defined(__mips__) || defined(__sh__) ||        \
+   defined(__XTENSA__) ||                                               \
+   (defined(__SIZEOF_LONG__) && __SIZEOF_LONG__ == 4)  ||               \
+   (defined(__LONG_MAX__) && __LONG_MAX__ == 2147483647L))
+#    define CURL_TYPEOF_CURL_OFF_T     long long
+#    define CURL_FORMAT_CURL_OFF_T     "lld"
+#    define CURL_FORMAT_CURL_OFF_TU    "llu"
+#    define CURL_SUFFIX_CURL_OFF_T     LL
+#    define CURL_SUFFIX_CURL_OFF_TU    ULL
+#  elif defined(__LP64__) || \
+        defined(__x86_64__) || defined(__ppc64__) || defined(__sparc64__) || \
+        defined(__e2k__) || \
+        (defined(__SIZEOF_LONG__) && __SIZEOF_LONG__ == 8) || \
+        (defined(__LONG_MAX__) && __LONG_MAX__ == 9223372036854775807L)
+#    define CURL_TYPEOF_CURL_OFF_T     long
+#    define CURL_FORMAT_CURL_OFF_T     "ld"
+#    define CURL_FORMAT_CURL_OFF_TU    "lu"
+#    define CURL_SUFFIX_CURL_OFF_T     L
+#    define CURL_SUFFIX_CURL_OFF_TU    UL
+#  endif
+#  define CURL_TYPEOF_CURL_SOCKLEN_T socklen_t
+#  define CURL_PULL_SYS_TYPES_H      1
+#  define CURL_PULL_SYS_SOCKET_H     1
+
+#else
+/* generic "safe guess" on old 32-bit style */
+# define CURL_TYPEOF_CURL_OFF_T     long
+# define CURL_FORMAT_CURL_OFF_T     "ld"
+# define CURL_FORMAT_CURL_OFF_TU    "lu"
+# define CURL_SUFFIX_CURL_OFF_T     L
+# define CURL_SUFFIX_CURL_OFF_TU    UL
+# define CURL_TYPEOF_CURL_SOCKLEN_T int
+#endif
+
+#ifdef _AIX
+/* AIX needs <sys/poll.h> */
+#define CURL_PULL_SYS_POLL_H
+#endif
+
+/* CURL_PULL_SYS_TYPES_H is defined above when inclusion of header file  */
+/* sys/types.h is required here to properly make type definitions below. */
+#ifdef CURL_PULL_SYS_TYPES_H
+#  include <sys/types.h>
+#endif
+
+/* CURL_PULL_SYS_SOCKET_H is defined above when inclusion of header file  */
+/* sys/socket.h is required here to properly make type definitions below. */
+#ifdef CURL_PULL_SYS_SOCKET_H
+#  include <sys/socket.h>
+#endif
+
+/* CURL_PULL_SYS_POLL_H is defined above when inclusion of header file    */
+/* sys/poll.h is required here to properly make type definitions below.   */
+#ifdef CURL_PULL_SYS_POLL_H
+#  include <sys/poll.h>
+#endif
+
+/* Data type definition of curl_socklen_t. */
+#ifdef CURL_TYPEOF_CURL_SOCKLEN_T
+  typedef CURL_TYPEOF_CURL_SOCKLEN_T curl_socklen_t;
+#endif
+
+/* Data type definition of curl_off_t. */
+
+#ifdef CURL_TYPEOF_CURL_OFF_T
+  typedef CURL_TYPEOF_CURL_OFF_T curl_off_t;
+#endif
+
+/*
+ * CURL_ISOCPP and CURL_OFF_T_C definitions are done here in order to allow
+ * these to be visible and exported by the external libcurl interface API,
+ * while also making them visible to the library internals, simply including
+ * curl_setup.h, without actually needing to include curl.h internally.
+ * If some day this section would grow big enough, all this should be moved
+ * to its own header file.
+ */
+
+/*
+ * Figure out if we can use the ## preprocessor operator, which is supported
+ * by ISO/ANSI C and C++. Some compilers support it without setting __STDC__
+ * or  __cplusplus so we need to carefully check for them too.
+ */
+
+#if defined(__STDC__) || defined(_MSC_VER) || defined(__cplusplus) || \
+  defined(__HP_aCC) || defined(__BORLANDC__) || defined(__LCC__) || \
+  defined(__POCC__) || defined(__SALFORDC__) || defined(__HIGHC__) || \
+  defined(__ILEC400__)
+  /* This compiler is believed to have an ISO compatible preprocessor */
+#define CURL_ISOCPP
+#else
+  /* This compiler is believed NOT to have an ISO compatible preprocessor */
+#undef CURL_ISOCPP
+#endif
+
+/*
+ * Macros for minimum-width signed and unsigned curl_off_t integer constants.
+ */
+
+#if defined(__BORLANDC__) && (__BORLANDC__ == 0x0551)
+#  define CURLINC_OFF_T_C_HLPR2(x) x
+#  define CURLINC_OFF_T_C_HLPR1(x) CURLINC_OFF_T_C_HLPR2(x)
+#  define CURL_OFF_T_C(Val)  CURLINC_OFF_T_C_HLPR1(Val) ## \
+                             CURLINC_OFF_T_C_HLPR1(CURL_SUFFIX_CURL_OFF_T)
+#  define CURL_OFF_TU_C(Val) CURLINC_OFF_T_C_HLPR1(Val) ## \
+                             CURLINC_OFF_T_C_HLPR1(CURL_SUFFIX_CURL_OFF_TU)
+#else
+#  ifdef CURL_ISOCPP
+#    define CURLINC_OFF_T_C_HLPR2(Val,Suffix) Val ## Suffix
+#  else
+#    define CURLINC_OFF_T_C_HLPR2(Val,Suffix) Val/**/Suffix
+#  endif
+#  define CURLINC_OFF_T_C_HLPR1(Val,Suffix) CURLINC_OFF_T_C_HLPR2(Val,Suffix)
+#  define CURL_OFF_T_C(Val)  CURLINC_OFF_T_C_HLPR1(Val,CURL_SUFFIX_CURL_OFF_T)
+#  define CURL_OFF_TU_C(Val) CURLINC_OFF_T_C_HLPR1(Val,CURL_SUFFIX_CURL_OFF_TU)
+#endif
+
+#endif /* CURLINC_SYSTEM_H */

3rdparty/curl/include/curl/typecheck-gcc.h

@@ -0,0 +1,718 @@
+#ifndef CURLINC_TYPECHECK_GCC_H
+#define CURLINC_TYPECHECK_GCC_H
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at https://curl.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ * SPDX-License-Identifier: curl
+ *
+ ***************************************************************************/
+
+/* wraps curl_easy_setopt() with typechecking */
+
+/* To add a new kind of warning, add an
+ *   if(curlcheck_sometype_option(_curl_opt))
+ *     if(!curlcheck_sometype(value))
+ *       _curl_easy_setopt_err_sometype();
+ * block and define curlcheck_sometype_option, curlcheck_sometype and
+ * _curl_easy_setopt_err_sometype below
+ *
+ * NOTE: We use two nested 'if' statements here instead of the && operator, in
+ *       order to work around gcc bug #32061. It affects only gcc 4.3.x/4.4.x
+ *       when compiling with -Wlogical-op.
+ *
+ * To add an option that uses the same type as an existing option, you will
+ * just need to extend the appropriate _curl_*_option macro
+ */
+#define curl_easy_setopt(handle, option, value)                         \
+  __extension__({                                                       \
+      CURLoption _curl_opt = (option);                                  \
+      if(__builtin_constant_p(_curl_opt)) {                             \
+        CURL_IGNORE_DEPRECATION(                                        \
+          if(curlcheck_long_option(_curl_opt))                          \
+            if(!curlcheck_long(value))                                  \
+              _curl_easy_setopt_err_long();                             \
+          if(curlcheck_off_t_option(_curl_opt))                         \
+            if(!curlcheck_off_t(value))                                 \
+              _curl_easy_setopt_err_curl_off_t();                       \
+          if(curlcheck_string_option(_curl_opt))                        \
+            if(!curlcheck_string(value))                                \
+              _curl_easy_setopt_err_string();                           \
+          if(curlcheck_write_cb_option(_curl_opt))                      \
+            if(!curlcheck_write_cb(value))                              \
+              _curl_easy_setopt_err_write_callback();                   \
+          if((_curl_opt) == CURLOPT_RESOLVER_START_FUNCTION)            \
+            if(!curlcheck_resolver_start_callback(value))               \
+              _curl_easy_setopt_err_resolver_start_callback();          \
+          if((_curl_opt) == CURLOPT_READFUNCTION)                       \
+            if(!curlcheck_read_cb(value))                               \
+              _curl_easy_setopt_err_read_cb();                          \
+          if((_curl_opt) == CURLOPT_IOCTLFUNCTION)                      \
+            if(!curlcheck_ioctl_cb(value))                              \
+              _curl_easy_setopt_err_ioctl_cb();                         \
+          if((_curl_opt) == CURLOPT_SOCKOPTFUNCTION)                    \
+            if(!curlcheck_sockopt_cb(value))                            \
+              _curl_easy_setopt_err_sockopt_cb();                       \
+          if((_curl_opt) == CURLOPT_OPENSOCKETFUNCTION)                 \
+            if(!curlcheck_opensocket_cb(value))                         \
+              _curl_easy_setopt_err_opensocket_cb();                    \
+          if((_curl_opt) == CURLOPT_PROGRESSFUNCTION)                   \
+            if(!curlcheck_progress_cb(value))                           \
+              _curl_easy_setopt_err_progress_cb();                      \
+          if((_curl_opt) == CURLOPT_DEBUGFUNCTION)                      \
+            if(!curlcheck_debug_cb(value))                              \
+              _curl_easy_setopt_err_debug_cb();                         \
+          if((_curl_opt) == CURLOPT_SSL_CTX_FUNCTION)                   \
+            if(!curlcheck_ssl_ctx_cb(value))                            \
+              _curl_easy_setopt_err_ssl_ctx_cb();                       \
+          if(curlcheck_conv_cb_option(_curl_opt))                       \
+            if(!curlcheck_conv_cb(value))                               \
+              _curl_easy_setopt_err_conv_cb();                          \
+          if((_curl_opt) == CURLOPT_SEEKFUNCTION)                       \
+            if(!curlcheck_seek_cb(value))                               \
+              _curl_easy_setopt_err_seek_cb();                          \
+          if(curlcheck_cb_data_option(_curl_opt))                       \
+            if(!curlcheck_cb_data(value))                               \
+              _curl_easy_setopt_err_cb_data();                          \
+          if((_curl_opt) == CURLOPT_ERRORBUFFER)                        \
+            if(!curlcheck_error_buffer(value))                          \
+              _curl_easy_setopt_err_error_buffer();                     \
+          if((_curl_opt) == CURLOPT_STDERR)                             \
+            if(!curlcheck_FILE(value))                                  \
+              _curl_easy_setopt_err_FILE();                             \
+          if(curlcheck_postfields_option(_curl_opt))                    \
+            if(!curlcheck_postfields(value))                            \
+              _curl_easy_setopt_err_postfields();                       \
+          if((_curl_opt) == CURLOPT_HTTPPOST)                           \
+            if(!curlcheck_arr((value), struct curl_httppost))           \
+              _curl_easy_setopt_err_curl_httpost();                     \
+          if((_curl_opt) == CURLOPT_MIMEPOST)                           \
+            if(!curlcheck_ptr((value), curl_mime))                      \
+              _curl_easy_setopt_err_curl_mimepost();                    \
+          if(curlcheck_slist_option(_curl_opt))                         \
+            if(!curlcheck_arr((value), struct curl_slist))              \
+              _curl_easy_setopt_err_curl_slist();                       \
+          if((_curl_opt) == CURLOPT_SHARE)                              \
+            if(!curlcheck_ptr((value), CURLSH))                         \
+              _curl_easy_setopt_err_CURLSH();                           \
+        )                                                               \
+      }                                                                 \
+      curl_easy_setopt(handle, _curl_opt, value);                       \
+    })
+
+/* wraps curl_easy_getinfo() with typechecking */
+#define curl_easy_getinfo(handle, info, arg)                            \
+  __extension__({                                                       \
+      CURLINFO _curl_info = (info);                                     \
+      if(__builtin_constant_p(_curl_info)) {                            \
+        CURL_IGNORE_DEPRECATION(                                        \
+          if(curlcheck_string_info(_curl_info))                         \
+            if(!curlcheck_arr((arg), char *))                           \
+              _curl_easy_getinfo_err_string();                          \
+          if(curlcheck_long_info(_curl_info))                           \
+            if(!curlcheck_arr((arg), long))                             \
+              _curl_easy_getinfo_err_long();                            \
+          if(curlcheck_double_info(_curl_info))                         \
+            if(!curlcheck_arr((arg), double))                           \
+              _curl_easy_getinfo_err_double();                          \
+          if(curlcheck_slist_info(_curl_info))                          \
+            if(!curlcheck_arr((arg), struct curl_slist *))              \
+              _curl_easy_getinfo_err_curl_slist();                      \
+          if(curlcheck_tlssessioninfo_info(_curl_info))                 \
+            if(!curlcheck_arr((arg), struct curl_tlssessioninfo *))     \
+              _curl_easy_getinfo_err_curl_tlssesssioninfo();            \
+          if(curlcheck_certinfo_info(_curl_info))                       \
+            if(!curlcheck_arr((arg), struct curl_certinfo *))           \
+              _curl_easy_getinfo_err_curl_certinfo();                   \
+          if(curlcheck_socket_info(_curl_info))                         \
+            if(!curlcheck_arr((arg), curl_socket_t))                    \
+              _curl_easy_getinfo_err_curl_socket();                     \
+          if(curlcheck_off_t_info(_curl_info))                          \
+            if(!curlcheck_arr((arg), curl_off_t))                       \
+              _curl_easy_getinfo_err_curl_off_t();                      \
+        )                                                               \
+      }                                                                 \
+      curl_easy_getinfo(handle, _curl_info, arg);                       \
+    })
+
+/*
+ * For now, just make sure that the functions are called with three arguments
+ */
+#define curl_share_setopt(share,opt,param) curl_share_setopt(share,opt,param)
+#define curl_multi_setopt(handle,opt,param) curl_multi_setopt(handle,opt,param)
+
+
+/* the actual warnings, triggered by calling the _curl_easy_setopt_err*
+ * functions */
+
+/* To define a new warning, use _CURL_WARNING(identifier, "message") */
+#define CURLWARNING(id, message)                                        \
+  static void __attribute__((__warning__(message)))                     \
+  __attribute__((__unused__)) __attribute__((__noinline__))             \
+  id(void) { __asm__(""); }
+
+CURLWARNING(_curl_easy_setopt_err_long,
+  "curl_easy_setopt expects a long argument for this option")
+CURLWARNING(_curl_easy_setopt_err_curl_off_t,
+  "curl_easy_setopt expects a curl_off_t argument for this option")
+CURLWARNING(_curl_easy_setopt_err_string,
+              "curl_easy_setopt expects a "
+              "string ('char *' or char[]) argument for this option"
+  )
+CURLWARNING(_curl_easy_setopt_err_write_callback,
+  "curl_easy_setopt expects a curl_write_callback argument for this option")
+CURLWARNING(_curl_easy_setopt_err_resolver_start_callback,
+              "curl_easy_setopt expects a "
+              "curl_resolver_start_callback argument for this option"
+  )
+CURLWARNING(_curl_easy_setopt_err_read_cb,
+  "curl_easy_setopt expects a curl_read_callback argument for this option")
+CURLWARNING(_curl_easy_setopt_err_ioctl_cb,
+  "curl_easy_setopt expects a curl_ioctl_callback argument for this option")
+CURLWARNING(_curl_easy_setopt_err_sockopt_cb,
+  "curl_easy_setopt expects a curl_sockopt_callback argument for this option")
+CURLWARNING(_curl_easy_setopt_err_opensocket_cb,
+              "curl_easy_setopt expects a "
+              "curl_opensocket_callback argument for this option"
+  )
+CURLWARNING(_curl_easy_setopt_err_progress_cb,
+  "curl_easy_setopt expects a curl_progress_callback argument for this option")
+CURLWARNING(_curl_easy_setopt_err_debug_cb,
+  "curl_easy_setopt expects a curl_debug_callback argument for this option")
+CURLWARNING(_curl_easy_setopt_err_ssl_ctx_cb,
+  "curl_easy_setopt expects a curl_ssl_ctx_callback argument for this option")
+CURLWARNING(_curl_easy_setopt_err_conv_cb,
+  "curl_easy_setopt expects a curl_conv_callback argument for this option")
+CURLWARNING(_curl_easy_setopt_err_seek_cb,
+  "curl_easy_setopt expects a curl_seek_callback argument for this option")
+CURLWARNING(_curl_easy_setopt_err_cb_data,
+              "curl_easy_setopt expects a "
+              "private data pointer as argument for this option")
+CURLWARNING(_curl_easy_setopt_err_error_buffer,
+              "curl_easy_setopt expects a "
+              "char buffer of CURL_ERROR_SIZE as argument for this option")
+CURLWARNING(_curl_easy_setopt_err_FILE,
+  "curl_easy_setopt expects a 'FILE *' argument for this option")
+CURLWARNING(_curl_easy_setopt_err_postfields,
+  "curl_easy_setopt expects a 'void *' or 'char *' argument for this option")
+CURLWARNING(_curl_easy_setopt_err_curl_httpost,
+              "curl_easy_setopt expects a 'struct curl_httppost *' "
+              "argument for this option")
+CURLWARNING(_curl_easy_setopt_err_curl_mimepost,
+              "curl_easy_setopt expects a 'curl_mime *' "
+              "argument for this option")
+CURLWARNING(_curl_easy_setopt_err_curl_slist,
+  "curl_easy_setopt expects a 'struct curl_slist *' argument for this option")
+CURLWARNING(_curl_easy_setopt_err_CURLSH,
+  "curl_easy_setopt expects a CURLSH* argument for this option")
+
+CURLWARNING(_curl_easy_getinfo_err_string,
+  "curl_easy_getinfo expects a pointer to 'char *' for this info")
+CURLWARNING(_curl_easy_getinfo_err_long,
+  "curl_easy_getinfo expects a pointer to long for this info")
+CURLWARNING(_curl_easy_getinfo_err_double,
+  "curl_easy_getinfo expects a pointer to double for this info")
+CURLWARNING(_curl_easy_getinfo_err_curl_slist,
+  "curl_easy_getinfo expects a pointer to 'struct curl_slist *' for this info")
+CURLWARNING(_curl_easy_getinfo_err_curl_tlssesssioninfo,
+              "curl_easy_getinfo expects a pointer to "
+              "'struct curl_tlssessioninfo *' for this info")
+CURLWARNING(_curl_easy_getinfo_err_curl_certinfo,
+              "curl_easy_getinfo expects a pointer to "
+              "'struct curl_certinfo *' for this info")
+CURLWARNING(_curl_easy_getinfo_err_curl_socket,
+  "curl_easy_getinfo expects a pointer to curl_socket_t for this info")
+CURLWARNING(_curl_easy_getinfo_err_curl_off_t,
+  "curl_easy_getinfo expects a pointer to curl_off_t for this info")
+
+/* groups of curl_easy_setops options that take the same type of argument */
+
+/* To add a new option to one of the groups, just add
+ *   (option) == CURLOPT_SOMETHING
+ * to the or-expression. If the option takes a long or curl_off_t, you do not
+ * have to do anything
+ */
+
+/* evaluates to true if option takes a long argument */
+#define curlcheck_long_option(option)                   \
+  (0 < (option) && (option) < CURLOPTTYPE_OBJECTPOINT)
+
+#define curlcheck_off_t_option(option)          \
+  (((option) > CURLOPTTYPE_OFF_T) && ((option) < CURLOPTTYPE_BLOB))
+
+/* evaluates to true if option takes a char* argument */
+#define curlcheck_string_option(option)                                       \
+  ((option) == CURLOPT_ABSTRACT_UNIX_SOCKET ||                                \
+   (option) == CURLOPT_ACCEPT_ENCODING ||                                     \
+   (option) == CURLOPT_ALTSVC ||                                              \
+   (option) == CURLOPT_CAINFO ||                                              \
+   (option) == CURLOPT_CAPATH ||                                              \
+   (option) == CURLOPT_COOKIE ||                                              \
+   (option) == CURLOPT_COOKIEFILE ||                                          \
+   (option) == CURLOPT_COOKIEJAR ||                                           \
+   (option) == CURLOPT_COOKIELIST ||                                          \
+   (option) == CURLOPT_CRLFILE ||                                             \
+   (option) == CURLOPT_CUSTOMREQUEST ||                                       \
+   (option) == CURLOPT_DEFAULT_PROTOCOL ||                                    \
+   (option) == CURLOPT_DNS_INTERFACE ||                                       \
+   (option) == CURLOPT_DNS_LOCAL_IP4 ||                                       \
+   (option) == CURLOPT_DNS_LOCAL_IP6 ||                                       \
+   (option) == CURLOPT_DNS_SERVERS ||                                         \
+   (option) == CURLOPT_DOH_URL ||                                             \
+   (option) == CURLOPT_ECH        ||                                          \
+   (option) == CURLOPT_EGDSOCKET ||                                           \
+   (option) == CURLOPT_FTP_ACCOUNT ||                                         \
+   (option) == CURLOPT_FTP_ALTERNATIVE_TO_USER ||                             \
+   (option) == CURLOPT_FTPPORT ||                                             \
+   (option) == CURLOPT_HSTS ||                                                \
+   (option) == CURLOPT_HAPROXY_CLIENT_IP ||                                   \
+   (option) == CURLOPT_INTERFACE ||                                           \
+   (option) == CURLOPT_ISSUERCERT ||                                          \
+   (option) == CURLOPT_KEYPASSWD ||                                           \
+   (option) == CURLOPT_KRBLEVEL ||                                            \
+   (option) == CURLOPT_LOGIN_OPTIONS ||                                       \
+   (option) == CURLOPT_MAIL_AUTH ||                                           \
+   (option) == CURLOPT_MAIL_FROM ||                                           \
+   (option) == CURLOPT_NETRC_FILE ||                                          \
+   (option) == CURLOPT_NOPROXY ||                                             \
+   (option) == CURLOPT_PASSWORD ||                                            \
+   (option) == CURLOPT_PINNEDPUBLICKEY ||                                     \
+   (option) == CURLOPT_PRE_PROXY ||                                           \
+   (option) == CURLOPT_PROTOCOLS_STR ||                                       \
+   (option) == CURLOPT_PROXY ||                                               \
+   (option) == CURLOPT_PROXY_CAINFO ||                                        \
+   (option) == CURLOPT_PROXY_CAPATH ||                                        \
+   (option) == CURLOPT_PROXY_CRLFILE ||                                       \
+   (option) == CURLOPT_PROXY_ISSUERCERT ||                                    \
+   (option) == CURLOPT_PROXY_KEYPASSWD ||                                     \
+   (option) == CURLOPT_PROXY_PINNEDPUBLICKEY ||                               \
+   (option) == CURLOPT_PROXY_SERVICE_NAME ||                                  \
+   (option) == CURLOPT_PROXY_SSL_CIPHER_LIST ||                               \
+   (option) == CURLOPT_PROXY_SSLCERT ||                                       \
+   (option) == CURLOPT_PROXY_SSLCERTTYPE ||                                   \
+   (option) == CURLOPT_PROXY_SSLKEY ||                                        \
+   (option) == CURLOPT_PROXY_SSLKEYTYPE ||                                    \
+   (option) == CURLOPT_PROXY_TLS13_CIPHERS ||                                 \
+   (option) == CURLOPT_PROXY_TLSAUTH_PASSWORD ||                              \
+   (option) == CURLOPT_PROXY_TLSAUTH_TYPE ||                                  \
+   (option) == CURLOPT_PROXY_TLSAUTH_USERNAME ||                              \
+   (option) == CURLOPT_PROXYPASSWORD ||                                       \
+   (option) == CURLOPT_PROXYUSERNAME ||                                       \
+   (option) == CURLOPT_PROXYUSERPWD ||                                        \
+   (option) == CURLOPT_RANDOM_FILE ||                                         \
+   (option) == CURLOPT_RANGE ||                                               \
+   (option) == CURLOPT_REDIR_PROTOCOLS_STR ||                                 \
+   (option) == CURLOPT_REFERER ||                                             \
+   (option) == CURLOPT_REQUEST_TARGET ||                                      \
+   (option) == CURLOPT_RTSP_SESSION_ID ||                                     \
+   (option) == CURLOPT_RTSP_STREAM_URI ||                                     \
+   (option) == CURLOPT_RTSP_TRANSPORT ||                                      \
+   (option) == CURLOPT_SASL_AUTHZID ||                                        \
+   (option) == CURLOPT_SERVICE_NAME ||                                        \
+   (option) == CURLOPT_SOCKS5_GSSAPI_SERVICE ||                               \
+   (option) == CURLOPT_SSH_HOST_PUBLIC_KEY_MD5 ||                             \
+   (option) == CURLOPT_SSH_HOST_PUBLIC_KEY_SHA256 ||                          \
+   (option) == CURLOPT_SSH_KNOWNHOSTS ||                                      \
+   (option) == CURLOPT_SSH_PRIVATE_KEYFILE ||                                 \
+   (option) == CURLOPT_SSH_PUBLIC_KEYFILE ||                                  \
+   (option) == CURLOPT_SSLCERT ||                                             \
+   (option) == CURLOPT_SSLCERTTYPE ||                                         \
+   (option) == CURLOPT_SSLENGINE ||                                           \
+   (option) == CURLOPT_SSLKEY ||                                              \
+   (option) == CURLOPT_SSLKEYTYPE ||                                          \
+   (option) == CURLOPT_SSL_CIPHER_LIST ||                                     \
+   (option) == CURLOPT_TLS13_CIPHERS ||                                       \
+   (option) == CURLOPT_TLSAUTH_PASSWORD ||                                    \
+   (option) == CURLOPT_TLSAUTH_TYPE ||                                        \
+   (option) == CURLOPT_TLSAUTH_USERNAME ||                                    \
+   (option) == CURLOPT_UNIX_SOCKET_PATH ||                                    \
+   (option) == CURLOPT_URL ||                                                 \
+   (option) == CURLOPT_USERAGENT ||                                           \
+   (option) == CURLOPT_USERNAME ||                                            \
+   (option) == CURLOPT_AWS_SIGV4 ||                                           \
+   (option) == CURLOPT_USERPWD ||                                             \
+   (option) == CURLOPT_XOAUTH2_BEARER ||                                      \
+   (option) == CURLOPT_SSL_EC_CURVES ||                                       \
+   0)
+
+/* evaluates to true if option takes a curl_write_callback argument */
+#define curlcheck_write_cb_option(option)                               \
+  ((option) == CURLOPT_HEADERFUNCTION ||                                \
+   (option) == CURLOPT_WRITEFUNCTION)
+
+/* evaluates to true if option takes a curl_conv_callback argument */
+#define curlcheck_conv_cb_option(option)                                \
+  ((option) == CURLOPT_CONV_TO_NETWORK_FUNCTION ||                      \
+   (option) == CURLOPT_CONV_FROM_NETWORK_FUNCTION ||                    \
+   (option) == CURLOPT_CONV_FROM_UTF8_FUNCTION)
+
+/* evaluates to true if option takes a data argument to pass to a callback */
+#define curlcheck_cb_data_option(option)                                      \
+  ((option) == CURLOPT_CHUNK_DATA ||                                          \
+   (option) == CURLOPT_CLOSESOCKETDATA ||                                     \
+   (option) == CURLOPT_DEBUGDATA ||                                           \
+   (option) == CURLOPT_FNMATCH_DATA ||                                        \
+   (option) == CURLOPT_HEADERDATA ||                                          \
+   (option) == CURLOPT_HSTSREADDATA ||                                        \
+   (option) == CURLOPT_HSTSWRITEDATA ||                                       \
+   (option) == CURLOPT_INTERLEAVEDATA ||                                      \
+   (option) == CURLOPT_IOCTLDATA ||                                           \
+   (option) == CURLOPT_OPENSOCKETDATA ||                                      \
+   (option) == CURLOPT_PREREQDATA ||                                          \
+   (option) == CURLOPT_PROGRESSDATA ||                                        \
+   (option) == CURLOPT_READDATA ||                                            \
+   (option) == CURLOPT_SEEKDATA ||                                            \
+   (option) == CURLOPT_SOCKOPTDATA ||                                         \
+   (option) == CURLOPT_SSH_KEYDATA ||                                         \
+   (option) == CURLOPT_SSL_CTX_DATA ||                                        \
+   (option) == CURLOPT_WRITEDATA ||                                           \
+   (option) == CURLOPT_RESOLVER_START_DATA ||                                 \
+   (option) == CURLOPT_TRAILERDATA ||                                         \
+   (option) == CURLOPT_SSH_HOSTKEYDATA ||                                     \
+   0)
+
+/* evaluates to true if option takes a POST data argument (void* or char*) */
+#define curlcheck_postfields_option(option)                                   \
+  ((option) == CURLOPT_POSTFIELDS ||                                          \
+   (option) == CURLOPT_COPYPOSTFIELDS ||                                      \
+   0)
+
+/* evaluates to true if option takes a struct curl_slist * argument */
+#define curlcheck_slist_option(option)                                        \
+  ((option) == CURLOPT_HTTP200ALIASES ||                                      \
+   (option) == CURLOPT_HTTPHEADER ||                                          \
+   (option) == CURLOPT_MAIL_RCPT ||                                           \
+   (option) == CURLOPT_POSTQUOTE ||                                           \
+   (option) == CURLOPT_PREQUOTE ||                                            \
+   (option) == CURLOPT_PROXYHEADER ||                                         \
+   (option) == CURLOPT_QUOTE ||                                               \
+   (option) == CURLOPT_RESOLVE ||                                             \
+   (option) == CURLOPT_TELNETOPTIONS ||                                       \
+   (option) == CURLOPT_CONNECT_TO ||                                          \
+   0)
+
+/* groups of curl_easy_getinfo infos that take the same type of argument */
+
+/* evaluates to true if info expects a pointer to char * argument */
+#define curlcheck_string_info(info)                             \
+  (CURLINFO_STRING < (info) && (info) < CURLINFO_LONG &&        \
+   (info) != CURLINFO_PRIVATE)
+
+/* evaluates to true if info expects a pointer to long argument */
+#define curlcheck_long_info(info)                       \
+  (CURLINFO_LONG < (info) && (info) < CURLINFO_DOUBLE)
+
+/* evaluates to true if info expects a pointer to double argument */
+#define curlcheck_double_info(info)                     \
+  (CURLINFO_DOUBLE < (info) && (info) < CURLINFO_SLIST)
+
+/* true if info expects a pointer to struct curl_slist * argument */
+#define curlcheck_slist_info(info)                                      \
+  (((info) == CURLINFO_SSL_ENGINES) || ((info) == CURLINFO_COOKIELIST))
+
+/* true if info expects a pointer to struct curl_tlssessioninfo * argument */
+#define curlcheck_tlssessioninfo_info(info)                              \
+  (((info) == CURLINFO_TLS_SSL_PTR) || ((info) == CURLINFO_TLS_SESSION))
+
+/* true if info expects a pointer to struct curl_certinfo * argument */
+#define curlcheck_certinfo_info(info) ((info) == CURLINFO_CERTINFO)
+
+/* true if info expects a pointer to struct curl_socket_t argument */
+#define curlcheck_socket_info(info)                     \
+  (CURLINFO_SOCKET < (info) && (info) < CURLINFO_OFF_T)
+
+/* true if info expects a pointer to curl_off_t argument */
+#define curlcheck_off_t_info(info)              \
+  (CURLINFO_OFF_T < (info))
+
+
+/* typecheck helpers -- check whether given expression has requested type */
+
+/* For pointers, you can use the curlcheck_ptr/curlcheck_arr macros,
+ * otherwise define a new macro. Search for __builtin_types_compatible_p
+ * in the GCC manual.
+ * NOTE: these macros MUST NOT EVALUATE their arguments! The argument is
+ * the actual expression passed to the curl_easy_setopt macro. This
+ * means that you can only apply the sizeof and __typeof__ operators, no
+ * == or whatsoever.
+ */
+
+/* XXX: should evaluate to true if expr is a pointer */
+#define curlcheck_any_ptr(expr)                 \
+  (sizeof(expr) == sizeof(void *))
+
+/* evaluates to true if expr is NULL */
+/* XXX: must not evaluate expr, so this check is not accurate */
+#define curlcheck_NULL(expr)                                            \
+  (__builtin_types_compatible_p(__typeof__(expr), __typeof__(NULL)))
+
+/* evaluates to true if expr is type*, const type* or NULL */
+#define curlcheck_ptr(expr, type)                                       \
+  (curlcheck_NULL(expr) ||                                              \
+   __builtin_types_compatible_p(__typeof__(expr), type *) ||            \
+   __builtin_types_compatible_p(__typeof__(expr), const type *))
+
+/* evaluates to true if expr is one of type[], type*, NULL or const type* */
+#define curlcheck_arr(expr, type)                                       \
+  (curlcheck_ptr((expr), type) ||                                       \
+   __builtin_types_compatible_p(__typeof__(expr), type []))
+
+/* evaluates to true if expr is a string */
+#define curlcheck_string(expr)                                          \
+  (curlcheck_arr((expr), char) ||                                       \
+   curlcheck_arr((expr), signed char) ||                                \
+   curlcheck_arr((expr), unsigned char))
+
+/* evaluates to true if expr is a long (no matter the signedness)
+ * XXX: for now, int is also accepted (and therefore short and char, which
+ * are promoted to int when passed to a variadic function) */
+#define curlcheck_long(expr)                                                  \
+  (__builtin_types_compatible_p(__typeof__(expr), long) ||                    \
+   __builtin_types_compatible_p(__typeof__(expr), signed long) ||             \
+   __builtin_types_compatible_p(__typeof__(expr), unsigned long) ||           \
+   __builtin_types_compatible_p(__typeof__(expr), int) ||                     \
+   __builtin_types_compatible_p(__typeof__(expr), signed int) ||              \
+   __builtin_types_compatible_p(__typeof__(expr), unsigned int) ||            \
+   __builtin_types_compatible_p(__typeof__(expr), short) ||                   \
+   __builtin_types_compatible_p(__typeof__(expr), signed short) ||            \
+   __builtin_types_compatible_p(__typeof__(expr), unsigned short) ||          \
+   __builtin_types_compatible_p(__typeof__(expr), char) ||                    \
+   __builtin_types_compatible_p(__typeof__(expr), signed char) ||             \
+   __builtin_types_compatible_p(__typeof__(expr), unsigned char))
+
+/* evaluates to true if expr is of type curl_off_t */
+#define curlcheck_off_t(expr)                                   \
+  (__builtin_types_compatible_p(__typeof__(expr), curl_off_t))
+
+/* evaluates to true if expr is abuffer suitable for CURLOPT_ERRORBUFFER */
+/* XXX: also check size of an char[] array? */
+#define curlcheck_error_buffer(expr)                                    \
+  (curlcheck_NULL(expr) ||                                              \
+   __builtin_types_compatible_p(__typeof__(expr), char *) ||            \
+   __builtin_types_compatible_p(__typeof__(expr), char[]))
+
+/* evaluates to true if expr is of type (const) void* or (const) FILE* */
+#if 0
+#define curlcheck_cb_data(expr)                                         \
+  (curlcheck_ptr((expr), void) ||                                       \
+   curlcheck_ptr((expr), FILE))
+#else /* be less strict */
+#define curlcheck_cb_data(expr)                 \
+  curlcheck_any_ptr(expr)
+#endif
+
+/* evaluates to true if expr is of type FILE* */
+#define curlcheck_FILE(expr)                                            \
+  (curlcheck_NULL(expr) ||                                              \
+   (__builtin_types_compatible_p(__typeof__(expr), FILE *)))
+
+/* evaluates to true if expr can be passed as POST data (void* or char*) */
+#define curlcheck_postfields(expr)                                      \
+  (curlcheck_ptr((expr), void) ||                                       \
+   curlcheck_arr((expr), char) ||                                       \
+   curlcheck_arr((expr), unsigned char))
+
+/* helper: __builtin_types_compatible_p distinguishes between functions and
+ * function pointers, hide it */
+#define curlcheck_cb_compatible(func, type)                             \
+  (__builtin_types_compatible_p(__typeof__(func), type) ||              \
+   __builtin_types_compatible_p(__typeof__(func) *, type))
+
+/* evaluates to true if expr is of type curl_resolver_start_callback */
+#define curlcheck_resolver_start_callback(expr)       \
+  (curlcheck_NULL(expr) || \
+   curlcheck_cb_compatible((expr), curl_resolver_start_callback))
+
+/* evaluates to true if expr is of type curl_read_callback or "similar" */
+#define curlcheck_read_cb(expr)                                         \
+  (curlcheck_NULL(expr) ||                                              \
+   curlcheck_cb_compatible((expr), __typeof__(fread) *) ||              \
+   curlcheck_cb_compatible((expr), curl_read_callback) ||               \
+   curlcheck_cb_compatible((expr), _curl_read_callback1) ||             \
+   curlcheck_cb_compatible((expr), _curl_read_callback2) ||             \
+   curlcheck_cb_compatible((expr), _curl_read_callback3) ||             \
+   curlcheck_cb_compatible((expr), _curl_read_callback4) ||             \
+   curlcheck_cb_compatible((expr), _curl_read_callback5) ||             \
+   curlcheck_cb_compatible((expr), _curl_read_callback6))
+typedef size_t (*_curl_read_callback1)(char *, size_t, size_t, void *);
+typedef size_t (*_curl_read_callback2)(char *, size_t, size_t, const void *);
+typedef size_t (*_curl_read_callback3)(char *, size_t, size_t, FILE *);
+typedef size_t (*_curl_read_callback4)(void *, size_t, size_t, void *);
+typedef size_t (*_curl_read_callback5)(void *, size_t, size_t, const void *);
+typedef size_t (*_curl_read_callback6)(void *, size_t, size_t, FILE *);
+
+/* evaluates to true if expr is of type curl_write_callback or "similar" */
+#define curlcheck_write_cb(expr)                                        \
+  (curlcheck_read_cb(expr) ||                                           \
+   curlcheck_cb_compatible((expr), __typeof__(fwrite) *) ||             \
+   curlcheck_cb_compatible((expr), curl_write_callback) ||              \
+   curlcheck_cb_compatible((expr), _curl_write_callback1) ||            \
+   curlcheck_cb_compatible((expr), _curl_write_callback2) ||            \
+   curlcheck_cb_compatible((expr), _curl_write_callback3) ||            \
+   curlcheck_cb_compatible((expr), _curl_write_callback4) ||            \
+   curlcheck_cb_compatible((expr), _curl_write_callback5) ||            \
+   curlcheck_cb_compatible((expr), _curl_write_callback6))
+typedef size_t (*_curl_write_callback1)(const char *, size_t, size_t, void *);
+typedef size_t (*_curl_write_callback2)(const char *, size_t, size_t,
+                                       const void *);
+typedef size_t (*_curl_write_callback3)(const char *, size_t, size_t, FILE *);
+typedef size_t (*_curl_write_callback4)(const void *, size_t, size_t, void *);
+typedef size_t (*_curl_write_callback5)(const void *, size_t, size_t,
+                                       const void *);
+typedef size_t (*_curl_write_callback6)(const void *, size_t, size_t, FILE *);
+
+/* evaluates to true if expr is of type curl_ioctl_callback or "similar" */
+#define curlcheck_ioctl_cb(expr)                                        \
+  (curlcheck_NULL(expr) ||                                              \
+   curlcheck_cb_compatible((expr), curl_ioctl_callback) ||              \
+   curlcheck_cb_compatible((expr), _curl_ioctl_callback1) ||            \
+   curlcheck_cb_compatible((expr), _curl_ioctl_callback2) ||            \
+   curlcheck_cb_compatible((expr), _curl_ioctl_callback3) ||            \
+   curlcheck_cb_compatible((expr), _curl_ioctl_callback4))
+typedef curlioerr (*_curl_ioctl_callback1)(CURL *, int, void *);
+typedef curlioerr (*_curl_ioctl_callback2)(CURL *, int, const void *);
+typedef curlioerr (*_curl_ioctl_callback3)(CURL *, curliocmd, void *);
+typedef curlioerr (*_curl_ioctl_callback4)(CURL *, curliocmd, const void *);
+
+/* evaluates to true if expr is of type curl_sockopt_callback or "similar" */
+#define curlcheck_sockopt_cb(expr)                                      \
+  (curlcheck_NULL(expr) ||                                              \
+   curlcheck_cb_compatible((expr), curl_sockopt_callback) ||            \
+   curlcheck_cb_compatible((expr), _curl_sockopt_callback1) ||          \
+   curlcheck_cb_compatible((expr), _curl_sockopt_callback2))
+typedef int (*_curl_sockopt_callback1)(void *, curl_socket_t, curlsocktype);
+typedef int (*_curl_sockopt_callback2)(const void *, curl_socket_t,
+                                      curlsocktype);
+
+/* evaluates to true if expr is of type curl_opensocket_callback or
+   "similar" */
+#define curlcheck_opensocket_cb(expr)                                   \
+  (curlcheck_NULL(expr) ||                                              \
+   curlcheck_cb_compatible((expr), curl_opensocket_callback) ||         \
+   curlcheck_cb_compatible((expr), _curl_opensocket_callback1) ||       \
+   curlcheck_cb_compatible((expr), _curl_opensocket_callback2) ||       \
+   curlcheck_cb_compatible((expr), _curl_opensocket_callback3) ||       \
+   curlcheck_cb_compatible((expr), _curl_opensocket_callback4))
+typedef curl_socket_t (*_curl_opensocket_callback1)
+  (void *, curlsocktype, struct curl_sockaddr *);
+typedef curl_socket_t (*_curl_opensocket_callback2)
+  (void *, curlsocktype, const struct curl_sockaddr *);
+typedef curl_socket_t (*_curl_opensocket_callback3)
+  (const void *, curlsocktype, struct curl_sockaddr *);
+typedef curl_socket_t (*_curl_opensocket_callback4)
+  (const void *, curlsocktype, const struct curl_sockaddr *);
+
+/* evaluates to true if expr is of type curl_progress_callback or "similar" */
+#define curlcheck_progress_cb(expr)                                     \
+  (curlcheck_NULL(expr) ||                                              \
+   curlcheck_cb_compatible((expr), curl_progress_callback) ||           \
+   curlcheck_cb_compatible((expr), _curl_progress_callback1) ||         \
+   curlcheck_cb_compatible((expr), _curl_progress_callback2))
+typedef int (*_curl_progress_callback1)(void *,
+    double, double, double, double);
+typedef int (*_curl_progress_callback2)(const void *,
+    double, double, double, double);
+
+/* evaluates to true if expr is of type curl_debug_callback or "similar" */
+#define curlcheck_debug_cb(expr)                                        \
+  (curlcheck_NULL(expr) ||                                              \
+   curlcheck_cb_compatible((expr), curl_debug_callback) ||              \
+   curlcheck_cb_compatible((expr), _curl_debug_callback1) ||            \
+   curlcheck_cb_compatible((expr), _curl_debug_callback2) ||            \
+   curlcheck_cb_compatible((expr), _curl_debug_callback3) ||            \
+   curlcheck_cb_compatible((expr), _curl_debug_callback4) ||            \
+   curlcheck_cb_compatible((expr), _curl_debug_callback5) ||            \
+   curlcheck_cb_compatible((expr), _curl_debug_callback6) ||            \
+   curlcheck_cb_compatible((expr), _curl_debug_callback7) ||            \
+   curlcheck_cb_compatible((expr), _curl_debug_callback8))
+typedef int (*_curl_debug_callback1) (CURL *,
+    curl_infotype, char *, size_t, void *);
+typedef int (*_curl_debug_callback2) (CURL *,
+    curl_infotype, char *, size_t, const void *);
+typedef int (*_curl_debug_callback3) (CURL *,
+    curl_infotype, const char *, size_t, void *);
+typedef int (*_curl_debug_callback4) (CURL *,
+    curl_infotype, const char *, size_t, const void *);
+typedef int (*_curl_debug_callback5) (CURL *,
+    curl_infotype, unsigned char *, size_t, void *);
+typedef int (*_curl_debug_callback6) (CURL *,
+    curl_infotype, unsigned char *, size_t, const void *);
+typedef int (*_curl_debug_callback7) (CURL *,
+    curl_infotype, const unsigned char *, size_t, void *);
+typedef int (*_curl_debug_callback8) (CURL *,
+    curl_infotype, const unsigned char *, size_t, const void *);
+
+/* evaluates to true if expr is of type curl_ssl_ctx_callback or "similar" */
+/* this is getting even messier... */
+#define curlcheck_ssl_ctx_cb(expr)                                      \
+  (curlcheck_NULL(expr) ||                                              \
+   curlcheck_cb_compatible((expr), curl_ssl_ctx_callback) ||            \
+   curlcheck_cb_compatible((expr), _curl_ssl_ctx_callback1) ||          \
+   curlcheck_cb_compatible((expr), _curl_ssl_ctx_callback2) ||          \
+   curlcheck_cb_compatible((expr), _curl_ssl_ctx_callback3) ||          \
+   curlcheck_cb_compatible((expr), _curl_ssl_ctx_callback4) ||          \
+   curlcheck_cb_compatible((expr), _curl_ssl_ctx_callback5) ||          \
+   curlcheck_cb_compatible((expr), _curl_ssl_ctx_callback6) ||          \
+   curlcheck_cb_compatible((expr), _curl_ssl_ctx_callback7) ||          \
+   curlcheck_cb_compatible((expr), _curl_ssl_ctx_callback8))
+typedef CURLcode (*_curl_ssl_ctx_callback1)(CURL *, void *, void *);
+typedef CURLcode (*_curl_ssl_ctx_callback2)(CURL *, void *, const void *);
+typedef CURLcode (*_curl_ssl_ctx_callback3)(CURL *, const void *, void *);
+typedef CURLcode (*_curl_ssl_ctx_callback4)(CURL *, const void *,
+                                            const void *);
+#ifdef HEADER_SSL_H
+/* hack: if we included OpenSSL's ssl.h, we know about SSL_CTX
+ * this will of course break if we are included before OpenSSL headers...
+ */
+typedef CURLcode (*_curl_ssl_ctx_callback5)(CURL *, SSL_CTX *, void *);
+typedef CURLcode (*_curl_ssl_ctx_callback6)(CURL *, SSL_CTX *, const void *);
+typedef CURLcode (*_curl_ssl_ctx_callback7)(CURL *, const SSL_CTX *, void *);
+typedef CURLcode (*_curl_ssl_ctx_callback8)(CURL *, const SSL_CTX *,
+                                            const void *);
+#else
+typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback5;
+typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback6;
+typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback7;
+typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback8;
+#endif
+
+/* evaluates to true if expr is of type curl_conv_callback or "similar" */
+#define curlcheck_conv_cb(expr)                                         \
+  (curlcheck_NULL(expr) ||                                              \
+   curlcheck_cb_compatible((expr), curl_conv_callback) ||               \
+   curlcheck_cb_compatible((expr), _curl_conv_callback1) ||             \
+   curlcheck_cb_compatible((expr), _curl_conv_callback2) ||             \
+   curlcheck_cb_compatible((expr), _curl_conv_callback3) ||             \
+   curlcheck_cb_compatible((expr), _curl_conv_callback4))
+typedef CURLcode (*_curl_conv_callback1)(char *, size_t length);
+typedef CURLcode (*_curl_conv_callback2)(const char *, size_t length);
+typedef CURLcode (*_curl_conv_callback3)(void *, size_t length);
+typedef CURLcode (*_curl_conv_callback4)(const void *, size_t length);
+
+/* evaluates to true if expr is of type curl_seek_callback or "similar" */
+#define curlcheck_seek_cb(expr)                                         \
+  (curlcheck_NULL(expr) ||                                              \
+   curlcheck_cb_compatible((expr), curl_seek_callback) ||               \
+   curlcheck_cb_compatible((expr), _curl_seek_callback1) ||             \
+   curlcheck_cb_compatible((expr), _curl_seek_callback2))
+typedef CURLcode (*_curl_seek_callback1)(void *, curl_off_t, int);
+typedef CURLcode (*_curl_seek_callback2)(const void *, curl_off_t, int);
+
+
+#endif /* CURLINC_TYPECHECK_GCC_H */

3rdparty/curl/include/curl/urlapi.h

@@ -0,0 +1,155 @@
+#ifndef CURLINC_URLAPI_H
+#define CURLINC_URLAPI_H
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at https://curl.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ * SPDX-License-Identifier: curl
+ *
+ ***************************************************************************/
+
+#include "curl.h"
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+/* the error codes for the URL API */
+typedef enum {
+  CURLUE_OK,
+  CURLUE_BAD_HANDLE,          /* 1 */
+  CURLUE_BAD_PARTPOINTER,     /* 2 */
+  CURLUE_MALFORMED_INPUT,     /* 3 */
+  CURLUE_BAD_PORT_NUMBER,     /* 4 */
+  CURLUE_UNSUPPORTED_SCHEME,  /* 5 */
+  CURLUE_URLDECODE,           /* 6 */
+  CURLUE_OUT_OF_MEMORY,       /* 7 */
+  CURLUE_USER_NOT_ALLOWED,    /* 8 */
+  CURLUE_UNKNOWN_PART,        /* 9 */
+  CURLUE_NO_SCHEME,           /* 10 */
+  CURLUE_NO_USER,             /* 11 */
+  CURLUE_NO_PASSWORD,         /* 12 */
+  CURLUE_NO_OPTIONS,          /* 13 */
+  CURLUE_NO_HOST,             /* 14 */
+  CURLUE_NO_PORT,             /* 15 */
+  CURLUE_NO_QUERY,            /* 16 */
+  CURLUE_NO_FRAGMENT,         /* 17 */
+  CURLUE_NO_ZONEID,           /* 18 */
+  CURLUE_BAD_FILE_URL,        /* 19 */
+  CURLUE_BAD_FRAGMENT,        /* 20 */
+  CURLUE_BAD_HOSTNAME,        /* 21 */
+  CURLUE_BAD_IPV6,            /* 22 */
+  CURLUE_BAD_LOGIN,           /* 23 */
+  CURLUE_BAD_PASSWORD,        /* 24 */
+  CURLUE_BAD_PATH,            /* 25 */
+  CURLUE_BAD_QUERY,           /* 26 */
+  CURLUE_BAD_SCHEME,          /* 27 */
+  CURLUE_BAD_SLASHES,         /* 28 */
+  CURLUE_BAD_USER,            /* 29 */
+  CURLUE_LACKS_IDN,           /* 30 */
+  CURLUE_TOO_LARGE,           /* 31 */
+  CURLUE_LAST
+} CURLUcode;
+
+typedef enum {
+  CURLUPART_URL,
+  CURLUPART_SCHEME,
+  CURLUPART_USER,
+  CURLUPART_PASSWORD,
+  CURLUPART_OPTIONS,
+  CURLUPART_HOST,
+  CURLUPART_PORT,
+  CURLUPART_PATH,
+  CURLUPART_QUERY,
+  CURLUPART_FRAGMENT,
+  CURLUPART_ZONEID /* added in 7.65.0 */
+} CURLUPart;
+
+#define CURLU_DEFAULT_PORT (1<<0)       /* return default port number */
+#define CURLU_NO_DEFAULT_PORT (1<<1)    /* act as if no port number was set,
+                                           if the port number matches the
+                                           default for the scheme */
+#define CURLU_DEFAULT_SCHEME (1<<2)     /* return default scheme if
+                                           missing */
+#define CURLU_NON_SUPPORT_SCHEME (1<<3) /* allow non-supported scheme */
+#define CURLU_PATH_AS_IS (1<<4)         /* leave dot sequences */
+#define CURLU_DISALLOW_USER (1<<5)      /* no user+password allowed */
+#define CURLU_URLDECODE (1<<6)          /* URL decode on get */
+#define CURLU_URLENCODE (1<<7)          /* URL encode on set */
+#define CURLU_APPENDQUERY (1<<8)        /* append a form style part */
+#define CURLU_GUESS_SCHEME (1<<9)       /* legacy curl-style guessing */
+#define CURLU_NO_AUTHORITY (1<<10)      /* Allow empty authority when the
+                                           scheme is unknown. */
+#define CURLU_ALLOW_SPACE (1<<11)       /* Allow spaces in the URL */
+#define CURLU_PUNYCODE (1<<12)          /* get the hostname in punycode */
+#define CURLU_PUNY2IDN (1<<13)          /* punycode => IDN conversion */
+#define CURLU_GET_EMPTY (1<<14)         /* allow empty queries and fragments
+                                           when extracting the URL or the
+                                           components */
+#define CURLU_NO_GUESS_SCHEME (1<<15)   /* for get, do not accept a guess */
+
+typedef struct Curl_URL CURLU;
+
+/*
+ * curl_url() creates a new CURLU handle and returns a pointer to it.
+ * Must be freed with curl_url_cleanup().
+ */
+CURL_EXTERN CURLU *curl_url(void);
+
+/*
+ * curl_url_cleanup() frees the CURLU handle and related resources used for
+ * the URL parsing. It will not free strings previously returned with the URL
+ * API.
+ */
+CURL_EXTERN void curl_url_cleanup(CURLU *handle);
+
+/*
+ * curl_url_dup() duplicates a CURLU handle and returns a new copy. The new
+ * handle must also be freed with curl_url_cleanup().
+ */
+CURL_EXTERN CURLU *curl_url_dup(const CURLU *in);
+
+/*
+ * curl_url_get() extracts a specific part of the URL from a CURLU
+ * handle. Returns error code. The returned pointer MUST be freed with
+ * curl_free() afterwards.
+ */
+CURL_EXTERN CURLUcode curl_url_get(const CURLU *handle, CURLUPart what,
+                                   char **part, unsigned int flags);
+
+/*
+ * curl_url_set() sets a specific part of the URL in a CURLU handle. Returns
+ * error code. The passed in string will be copied. Passing a NULL instead of
+ * a part string, clears that part.
+ */
+CURL_EXTERN CURLUcode curl_url_set(CURLU *handle, CURLUPart what,
+                                   const char *part, unsigned int flags);
+
+/*
+ * curl_url_strerror() turns a CURLUcode value into the equivalent human
+ * readable error string. This is useful for printing meaningful error
+ * messages.
+ */
+CURL_EXTERN const char *curl_url_strerror(CURLUcode);
+
+#ifdef __cplusplus
+} /* end of extern "C" */
+#endif
+
+#endif /* CURLINC_URLAPI_H */

3rdparty/curl/include/curl/websockets.h

@@ -0,0 +1,84 @@
+#ifndef CURLINC_WEBSOCKETS_H
+#define CURLINC_WEBSOCKETS_H
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at https://curl.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ * SPDX-License-Identifier: curl
+ *
+ ***************************************************************************/
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+struct curl_ws_frame {
+  int age;              /* zero */
+  int flags;            /* See the CURLWS_* defines */
+  curl_off_t offset;    /* the offset of this data into the frame */
+  curl_off_t bytesleft; /* number of pending bytes left of the payload */
+  size_t len;           /* size of the current data chunk */
+};
+
+/* flag bits */
+#define CURLWS_TEXT       (1<<0)
+#define CURLWS_BINARY     (1<<1)
+#define CURLWS_CONT       (1<<2)
+#define CURLWS_CLOSE      (1<<3)
+#define CURLWS_PING       (1<<4)
+#define CURLWS_OFFSET     (1<<5)
+
+/*
+ * NAME curl_ws_recv()
+ *
+ * DESCRIPTION
+ *
+ * Receives data from the websocket connection. Use after successful
+ * curl_easy_perform() with CURLOPT_CONNECT_ONLY option.
+ */
+CURL_EXTERN CURLcode curl_ws_recv(CURL *curl, void *buffer, size_t buflen,
+                                  size_t *recv,
+                                  const struct curl_ws_frame **metap);
+
+/* flags for curl_ws_send() */
+#define CURLWS_PONG       (1<<6)
+
+/*
+ * NAME curl_ws_send()
+ *
+ * DESCRIPTION
+ *
+ * Sends data over the websocket connection. Use after successful
+ * curl_easy_perform() with CURLOPT_CONNECT_ONLY option.
+ */
+CURL_EXTERN CURLcode curl_ws_send(CURL *curl, const void *buffer,
+                                  size_t buflen, size_t *sent,
+                                  curl_off_t fragsize,
+                                  unsigned int flags);
+
+/* bits for the CURLOPT_WS_OPTIONS bitmask: */
+#define CURLWS_RAW_MODE (1<<0)
+
+CURL_EXTERN const struct curl_ws_frame *curl_ws_meta(CURL *curl);
+
+#ifdef  __cplusplus
+}
+#endif
+
+#endif /* CURLINC_WEBSOCKETS_H */

3rdparty/curl/lib/cmake/CURL/CURLConfig.cmake

@@ -0,0 +1,75 @@
+#***************************************************************************
+#                                  _   _ ____  _
+#  Project                     ___| | | |  _ \| |
+#                             / __| | | | |_) | |
+#                            | (__| |_| |  _ <| |___
+#                             \___|\___/|_| \_\_____|
+#
+# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+#
+# This software is licensed as described in the file COPYING, which
+# you should have received as part of this distribution. The terms
+# are also available at https://curl.se/docs/copyright.html.
+#
+# You may opt to use, copy, modify, merge, publish, distribute and/or sell
+# copies of the Software, and permit persons to whom the Software is
+# furnished to do so, under the terms of the COPYING file.
+#
+# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+# KIND, either express or implied.
+#
+# SPDX-License-Identifier: curl
+#
+###########################################################################
+
+####### Expanded from @PACKAGE_INIT@ by configure_package_config_file() #######
+####### Any changes to this file will be overwritten by the next CMake run ####
+####### The input file was curl-config.cmake.in                            ########
+
+get_filename_component(PACKAGE_PREFIX_DIR "${CMAKE_CURRENT_LIST_DIR}/../../../" ABSOLUTE)
+
+macro(set_and_check _var _file)
+  set(${_var} "${_file}")
+  if(NOT EXISTS "${_file}")
+    message(FATAL_ERROR "File or directory ${_file} referenced by variable ${_var} does not exist !")
+  endif()
+endmacro()
+
+macro(check_required_components _NAME)
+  foreach(comp ${${_NAME}_FIND_COMPONENTS})
+    if(NOT ${_NAME}_${comp}_FOUND)
+      if(${_NAME}_FIND_REQUIRED_${comp})
+        set(${_NAME}_FOUND FALSE)
+      endif()
+    endif()
+  endforeach()
+endmacro()
+
+####################################################################################
+
+if(UNIX OR VCPKG_TOOLCHAIN OR (MINGW AND NOT CMAKE_CROSSCOMPILING))  # Keep in sync with root CMakeLists.txt
+  set(_curl_use_pkgconfig_default ON)
+else()
+  set(_curl_use_pkgconfig_default OFF)
+endif()
+option(CURL_USE_PKGCONFIG "Enable pkg-config to detect CURL dependencies" ${_curl_use_pkgconfig_default})
+
+include(CMakeFindDependencyMacro)
+if("ON")
+  find_dependency(OpenSSL "3")
+endif()
+if("ON")
+  find_dependency(ZLIB "1")
+endif()
+
+include("${CMAKE_CURRENT_LIST_DIR}/CURLTargets.cmake")
+check_required_components("CURL")
+
+# Alias for either shared or static library
+if(NOT TARGET CURL::libcurl)
+  add_library(CURL::libcurl ALIAS CURL::libcurl_static)
+endif()
+
+# For compatibility with CMake's FindCURL.cmake
+set(CURL_LIBRARIES CURL::libcurl)
+set_and_check(CURL_INCLUDE_DIRS "${PACKAGE_PREFIX_DIR}/include")

3rdparty/curl/lib/cmake/CURL/CURLConfigVersion.cmake

@@ -0,0 +1,76 @@
+
+    if(NOT PACKAGE_FIND_VERSION_RANGE AND PACKAGE_FIND_VERSION_MAJOR STREQUAL "7")
+      # Version 8 satisfies version 7... requirements
+      set(PACKAGE_FIND_VERSION_MAJOR 8)
+      set(PACKAGE_FIND_VERSION_COUNT 1)
+    endif()
+    # This is a basic version file for the Config-mode of find_package().
+# It is used by write_basic_package_version_file() as input file for configure_file()
+# to create a version-file which can be installed along a config.cmake file.
+#
+# The created file sets PACKAGE_VERSION_EXACT if the current version string and
+# the requested version string are exactly the same and it sets
+# PACKAGE_VERSION_COMPATIBLE if the current version is >= requested version,
+# but only if the requested major version is the same as the current one.
+# The variable CVF_VERSION must be set before calling configure_file().
+
+
+set(PACKAGE_VERSION "8.11.0-DEV")
+
+if(PACKAGE_VERSION VERSION_LESS PACKAGE_FIND_VERSION)
+  set(PACKAGE_VERSION_COMPATIBLE FALSE)
+else()
+
+  if("8.11.0-DEV" MATCHES "^([0-9]+)\\.")
+    set(CVF_VERSION_MAJOR "${CMAKE_MATCH_1}")
+    if(NOT CVF_VERSION_MAJOR VERSION_EQUAL 0)
+      string(REGEX REPLACE "^0+" "" CVF_VERSION_MAJOR "${CVF_VERSION_MAJOR}")
+    endif()
+  else()
+    set(CVF_VERSION_MAJOR "8.11.0-DEV")
+  endif()
+
+  if(PACKAGE_FIND_VERSION_RANGE)
+    # both endpoints of the range must have the expected major version
+    math (EXPR CVF_VERSION_MAJOR_NEXT "${CVF_VERSION_MAJOR} + 1")
+    if (NOT PACKAGE_FIND_VERSION_MIN_MAJOR STREQUAL CVF_VERSION_MAJOR
+        OR ((PACKAGE_FIND_VERSION_RANGE_MAX STREQUAL "INCLUDE" AND NOT PACKAGE_FIND_VERSION_MAX_MAJOR STREQUAL CVF_VERSION_MAJOR)
+          OR (PACKAGE_FIND_VERSION_RANGE_MAX STREQUAL "EXCLUDE" AND NOT PACKAGE_FIND_VERSION_MAX VERSION_LESS_EQUAL CVF_VERSION_MAJOR_NEXT)))
+      set(PACKAGE_VERSION_COMPATIBLE FALSE)
+    elseif(PACKAGE_FIND_VERSION_MIN_MAJOR STREQUAL CVF_VERSION_MAJOR
+        AND ((PACKAGE_FIND_VERSION_RANGE_MAX STREQUAL "INCLUDE" AND PACKAGE_VERSION VERSION_LESS_EQUAL PACKAGE_FIND_VERSION_MAX)
+        OR (PACKAGE_FIND_VERSION_RANGE_MAX STREQUAL "EXCLUDE" AND PACKAGE_VERSION VERSION_LESS PACKAGE_FIND_VERSION_MAX)))
+      set(PACKAGE_VERSION_COMPATIBLE TRUE)
+    else()
+      set(PACKAGE_VERSION_COMPATIBLE FALSE)
+    endif()
+  else()
+    if(PACKAGE_FIND_VERSION_MAJOR STREQUAL CVF_VERSION_MAJOR)
+      set(PACKAGE_VERSION_COMPATIBLE TRUE)
+    else()
+      set(PACKAGE_VERSION_COMPATIBLE FALSE)
+    endif()
+
+    if(PACKAGE_FIND_VERSION STREQUAL PACKAGE_VERSION)
+      set(PACKAGE_VERSION_EXACT TRUE)
+    endif()
+  endif()
+endif()
+
+
+# if the installed project requested no architecture check, don't perform the check
+if("FALSE")
+  return()
+endif()
+
+# if the installed or the using project don't have CMAKE_SIZEOF_VOID_P set, ignore it:
+if("${CMAKE_SIZEOF_VOID_P}" STREQUAL "" OR "8" STREQUAL "")
+  return()
+endif()
+
+# check that the installed version has the same 32/64bit-ness as the one which is currently searching:
+if(NOT CMAKE_SIZEOF_VOID_P STREQUAL "8")
+  math(EXPR installedBits "8 * 8")
+  set(PACKAGE_VERSION "${PACKAGE_VERSION} (${installedBits}bit)")
+  set(PACKAGE_VERSION_UNSUITABLE TRUE)
+endif()

3rdparty/curl/lib/cmake/CURL/CURLTargets-release.cmake

@@ -0,0 +1,28 @@
+#----------------------------------------------------------------
+# Generated CMake target import file for configuration "Release".
+#----------------------------------------------------------------
+
+# Commands may need to know the format version.
+set(CMAKE_IMPORT_FILE_VERSION 1)
+
+# Import target "CURL::libcurl_static" for configuration "Release"
+set_property(TARGET CURL::libcurl_static APPEND PROPERTY IMPORTED_CONFIGURATIONS RELEASE)
+set_target_properties(CURL::libcurl_static PROPERTIES
+  IMPORTED_LINK_INTERFACE_LANGUAGES_RELEASE "C"
+  IMPORTED_LOCATION_RELEASE "${_IMPORT_PREFIX}/lib/libcurl.a"
+  )
+
+list(APPEND _cmake_import_check_targets CURL::libcurl_static )
+list(APPEND _cmake_import_check_files_for_CURL::libcurl_static "${_IMPORT_PREFIX}/lib/libcurl.a" )
+
+# Import target "CURL::curl" for configuration "Release"
+set_property(TARGET CURL::curl APPEND PROPERTY IMPORTED_CONFIGURATIONS RELEASE)
+set_target_properties(CURL::curl PROPERTIES
+  IMPORTED_LOCATION_RELEASE "${_IMPORT_PREFIX}/bin/curl.exe"
+  )
+
+list(APPEND _cmake_import_check_targets CURL::curl )
+list(APPEND _cmake_import_check_files_for_CURL::curl "${_IMPORT_PREFIX}/bin/curl.exe" )
+
+# Commands beyond this point should not need to know the version.
+set(CMAKE_IMPORT_FILE_VERSION)

3rdparty/curl/lib/cmake/CURL/CURLTargets.cmake

@@ -0,0 +1,111 @@
+# Generated by CMake
+
+if("${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}" LESS 2.8)
+   message(FATAL_ERROR "CMake >= 2.8.0 required")
+endif()
+if(CMAKE_VERSION VERSION_LESS "2.8.3")
+   message(FATAL_ERROR "CMake >= 2.8.3 required")
+endif()
+cmake_policy(PUSH)
+cmake_policy(VERSION 2.8.3...3.22)
+#----------------------------------------------------------------
+# Generated CMake target import file.
+#----------------------------------------------------------------
+
+# Commands may need to know the format version.
+set(CMAKE_IMPORT_FILE_VERSION 1)
+
+# Protect against multiple inclusion, which would fail when already imported targets are added once more.
+set(_cmake_targets_defined "")
+set(_cmake_targets_not_defined "")
+set(_cmake_expected_targets "")
+foreach(_cmake_expected_target IN ITEMS CURL::libcurl_static CURL::curl)
+  list(APPEND _cmake_expected_targets "${_cmake_expected_target}")
+  if(TARGET "${_cmake_expected_target}")
+    list(APPEND _cmake_targets_defined "${_cmake_expected_target}")
+  else()
+    list(APPEND _cmake_targets_not_defined "${_cmake_expected_target}")
+  endif()
+endforeach()
+unset(_cmake_expected_target)
+if(_cmake_targets_defined STREQUAL _cmake_expected_targets)
+  unset(_cmake_targets_defined)
+  unset(_cmake_targets_not_defined)
+  unset(_cmake_expected_targets)
+  unset(CMAKE_IMPORT_FILE_VERSION)
+  cmake_policy(POP)
+  return()
+endif()
+if(NOT _cmake_targets_defined STREQUAL "")
+  string(REPLACE ";" ", " _cmake_targets_defined_text "${_cmake_targets_defined}")
+  string(REPLACE ";" ", " _cmake_targets_not_defined_text "${_cmake_targets_not_defined}")
+  message(FATAL_ERROR "Some (but not all) targets in this export set were already defined.\nTargets Defined: ${_cmake_targets_defined_text}\nTargets not yet defined: ${_cmake_targets_not_defined_text}\n")
+endif()
+unset(_cmake_targets_defined)
+unset(_cmake_targets_not_defined)
+unset(_cmake_expected_targets)
+
+
+# Compute the installation prefix relative to this file.
+get_filename_component(_IMPORT_PREFIX "${CMAKE_CURRENT_LIST_FILE}" PATH)
+get_filename_component(_IMPORT_PREFIX "${_IMPORT_PREFIX}" PATH)
+get_filename_component(_IMPORT_PREFIX "${_IMPORT_PREFIX}" PATH)
+get_filename_component(_IMPORT_PREFIX "${_IMPORT_PREFIX}" PATH)
+if(_IMPORT_PREFIX STREQUAL "/")
+  set(_IMPORT_PREFIX "")
+endif()
+
+# Create imported target CURL::libcurl_static
+add_library(CURL::libcurl_static STATIC IMPORTED)
+
+set_target_properties(CURL::libcurl_static PROPERTIES
+  INTERFACE_COMPILE_DEFINITIONS "CURL_STATICLIB"
+  INTERFACE_INCLUDE_DIRECTORIES "${_IMPORT_PREFIX}/include"
+  INTERFACE_LINK_LIBRARIES "\$<LINK_ONLY:idn2>;\$<LINK_ONLY:ws2_32>;\$<LINK_ONLY:bcrypt>;\$<LINK_ONLY:OpenSSL::SSL>;\$<LINK_ONLY:OpenSSL::Crypto>;\$<LINK_ONLY:ZLIB::ZLIB>;D:/Dev/msys64/mingw64/lib/libzstd.dll.a;D:/Dev/msys64/mingw64/lib/libnghttp2.dll.a;D:/Dev/msys64/mingw64/lib/libnghttp3.dll.a;\$<LINK_ONLY:wldap32>;D:/Dev/msys64/mingw64/lib/libpsl.dll.a;D:/Dev/msys64/mingw64/lib/libssh2.dll.a;\$<LINK_ONLY:advapi32>;\$<LINK_ONLY:crypt32>"
+)
+
+# Create imported target CURL::curl
+add_executable(CURL::curl IMPORTED)
+
+if(CMAKE_VERSION VERSION_LESS 2.8.12)
+  message(FATAL_ERROR "This file relies on consumers using CMake 2.8.12 or greater.")
+endif()
+
+# Load information for each installed configuration.
+file(GLOB _cmake_config_files "${CMAKE_CURRENT_LIST_DIR}/CURLTargets-*.cmake")
+foreach(_cmake_config_file IN LISTS _cmake_config_files)
+  include("${_cmake_config_file}")
+endforeach()
+unset(_cmake_config_file)
+unset(_cmake_config_files)
+
+# Cleanup temporary variables.
+set(_IMPORT_PREFIX)
+
+# Loop over all imported files and verify that they actually exist
+foreach(_cmake_target IN LISTS _cmake_import_check_targets)
+  foreach(_cmake_file IN LISTS "_cmake_import_check_files_for_${_cmake_target}")
+    if(NOT EXISTS "${_cmake_file}")
+      message(FATAL_ERROR "The imported target \"${_cmake_target}\" references the file
+   \"${_cmake_file}\"
+but this file does not exist.  Possible reasons include:
+* The file was deleted, renamed, or moved to another location.
+* An install or uninstall procedure did not complete successfully.
+* The installation package was faulty and contained
+   \"${CMAKE_CURRENT_LIST_FILE}\"
+but not all the files it references.
+")
+    endif()
+  endforeach()
+  unset(_cmake_file)
+  unset("_cmake_import_check_files_for_${_cmake_target}")
+endforeach()
+unset(_cmake_target)
+unset(_cmake_import_check_targets)
+
+# This file does not depend on other imported targets which have
+# been exported from the same project but in a separate export set.
+
+# Commands beyond this point should not need to know the version.
+set(CMAKE_IMPORT_FILE_VERSION)
+cmake_policy(POP)

3rdparty/curl/lib/pkgconfig/libcurl.pc

@@ -0,0 +1,41 @@
+#***************************************************************************
+#                                  _   _ ____  _
+#  Project                     ___| | | |  _ \| |
+#                             / __| | | | |_) | |
+#                            | (__| |_| |  _ <| |___
+#                             \___|\___/|_| \_\_____|
+#
+# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+#
+# This software is licensed as described in the file COPYING, which
+# you should have received as part of this distribution. The terms
+# are also available at https://curl.se/docs/copyright.html.
+#
+# You may opt to use, copy, modify, merge, publish, distribute and/or sell
+# copies of the Software, and permit persons to whom the Software is
+# furnished to do so, under the terms of the COPYING file.
+#
+# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+# KIND, either express or implied.
+#
+# SPDX-License-Identifier: curl
+#
+###########################################################################
+
+prefix=F:\SourceCode\curl\build\curl
+exec_prefix=${prefix}
+libdir=${exec_prefix}/lib
+includedir=${prefix}/include
+supported_protocols="DICT FILE FTP FTPS GOPHER GOPHERS HTTP HTTPS IMAP IMAPS IPFS IPNS LDAP LDAPS MQTT POP3 POP3S RTSP SCP SFTP SMB SMBS SMTP SMTPS TELNET TFTP"
+supported_features="alt-svc AsynchDNS HSTS HTTP2 HTTP3 HTTPS-proxy IDN IPv6 Largefile libz NTLM PSL SSL threadsafe TLS-SRP UnixSockets zstd"
+
+Name: libcurl
+URL: https://curl.se/
+Description: Library to transfer files with HTTP, FTP, etc.
+Version: 8.11.0-DEV
+Requires: libidn2,openssl,zlib,libzstd,libnghttp2,libnghttp3,libpsl,libssh2
+Requires.private: libidn2,openssl,zlib,libzstd,libnghttp2,libnghttp3,libpsl,libssh2
+Libs: -L${libdir} -lcurl -lidn2 -lws2_32 -lbcrypt -lssl -lcrypto -lz -lzstd -lnghttp2 -lnghttp3 -lwldap32 -lpsl -lssh2 -ladvapi32 -lcrypt32
+Libs.private: -LD:/Dev/msys64/mingw64/bin/../lib -LD:/Dev/msys64/mingw64/lib -lidn2 -lws2_32 -lbcrypt -lssl -lcrypto -lz -lzstd -lnghttp2 -lnghttp3 -lwldap32 -lpsl -lssh2 -ladvapi32 -lcrypt32
+Cflags: -I${includedir} -DCURL_STATICLIB
+Cflags.private: -DCURL_STATICLIB

3rdparty/libgit2/include/git2.h

@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+
+#ifndef INCLUDE_git_git_h__
+#define INCLUDE_git_git_h__
+
+#include "git2/annotated_commit.h"
+#include "git2/apply.h"
+#include "git2/attr.h"
+#include "git2/blob.h"
+#include "git2/blame.h"
+#include "git2/branch.h"
+#include "git2/buffer.h"
+#include "git2/cert.h"
+#include "git2/checkout.h"
+#include "git2/cherrypick.h"
+#include "git2/clone.h"
+#include "git2/commit.h"
+#include "git2/common.h"
+#include "git2/config.h"
+#include "git2/credential.h"
+#include "git2/deprecated.h"
+#include "git2/describe.h"
+#include "git2/diff.h"
+#include "git2/email.h"
+#include "git2/errors.h"
+#include "git2/experimental.h"
+#include "git2/filter.h"
+#include "git2/global.h"
+#include "git2/graph.h"
+#include "git2/ignore.h"
+#include "git2/index.h"
+#include "git2/indexer.h"
+#include "git2/mailmap.h"
+#include "git2/merge.h"
+#include "git2/message.h"
+#include "git2/net.h"
+#include "git2/notes.h"
+#include "git2/object.h"
+#include "git2/odb.h"
+#include "git2/odb_backend.h"
+#include "git2/oid.h"
+#include "git2/pack.h"
+#include "git2/patch.h"
+#include "git2/pathspec.h"
+#include "git2/proxy.h"
+#include "git2/rebase.h"
+#include "git2/refdb.h"
+#include "git2/reflog.h"
+#include "git2/refs.h"
+#include "git2/refspec.h"
+#include "git2/remote.h"
+#include "git2/repository.h"
+#include "git2/reset.h"
+#include "git2/revert.h"
+#include "git2/revparse.h"
+#include "git2/revwalk.h"
+#include "git2/signature.h"
+#include "git2/stash.h"
+#include "git2/status.h"
+#include "git2/submodule.h"
+#include "git2/tag.h"
+#include "git2/transport.h"
+#include "git2/transaction.h"
+#include "git2/tree.h"
+#include "git2/types.h"
+#include "git2/version.h"
+#include "git2/worktree.h"
+
+#endif

3rdparty/libgit2/include/git2/annotated_commit.h

@@ -0,0 +1,125 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_annotated_commit_h__
+#define INCLUDE_git_annotated_commit_h__
+
+#include "common.h"
+#include "repository.h"
+#include "types.h"
+
+/**
+ * @file git2/annotated_commit.h
+ * @brief Git annotated commit routines
+ * @defgroup git_annotated_commit Git annotated commit routines
+ * @ingroup Git
+ * @{
+ */
+GIT_BEGIN_DECL
+
+/**
+ * Creates a `git_annotated_commit` from the given reference.
+ * The resulting git_annotated_commit must be freed with
+ * `git_annotated_commit_free`.
+ *
+ * @param out pointer to store the git_annotated_commit result in
+ * @param repo repository that contains the given reference
+ * @param ref reference to use to lookup the git_annotated_commit
+ * @return 0 on success or error code
+ */
+GIT_EXTERN(int) git_annotated_commit_from_ref(
+	git_annotated_commit **out,
+	git_repository *repo,
+	const git_reference *ref);
+
+/**
+ * Creates a `git_annotated_commit` from the given fetch head data.
+ * The resulting git_annotated_commit must be freed with
+ * `git_annotated_commit_free`.
+ *
+ * @param out pointer to store the git_annotated_commit result in
+ * @param repo repository that contains the given commit
+ * @param branch_name name of the (remote) branch
+ * @param remote_url url of the remote
+ * @param id the commit object id of the remote branch
+ * @return 0 on success or error code
+ */
+GIT_EXTERN(int) git_annotated_commit_from_fetchhead(
+	git_annotated_commit **out,
+	git_repository *repo,
+	const char *branch_name,
+	const char *remote_url,
+	const git_oid *id);
+
+/**
+ * Creates a `git_annotated_commit` from the given commit id.
+ * The resulting git_annotated_commit must be freed with
+ * `git_annotated_commit_free`.
+ *
+ * An annotated commit contains information about how it was
+ * looked up, which may be useful for functions like merge or
+ * rebase to provide context to the operation.  For example,
+ * conflict files will include the name of the source or target
+ * branches being merged.  It is therefore preferable to use the
+ * most specific function (eg `git_annotated_commit_from_ref`)
+ * instead of this one when that data is known.
+ *
+ * @param out pointer to store the git_annotated_commit result in
+ * @param repo repository that contains the given commit
+ * @param id the commit object id to lookup
+ * @return 0 on success or error code
+ */
+GIT_EXTERN(int) git_annotated_commit_lookup(
+	git_annotated_commit **out,
+	git_repository *repo,
+	const git_oid *id);
+
+/**
+ * Creates a `git_annotated_commit` from a revision string.
+ *
+ * See `man gitrevisions`, or
+ * http://git-scm.com/docs/git-rev-parse.html#_specifying_revisions for
+ * information on the syntax accepted.
+ *
+ * @param out pointer to store the git_annotated_commit result in
+ * @param repo repository that contains the given commit
+ * @param revspec the extended sha syntax string to use to lookup the commit
+ * @return 0 on success or error code
+ */
+GIT_EXTERN(int) git_annotated_commit_from_revspec(
+	git_annotated_commit **out,
+	git_repository *repo,
+	const char *revspec);
+
+/**
+ * Gets the commit ID that the given `git_annotated_commit` refers to.
+ *
+ * @param commit the given annotated commit
+ * @return commit id
+ */
+GIT_EXTERN(const git_oid *) git_annotated_commit_id(
+	const git_annotated_commit *commit);
+
+/**
+ * Get the refname that the given `git_annotated_commit` refers to.
+ *
+ * @param commit the given annotated commit
+ * @return ref name.
+ */
+GIT_EXTERN(const char *) git_annotated_commit_ref(
+	const git_annotated_commit *commit);
+
+/**
+ * Frees a `git_annotated_commit`.
+ *
+ * @param commit annotated commit to free
+ */
+GIT_EXTERN(void) git_annotated_commit_free(
+	git_annotated_commit *commit);
+
+/** @} */
+GIT_END_DECL
+#endif

3rdparty/libgit2/include/git2/apply.h

@@ -0,0 +1,165 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_apply_h__
+#define INCLUDE_git_apply_h__
+
+#include "common.h"
+#include "types.h"
+#include "oid.h"
+#include "diff.h"
+
+/**
+ * @file git2/apply.h
+ * @brief Git patch application routines
+ * @defgroup git_apply Git patch application routines
+ * @ingroup Git
+ * @{
+ */
+GIT_BEGIN_DECL
+
+/**
+ * When applying a patch, callback that will be made per delta (file).
+ *
+ * When the callback:
+ * - returns < 0, the apply process will be aborted.
+ * - returns > 0, the delta will not be applied, but the apply process
+ *      continues
+ * - returns 0, the delta is applied, and the apply process continues.
+ *
+ * @param delta The delta to be applied
+ * @param payload User-specified payload
+ * @return 0 if the delta is applied, < 0 if the apply process will be aborted
+ *	or > 0 if the delta will not be applied.
+ */
+typedef int GIT_CALLBACK(git_apply_delta_cb)(
+	const git_diff_delta *delta,
+	void *payload);
+
+/**
+ * When applying a patch, callback that will be made per hunk.
+ *
+ * When the callback:
+ * - returns < 0, the apply process will be aborted.
+ * - returns > 0, the hunk will not be applied, but the apply process
+ *      continues
+ * - returns 0, the hunk is applied, and the apply process continues.
+ *
+ * @param hunk The hunk to be applied
+ * @param payload User-specified payload
+ * @return 0 if the hunk is applied, < 0 if the apply process will be aborted
+ *	or > 0 if the hunk will not be applied.
+ */
+typedef int GIT_CALLBACK(git_apply_hunk_cb)(
+	const git_diff_hunk *hunk,
+	void *payload);
+
+/** Flags controlling the behavior of git_apply */
+typedef enum {
+	/**
+	 * Don't actually make changes, just test that the patch applies.
+	 * This is the equivalent of `git apply --check`.
+	 */
+	GIT_APPLY_CHECK = (1 << 0)
+} git_apply_flags_t;
+
+/**
+ * Apply options structure
+ *
+ * Initialize with `GIT_APPLY_OPTIONS_INIT`. Alternatively, you can
+ * use `git_apply_options_init`.
+ *
+ * @see git_apply_to_tree, git_apply
+ */
+typedef struct {
+	unsigned int version; /**< The version */
+
+	/** When applying a patch, callback that will be made per delta (file). */
+	git_apply_delta_cb delta_cb;
+
+	/** When applying a patch, callback that will be made per hunk. */
+	git_apply_hunk_cb hunk_cb;
+
+	/** Payload passed to both delta_cb & hunk_cb. */
+	void *payload;
+
+	/** Bitmask of git_apply_flags_t */
+	unsigned int flags;
+} git_apply_options;
+
+#define GIT_APPLY_OPTIONS_VERSION 1
+#define GIT_APPLY_OPTIONS_INIT {GIT_APPLY_OPTIONS_VERSION}
+
+/**
+ * Initialize git_apply_options structure
+ *
+ * Initialize a `git_apply_options` with default values. Equivalent to creating
+ * an instance with GIT_APPLY_OPTIONS_INIT.
+ *
+ * @param opts The `git_apply_options` struct to initialize.
+ * @param version The struct version; pass `GIT_APPLY_OPTIONS_VERSION`
+ * @return 0 on success or -1 on failure.
+ */
+GIT_EXTERN(int) git_apply_options_init(git_apply_options *opts, unsigned int version);
+
+/**
+ * Apply a `git_diff` to a `git_tree`, and return the resulting image
+ * as an index.
+ *
+ * @param out the postimage of the application
+ * @param repo the repository to apply
+ * @param preimage the tree to apply the diff to
+ * @param diff the diff to apply
+ * @param options the options for the apply (or null for defaults)
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_apply_to_tree(
+	git_index **out,
+	git_repository *repo,
+	git_tree *preimage,
+	git_diff *diff,
+	const git_apply_options *options);
+
+/** Possible application locations for git_apply */
+typedef enum {
+	/**
+	 * Apply the patch to the workdir, leaving the index untouched.
+	 * This is the equivalent of `git apply` with no location argument.
+	 */
+	GIT_APPLY_LOCATION_WORKDIR = 0,
+
+	/**
+	 * Apply the patch to the index, leaving the working directory
+	 * untouched.  This is the equivalent of `git apply --cached`.
+	 */
+	GIT_APPLY_LOCATION_INDEX = 1,
+
+	/**
+	 * Apply the patch to both the working directory and the index.
+	 * This is the equivalent of `git apply --index`.
+	 */
+	GIT_APPLY_LOCATION_BOTH = 2
+} git_apply_location_t;
+
+/**
+ * Apply a `git_diff` to the given repository, making changes directly
+ * in the working directory, the index, or both.
+ *
+ * @param repo the repository to apply to
+ * @param diff the diff to apply
+ * @param location the location to apply (workdir, index or both)
+ * @param options the options for the apply (or null for defaults)
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_apply(
+	git_repository *repo,
+	git_diff *diff,
+	git_apply_location_t location,
+	const git_apply_options *options);
+
+/** @} */
+GIT_END_DECL
+#endif

3rdparty/libgit2/include/git2/attr.h

@@ -0,0 +1,368 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_attr_h__
+#define INCLUDE_git_attr_h__
+
+#include "common.h"
+#include "types.h"
+
+/**
+ * @file git2/attr.h
+ * @brief Git attribute management routines
+ * @defgroup git_attr Git attribute management routines
+ * @ingroup Git
+ * @{
+ */
+GIT_BEGIN_DECL
+
+/**
+ * GIT_ATTR_TRUE checks if an attribute is set on.  In core git
+ * parlance, this the value for "Set" attributes.
+ *
+ * For example, if the attribute file contains:
+ *
+ *    *.c foo
+ *
+ * Then for file `xyz.c` looking up attribute "foo" gives a value for
+ * which `GIT_ATTR_TRUE(value)` is true.
+ */
+#define GIT_ATTR_IS_TRUE(attr)	(git_attr_value(attr) == GIT_ATTR_VALUE_TRUE)
+
+/**
+ * GIT_ATTR_FALSE checks if an attribute is set off.  In core git
+ * parlance, this is the value for attributes that are "Unset" (not to
+ * be confused with values that a "Unspecified").
+ *
+ * For example, if the attribute file contains:
+ *
+ *    *.h -foo
+ *
+ * Then for file `zyx.h` looking up attribute "foo" gives a value for
+ * which `GIT_ATTR_FALSE(value)` is true.
+ */
+#define GIT_ATTR_IS_FALSE(attr) (git_attr_value(attr) == GIT_ATTR_VALUE_FALSE)
+
+/**
+ * GIT_ATTR_UNSPECIFIED checks if an attribute is unspecified.  This
+ * may be due to the attribute not being mentioned at all or because
+ * the attribute was explicitly set unspecified via the `!` operator.
+ *
+ * For example, if the attribute file contains:
+ *
+ *    *.c foo
+ *    *.h -foo
+ *    onefile.c !foo
+ *
+ * Then for `onefile.c` looking up attribute "foo" yields a value with
+ * `GIT_ATTR_UNSPECIFIED(value)` of true.  Also, looking up "foo" on
+ * file `onefile.rb` or looking up "bar" on any file will all give
+ * `GIT_ATTR_UNSPECIFIED(value)` of true.
+ */
+#define GIT_ATTR_IS_UNSPECIFIED(attr) (git_attr_value(attr) == GIT_ATTR_VALUE_UNSPECIFIED)
+
+/**
+ * GIT_ATTR_HAS_VALUE checks if an attribute is set to a value (as
+ * opposed to TRUE, FALSE or UNSPECIFIED).  This would be the case if
+ * for a file with something like:
+ *
+ *    *.txt eol=lf
+ *
+ * Given this, looking up "eol" for `onefile.txt` will give back the
+ * string "lf" and `GIT_ATTR_SET_TO_VALUE(attr)` will return true.
+ */
+#define GIT_ATTR_HAS_VALUE(attr) (git_attr_value(attr) == GIT_ATTR_VALUE_STRING)
+
+/**
+ * Possible states for an attribute
+ */
+typedef enum {
+	GIT_ATTR_VALUE_UNSPECIFIED = 0, /**< The attribute has been left unspecified */
+	GIT_ATTR_VALUE_TRUE,   /**< The attribute has been set */
+	GIT_ATTR_VALUE_FALSE,  /**< The attribute has been unset */
+	GIT_ATTR_VALUE_STRING  /**< This attribute has a value */
+} git_attr_value_t;
+
+/**
+ * Return the value type for a given attribute.
+ *
+ * This can be either `TRUE`, `FALSE`, `UNSPECIFIED` (if the attribute
+ * was not set at all), or `VALUE`, if the attribute was set to an
+ * actual string.
+ *
+ * If the attribute has a `VALUE` string, it can be accessed normally
+ * as a NULL-terminated C string.
+ *
+ * @param attr The attribute
+ * @return the value type for the attribute
+ */
+GIT_EXTERN(git_attr_value_t) git_attr_value(const char *attr);
+
+/**
+ * Check attribute flags: Reading values from index and working directory.
+ *
+ * When checking attributes, it is possible to check attribute files
+ * in both the working directory (if there is one) and the index (if
+ * there is one).  You can explicitly choose where to check and in
+ * which order using the following flags.
+ *
+ * Core git usually checks the working directory then the index,
+ * except during a checkout when it checks the index first.  It will
+ * use index only for creating archives or for a bare repo (if an
+ * index has been specified for the bare repo).
+ */
+#define GIT_ATTR_CHECK_FILE_THEN_INDEX	0
+#define GIT_ATTR_CHECK_INDEX_THEN_FILE	1
+#define GIT_ATTR_CHECK_INDEX_ONLY	2
+
+/**
+ * Check attribute flags: controlling extended attribute behavior.
+ *
+ * Normally, attribute checks include looking in the /etc (or system
+ * equivalent) directory for a `gitattributes` file.  Passing the
+ * `GIT_ATTR_CHECK_NO_SYSTEM` flag will cause attribute checks to
+ * ignore that file.
+ *
+ * Passing the `GIT_ATTR_CHECK_INCLUDE_HEAD` flag will use attributes
+ * from a `.gitattributes` file in the repository at the HEAD revision.
+ *
+ * Passing the `GIT_ATTR_CHECK_INCLUDE_COMMIT` flag will use attributes
+ * from a `.gitattributes` file in a specific commit.
+ */
+#define GIT_ATTR_CHECK_NO_SYSTEM        (1 << 2)
+#define GIT_ATTR_CHECK_INCLUDE_HEAD     (1 << 3)
+#define GIT_ATTR_CHECK_INCLUDE_COMMIT   (1 << 4)
+
+/**
+* An options structure for querying attributes.
+*/
+typedef struct {
+	unsigned int version;
+
+	/** A combination of GIT_ATTR_CHECK flags */
+	unsigned int flags;
+
+#ifdef GIT_DEPRECATE_HARD
+	void *reserved;
+#else
+	git_oid *commit_id;
+#endif
+
+	/**
+	 * The commit to load attributes from, when
+	 * `GIT_ATTR_CHECK_INCLUDE_COMMIT` is specified.
+	 */
+	git_oid attr_commit_id;
+} git_attr_options;
+
+#define GIT_ATTR_OPTIONS_VERSION 1
+#define GIT_ATTR_OPTIONS_INIT {GIT_ATTR_OPTIONS_VERSION}
+
+/**
+ * Look up the value of one git attribute for path.
+ *
+ * @param value_out Output of the value of the attribute.  Use the GIT_ATTR_...
+ *             macros to test for TRUE, FALSE, UNSPECIFIED, etc. or just
+ *             use the string value for attributes set to a value.  You
+ *             should NOT modify or free this value.
+ * @param repo The repository containing the path.
+ * @param flags A combination of GIT_ATTR_CHECK... flags.
+ * @param path The path to check for attributes.  Relative paths are
+ *             interpreted relative to the repo root.  The file does
+ *             not have to exist, but if it does not, then it will be
+ *             treated as a plain file (not a directory).
+ * @param name The name of the attribute to look up.
+ * @return 0 or an error code.
+ */
+GIT_EXTERN(int) git_attr_get(
+	const char **value_out,
+	git_repository *repo,
+	uint32_t flags,
+	const char *path,
+	const char *name);
+
+/**
+ * Look up the value of one git attribute for path with extended options.
+ *
+ * @param value_out Output of the value of the attribute.  Use the GIT_ATTR_...
+ *             macros to test for TRUE, FALSE, UNSPECIFIED, etc. or just
+ *             use the string value for attributes set to a value.  You
+ *             should NOT modify or free this value.
+ * @param repo The repository containing the path.
+ * @param opts The `git_attr_options` to use when querying these attributes.
+ * @param path The path to check for attributes.  Relative paths are
+ *             interpreted relative to the repo root.  The file does
+ *             not have to exist, but if it does not, then it will be
+ *             treated as a plain file (not a directory).
+ * @param name The name of the attribute to look up.
+ * @return 0 or an error code.
+ */
+GIT_EXTERN(int) git_attr_get_ext(
+	const char **value_out,
+	git_repository *repo,
+	git_attr_options *opts,
+	const char *path,
+	const char *name);
+
+/**
+ * Look up a list of git attributes for path.
+ *
+ * Use this if you have a known list of attributes that you want to
+ * look up in a single call.  This is somewhat more efficient than
+ * calling `git_attr_get()` multiple times.
+ *
+ * For example, you might write:
+ *
+ *     const char *attrs[] = { "crlf", "diff", "foo" };
+ *     const char **values[3];
+ *     git_attr_get_many(values, repo, 0, "my/fun/file.c", 3, attrs);
+ *
+ * Then you could loop through the 3 values to get the settings for
+ * the three attributes you asked about.
+ *
+ * @param values_out An array of num_attr entries that will have string
+ *             pointers written into it for the values of the attributes.
+ *             You should not modify or free the values that are written
+ *             into this array (although of course, you should free the
+ *             array itself if you allocated it).
+ * @param repo The repository containing the path.
+ * @param flags A combination of GIT_ATTR_CHECK... flags.
+ * @param path The path inside the repo to check attributes.  This
+ *             does not have to exist, but if it does not, then
+ *             it will be treated as a plain file (i.e. not a directory).
+ * @param num_attr The number of attributes being looked up
+ * @param names An array of num_attr strings containing attribute names.
+ * @return 0 or an error code.
+ */
+GIT_EXTERN(int) git_attr_get_many(
+	const char **values_out,
+	git_repository *repo,
+	uint32_t flags,
+	const char *path,
+	size_t num_attr,
+	const char **names);
+
+/**
+ * Look up a list of git attributes for path with extended options.
+ *
+ * @param values_out An array of num_attr entries that will have string
+ *             pointers written into it for the values of the attributes.
+ *             You should not modify or free the values that are written
+ *             into this array (although of course, you should free the
+ *             array itself if you allocated it).
+ * @param repo The repository containing the path.
+ * @param opts The `git_attr_options` to use when querying these attributes.
+ * @param path The path inside the repo to check attributes.  This
+ *             does not have to exist, but if it does not, then
+ *             it will be treated as a plain file (i.e. not a directory).
+ * @param num_attr The number of attributes being looked up
+ * @param names An array of num_attr strings containing attribute names.
+ * @return 0 or an error code.
+ */
+GIT_EXTERN(int) git_attr_get_many_ext(
+	const char **values_out,
+	git_repository *repo,
+	git_attr_options *opts,
+	const char *path,
+	size_t num_attr,
+	const char **names);
+
+/**
+ * The callback used with git_attr_foreach.
+ *
+ * This callback will be invoked only once per attribute name, even if there
+ * are multiple rules for a given file. The highest priority rule will be
+ * used.
+ *
+ * @see git_attr_foreach.
+ *
+ * @param name The attribute name.
+ * @param value The attribute value. May be NULL if the attribute is explicitly
+ *              set to UNSPECIFIED using the '!' sign.
+ * @param payload A user-specified pointer.
+ * @return 0 to continue looping, non-zero to stop. This value will be returned
+ *         from git_attr_foreach.
+ */
+typedef int GIT_CALLBACK(git_attr_foreach_cb)(const char *name, const char *value, void *payload);
+
+/**
+ * Loop over all the git attributes for a path.
+ *
+ * @param repo The repository containing the path.
+ * @param flags A combination of GIT_ATTR_CHECK... flags.
+ * @param path Path inside the repo to check attributes.  This does not have
+ *             to exist, but if it does not, then it will be treated as a
+ *             plain file (i.e. not a directory).
+ * @param callback Function to invoke on each attribute name and value.
+ *                 See git_attr_foreach_cb.
+ * @param payload Passed on as extra parameter to callback function.
+ * @return 0 on success, non-zero callback return value, or error code
+ */
+GIT_EXTERN(int) git_attr_foreach(
+	git_repository *repo,
+	uint32_t flags,
+	const char *path,
+	git_attr_foreach_cb callback,
+	void *payload);
+
+/**
+ * Loop over all the git attributes for a path with extended options.
+ *
+ * @param repo The repository containing the path.
+ * @param opts The `git_attr_options` to use when querying these attributes.
+ * @param path Path inside the repo to check attributes.  This does not have
+ *             to exist, but if it does not, then it will be treated as a
+ *             plain file (i.e. not a directory).
+ * @param callback Function to invoke on each attribute name and value.
+ *                 See git_attr_foreach_cb.
+ * @param payload Passed on as extra parameter to callback function.
+ * @return 0 on success, non-zero callback return value, or error code
+ */
+GIT_EXTERN(int) git_attr_foreach_ext(
+	git_repository *repo,
+	git_attr_options *opts,
+	const char *path,
+	git_attr_foreach_cb callback,
+	void *payload);
+
+/**
+ * Flush the gitattributes cache.
+ *
+ * Call this if you have reason to believe that the attributes files on
+ * disk no longer match the cached contents of memory.  This will cause
+ * the attributes files to be reloaded the next time that an attribute
+ * access function is called.
+ *
+ * @param repo The repository containing the gitattributes cache
+ * @return 0 on success, or an error code
+ */
+GIT_EXTERN(int) git_attr_cache_flush(
+	git_repository *repo);
+
+/**
+ * Add a macro definition.
+ *
+ * Macros will automatically be loaded from the top level `.gitattributes`
+ * file of the repository (plus the built-in "binary" macro).  This
+ * function allows you to add others.  For example, to add the default
+ * macro, you would call:
+ *
+ *     git_attr_add_macro(repo, "binary", "-diff -crlf");
+ *
+ * @param repo The repository to add the macro in.
+ * @param name The name of the macro.
+ * @param values The value for the macro.
+ * @return 0 or an error code.
+ */
+GIT_EXTERN(int) git_attr_add_macro(
+	git_repository *repo,
+	const char *name,
+	const char *values);
+
+/** @} */
+GIT_END_DECL
+#endif
+

3rdparty/libgit2/include/git2/blame.h

@@ -0,0 +1,285 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+
+#ifndef INCLUDE_git_blame_h__
+#define INCLUDE_git_blame_h__
+
+#include "common.h"
+#include "oid.h"
+
+/**
+ * @file git2/blame.h
+ * @brief Git blame routines
+ * @defgroup git_blame Git blame routines
+ * @ingroup Git
+ * @{
+ */
+GIT_BEGIN_DECL
+
+/**
+ * Flags for indicating option behavior for git_blame APIs.
+ */
+typedef enum {
+	/** Normal blame, the default */
+	GIT_BLAME_NORMAL = 0,
+
+	/**
+	 * Track lines that have moved within a file (like `git blame -M`).
+	 *
+	 * This is not yet implemented and reserved for future use.
+	 */
+	GIT_BLAME_TRACK_COPIES_SAME_FILE = (1<<0),
+
+	/**
+	 * Track lines that have moved across files in the same commit
+	 * (like `git blame -C`).
+	 *
+	 * This is not yet implemented and reserved for future use.
+	 */
+	GIT_BLAME_TRACK_COPIES_SAME_COMMIT_MOVES = (1<<1),
+
+	/**
+	 * Track lines that have been copied from another file that exists
+	 * in the same commit (like `git blame -CC`).  Implies SAME_FILE.
+	 *
+	 * This is not yet implemented and reserved for future use.
+	 */
+	GIT_BLAME_TRACK_COPIES_SAME_COMMIT_COPIES = (1<<2),
+
+	/**
+	 * Track lines that have been copied from another file that exists in
+	 * *any* commit (like `git blame -CCC`).  Implies SAME_COMMIT_COPIES.
+	 *
+	 * This is not yet implemented and reserved for future use.
+	 */
+	GIT_BLAME_TRACK_COPIES_ANY_COMMIT_COPIES = (1<<3),
+
+	/**
+	 * Restrict the search of commits to those reachable following only
+	 * the first parents.
+	 */
+	GIT_BLAME_FIRST_PARENT = (1<<4),
+
+	/**
+	 * Use mailmap file to map author and committer names and email
+	 * addresses to canonical real names and email addresses. The
+	 * mailmap will be read from the working directory, or HEAD in a
+	 * bare repository.
+	 */
+	GIT_BLAME_USE_MAILMAP = (1<<5),
+
+	/** Ignore whitespace differences */
+	GIT_BLAME_IGNORE_WHITESPACE = (1<<6)
+} git_blame_flag_t;
+
+/**
+ * Blame options structure
+ *
+ * Initialize with `GIT_BLAME_OPTIONS_INIT`. Alternatively, you can
+ * use `git_blame_options_init`.
+ *
+ */
+typedef struct git_blame_options {
+	unsigned int version;
+
+	/** A combination of `git_blame_flag_t` */
+	uint32_t flags;
+
+	/**
+	 * The lower bound on the number of alphanumeric characters that
+	 * must be detected as moving/copying within a file for it to
+	 * associate those lines with the parent commit. The default value
+	 * is 20.
+	 *
+	 * This value only takes effect if any of the `GIT_BLAME_TRACK_COPIES_*`
+	 * flags are specified.
+	 */
+	uint16_t min_match_characters;
+
+	/** The id of the newest commit to consider. The default is HEAD. */
+	git_oid newest_commit;
+
+	/**
+	 * The id of the oldest commit to consider.
+	 * The default is the first commit encountered with a NULL parent.
+	 */
+	git_oid oldest_commit;
+
+	/**
+	 * The first line in the file to blame.
+	 * The default is 1 (line numbers start with 1).
+	 */
+	size_t min_line;
+
+	/**
+	 * The last line in the file to blame.
+	 * The default is the last line of the file.
+	 */
+	size_t max_line;
+} git_blame_options;
+
+#define GIT_BLAME_OPTIONS_VERSION 1
+#define GIT_BLAME_OPTIONS_INIT {GIT_BLAME_OPTIONS_VERSION}
+
+/**
+ * Initialize git_blame_options structure
+ *
+ * Initializes a `git_blame_options` with default values. Equivalent to creating
+ * an instance with GIT_BLAME_OPTIONS_INIT.
+ *
+ * @param opts The `git_blame_options` struct to initialize.
+ * @param version The struct version; pass `GIT_BLAME_OPTIONS_VERSION`.
+ * @return Zero on success; -1 on failure.
+ */
+GIT_EXTERN(int) git_blame_options_init(
+	git_blame_options *opts,
+	unsigned int version);
+
+/**
+ * Structure that represents a blame hunk.
+ */
+typedef struct git_blame_hunk {
+	/**
+	 * The number of lines in this hunk.
+	 */
+	size_t lines_in_hunk;
+
+	/**
+	 * The OID of the commit where this line was last changed.
+	 */
+	git_oid final_commit_id;
+
+	/**
+	 * The 1-based line number where this hunk begins, in the final version
+	 * of the file.
+	 */
+	size_t final_start_line_number;
+
+	/**
+	 * The author of `final_commit_id`. If `GIT_BLAME_USE_MAILMAP` has been
+	 * specified, it will contain the canonical real name and email address.
+	 */
+	git_signature *final_signature;
+
+	/**
+	 * The OID of the commit where this hunk was found.
+	 * This will usually be the same as `final_commit_id`, except when
+	 * `GIT_BLAME_TRACK_COPIES_ANY_COMMIT_COPIES` has been specified.
+	 */
+	git_oid orig_commit_id;
+
+	/**
+	 * The path to the file where this hunk originated, as of the commit
+	 * specified by `orig_commit_id`.
+	 */
+	const char *orig_path;
+
+	/**
+	 * The 1-based line number where this hunk begins in the file named by
+	 * `orig_path` in the commit specified by `orig_commit_id`.
+	 */
+	size_t orig_start_line_number;
+
+	/**
+	 * The author of `orig_commit_id`. If `GIT_BLAME_USE_MAILMAP` has been
+	 * specified, it will contain the canonical real name and email address.
+	 */
+	git_signature *orig_signature;
+
+	/**
+	 * The 1 iff the hunk has been tracked to a boundary commit (the root,
+	 * or the commit specified in git_blame_options.oldest_commit)
+	 */
+	char boundary;
+} git_blame_hunk;
+
+
+/** Opaque structure to hold blame results */
+typedef struct git_blame git_blame;
+
+/**
+ * Gets the number of hunks that exist in the blame structure.
+ *
+ * @param blame The blame structure to query.
+ * @return The number of hunks.
+ */
+GIT_EXTERN(uint32_t) git_blame_get_hunk_count(git_blame *blame);
+
+/**
+ * Gets the blame hunk at the given index.
+ *
+ * @param blame the blame structure to query
+ * @param index index of the hunk to retrieve
+ * @return the hunk at the given index, or NULL on error
+ */
+GIT_EXTERN(const git_blame_hunk*) git_blame_get_hunk_byindex(
+		git_blame *blame,
+		uint32_t index);
+
+/**
+ * Gets the hunk that relates to the given line number in the newest commit.
+ *
+ * @param blame the blame structure to query
+ * @param lineno the (1-based) line number to find a hunk for
+ * @return the hunk that contains the given line, or NULL on error
+ */
+GIT_EXTERN(const git_blame_hunk*) git_blame_get_hunk_byline(
+		git_blame *blame,
+		size_t lineno);
+
+/**
+ * Get the blame for a single file.
+ *
+ * @param out pointer that will receive the blame object
+ * @param repo repository whose history is to be walked
+ * @param path path to file to consider
+ * @param options options for the blame operation.  If NULL, this is treated as
+ *                though GIT_BLAME_OPTIONS_INIT were passed.
+ * @return 0 on success, or an error code. (use git_error_last for information
+ *         about the error.)
+ */
+GIT_EXTERN(int) git_blame_file(
+		git_blame **out,
+		git_repository *repo,
+		const char *path,
+		git_blame_options *options);
+
+
+/**
+ * Get blame data for a file that has been modified in memory. The `reference`
+ * parameter is a pre-calculated blame for the in-odb history of the file. This
+ * means that once a file blame is completed (which can be expensive), updating
+ * the buffer blame is very fast.
+ *
+ * Lines that differ between the buffer and the committed version are marked as
+ * having a zero OID for their final_commit_id.
+ *
+ * @param out pointer that will receive the resulting blame data
+ * @param reference cached blame from the history of the file (usually the output
+ *                  from git_blame_file)
+ * @param buffer the (possibly) modified contents of the file
+ * @param buffer_len number of valid bytes in the buffer
+ * @return 0 on success, or an error code. (use git_error_last for information
+ *         about the error)
+ */
+GIT_EXTERN(int) git_blame_buffer(
+		git_blame **out,
+		git_blame *reference,
+		const char *buffer,
+		size_t buffer_len);
+
+/**
+ * Free memory allocated by git_blame_file or git_blame_buffer.
+ *
+ * @param blame the blame structure to free
+ */
+GIT_EXTERN(void) git_blame_free(git_blame *blame);
+
+/** @} */
+GIT_END_DECL
+#endif
+

3rdparty/libgit2/include/git2/blob.h

@@ -0,0 +1,311 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_blob_h__
+#define INCLUDE_git_blob_h__
+
+#include "common.h"
+#include "types.h"
+#include "oid.h"
+#include "object.h"
+#include "buffer.h"
+
+/**
+ * @file git2/blob.h
+ * @brief Git blob load and write routines
+ * @defgroup git_blob Git blob load and write routines
+ * @ingroup Git
+ * @{
+ */
+GIT_BEGIN_DECL
+
+/**
+ * Lookup a blob object from a repository.
+ *
+ * @param blob pointer to the looked up blob
+ * @param repo the repo to use when locating the blob.
+ * @param id identity of the blob to locate.
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_blob_lookup(git_blob **blob, git_repository *repo, const git_oid *id);
+
+/**
+ * Lookup a blob object from a repository,
+ * given a prefix of its identifier (short id).
+ *
+ * @see git_object_lookup_prefix
+ *
+ * @param blob pointer to the looked up blob
+ * @param repo the repo to use when locating the blob.
+ * @param id identity of the blob to locate.
+ * @param len the length of the short identifier
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_blob_lookup_prefix(git_blob **blob, git_repository *repo, const git_oid *id, size_t len);
+
+/**
+ * Close an open blob
+ *
+ * This is a wrapper around git_object_free()
+ *
+ * IMPORTANT:
+ * It *is* necessary to call this method when you stop
+ * using a blob. Failure to do so will cause a memory leak.
+ *
+ * @param blob the blob to close
+ */
+GIT_EXTERN(void) git_blob_free(git_blob *blob);
+
+/**
+ * Get the id of a blob.
+ *
+ * @param blob a previously loaded blob.
+ * @return SHA1 hash for this blob.
+ */
+GIT_EXTERN(const git_oid *) git_blob_id(const git_blob *blob);
+
+/**
+ * Get the repository that contains the blob.
+ *
+ * @param blob A previously loaded blob.
+ * @return Repository that contains this blob.
+ */
+GIT_EXTERN(git_repository *) git_blob_owner(const git_blob *blob);
+
+/**
+ * Get a read-only buffer with the raw content of a blob.
+ *
+ * A pointer to the raw content of a blob is returned;
+ * this pointer is owned internally by the object and shall
+ * not be free'd. The pointer may be invalidated at a later
+ * time.
+ *
+ * @param blob pointer to the blob
+ * @return the pointer, or NULL on error
+ */
+GIT_EXTERN(const void *) git_blob_rawcontent(const git_blob *blob);
+
+/**
+ * Get the size in bytes of the contents of a blob
+ *
+ * @param blob pointer to the blob
+ * @return size on bytes
+ */
+GIT_EXTERN(git_object_size_t) git_blob_rawsize(const git_blob *blob);
+
+/**
+ * Flags to control the functionality of `git_blob_filter`.
+ */
+typedef enum {
+	/** When set, filters will not be applied to binary files. */
+	GIT_BLOB_FILTER_CHECK_FOR_BINARY = (1 << 0),
+
+	/**
+	 * When set, filters will not load configuration from the
+	 * system-wide `gitattributes` in `/etc` (or system equivalent).
+	 */
+	GIT_BLOB_FILTER_NO_SYSTEM_ATTRIBUTES = (1 << 1),
+
+	/**
+	 * When set, filters will be loaded from a `.gitattributes` file
+	 * in the HEAD commit.
+	 */
+	GIT_BLOB_FILTER_ATTRIBUTES_FROM_HEAD = (1 << 2),
+
+	/**
+	 * When set, filters will be loaded from a `.gitattributes` file
+	 * in the specified commit.
+	 */
+	GIT_BLOB_FILTER_ATTRIBUTES_FROM_COMMIT = (1 << 3)
+} git_blob_filter_flag_t;
+
+/**
+ * The options used when applying filter options to a file.
+ *
+ * Initialize with `GIT_BLOB_FILTER_OPTIONS_INIT`. Alternatively, you can
+ * use `git_blob_filter_options_init`.
+ *
+ */
+typedef struct {
+	int version;
+
+	/** Flags to control the filtering process, see `git_blob_filter_flag_t` above */
+	uint32_t flags;
+
+#ifdef GIT_DEPRECATE_HARD
+	void *reserved;
+#else
+	git_oid *commit_id;
+#endif
+
+	/**
+	 * The commit to load attributes from, when
+	 * `GIT_BLOB_FILTER_ATTRIBUTES_FROM_COMMIT` is specified.
+	 */
+	git_oid attr_commit_id;
+} git_blob_filter_options;
+
+#define GIT_BLOB_FILTER_OPTIONS_VERSION 1
+#define GIT_BLOB_FILTER_OPTIONS_INIT {GIT_BLOB_FILTER_OPTIONS_VERSION, GIT_BLOB_FILTER_CHECK_FOR_BINARY}
+
+/**
+ * Initialize git_blob_filter_options structure
+ *
+ * Initializes a `git_blob_filter_options` with default values. Equivalent
+ * to creating an instance with `GIT_BLOB_FILTER_OPTIONS_INIT`.
+ *
+ * @param opts The `git_blob_filter_options` struct to initialize.
+ * @param version The struct version; pass `GIT_BLOB_FILTER_OPTIONS_VERSION`.
+ * @return Zero on success; -1 on failure.
+ */
+GIT_EXTERN(int) git_blob_filter_options_init(git_blob_filter_options *opts, unsigned int version);
+
+/**
+ * Get a buffer with the filtered content of a blob.
+ *
+ * This applies filters as if the blob was being checked out to the
+ * working directory under the specified filename.  This may apply
+ * CRLF filtering or other types of changes depending on the file
+ * attributes set for the blob and the content detected in it.
+ *
+ * The output is written into a `git_buf` which the caller must free
+ * when done (via `git_buf_dispose`).
+ *
+ * If no filters need to be applied, then the `out` buffer will just
+ * be populated with a pointer to the raw content of the blob.  In
+ * that case, be careful to *not* free the blob until done with the
+ * buffer or copy it into memory you own.
+ *
+ * @param out The git_buf to be filled in
+ * @param blob Pointer to the blob
+ * @param as_path Path used for file attribute lookups, etc.
+ * @param opts Options to use for filtering the blob
+ * @return 0 on success or an error code
+ */
+GIT_EXTERN(int) git_blob_filter(
+	git_buf *out,
+	git_blob *blob,
+	const char *as_path,
+	git_blob_filter_options *opts);
+
+/**
+ * Read a file from the working folder of a repository
+ * and write it to the Object Database as a loose blob
+ *
+ * @param id return the id of the written blob
+ * @param repo repository where the blob will be written.
+ *	this repository cannot be bare
+ * @param relative_path file from which the blob will be created,
+ *	relative to the repository's working dir
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_blob_create_from_workdir(git_oid *id, git_repository *repo, const char *relative_path);
+
+/**
+ * Read a file from the filesystem and write its content
+ * to the Object Database as a loose blob
+ *
+ * @param id return the id of the written blob
+ * @param repo repository where the blob will be written.
+ *	this repository can be bare or not
+ * @param path file from which the blob will be created
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_blob_create_from_disk(git_oid *id, git_repository *repo, const char *path);
+
+/**
+ * Create a stream to write a new blob into the object db
+ *
+ * This function may need to buffer the data on disk and will in
+ * general not be the right choice if you know the size of the data
+ * to write. If you have data in memory, use
+ * `git_blob_create_from_buffer()`. If you do not, but know the size of
+ * the contents (and don't want/need to perform filtering), use
+ * `git_odb_open_wstream()`.
+ *
+ * Don't close this stream yourself but pass it to
+ * `git_blob_create_from_stream_commit()` to commit the write to the
+ * object db and get the object id.
+ *
+ * If the `hintpath` parameter is filled, it will be used to determine
+ * what git filters should be applied to the object before it is written
+ * to the object database.
+ *
+ * @param out the stream into which to write
+ * @param repo Repository where the blob will be written.
+ *        This repository can be bare or not.
+ * @param hintpath If not NULL, will be used to select data filters
+ *        to apply onto the content of the blob to be created.
+ * @return 0 or error code
+ */
+GIT_EXTERN(int) git_blob_create_from_stream(
+	git_writestream **out,
+	git_repository *repo,
+	const char *hintpath);
+
+/**
+ * Close the stream and write the blob to the object db
+ *
+ * The stream will be closed and freed.
+ *
+ * @param out the id of the new blob
+ * @param stream the stream to close
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_blob_create_from_stream_commit(
+	git_oid *out,
+	git_writestream *stream);
+
+/**
+ * Write an in-memory buffer to the ODB as a blob
+ *
+ * @param id return the id of the written blob
+ * @param repo repository where the blob will be written
+ * @param buffer data to be written into the blob
+ * @param len length of the data
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_blob_create_from_buffer(
+	git_oid *id, git_repository *repo, const void *buffer, size_t len);
+
+/**
+ * Determine if the blob content is most certainly binary or not.
+ *
+ * The heuristic used to guess if a file is binary is taken from core git:
+ * Searching for NUL bytes and looking for a reasonable ratio of printable
+ * to non-printable characters among the first 8000 bytes.
+ *
+ * @param blob The blob which content should be analyzed
+ * @return 1 if the content of the blob is detected
+ * as binary; 0 otherwise.
+ */
+GIT_EXTERN(int) git_blob_is_binary(const git_blob *blob);
+
+/**
+ * Determine if the given content is most certainly binary or not;
+ * this is the same mechanism used by `git_blob_is_binary` but only
+ * looking at raw data.
+ *
+ * @param data The blob data which content should be analyzed
+ * @param len The length of the data
+ * @return 1 if the content of the blob is detected
+ * as binary; 0 otherwise.
+ */
+GIT_EXTERN(int) git_blob_data_is_binary(const char *data, size_t len);
+
+/**
+ * Create an in-memory copy of a blob. The copy must be explicitly
+ * free'd or it will leak.
+ *
+ * @param out Pointer to store the copy of the object
+ * @param source Original object to copy
+ * @return 0.
+ */
+GIT_EXTERN(int) git_blob_dup(git_blob **out, git_blob *source);
+
+/** @} */
+GIT_END_DECL
+#endif

3rdparty/libgit2/include/git2/branch.h

@@ -0,0 +1,336 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_branch_h__
+#define INCLUDE_git_branch_h__
+
+#include "common.h"
+#include "oid.h"
+#include "types.h"
+
+/**
+ * @file git2/branch.h
+ * @brief Git branch parsing routines
+ * @defgroup git_branch Git branch management
+ * @ingroup Git
+ * @{
+ */
+GIT_BEGIN_DECL
+
+/**
+ * Create a new branch pointing at a target commit
+ *
+ * A new direct reference will be created pointing to
+ * this target commit. If `force` is true and a reference
+ * already exists with the given name, it'll be replaced.
+ *
+ * The returned reference must be freed by the user.
+ *
+ * The branch name will be checked for validity.
+ * See `git_tag_create()` for rules about valid names.
+ *
+ * @param out Pointer where to store the underlying reference.
+ *
+ * @param repo the repository to create the branch in.
+ *
+ * @param branch_name Name for the branch; this name is
+ * validated for consistency. It should also not conflict with
+ * an already existing branch name.
+ *
+ * @param target Commit to which this branch should point. This object
+ * must belong to the given `repo`.
+ *
+ * @param force Overwrite existing branch.
+ *
+ * @return 0, GIT_EINVALIDSPEC or an error code.
+ * A proper reference is written in the refs/heads namespace
+ * pointing to the provided target commit.
+ */
+GIT_EXTERN(int) git_branch_create(
+	git_reference **out,
+	git_repository *repo,
+	const char *branch_name,
+	const git_commit *target,
+	int force);
+
+/**
+ * Create a new branch pointing at a target commit
+ *
+ * This behaves like `git_branch_create()` but takes an annotated
+ * commit, which lets you specify which extended sha syntax string was
+ * specified by a user, allowing for more exact reflog messages.
+ *
+ * See the documentation for `git_branch_create()`.
+ *
+ * @see git_branch_create
+ */
+GIT_EXTERN(int) git_branch_create_from_annotated(
+	git_reference **ref_out,
+	git_repository *repository,
+	const char *branch_name,
+	const git_annotated_commit *commit,
+	int force);
+
+/**
+ * Delete an existing branch reference.
+ *
+ * Note that if the deletion succeeds, the reference object will not
+ * be valid anymore, and should be freed immediately by the user using
+ * `git_reference_free()`.
+ *
+ * @param branch A valid reference representing a branch
+ * @return 0 on success, or an error code.
+ */
+GIT_EXTERN(int) git_branch_delete(git_reference *branch);
+
+/** Iterator type for branches */
+typedef struct git_branch_iterator git_branch_iterator;
+
+/**
+ * Create an iterator which loops over the requested branches.
+ *
+ * @param out the iterator
+ * @param repo Repository where to find the branches.
+ * @param list_flags Filtering flags for the branch
+ * listing. Valid values are GIT_BRANCH_LOCAL, GIT_BRANCH_REMOTE
+ * or GIT_BRANCH_ALL.
+ *
+ * @return 0 on success  or an error code
+ */
+GIT_EXTERN(int) git_branch_iterator_new(
+	git_branch_iterator **out,
+	git_repository *repo,
+	git_branch_t list_flags);
+
+/**
+ * Retrieve the next branch from the iterator
+ *
+ * @param out the reference
+ * @param out_type the type of branch (local or remote-tracking)
+ * @param iter the branch iterator
+ * @return 0 on success, GIT_ITEROVER if there are no more branches or an error code.
+ */
+GIT_EXTERN(int) git_branch_next(git_reference **out, git_branch_t *out_type, git_branch_iterator *iter);
+
+/**
+ * Free a branch iterator
+ *
+ * @param iter the iterator to free
+ */
+GIT_EXTERN(void) git_branch_iterator_free(git_branch_iterator *iter);
+
+/**
+ * Move/rename an existing local branch reference.
+ *
+ * The new branch name will be checked for validity.
+ * See `git_tag_create()` for rules about valid names.
+ *
+ * Note that if the move succeeds, the old reference object will not
+ * be valid anymore, and should be freed immediately by the user using
+ * `git_reference_free()`.
+ *
+ * @param out New reference object for the updated name.
+ *
+ * @param branch Current underlying reference of the branch.
+ *
+ * @param new_branch_name Target name of the branch once the move
+ * is performed; this name is validated for consistency.
+ *
+ * @param force Overwrite existing branch.
+ *
+ * @return 0 on success, GIT_EINVALIDSPEC or an error code.
+ */
+GIT_EXTERN(int) git_branch_move(
+	git_reference **out,
+	git_reference *branch,
+	const char *new_branch_name,
+	int force);
+
+/**
+ * Lookup a branch by its name in a repository.
+ *
+ * The generated reference must be freed by the user.
+ * The branch name will be checked for validity.
+ *
+ * @see git_tag_create for rules about valid names.
+ *
+ * @param out pointer to the looked-up branch reference
+ * @param repo the repository to look up the branch
+ * @param branch_name Name of the branch to be looked-up;
+ * this name is validated for consistency.
+ * @param branch_type Type of the considered branch. This should
+ * be valued with either GIT_BRANCH_LOCAL or GIT_BRANCH_REMOTE.
+ *
+ * @return 0 on success; GIT_ENOTFOUND when no matching branch
+ * exists, GIT_EINVALIDSPEC, otherwise an error code.
+ */
+GIT_EXTERN(int) git_branch_lookup(
+	git_reference **out,
+	git_repository *repo,
+	const char *branch_name,
+	git_branch_t branch_type);
+
+/**
+ * Get the branch name
+ *
+ * Given a reference object, this will check that it really is a branch (ie.
+ * it lives under "refs/heads/" or "refs/remotes/"), and return the branch part
+ * of it.
+ *
+ * @param out Pointer to the abbreviated reference name.
+ *        Owned by ref, do not free.
+ *
+ * @param ref A reference object, ideally pointing to a branch
+ *
+ * @return 0 on success; GIT_EINVALID if the reference isn't either a local or
+ *         remote branch, otherwise an error code.
+ */
+GIT_EXTERN(int) git_branch_name(
+		const char **out,
+		const git_reference *ref);
+
+/**
+ * Get the upstream of a branch
+ *
+ * Given a reference, this will return a new reference object corresponding
+ * to its remote tracking branch. The reference must be a local branch.
+ *
+ * @see git_branch_upstream_name for details on the resolution.
+ *
+ * @param out Pointer where to store the retrieved reference.
+ * @param branch Current underlying reference of the branch.
+ *
+ * @return 0 on success; GIT_ENOTFOUND when no remote tracking
+ *         reference exists, otherwise an error code.
+ */
+GIT_EXTERN(int) git_branch_upstream(
+	git_reference **out,
+	const git_reference *branch);
+
+/**
+ * Set a branch's upstream branch
+ *
+ * This will update the configuration to set the branch named `branch_name` as the upstream of `branch`.
+ * Pass a NULL name to unset the upstream information.
+ *
+ * @note the actual tracking reference must have been already created for the
+ * operation to succeed.
+ *
+ * @param branch the branch to configure
+ * @param branch_name remote-tracking or local branch to set as upstream.
+ *
+ * @return 0 on success; GIT_ENOTFOUND if there's no branch named `branch_name`
+ *         or an error code
+ */
+GIT_EXTERN(int) git_branch_set_upstream(
+	git_reference *branch,
+	const char *branch_name);
+
+/**
+ * Get the upstream name of a branch
+ *
+ * Given a local branch, this will return its remote-tracking branch information,
+ * as a full reference name, ie. "feature/nice" would become
+ * "refs/remote/origin/feature/nice", depending on that branch's configuration.
+ *
+ * @param out the buffer into which the name will be written.
+ * @param repo the repository where the branches live.
+ * @param refname reference name of the local branch.
+ *
+ * @return 0 on success, GIT_ENOTFOUND when no remote tracking reference exists,
+ *         or an error code.
+ */
+GIT_EXTERN(int) git_branch_upstream_name(
+	git_buf *out,
+	git_repository *repo,
+	const char *refname);
+
+/**
+ * Determine if HEAD points to the given branch
+ *
+ * @param branch A reference to a local branch.
+ *
+ * @return 1 if HEAD points at the branch, 0 if it isn't, or a negative value
+ * 		   as an error code.
+ */
+GIT_EXTERN(int) git_branch_is_head(
+	const git_reference *branch);
+
+/**
+ * Determine if any HEAD points to the current branch
+ *
+ * This will iterate over all known linked repositories (usually in the form of
+ * worktrees) and report whether any HEAD is pointing at the current branch.
+ *
+ * @param branch A reference to a local branch.
+ *
+ * @return 1 if branch is checked out, 0 if it isn't, an error code otherwise.
+ */
+GIT_EXTERN(int) git_branch_is_checked_out(
+	const git_reference *branch);
+
+/**
+ * Find the remote name of a remote-tracking branch
+ *
+ * This will return the name of the remote whose fetch refspec is matching
+ * the given branch. E.g. given a branch "refs/remotes/test/master", it will
+ * extract the "test" part. If refspecs from multiple remotes match,
+ * the function will return GIT_EAMBIGUOUS.
+ *
+ * @param out The buffer into which the name will be written.
+ * @param repo The repository where the branch lives.
+ * @param refname complete name of the remote tracking branch.
+ *
+ * @return 0 on success, GIT_ENOTFOUND when no matching remote was found,
+ *         GIT_EAMBIGUOUS when the branch maps to several remotes,
+ *         otherwise an error code.
+ */
+GIT_EXTERN(int) git_branch_remote_name(
+	git_buf *out,
+	git_repository *repo,
+	const char *refname);
+
+/**
+ * Retrieve the upstream remote of a local branch
+ *
+ * This will return the currently configured "branch.*.remote" for a given
+ * branch. This branch must be local.
+ *
+ * @param buf the buffer into which to write the name
+ * @param repo the repository in which to look
+ * @param refname the full name of the branch
+ * @return 0 or an error code
+ */
+ GIT_EXTERN(int) git_branch_upstream_remote(git_buf *buf, git_repository *repo, const char *refname);
+
+/**
+ * Retrieve the upstream merge of a local branch
+ *
+ * This will return the currently configured "branch.*.merge" for a given
+ * branch. This branch must be local.
+ *
+ * @param buf the buffer into which to write the name
+ * @param repo the repository in which to look
+ * @param refname the full name of the branch
+ * @return 0 or an error code
+ */
+ GIT_EXTERN(int) git_branch_upstream_merge(git_buf *buf, git_repository *repo, const char *refname);
+
+/**
+ * Determine whether a branch name is valid, meaning that (when prefixed
+ * with `refs/heads/`) that it is a valid reference name, and that any
+ * additional branch name restrictions are imposed (eg, it cannot start
+ * with a `-`).
+ *
+ * @param valid output pointer to set with validity of given branch name
+ * @param name a branch name to test
+ * @return 0 on success or an error code
+ */
+GIT_EXTERN(int) git_branch_name_is_valid(int *valid, const char *name);
+
+/** @} */
+GIT_END_DECL
+#endif

3rdparty/libgit2/include/git2/buffer.h

@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_buf_h__
+#define INCLUDE_git_buf_h__
+
+#include "common.h"
+
+/**
+ * @file git2/buffer.h
+ * @brief Buffer export structure
+ *
+ * @ingroup Git
+ * @{
+ */
+GIT_BEGIN_DECL
+
+/**
+ * A data buffer for exporting data from libgit2
+ *
+ * Sometimes libgit2 wants to return an allocated data buffer to the
+ * caller and have the caller take responsibility for freeing that memory.
+ * To make ownership clear in these cases, libgit2 uses  `git_buf` to
+ * return this data.  Callers should use `git_buf_dispose()` to release
+ * the memory when they are done.
+ *
+ * A `git_buf` contains a pointer to a NUL-terminated C string, and
+ * the length of the string (not including the NUL terminator).
+ */
+typedef struct {
+	/**
+	 * The buffer contents.  `ptr` points to the start of the buffer
+	 * being returned.  The buffer's length (in bytes) is specified
+	 * by the `size` member of the structure, and contains a NUL
+	 * terminator at position `(size + 1)`.
+	 */
+	char *ptr;
+
+	/**
+	 * This field is reserved and unused.
+	 */
+	size_t reserved;
+
+	/**
+	 * The length (in bytes) of the buffer pointed to by `ptr`,
+	 * not including a NUL terminator.
+	 */
+	size_t size;
+} git_buf;
+
+/**
+ * Use to initialize a `git_buf` before passing it to a function that
+ * will populate it.
+ */
+#define GIT_BUF_INIT { NULL, 0, 0 }
+
+/**
+ * Free the memory referred to by the git_buf.
+ *
+ * Note that this does not free the `git_buf` itself, just the memory
+ * pointed to by `buffer->ptr`.
+ *
+ * @param buffer The buffer to deallocate
+ */
+GIT_EXTERN(void) git_buf_dispose(git_buf *buffer);
+
+GIT_END_DECL
+
+/** @} */
+
+#endif

3rdparty/libgit2/include/git2/cert.h

@@ -0,0 +1,172 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_cert_h__
+#define INCLUDE_git_cert_h__
+
+#include "common.h"
+#include "types.h"
+
+/**
+ * @file git2/cert.h
+ * @brief Git certificate objects
+ * @defgroup git_cert Certificate objects
+ * @ingroup Git
+ * @{
+ */
+GIT_BEGIN_DECL
+
+/**
+ * Type of host certificate structure that is passed to the check callback
+ */
+typedef enum git_cert_t {
+	/**
+	 * No information about the certificate is available. This may
+	 * happen when using curl.
+	 */
+	GIT_CERT_NONE,
+	/**
+	 * The `data` argument to the callback will be a pointer to
+	 * the DER-encoded data.
+	 */
+	GIT_CERT_X509,
+	/**
+	 * The `data` argument to the callback will be a pointer to a
+	 * `git_cert_hostkey` structure.
+	 */
+	GIT_CERT_HOSTKEY_LIBSSH2,
+	/**
+	 * The `data` argument to the callback will be a pointer to a
+	 * `git_strarray` with `name:content` strings containing
+	 * information about the certificate. This is used when using
+	 * curl.
+	 */
+	GIT_CERT_STRARRAY
+} git_cert_t;
+
+/**
+ * Parent type for `git_cert_hostkey` and `git_cert_x509`.
+ */
+struct git_cert {
+	/**
+	 * Type of certificate. A `GIT_CERT_` value.
+	 */
+	git_cert_t cert_type;
+};
+
+/**
+ * Callback for the user's custom certificate checks.
+ *
+ * @param cert The host certificate
+ * @param valid Whether the libgit2 checks (OpenSSL or WinHTTP) think
+ * this certificate is valid
+ * @param host Hostname of the host libgit2 connected to
+ * @param payload Payload provided by the caller
+ * @return 0 to proceed with the connection, < 0 to fail the connection
+ *         or > 0 to indicate that the callback refused to act and that
+ *         the existing validity determination should be honored
+ */
+typedef int GIT_CALLBACK(git_transport_certificate_check_cb)(git_cert *cert, int valid, const char *host, void *payload);
+
+/**
+ * Type of SSH host fingerprint
+ */
+typedef enum {
+	/** MD5 is available */
+	GIT_CERT_SSH_MD5 = (1 << 0),
+	/** SHA-1 is available */
+	GIT_CERT_SSH_SHA1 = (1 << 1),
+	/** SHA-256 is available */
+	GIT_CERT_SSH_SHA256 = (1 << 2),
+	/** Raw hostkey is available */
+	GIT_CERT_SSH_RAW = (1 << 3)
+} git_cert_ssh_t;
+
+typedef enum {
+	/** The raw key is of an unknown type. */
+	GIT_CERT_SSH_RAW_TYPE_UNKNOWN = 0,
+	/** The raw key is an RSA key. */
+	GIT_CERT_SSH_RAW_TYPE_RSA = 1,
+	/** The raw key is a DSS key. */
+	GIT_CERT_SSH_RAW_TYPE_DSS = 2,
+	/** The raw key is a ECDSA 256 key. */
+	GIT_CERT_SSH_RAW_TYPE_KEY_ECDSA_256 = 3,
+	/** The raw key is a ECDSA 384 key. */
+	GIT_CERT_SSH_RAW_TYPE_KEY_ECDSA_384 = 4,
+	/** The raw key is a ECDSA 521 key. */
+	GIT_CERT_SSH_RAW_TYPE_KEY_ECDSA_521 = 5,
+	/** The raw key is a ED25519 key. */
+	GIT_CERT_SSH_RAW_TYPE_KEY_ED25519 = 6
+} git_cert_ssh_raw_type_t;
+
+/**
+ * Hostkey information taken from libssh2
+ */
+typedef struct {
+	git_cert parent; /**< The parent cert */
+
+	/**
+	 * A bitmask containing the available fields.
+	 */
+	git_cert_ssh_t type;
+
+	/**
+	 * Hostkey hash. If `type` has `GIT_CERT_SSH_MD5` set, this will
+	 * have the MD5 hash of the hostkey.
+	 */
+	unsigned char hash_md5[16];
+
+	/**
+	 * Hostkey hash. If `type` has `GIT_CERT_SSH_SHA1` set, this will
+	 * have the SHA-1 hash of the hostkey.
+	 */
+	unsigned char hash_sha1[20];
+
+	/**
+	 * Hostkey hash. If `type` has `GIT_CERT_SSH_SHA256` set, this will
+	 * have the SHA-256 hash of the hostkey.
+	 */
+	unsigned char hash_sha256[32];
+
+	/**
+	 * Raw hostkey type. If `type` has `GIT_CERT_SSH_RAW` set, this will
+	 * have the type of the raw hostkey.
+	 */
+	git_cert_ssh_raw_type_t raw_type;
+
+	/**
+	 * Pointer to the raw hostkey. If `type` has `GIT_CERT_SSH_RAW` set,
+	 * this will have the raw contents of the hostkey.
+	 */
+	const char *hostkey;
+
+	/**
+	 * Raw hostkey length. If `type` has `GIT_CERT_SSH_RAW` set, this will
+	 * have the length of the raw contents of the hostkey.
+	 */
+	size_t hostkey_len;
+} git_cert_hostkey;
+
+/**
+ * X.509 certificate information
+ */
+typedef struct {
+	git_cert parent; /**< The parent cert */
+
+	/**
+	 * Pointer to the X.509 certificate data
+	 */
+	void *data;
+
+	/**
+	 * Length of the memory block pointed to by `data`.
+	 */
+	size_t len;
+} git_cert_x509;
+
+/** @} */
+GIT_END_DECL
+#endif

3rdparty/libgit2/include/git2/checkout.h

@@ -0,0 +1,417 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_checkout_h__
+#define INCLUDE_git_checkout_h__
+
+#include "common.h"
+#include "types.h"
+#include "diff.h"
+
+/**
+ * @file git2/checkout.h
+ * @brief Git checkout routines
+ * @defgroup git_checkout Git checkout routines
+ * @ingroup Git
+ * @{
+ */
+GIT_BEGIN_DECL
+
+/**
+ * Checkout behavior flags
+ *
+ * In libgit2, checkout is used to update the working directory and index
+ * to match a target tree.  Unlike git checkout, it does not move the HEAD
+ * commit for you - use `git_repository_set_head` or the like to do that.
+ *
+ * Checkout looks at (up to) four things: the "target" tree you want to
+ * check out, the "baseline" tree of what was checked out previously, the
+ * working directory for actual files, and the index for staged changes.
+ *
+ * You give checkout one of three strategies for update:
+ *
+ * - `GIT_CHECKOUT_NONE` is a dry-run strategy that checks for conflicts,
+ *   etc., but doesn't make any actual changes.
+ *
+ * - `GIT_CHECKOUT_FORCE` is at the opposite extreme, taking any action to
+ *   make the working directory match the target (including potentially
+ *   discarding modified files).
+ *
+ * - `GIT_CHECKOUT_SAFE` is between these two options, it will only make
+ *   modifications that will not lose changes.
+ *
+ *                         |  target == baseline   |  target != baseline  |
+ *    ---------------------|-----------------------|----------------------|
+ *     workdir == baseline |       no action       |  create, update, or  |
+ *                         |                       |     delete file      |
+ *    ---------------------|-----------------------|----------------------|
+ *     workdir exists and  |       no action       |   conflict (notify   |
+ *       is != baseline    | notify dirty MODIFIED | and cancel checkout) |
+ *    ---------------------|-----------------------|----------------------|
+ *      workdir missing,   | notify dirty DELETED  |     create file      |
+ *      baseline present   |                       |                      |
+ *    ---------------------|-----------------------|----------------------|
+ *
+ * To emulate `git checkout`, use `GIT_CHECKOUT_SAFE` with a checkout
+ * notification callback (see below) that displays information about dirty
+ * files.  The default behavior will cancel checkout on conflicts.
+ *
+ * To emulate `git checkout-index`, use `GIT_CHECKOUT_SAFE` with a
+ * notification callback that cancels the operation if a dirty-but-existing
+ * file is found in the working directory.  This core git command isn't
+ * quite "force" but is sensitive about some types of changes.
+ *
+ * To emulate `git checkout -f`, use `GIT_CHECKOUT_FORCE`.
+ *
+ *
+ * There are some additional flags to modify the behavior of checkout:
+ *
+ * - GIT_CHECKOUT_ALLOW_CONFLICTS makes SAFE mode apply safe file updates
+ *   even if there are conflicts (instead of cancelling the checkout).
+ *
+ * - GIT_CHECKOUT_REMOVE_UNTRACKED means remove untracked files (i.e. not
+ *   in target, baseline, or index, and not ignored) from the working dir.
+ *
+ * - GIT_CHECKOUT_REMOVE_IGNORED means remove ignored files (that are also
+ *   untracked) from the working directory as well.
+ *
+ * - GIT_CHECKOUT_UPDATE_ONLY means to only update the content of files that
+ *   already exist.  Files will not be created nor deleted.  This just skips
+ *   applying adds, deletes, and typechanges.
+ *
+ * - GIT_CHECKOUT_DONT_UPDATE_INDEX prevents checkout from writing the
+ *   updated files' information to the index.
+ *
+ * - Normally, checkout will reload the index and git attributes from disk
+ *   before any operations.  GIT_CHECKOUT_NO_REFRESH prevents this reload.
+ *
+ * - Unmerged index entries are conflicts.  GIT_CHECKOUT_SKIP_UNMERGED skips
+ *   files with unmerged index entries instead.  GIT_CHECKOUT_USE_OURS and
+ *   GIT_CHECKOUT_USE_THEIRS to proceed with the checkout using either the
+ *   stage 2 ("ours") or stage 3 ("theirs") version of files in the index.
+ *
+ * - GIT_CHECKOUT_DONT_OVERWRITE_IGNORED prevents ignored files from being
+ *   overwritten.  Normally, files that are ignored in the working directory
+ *   are not considered "precious" and may be overwritten if the checkout
+ *   target contains that file.
+ *
+ * - GIT_CHECKOUT_DONT_REMOVE_EXISTING prevents checkout from removing
+ *   files or folders that fold to the same name on case insensitive
+ *   filesystems.  This can cause files to retain their existing names
+ *   and write through existing symbolic links.
+ */
+typedef enum {
+	GIT_CHECKOUT_NONE = 0, /**< default is a dry run, no actual updates */
+
+	/**
+	 * Allow safe updates that cannot overwrite uncommitted data.
+	 * If the uncommitted changes don't conflict with the checked out files,
+	 * the checkout will still proceed, leaving the changes intact.
+	 *
+	 * Mutually exclusive with GIT_CHECKOUT_FORCE.
+	 * GIT_CHECKOUT_FORCE takes precedence over GIT_CHECKOUT_SAFE.
+	 */
+	GIT_CHECKOUT_SAFE = (1u << 0),
+
+	/**
+	 * Allow all updates to force working directory to look like index.
+	 *
+	 * Mutually exclusive with GIT_CHECKOUT_SAFE.
+	 * GIT_CHECKOUT_FORCE takes precedence over GIT_CHECKOUT_SAFE.
+	 */
+	GIT_CHECKOUT_FORCE = (1u << 1),
+
+
+	/** Allow checkout to recreate missing files */
+	GIT_CHECKOUT_RECREATE_MISSING = (1u << 2),
+
+	/** Allow checkout to make safe updates even if conflicts are found */
+	GIT_CHECKOUT_ALLOW_CONFLICTS = (1u << 4),
+
+	/** Remove untracked files not in index (that are not ignored) */
+	GIT_CHECKOUT_REMOVE_UNTRACKED = (1u << 5),
+
+	/** Remove ignored files not in index */
+	GIT_CHECKOUT_REMOVE_IGNORED = (1u << 6),
+
+	/** Only update existing files, don't create new ones */
+	GIT_CHECKOUT_UPDATE_ONLY = (1u << 7),
+
+	/**
+	 * Normally checkout updates index entries as it goes; this stops that.
+	 * Implies `GIT_CHECKOUT_DONT_WRITE_INDEX`.
+	 */
+	GIT_CHECKOUT_DONT_UPDATE_INDEX = (1u << 8),
+
+	/** Don't refresh index/config/etc before doing checkout */
+	GIT_CHECKOUT_NO_REFRESH = (1u << 9),
+
+	/** Allow checkout to skip unmerged files */
+	GIT_CHECKOUT_SKIP_UNMERGED = (1u << 10),
+	/** For unmerged files, checkout stage 2 from index */
+	GIT_CHECKOUT_USE_OURS = (1u << 11),
+	/** For unmerged files, checkout stage 3 from index */
+	GIT_CHECKOUT_USE_THEIRS = (1u << 12),
+
+	/** Treat pathspec as simple list of exact match file paths */
+	GIT_CHECKOUT_DISABLE_PATHSPEC_MATCH = (1u << 13),
+
+	/** Ignore directories in use, they will be left empty */
+	GIT_CHECKOUT_SKIP_LOCKED_DIRECTORIES = (1u << 18),
+
+	/** Don't overwrite ignored files that exist in the checkout target */
+	GIT_CHECKOUT_DONT_OVERWRITE_IGNORED = (1u << 19),
+
+	/** Write normal merge files for conflicts */
+	GIT_CHECKOUT_CONFLICT_STYLE_MERGE = (1u << 20),
+
+	/** Include common ancestor data in diff3 format files for conflicts */
+	GIT_CHECKOUT_CONFLICT_STYLE_DIFF3 = (1u << 21),
+
+	/** Don't overwrite existing files or folders */
+	GIT_CHECKOUT_DONT_REMOVE_EXISTING = (1u << 22),
+
+	/** Normally checkout writes the index upon completion; this prevents that. */
+	GIT_CHECKOUT_DONT_WRITE_INDEX = (1u << 23),
+
+	/**
+	 * Show what would be done by a checkout.  Stop after sending
+	 * notifications; don't update the working directory or index.
+	 */
+	GIT_CHECKOUT_DRY_RUN = (1u << 24),
+
+	/** Include common ancestor data in zdiff3 format for conflicts */
+	GIT_CHECKOUT_CONFLICT_STYLE_ZDIFF3 = (1u << 25),
+
+	/**
+	 * THE FOLLOWING OPTIONS ARE NOT YET IMPLEMENTED
+	 */
+
+	/** Recursively checkout submodules with same options (NOT IMPLEMENTED) */
+	GIT_CHECKOUT_UPDATE_SUBMODULES = (1u << 16),
+	/** Recursively checkout submodules if HEAD moved in super repo (NOT IMPLEMENTED) */
+	GIT_CHECKOUT_UPDATE_SUBMODULES_IF_CHANGED = (1u << 17)
+
+} git_checkout_strategy_t;
+
+/**
+ * Checkout notification flags
+ *
+ * Checkout will invoke an options notification callback (`notify_cb`) for
+ * certain cases - you pick which ones via `notify_flags`:
+ *
+ * Returning a non-zero value from this callback will cancel the checkout.
+ * The non-zero return value will be propagated back and returned by the
+ * git_checkout_... call.
+ *
+ * Notification callbacks are made prior to modifying any files on disk,
+ * so canceling on any notification will still happen prior to any files
+ * being modified.
+ */
+typedef enum {
+	GIT_CHECKOUT_NOTIFY_NONE      = 0,
+
+	/**
+	 * Invokes checkout on conflicting paths.
+	 */
+	GIT_CHECKOUT_NOTIFY_CONFLICT  = (1u << 0),
+
+	/**
+	 * Notifies about "dirty" files, i.e. those that do not need an update
+	 * but no longer match the baseline.  Core git displays these files when
+	 * checkout runs, but won't stop the checkout.
+	 */
+	GIT_CHECKOUT_NOTIFY_DIRTY     = (1u << 1),
+
+	/**
+	 * Sends notification for any file changed.
+	 */
+	GIT_CHECKOUT_NOTIFY_UPDATED   = (1u << 2),
+
+	/**
+	 * Notifies about untracked files.
+	 */
+	GIT_CHECKOUT_NOTIFY_UNTRACKED = (1u << 3),
+
+	/**
+	 * Notifies about ignored files.
+	 */
+	GIT_CHECKOUT_NOTIFY_IGNORED   = (1u << 4),
+
+	GIT_CHECKOUT_NOTIFY_ALL       = 0x0FFFFu
+} git_checkout_notify_t;
+
+/** Checkout performance-reporting structure */
+typedef struct {
+	size_t mkdir_calls;
+	size_t stat_calls;
+	size_t chmod_calls;
+} git_checkout_perfdata;
+
+/** Checkout notification callback function */
+typedef int GIT_CALLBACK(git_checkout_notify_cb)(
+	git_checkout_notify_t why,
+	const char *path,
+	const git_diff_file *baseline,
+	const git_diff_file *target,
+	const git_diff_file *workdir,
+	void *payload);
+
+/** Checkout progress notification function */
+typedef void GIT_CALLBACK(git_checkout_progress_cb)(
+	const char *path,
+	size_t completed_steps,
+	size_t total_steps,
+	void *payload);
+
+/** Checkout perfdata notification function */
+typedef void GIT_CALLBACK(git_checkout_perfdata_cb)(
+	const git_checkout_perfdata *perfdata,
+	void *payload);
+
+/**
+ * Checkout options structure
+ *
+ * Initialize with `GIT_CHECKOUT_OPTIONS_INIT`. Alternatively, you can
+ * use `git_checkout_options_init`.
+ *
+ */
+typedef struct git_checkout_options {
+	unsigned int version; /**< The version */
+
+	unsigned int checkout_strategy; /**< default will be a safe checkout */
+
+	int disable_filters;    /**< don't apply filters like CRLF conversion */
+	unsigned int dir_mode;  /**< default is 0755 */
+	unsigned int file_mode; /**< default is 0644 or 0755 as dictated by blob */
+	int file_open_flags;    /**< default is O_CREAT | O_TRUNC | O_WRONLY */
+
+	unsigned int notify_flags; /**< see `git_checkout_notify_t` above */
+
+	/**
+	 * Optional callback to get notifications on specific file states.
+	 * @see git_checkout_notify_t
+	 */
+	git_checkout_notify_cb notify_cb;
+
+	/** Payload passed to notify_cb */
+	void *notify_payload;
+
+	/** Optional callback to notify the consumer of checkout progress. */
+	git_checkout_progress_cb progress_cb;
+
+	/** Payload passed to progress_cb */
+	void *progress_payload;
+
+	/**
+	 * A list of wildmatch patterns or paths.
+	 *
+	 * By default, all paths are processed. If you pass an array of wildmatch
+	 * patterns, those will be used to filter which paths should be taken into
+	 * account.
+	 *
+	 * Use GIT_CHECKOUT_DISABLE_PATHSPEC_MATCH to treat as a simple list.
+	 */
+	git_strarray paths;
+
+	/**
+	 * The expected content of the working directory; defaults to HEAD.
+	 *
+	 * If the working directory does not match this baseline information,
+	 * that will produce a checkout conflict.
+	 */
+	git_tree *baseline;
+
+	/**
+	 * Like `baseline` above, though expressed as an index.  This
+	 * option overrides `baseline`.
+	 */
+	git_index *baseline_index;
+
+	const char *target_directory; /**< alternative checkout path to workdir */
+
+	const char *ancestor_label; /**< the name of the common ancestor side of conflicts */
+	const char *our_label; /**< the name of the "our" side of conflicts */
+	const char *their_label; /**< the name of the "their" side of conflicts */
+
+	/** Optional callback to notify the consumer of performance data. */
+	git_checkout_perfdata_cb perfdata_cb;
+
+	/** Payload passed to perfdata_cb */
+	void *perfdata_payload;
+} git_checkout_options;
+
+#define GIT_CHECKOUT_OPTIONS_VERSION 1
+#define GIT_CHECKOUT_OPTIONS_INIT {GIT_CHECKOUT_OPTIONS_VERSION, GIT_CHECKOUT_SAFE}
+
+/**
+ * Initialize git_checkout_options structure
+ *
+ * Initializes a `git_checkout_options` with default values. Equivalent to creating
+ * an instance with GIT_CHECKOUT_OPTIONS_INIT.
+ *
+ * @param opts The `git_checkout_options` struct to initialize.
+ * @param version The struct version; pass `GIT_CHECKOUT_OPTIONS_VERSION`.
+ * @return Zero on success; -1 on failure.
+ */
+GIT_EXTERN(int) git_checkout_options_init(
+	git_checkout_options *opts,
+	unsigned int version);
+
+/**
+ * Updates files in the index and the working tree to match the content of
+ * the commit pointed at by HEAD.
+ *
+ * Note that this is _not_ the correct mechanism used to switch branches;
+ * do not change your `HEAD` and then call this method, that would leave
+ * you with checkout conflicts since your working directory would then
+ * appear to be dirty.  Instead, checkout the target of the branch and
+ * then update `HEAD` using `git_repository_set_head` to point to the
+ * branch you checked out.
+ *
+ * @param repo repository to check out (must be non-bare)
+ * @param opts specifies checkout options (may be NULL)
+ * @return 0 on success, GIT_EUNBORNBRANCH if HEAD points to a non
+ *         existing branch, non-zero value returned by `notify_cb`, or
+ *         other error code < 0 (use git_error_last for error details)
+ */
+GIT_EXTERN(int) git_checkout_head(
+	git_repository *repo,
+	const git_checkout_options *opts);
+
+/**
+ * Updates files in the working tree to match the content of the index.
+ *
+ * @param repo repository into which to check out (must be non-bare)
+ * @param index index to be checked out (or NULL to use repository index)
+ * @param opts specifies checkout options (may be NULL)
+ * @return 0 on success, non-zero return value from `notify_cb`, or error
+ *         code < 0 (use git_error_last for error details)
+ */
+GIT_EXTERN(int) git_checkout_index(
+	git_repository *repo,
+	git_index *index,
+	const git_checkout_options *opts);
+
+/**
+ * Updates files in the index and working tree to match the content of the
+ * tree pointed at by the treeish.
+ *
+ * @param repo repository to check out (must be non-bare)
+ * @param treeish a commit, tag or tree which content will be used to update
+ * the working directory (or NULL to use HEAD)
+ * @param opts specifies checkout options (may be NULL)
+ * @return 0 on success, non-zero return value from `notify_cb`, or error
+ *         code < 0 (use git_error_last for error details)
+ */
+GIT_EXTERN(int) git_checkout_tree(
+	git_repository *repo,
+	const git_object *treeish,
+	const git_checkout_options *opts);
+
+/** @} */
+GIT_END_DECL
+#endif

3rdparty/libgit2/include/git2/cherrypick.h

@@ -0,0 +1,92 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_cherrypick_h__
+#define INCLUDE_git_cherrypick_h__
+
+#include "common.h"
+#include "types.h"
+#include "merge.h"
+
+/**
+ * @file git2/cherrypick.h
+ * @brief Git cherry-pick routines
+ * @defgroup git_cherrypick Git cherry-pick routines
+ * @ingroup Git
+ * @{
+ */
+GIT_BEGIN_DECL
+
+/**
+ * Cherry-pick options
+ */
+typedef struct {
+	unsigned int version;
+
+	/** For merge commits, the "mainline" is treated as the parent. */
+	unsigned int mainline;
+
+	git_merge_options merge_opts; /**< Options for the merging */
+	git_checkout_options checkout_opts; /**< Options for the checkout */
+} git_cherrypick_options;
+
+#define GIT_CHERRYPICK_OPTIONS_VERSION 1
+#define GIT_CHERRYPICK_OPTIONS_INIT {GIT_CHERRYPICK_OPTIONS_VERSION, 0, GIT_MERGE_OPTIONS_INIT, GIT_CHECKOUT_OPTIONS_INIT}
+
+/**
+ * Initialize git_cherrypick_options structure
+ *
+ * Initializes a `git_cherrypick_options` with default values. Equivalent to creating
+ * an instance with GIT_CHERRYPICK_OPTIONS_INIT.
+ *
+ * @param opts The `git_cherrypick_options` struct to initialize.
+ * @param version The struct version; pass `GIT_CHERRYPICK_OPTIONS_VERSION`.
+ * @return Zero on success; -1 on failure.
+ */
+GIT_EXTERN(int) git_cherrypick_options_init(
+	git_cherrypick_options *opts,
+	unsigned int version);
+
+/**
+ * Cherry-picks the given commit against the given "our" commit, producing an
+ * index that reflects the result of the cherry-pick.
+ *
+ * The returned index must be freed explicitly with `git_index_free`.
+ *
+ * @param out pointer to store the index result in
+ * @param repo the repository that contains the given commits
+ * @param cherrypick_commit the commit to cherry-pick
+ * @param our_commit the commit to cherry-pick against (eg, HEAD)
+ * @param mainline the parent of the `cherrypick_commit`, if it is a merge
+ * @param merge_options the merge options (or null for defaults)
+ * @return zero on success, -1 on failure.
+ */
+GIT_EXTERN(int) git_cherrypick_commit(
+	git_index **out,
+	git_repository *repo,
+	git_commit *cherrypick_commit,
+	git_commit *our_commit,
+	unsigned int mainline,
+	const git_merge_options *merge_options);
+
+/**
+ * Cherry-pick the given commit, producing changes in the index and working directory.
+ *
+ * @param repo the repository to cherry-pick
+ * @param commit the commit to cherry-pick
+ * @param cherrypick_options the cherry-pick options (or null for defaults)
+ * @return zero on success, -1 on failure.
+ */
+GIT_EXTERN(int) git_cherrypick(
+	git_repository *repo,
+	git_commit *commit,
+	const git_cherrypick_options *cherrypick_options);
+
+/** @} */
+GIT_END_DECL
+
+#endif
+

3rdparty/libgit2/include/git2/clone.h

@@ -0,0 +1,209 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_clone_h__
+#define INCLUDE_git_clone_h__
+
+#include "common.h"
+#include "types.h"
+#include "indexer.h"
+#include "checkout.h"
+#include "remote.h"
+#include "transport.h"
+
+
+/**
+ * @file git2/clone.h
+ * @brief Git cloning routines
+ * @defgroup git_clone Git cloning routines
+ * @ingroup Git
+ * @{
+ */
+GIT_BEGIN_DECL
+
+/**
+ * Options for bypassing the git-aware transport on clone. Bypassing
+ * it means that instead of a fetch, libgit2 will copy the object
+ * database directory instead of figuring out what it needs, which is
+ * faster. If possible, it will hardlink the files to save space.
+ */
+typedef enum {
+	/**
+	 * Auto-detect (default), libgit2 will bypass the git-aware
+	 * transport for local paths, but use a normal fetch for
+	 * `file://` urls.
+	 */
+	GIT_CLONE_LOCAL_AUTO,
+	/**
+	 * Bypass the git-aware transport even for a `file://` url.
+	 */
+	GIT_CLONE_LOCAL,
+	/**
+	 * Do no bypass the git-aware transport
+	 */
+	GIT_CLONE_NO_LOCAL,
+	/**
+	 * Bypass the git-aware transport, but do not try to use
+	 * hardlinks.
+	 */
+	GIT_CLONE_LOCAL_NO_LINKS
+} git_clone_local_t;
+
+/**
+ * The signature of a function matching git_remote_create, with an additional
+ * void* as a callback payload.
+ *
+ * Callers of git_clone may provide a function matching this signature to override
+ * the remote creation and customization process during a clone operation.
+ *
+ * @param out the resulting remote
+ * @param repo the repository in which to create the remote
+ * @param name the remote's name
+ * @param url the remote's url
+ * @param payload an opaque payload
+ * @return 0, GIT_EINVALIDSPEC, GIT_EEXISTS or an error code
+ */
+typedef int GIT_CALLBACK(git_remote_create_cb)(
+	git_remote **out,
+	git_repository *repo,
+	const char *name,
+	const char *url,
+	void *payload);
+
+/**
+ * The signature of a function matching git_repository_init, with an
+ * additional void * as callback payload.
+ *
+ * Callers of git_clone my provide a function matching this signature
+ * to override the repository creation and customization process
+ * during a clone operation.
+ *
+ * @param out the resulting repository
+ * @param path path in which to create the repository
+ * @param bare whether the repository is bare. This is the value from the clone options
+ * @param payload payload specified by the options
+ * @return 0, or a negative value to indicate error
+ */
+typedef int GIT_CALLBACK(git_repository_create_cb)(
+	git_repository **out,
+	const char *path,
+	int bare,
+	void *payload);
+
+/**
+ * Clone options structure
+ *
+ * Initialize with `GIT_CLONE_OPTIONS_INIT`. Alternatively, you can
+ * use `git_clone_options_init`.
+ *
+ */
+typedef struct git_clone_options {
+	unsigned int version;
+
+	/**
+	 * These options are passed to the checkout step. To disable
+	 * checkout, set the `checkout_strategy` to
+	 * `GIT_CHECKOUT_NONE`.
+	 */
+	git_checkout_options checkout_opts;
+
+	/**
+	 * Options which control the fetch, including callbacks.
+	 *
+	 * The callbacks are used for reporting fetch progress, and for acquiring
+	 * credentials in the event they are needed.
+	 */
+	git_fetch_options fetch_opts;
+
+	/**
+	 * Set to zero (false) to create a standard repo, or non-zero
+	 * for a bare repo
+	 */
+	int bare;
+
+	/**
+	 * Whether to use a fetch or copy the object database.
+	 */
+	git_clone_local_t local;
+
+	/**
+	 * The name of the branch to checkout. NULL means use the
+	 * remote's default branch.
+	 */
+	const char *checkout_branch;
+
+	/**
+	 * A callback used to create the new repository into which to
+	 * clone. If NULL, the 'bare' field will be used to determine
+	 * whether to create a bare repository.
+	 */
+	git_repository_create_cb repository_cb;
+
+	/**
+	 * An opaque payload to pass to the git_repository creation callback.
+	 * This parameter is ignored unless repository_cb is non-NULL.
+	 */
+	void *repository_cb_payload;
+
+	/**
+	 * A callback used to create the git_remote, prior to its being
+	 * used to perform the clone operation. See the documentation for
+	 * git_remote_create_cb for details. This parameter may be NULL,
+	 * indicating that git_clone should provide default behavior.
+	 */
+	git_remote_create_cb remote_cb;
+
+	/**
+	 * An opaque payload to pass to the git_remote creation callback.
+	 * This parameter is ignored unless remote_cb is non-NULL.
+	 */
+	void *remote_cb_payload;
+} git_clone_options;
+
+#define GIT_CLONE_OPTIONS_VERSION 1
+#define GIT_CLONE_OPTIONS_INIT { GIT_CLONE_OPTIONS_VERSION, \
+	{ GIT_CHECKOUT_OPTIONS_VERSION, GIT_CHECKOUT_SAFE }, \
+	GIT_FETCH_OPTIONS_INIT }
+
+/**
+ * Initialize git_clone_options structure
+ *
+ * Initializes a `git_clone_options` with default values. Equivalent to creating
+ * an instance with GIT_CLONE_OPTIONS_INIT.
+ *
+ * @param opts The `git_clone_options` struct to initialize.
+ * @param version The struct version; pass `GIT_CLONE_OPTIONS_VERSION`.
+ * @return Zero on success; -1 on failure.
+ */
+GIT_EXTERN(int) git_clone_options_init(
+	git_clone_options *opts,
+	unsigned int version);
+
+/**
+ * Clone a remote repository.
+ *
+ * By default this creates its repository and initial remote to match
+ * git's defaults. You can use the options in the callback to
+ * customize how these are created.
+ *
+ * @param out pointer that will receive the resulting repository object
+ * @param url the remote repository to clone
+ * @param local_path local directory to clone to
+ * @param options configuration options for the clone.  If NULL, the
+ *        function works as though GIT_OPTIONS_INIT were passed.
+ * @return 0 on success, any non-zero return value from a callback
+ *         function, or a negative value to indicate an error (use
+ *         `git_error_last` for a detailed error message)
+ */
+GIT_EXTERN(int) git_clone(
+	git_repository **out,
+	const char *url,
+	const char *local_path,
+	const git_clone_options *options);
+
+/** @} */
+GIT_END_DECL
+#endif

3rdparty/libgit2/include/git2/commit.h

@@ -0,0 +1,607 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_commit_h__
+#define INCLUDE_git_commit_h__
+
+#include "common.h"
+#include "types.h"
+#include "oid.h"
+#include "object.h"
+
+/**
+ * @file git2/commit.h
+ * @brief Git commit parsing, formatting routines
+ * @defgroup git_commit Git commit parsing, formatting routines
+ * @ingroup Git
+ * @{
+ */
+GIT_BEGIN_DECL
+
+/**
+ * Lookup a commit object from a repository.
+ *
+ * The returned object should be released with `git_commit_free` when no
+ * longer needed.
+ *
+ * @param commit pointer to the looked up commit
+ * @param repo the repo to use when locating the commit.
+ * @param id identity of the commit to locate. If the object is
+ *		an annotated tag it will be peeled back to the commit.
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_commit_lookup(
+	git_commit **commit, git_repository *repo, const git_oid *id);
+
+/**
+ * Lookup a commit object from a repository, given a prefix of its
+ * identifier (short id).
+ *
+ * The returned object should be released with `git_commit_free` when no
+ * longer needed.
+ *
+ * @see git_object_lookup_prefix
+ *
+ * @param commit pointer to the looked up commit
+ * @param repo the repo to use when locating the commit.
+ * @param id identity of the commit to locate. If the object is
+ *		an annotated tag it will be peeled back to the commit.
+ * @param len the length of the short identifier
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_commit_lookup_prefix(
+	git_commit **commit, git_repository *repo, const git_oid *id, size_t len);
+
+/**
+ * Close an open commit
+ *
+ * This is a wrapper around git_object_free()
+ *
+ * IMPORTANT:
+ * It *is* necessary to call this method when you stop
+ * using a commit. Failure to do so will cause a memory leak.
+ *
+ * @param commit the commit to close
+ */
+
+GIT_EXTERN(void) git_commit_free(git_commit *commit);
+
+/**
+ * Get the id of a commit.
+ *
+ * @param commit a previously loaded commit.
+ * @return object identity for the commit.
+ */
+GIT_EXTERN(const git_oid *) git_commit_id(const git_commit *commit);
+
+/**
+ * Get the repository that contains the commit.
+ *
+ * @param commit A previously loaded commit.
+ * @return Repository that contains this commit.
+ */
+GIT_EXTERN(git_repository *) git_commit_owner(const git_commit *commit);
+
+/**
+ * Get the encoding for the message of a commit,
+ * as a string representing a standard encoding name.
+ *
+ * The encoding may be NULL if the `encoding` header
+ * in the commit is missing; in that case UTF-8 is assumed.
+ *
+ * @param commit a previously loaded commit.
+ * @return NULL, or the encoding
+ */
+GIT_EXTERN(const char *) git_commit_message_encoding(const git_commit *commit);
+
+/**
+ * Get the full message of a commit.
+ *
+ * The returned message will be slightly prettified by removing any
+ * potential leading newlines.
+ *
+ * @param commit a previously loaded commit.
+ * @return the message of a commit
+ */
+GIT_EXTERN(const char *) git_commit_message(const git_commit *commit);
+
+/**
+ * Get the full raw message of a commit.
+ *
+ * @param commit a previously loaded commit.
+ * @return the raw message of a commit
+ */
+GIT_EXTERN(const char *) git_commit_message_raw(const git_commit *commit);
+
+/**
+ * Get the short "summary" of the git commit message.
+ *
+ * The returned message is the summary of the commit, comprising the
+ * first paragraph of the message with whitespace trimmed and squashed.
+ *
+ * @param commit a previously loaded commit.
+ * @return the summary of a commit or NULL on error
+ */
+GIT_EXTERN(const char *) git_commit_summary(git_commit *commit);
+
+/**
+ * Get the long "body" of the git commit message.
+ *
+ * The returned message is the body of the commit, comprising
+ * everything but the first paragraph of the message. Leading and
+ * trailing whitespaces are trimmed.
+ *
+ * @param commit a previously loaded commit.
+ * @return the body of a commit or NULL when no the message only
+ *   consists of a summary
+ */
+GIT_EXTERN(const char *) git_commit_body(git_commit *commit);
+
+/**
+ * Get the commit time (i.e. committer time) of a commit.
+ *
+ * @param commit a previously loaded commit.
+ * @return the time of a commit
+ */
+GIT_EXTERN(git_time_t) git_commit_time(const git_commit *commit);
+
+/**
+ * Get the commit timezone offset (i.e. committer's preferred timezone) of a commit.
+ *
+ * @param commit a previously loaded commit.
+ * @return positive or negative timezone offset, in minutes from UTC
+ */
+GIT_EXTERN(int) git_commit_time_offset(const git_commit *commit);
+
+/**
+ * Get the committer of a commit.
+ *
+ * @param commit a previously loaded commit.
+ * @return the committer of a commit
+ */
+GIT_EXTERN(const git_signature *) git_commit_committer(const git_commit *commit);
+
+/**
+ * Get the author of a commit.
+ *
+ * @param commit a previously loaded commit.
+ * @return the author of a commit
+ */
+GIT_EXTERN(const git_signature *) git_commit_author(const git_commit *commit);
+
+/**
+ * Get the committer of a commit, using the mailmap to map names and email
+ * addresses to canonical real names and email addresses.
+ *
+ * Call `git_signature_free` to free the signature.
+ *
+ * @param out a pointer to store the resolved signature.
+ * @param commit a previously loaded commit.
+ * @param mailmap the mailmap to resolve with. (may be NULL)
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_commit_committer_with_mailmap(
+	git_signature **out, const git_commit *commit, const git_mailmap *mailmap);
+
+/**
+ * Get the author of a commit, using the mailmap to map names and email
+ * addresses to canonical real names and email addresses.
+ *
+ * Call `git_signature_free` to free the signature.
+ *
+ * @param out a pointer to store the resolved signature.
+ * @param commit a previously loaded commit.
+ * @param mailmap the mailmap to resolve with. (may be NULL)
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_commit_author_with_mailmap(
+	git_signature **out, const git_commit *commit, const git_mailmap *mailmap);
+
+/**
+ * Get the full raw text of the commit header.
+ *
+ * @param commit a previously loaded commit
+ * @return the header text of the commit
+ */
+GIT_EXTERN(const char *) git_commit_raw_header(const git_commit *commit);
+
+/**
+ * Get the tree pointed to by a commit.
+ *
+ * @param tree_out pointer where to store the tree object
+ * @param commit a previously loaded commit.
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_commit_tree(git_tree **tree_out, const git_commit *commit);
+
+/**
+ * Get the id of the tree pointed to by a commit. This differs from
+ * `git_commit_tree` in that no attempts are made to fetch an object
+ * from the ODB.
+ *
+ * @param commit a previously loaded commit.
+ * @return the id of tree pointed to by commit.
+ */
+GIT_EXTERN(const git_oid *) git_commit_tree_id(const git_commit *commit);
+
+/**
+ * Get the number of parents of this commit
+ *
+ * @param commit a previously loaded commit.
+ * @return integer of count of parents
+ */
+GIT_EXTERN(unsigned int) git_commit_parentcount(const git_commit *commit);
+
+/**
+ * Get the specified parent of the commit.
+ *
+ * @param out Pointer where to store the parent commit
+ * @param commit a previously loaded commit.
+ * @param n the position of the parent (from 0 to `parentcount`)
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_commit_parent(
+	git_commit **out,
+	const git_commit *commit,
+	unsigned int n);
+
+/**
+ * Get the oid of a specified parent for a commit. This is different from
+ * `git_commit_parent`, which will attempt to load the parent commit from
+ * the ODB.
+ *
+ * @param commit a previously loaded commit.
+ * @param n the position of the parent (from 0 to `parentcount`)
+ * @return the id of the parent, NULL on error.
+ */
+GIT_EXTERN(const git_oid *) git_commit_parent_id(
+	const git_commit *commit,
+	unsigned int n);
+
+/**
+ * Get the commit object that is the <n>th generation ancestor
+ * of the named commit object, following only the first parents.
+ * The returned commit has to be freed by the caller.
+ *
+ * Passing `0` as the generation number returns another instance of the
+ * base commit itself.
+ *
+ * @param ancestor Pointer where to store the ancestor commit
+ * @param commit a previously loaded commit.
+ * @param n the requested generation
+ * @return 0 on success; GIT_ENOTFOUND if no matching ancestor exists
+ * or an error code
+ */
+GIT_EXTERN(int) git_commit_nth_gen_ancestor(
+	git_commit **ancestor,
+	const git_commit *commit,
+	unsigned int n);
+
+/**
+ * Get an arbitrary header field
+ *
+ * @param out the buffer to fill; existing content will be
+ * overwritten
+ * @param commit the commit to look in
+ * @param field the header field to return
+ * @return 0 on succeess, GIT_ENOTFOUND if the field does not exist,
+ * or an error code
+ */
+GIT_EXTERN(int) git_commit_header_field(git_buf *out, const git_commit *commit, const char *field);
+
+/**
+ * Extract the signature from a commit
+ *
+ * If the id is not for a commit, the error class will be
+ * `GIT_ERROR_INVALID`. If the commit does not have a signature, the
+ * error class will be `GIT_ERROR_OBJECT`.
+ *
+ * @param signature the signature block; existing content will be
+ * overwritten
+ * @param signed_data signed data; this is the commit contents minus the signature block;
+ * existing content will be overwritten
+ * @param repo the repository in which the commit exists
+ * @param commit_id the commit from which to extract the data
+ * @param field the name of the header field containing the signature
+ * block; pass `NULL` to extract the default 'gpgsig'
+ * @return 0 on success, GIT_ENOTFOUND if the id is not for a commit
+ * or the commit does not have a signature.
+ */
+GIT_EXTERN(int) git_commit_extract_signature(git_buf *signature, git_buf *signed_data, git_repository *repo, git_oid *commit_id, const char *field);
+
+/**
+ * Create new commit in the repository from a list of `git_object` pointers
+ *
+ * The message will **not** be cleaned up automatically. You can do that
+ * with the `git_message_prettify()` function.
+ *
+ * @param id Pointer in which to store the OID of the newly created commit
+ *
+ * @param repo Repository where to store the commit
+ *
+ * @param update_ref If not NULL, name of the reference that
+ *	will be updated to point to this commit. If the reference
+ *	is not direct, it will be resolved to a direct reference.
+ *	Use "HEAD" to update the HEAD of the current branch and
+ *	make it point to this commit. If the reference doesn't
+ *	exist yet, it will be created. If it does exist, the first
+ *	parent must be the tip of this branch.
+ *
+ * @param author Signature with author and author time of commit
+ *
+ * @param committer Signature with committer and * commit time of commit
+ *
+ * @param message_encoding The encoding for the message in the
+ *  commit, represented with a standard encoding name.
+ *  E.g. "UTF-8". If NULL, no encoding header is written and
+ *  UTF-8 is assumed.
+ *
+ * @param message Full message for this commit
+ *
+ * @param tree An instance of a `git_tree` object that will
+ *  be used as the tree for the commit. This tree object must
+ *  also be owned by the given `repo`.
+ *
+ * @param parent_count Number of parents for this commit
+ *
+ * @param parents Array of `parent_count` pointers to `git_commit`
+ *  objects that will be used as the parents for this commit. This
+ *  array may be NULL if `parent_count` is 0 (root commit). All the
+ *  given commits must be owned by the `repo`.
+ *
+ * @return 0 or an error code
+ *	The created commit will be written to the Object Database and
+ *	the given reference will be updated to point to it
+ */
+GIT_EXTERN(int) git_commit_create(
+	git_oid *id,
+	git_repository *repo,
+	const char *update_ref,
+	const git_signature *author,
+	const git_signature *committer,
+	const char *message_encoding,
+	const char *message,
+	const git_tree *tree,
+	size_t parent_count,
+	git_commit * const parents[]);
+
+/**
+ * Create new commit in the repository using a variable argument list.
+ *
+ * The message will **not** be cleaned up automatically. You can do that
+ * with the `git_message_prettify()` function.
+ *
+ * The parents for the commit are specified as a variable list of pointers
+ * to `const git_commit *`. Note that this is a convenience method which may
+ * not be safe to export for certain languages or compilers
+ *
+ * All other parameters remain the same as `git_commit_create()`.
+ *
+ * @see git_commit_create
+ */
+GIT_EXTERN(int) git_commit_create_v(
+	git_oid *id,
+	git_repository *repo,
+	const char *update_ref,
+	const git_signature *author,
+	const git_signature *committer,
+	const char *message_encoding,
+	const char *message,
+	const git_tree *tree,
+	size_t parent_count,
+	...);
+
+typedef struct {
+	unsigned int version;
+
+	/**
+	 * Flags for creating the commit.
+	 *
+	 * If `allow_empty_commit` is specified, a commit with no changes
+	 * from the prior commit (and "empty" commit) is allowed. Otherwise,
+	 * commit creation will be stopped.
+	 */
+	unsigned int allow_empty_commit : 1;
+
+	/** The commit author, or NULL for the default. */
+	const git_signature *author;
+
+	/** The committer, or NULL for the default. */
+	const git_signature *committer;
+
+	/** Encoding for the commit message; leave NULL for default. */
+	const char *message_encoding;
+} git_commit_create_options;
+
+#define GIT_COMMIT_CREATE_OPTIONS_VERSION 1
+#define GIT_COMMIT_CREATE_OPTIONS_INIT { GIT_COMMIT_CREATE_OPTIONS_VERSION }
+
+/**
+ * Commits the staged changes in the repository; this is a near analog to
+ * `git commit -m message`.
+ *
+ * By default, empty commits are not allowed.
+ *
+ * @param id pointer to store the new commit's object id
+ * @param repo repository to commit changes in
+ * @param message the commit message
+ * @param opts options for creating the commit
+ * @return 0 on success, GIT_EUNCHANGED if there were no changes to commit, or an error code
+ */
+GIT_EXTERN(int) git_commit_create_from_stage(
+	git_oid *id,
+	git_repository *repo,
+	const char *message,
+	const git_commit_create_options *opts);
+
+/**
+ * Amend an existing commit by replacing only non-NULL values.
+ *
+ * This creates a new commit that is exactly the same as the old commit,
+ * except that any non-NULL values will be updated.  The new commit has
+ * the same parents as the old commit.
+ *
+ * The `update_ref` value works as in the regular `git_commit_create()`,
+ * updating the ref to point to the newly rewritten commit.  If you want
+ * to amend a commit that is not currently the tip of the branch and then
+ * rewrite the following commits to reach a ref, pass this as NULL and
+ * update the rest of the commit chain and ref separately.
+ *
+ * Unlike `git_commit_create()`, the `author`, `committer`, `message`,
+ * `message_encoding`, and `tree` parameters can be NULL in which case this
+ * will use the values from the original `commit_to_amend`.
+ *
+ * All parameters have the same meanings as in `git_commit_create()`.
+ *
+ * @see git_commit_create
+ */
+GIT_EXTERN(int) git_commit_amend(
+	git_oid *id,
+	const git_commit *commit_to_amend,
+	const char *update_ref,
+	const git_signature *author,
+	const git_signature *committer,
+	const char *message_encoding,
+	const char *message,
+	const git_tree *tree);
+
+/**
+ * Create a commit and write it into a buffer
+ *
+ * Create a commit as with `git_commit_create()` but instead of
+ * writing it to the objectdb, write the contents of the object into a
+ * buffer.
+ *
+ * @param out the buffer into which to write the commit object content
+ *
+ * @param repo Repository where the referenced tree and parents live
+ *
+ * @param author Signature with author and author time of commit
+ *
+ * @param committer Signature with committer and * commit time of commit
+ *
+ * @param message_encoding The encoding for the message in the
+ *  commit, represented with a standard encoding name.
+ *  E.g. "UTF-8". If NULL, no encoding header is written and
+ *  UTF-8 is assumed.
+ *
+ * @param message Full message for this commit
+ *
+ * @param tree An instance of a `git_tree` object that will
+ *  be used as the tree for the commit. This tree object must
+ *  also be owned by the given `repo`.
+ *
+ * @param parent_count Number of parents for this commit
+ *
+ * @param parents Array of `parent_count` pointers to `git_commit`
+ *  objects that will be used as the parents for this commit. This
+ *  array may be NULL if `parent_count` is 0 (root commit). All the
+ *  given commits must be owned by the `repo`.
+ *
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_commit_create_buffer(
+	git_buf *out,
+	git_repository *repo,
+	const git_signature *author,
+	const git_signature *committer,
+	const char *message_encoding,
+	const char *message,
+	const git_tree *tree,
+	size_t parent_count,
+	git_commit * const parents[]);
+
+/**
+ * Create a commit object from the given buffer and signature
+ *
+ * Given the unsigned commit object's contents, its signature and the
+ * header field in which to store the signature, attach the signature
+ * to the commit and write it into the given repository.
+ *
+ * @param out the resulting commit id
+ * @param repo the repository to create the commit in.
+ * @param commit_content the content of the unsigned commit object
+ * @param signature the signature to add to the commit. Leave `NULL`
+ * to create a commit without adding a signature field.
+ * @param signature_field which header field should contain this
+ * signature. Leave `NULL` for the default of "gpgsig"
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_commit_create_with_signature(
+	git_oid *out,
+	git_repository *repo,
+	const char *commit_content,
+	const char *signature,
+	const char *signature_field);
+
+/**
+ * Create an in-memory copy of a commit. The copy must be explicitly
+ * free'd or it will leak.
+ *
+ * @param out Pointer to store the copy of the commit
+ * @param source Original commit to copy
+ * @return 0
+ */
+GIT_EXTERN(int) git_commit_dup(git_commit **out, git_commit *source);
+
+/**
+ * Commit creation callback: used when a function is going to create
+ * commits (for example, in `git_rebase_commit`) to allow callers to
+ * override the commit creation behavior.  For example, users may
+ * wish to sign commits by providing this information to
+ * `git_commit_create_buffer`, signing that buffer, then calling
+ * `git_commit_create_with_signature`.  The resultant commit id
+ * should be set in the `out` object id parameter.
+ *
+ * @param out pointer that this callback will populate with the object
+ *            id of the commit that is created
+ * @param author the author name and time of the commit
+ * @param committer the committer name and time of the commit
+ * @param message_encoding the encoding of the given message, or NULL
+ *                         to assume UTF8
+ * @param message the commit message
+ * @param tree the tree to be committed
+ * @param parent_count the number of parents for this commit
+ * @param parents the commit parents
+ * @param payload the payload pointer in the rebase options
+ * @return 0 if this callback has created the commit and populated the out
+ *         parameter, GIT_PASSTHROUGH if the callback has not created a
+ *         commit and wants the calling function to create the commit as
+ *         if no callback had been specified, any other value to stop
+ *         and return a failure
+ */
+typedef int (*git_commit_create_cb)(
+	git_oid *out,
+	const git_signature *author,
+	const git_signature *committer,
+	const char *message_encoding,
+	const char *message,
+	const git_tree *tree,
+	size_t parent_count,
+	git_commit * const parents[],
+	void *payload);
+
+/** An array of commits returned from the library */
+typedef struct git_commitarray {
+	git_commit *const *commits;
+	size_t count;
+} git_commitarray;
+
+/**
+ * Free the commits contained in a commit array.  This method should
+ * be called on `git_commitarray` objects that were provided by the
+ * library.  Not doing so will result in a memory leak.
+ *
+ * This does not free the `git_commitarray` itself, since the library
+ * will never allocate that object directly itself.
+ *
+ * @param array The git_commitarray that contains commits to free
+ */
+GIT_EXTERN(void) git_commitarray_dispose(git_commitarray *array);
+
+/** @} */
+GIT_END_DECL
+#endif

3rdparty/libgit2/include/git2/common.h

@@ -0,0 +1,514 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_common_h__
+#define INCLUDE_git_common_h__
+
+#include <time.h>
+#include <stdlib.h>
+
+#ifdef __cplusplus
+# define GIT_BEGIN_DECL extern "C" {
+# define GIT_END_DECL	}
+#else
+ /** Start declarations in C mode */
+# define GIT_BEGIN_DECL /* empty */
+ /** End declarations in C mode */
+# define GIT_END_DECL	/* empty */
+#endif
+
+#if defined(_MSC_VER) && _MSC_VER < 1800
+# include <stdint.h>
+#elif !defined(__CLANG_INTTYPES_H)
+# include <inttypes.h>
+#endif
+
+#ifdef DOCURIUM
+/*
+ * This is so clang's doc parser acknowledges comments on functions
+ * with size_t parameters.
+ */
+typedef size_t size_t;
+#endif
+
+/** Declare a public function exported for application use. */
+#if __GNUC__ >= 4
+# define GIT_EXTERN(type) extern \
+			 __attribute__((visibility("default"))) \
+			 type
+#elif defined(_MSC_VER)
+# define GIT_EXTERN(type) __declspec(dllexport) type __cdecl
+#else
+# define GIT_EXTERN(type) extern type
+#endif
+
+/** Declare a callback function for application use. */
+#if defined(_MSC_VER)
+# define GIT_CALLBACK(name) (__cdecl *name)
+#else
+# define GIT_CALLBACK(name) (*name)
+#endif
+
+/** Declare a function as deprecated. */
+#if defined(__GNUC__)
+# define GIT_DEPRECATED(func) \
+			 __attribute__((deprecated)) \
+			 __attribute__((used)) \
+			 func
+#elif defined(_MSC_VER)
+# define GIT_DEPRECATED(func) __declspec(deprecated) func
+#else
+# define GIT_DEPRECATED(func) func
+#endif
+
+/** Declare a function's takes printf style arguments. */
+#ifdef __GNUC__
+# define GIT_FORMAT_PRINTF(a,b) __attribute__((format (printf, a, b)))
+#else
+# define GIT_FORMAT_PRINTF(a,b) /* empty */
+#endif
+
+#if (defined(_WIN32)) && !defined(__CYGWIN__)
+#define GIT_WIN32 1
+#endif
+
+#ifdef __amigaos4__
+#include <netinet/in.h>
+#endif
+
+/**
+ * @file git2/common.h
+ * @brief Git common platform definitions
+ * @defgroup git_common Git common platform definitions
+ * @ingroup Git
+ * @{
+ */
+
+GIT_BEGIN_DECL
+
+/**
+ * The separator used in path list strings (ie like in the PATH
+ * environment variable). A semi-colon ";" is used on Windows and
+ * AmigaOS, and a colon ":" for all other systems.
+ */
+#if defined(GIT_WIN32) || defined(AMIGA)
+#define GIT_PATH_LIST_SEPARATOR ';'
+#else
+#define GIT_PATH_LIST_SEPARATOR ':'
+#endif
+
+/**
+ * The maximum length of a valid git path.
+ */
+#define GIT_PATH_MAX 4096
+
+/**
+ * Return the version of the libgit2 library
+ * being currently used.
+ *
+ * @param major Store the major version number
+ * @param minor Store the minor version number
+ * @param rev Store the revision (patch) number
+ * @return 0 on success or an error code on failure
+ */
+GIT_EXTERN(int) git_libgit2_version(int *major, int *minor, int *rev);
+
+/**
+ * Return the prerelease state of the libgit2 library currently being
+ * used.  For nightly builds during active development, this will be
+ * "alpha".  Releases may have a "beta" or release candidate ("rc1",
+ * "rc2", etc) prerelease.  For a final release, this function returns
+ * NULL.
+ *
+ * @return the name of the prerelease state or NULL
+ */
+GIT_EXTERN(const char *) git_libgit2_prerelease(void);
+
+/**
+ * Combinations of these values describe the features with which libgit2
+ * was compiled
+ */
+typedef enum {
+  /**
+   * If set, libgit2 was built thread-aware and can be safely used from multiple
+   * threads.
+   */
+	GIT_FEATURE_THREADS	= (1 << 0),
+  /**
+   * If set, libgit2 was built with and linked against a TLS implementation.
+   * Custom TLS streams may still be added by the user to support HTTPS
+   * regardless of this.
+   */
+	GIT_FEATURE_HTTPS	= (1 << 1),
+  /**
+   * If set, libgit2 was built with and linked against libssh2. A custom
+   * transport may still be added by the user to support libssh2 regardless of
+   * this.
+   */
+	GIT_FEATURE_SSH		= (1 << 2),
+  /**
+   * If set, libgit2 was built with support for sub-second resolution in file
+   * modification times.
+   */
+	GIT_FEATURE_NSEC	= (1 << 3)
+} git_feature_t;
+
+/**
+ * Query compile time options for libgit2.
+ *
+ * @return A combination of GIT_FEATURE_* values.
+ *
+ * - GIT_FEATURE_THREADS
+ *   Libgit2 was compiled with thread support. Note that thread support is
+ *   still to be seen as a 'work in progress' - basic object lookups are
+ *   believed to be threadsafe, but other operations may not be.
+ *
+ * - GIT_FEATURE_HTTPS
+ *   Libgit2 supports the https:// protocol. This requires the openssl
+ *   library to be found when compiling libgit2.
+ *
+ * - GIT_FEATURE_SSH
+ *   Libgit2 supports the SSH protocol for network operations. This requires
+ *   the libssh2 library to be found when compiling libgit2
+ *
+ * - GIT_FEATURE_NSEC
+ *   Libgit2 supports the sub-second resolution in file modification times.
+ */
+GIT_EXTERN(int) git_libgit2_features(void);
+
+/**
+ * Global library options
+ *
+ * These are used to select which global option to set or get and are
+ * used in `git_libgit2_opts()`.
+ */
+typedef enum {
+	GIT_OPT_GET_MWINDOW_SIZE,
+	GIT_OPT_SET_MWINDOW_SIZE,
+	GIT_OPT_GET_MWINDOW_MAPPED_LIMIT,
+	GIT_OPT_SET_MWINDOW_MAPPED_LIMIT,
+	GIT_OPT_GET_SEARCH_PATH,
+	GIT_OPT_SET_SEARCH_PATH,
+	GIT_OPT_SET_CACHE_OBJECT_LIMIT,
+	GIT_OPT_SET_CACHE_MAX_SIZE,
+	GIT_OPT_ENABLE_CACHING,
+	GIT_OPT_GET_CACHED_MEMORY,
+	GIT_OPT_GET_TEMPLATE_PATH,
+	GIT_OPT_SET_TEMPLATE_PATH,
+	GIT_OPT_SET_SSL_CERT_LOCATIONS,
+	GIT_OPT_SET_USER_AGENT,
+	GIT_OPT_ENABLE_STRICT_OBJECT_CREATION,
+	GIT_OPT_ENABLE_STRICT_SYMBOLIC_REF_CREATION,
+	GIT_OPT_SET_SSL_CIPHERS,
+	GIT_OPT_GET_USER_AGENT,
+	GIT_OPT_ENABLE_OFS_DELTA,
+	GIT_OPT_ENABLE_FSYNC_GITDIR,
+	GIT_OPT_GET_WINDOWS_SHAREMODE,
+	GIT_OPT_SET_WINDOWS_SHAREMODE,
+	GIT_OPT_ENABLE_STRICT_HASH_VERIFICATION,
+	GIT_OPT_SET_ALLOCATOR,
+	GIT_OPT_ENABLE_UNSAVED_INDEX_SAFETY,
+	GIT_OPT_GET_PACK_MAX_OBJECTS,
+	GIT_OPT_SET_PACK_MAX_OBJECTS,
+	GIT_OPT_DISABLE_PACK_KEEP_FILE_CHECKS,
+	GIT_OPT_ENABLE_HTTP_EXPECT_CONTINUE,
+	GIT_OPT_GET_MWINDOW_FILE_LIMIT,
+	GIT_OPT_SET_MWINDOW_FILE_LIMIT,
+	GIT_OPT_SET_ODB_PACKED_PRIORITY,
+	GIT_OPT_SET_ODB_LOOSE_PRIORITY,
+	GIT_OPT_GET_EXTENSIONS,
+	GIT_OPT_SET_EXTENSIONS,
+	GIT_OPT_GET_OWNER_VALIDATION,
+	GIT_OPT_SET_OWNER_VALIDATION,
+	GIT_OPT_GET_HOMEDIR,
+	GIT_OPT_SET_HOMEDIR,
+	GIT_OPT_SET_SERVER_CONNECT_TIMEOUT,
+	GIT_OPT_GET_SERVER_CONNECT_TIMEOUT,
+	GIT_OPT_SET_SERVER_TIMEOUT,
+	GIT_OPT_GET_SERVER_TIMEOUT
+} git_libgit2_opt_t;
+
+/**
+ * Set or query a library global option
+ *
+ * Available options:
+ *
+ *	* opts(GIT_OPT_GET_MWINDOW_SIZE, size_t *):
+ *
+ *		> Get the maximum mmap window size
+ *
+ *	* opts(GIT_OPT_SET_MWINDOW_SIZE, size_t):
+ *
+ *		> Set the maximum mmap window size
+ *
+ *	* opts(GIT_OPT_GET_MWINDOW_MAPPED_LIMIT, size_t *):
+ *
+ *		> Get the maximum memory that will be mapped in total by the library
+ *
+ *	* opts(GIT_OPT_SET_MWINDOW_MAPPED_LIMIT, size_t):
+ *
+ *		> Set the maximum amount of memory that can be mapped at any time
+ *		> by the library
+ *
+ *	* opts(GIT_OPT_GET_MWINDOW_FILE_LIMIT, size_t *):
+ *
+ *		> Get the maximum number of files that will be mapped at any time by the
+ *		> library
+ *
+ *	* opts(GIT_OPT_SET_MWINDOW_FILE_LIMIT, size_t):
+ *
+ *		> Set the maximum number of files that can be mapped at any time
+ *		> by the library. The default (0) is unlimited.
+ *
+ *	* opts(GIT_OPT_GET_SEARCH_PATH, int level, git_buf *buf)
+ *
+ *		> Get the search path for a given level of config data.  "level" must
+ *		> be one of `GIT_CONFIG_LEVEL_SYSTEM`, `GIT_CONFIG_LEVEL_GLOBAL`,
+ *		> `GIT_CONFIG_LEVEL_XDG`, or `GIT_CONFIG_LEVEL_PROGRAMDATA`.
+ *		> The search path is written to the `out` buffer.
+ *
+ *	* opts(GIT_OPT_SET_SEARCH_PATH, int level, const char *path)
+ *
+ *		> Set the search path for a level of config data.  The search path
+ *		> applied to shared attributes and ignore files, too.
+ *		>
+ *		> - `path` lists directories delimited by GIT_PATH_LIST_SEPARATOR.
+ *		>   Pass NULL to reset to the default (generally based on environment
+ *		>   variables).  Use magic path `$PATH` to include the old value
+ *		>   of the path (if you want to prepend or append, for instance).
+ *		>
+ *		> - `level` must be `GIT_CONFIG_LEVEL_SYSTEM`,
+ *		>   `GIT_CONFIG_LEVEL_GLOBAL`, `GIT_CONFIG_LEVEL_XDG`, or
+ *		>   `GIT_CONFIG_LEVEL_PROGRAMDATA`.
+ *
+ *	* opts(GIT_OPT_SET_CACHE_OBJECT_LIMIT, git_object_t type, size_t size)
+ *
+ *		> Set the maximum data size for the given type of object to be
+ *		> considered eligible for caching in memory.  Setting to value to
+ *		> zero means that that type of object will not be cached.
+ *		> Defaults to 0 for GIT_OBJECT_BLOB (i.e. won't cache blobs) and 4k
+ *		> for GIT_OBJECT_COMMIT, GIT_OBJECT_TREE, and GIT_OBJECT_TAG.
+ *
+ *	* opts(GIT_OPT_SET_CACHE_MAX_SIZE, ssize_t max_storage_bytes)
+ *
+ *		> Set the maximum total data size that will be cached in memory
+ *		> across all repositories before libgit2 starts evicting objects
+ *		> from the cache.  This is a soft limit, in that the library might
+ *		> briefly exceed it, but will start aggressively evicting objects
+ *		> from cache when that happens.  The default cache size is 256MB.
+ *
+ *	* opts(GIT_OPT_ENABLE_CACHING, int enabled)
+ *
+ *		> Enable or disable caching completely.
+ *		>
+ *		> Because caches are repository-specific, disabling the cache
+ *		> cannot immediately clear all cached objects, but each cache will
+ *		> be cleared on the next attempt to update anything in it.
+ *
+ *	* opts(GIT_OPT_GET_CACHED_MEMORY, ssize_t *current, ssize_t *allowed)
+ *
+ *		> Get the current bytes in cache and the maximum that would be
+ *		> allowed in the cache.
+ *
+ *	* opts(GIT_OPT_GET_TEMPLATE_PATH, git_buf *out)
+ *
+ *		> Get the default template path.
+ *		> The path is written to the `out` buffer.
+ *
+ *	* opts(GIT_OPT_SET_TEMPLATE_PATH, const char *path)
+ *
+ *		> Set the default template path.
+ *		>
+ *		> - `path` directory of template.
+ *
+ *	* opts(GIT_OPT_SET_SSL_CERT_LOCATIONS, const char *file, const char *path)
+ *
+ *		> Set the SSL certificate-authority locations.
+ *		>
+ *		> - `file` is the location of a file containing several
+ *		>   certificates concatenated together.
+ *		> - `path` is the location of a directory holding several
+ *		>   certificates, one per file.
+ *		>
+ * 		> Either parameter may be `NULL`, but not both.
+ *
+ *	* opts(GIT_OPT_SET_USER_AGENT, const char *user_agent)
+ *
+ *		> Set the value of the User-Agent header.  This value will be
+ *		> appended to "git/1.0", for compatibility with other git clients.
+ *		>
+ *		> - `user_agent` is the value that will be delivered as the
+ *		>   User-Agent header on HTTP requests.
+ *
+ *	* opts(GIT_OPT_SET_WINDOWS_SHAREMODE, unsigned long value)
+ *
+ *		> Set the share mode used when opening files on Windows.
+ *		> For more information, see the documentation for CreateFile.
+ *		> The default is: FILE_SHARE_READ | FILE_SHARE_WRITE.  This is
+ *		> ignored and unused on non-Windows platforms.
+ *
+ *	* opts(GIT_OPT_GET_WINDOWS_SHAREMODE, unsigned long *value)
+ *
+ *		> Get the share mode used when opening files on Windows.
+ *
+ *	* opts(GIT_OPT_ENABLE_STRICT_OBJECT_CREATION, int enabled)
+ *
+ *		> Enable strict input validation when creating new objects
+ *		> to ensure that all inputs to the new objects are valid.  For
+ *		> example, when this is enabled, the parent(s) and tree inputs
+ *		> will be validated when creating a new commit.  This defaults
+ *		> to enabled.
+ *
+ *	* opts(GIT_OPT_ENABLE_STRICT_SYMBOLIC_REF_CREATION, int enabled)
+ *
+ *		> Validate the target of a symbolic ref when creating it.  For
+ *		> example, `foobar` is not a valid ref, therefore `foobar` is
+ *		> not a valid target for a symbolic ref by default, whereas
+ *		> `refs/heads/foobar` is.  Disabling this bypasses validation
+ *		> so that an arbitrary strings such as `foobar` can be used
+ *		> for a symbolic ref target.  This defaults to enabled.
+ *
+ *	* opts(GIT_OPT_SET_SSL_CIPHERS, const char *ciphers)
+ *
+ *		> Set the SSL ciphers use for HTTPS connections.
+ *		>
+ *		> - `ciphers` is the list of ciphers that are eanbled.
+ *
+ *	* opts(GIT_OPT_GET_USER_AGENT, git_buf *out)
+ *
+ *		> Get the value of the User-Agent header.
+ *		> The User-Agent is written to the `out` buffer.
+ *
+ *	* opts(GIT_OPT_ENABLE_OFS_DELTA, int enabled)
+ *
+ *		> Enable or disable the use of "offset deltas" when creating packfiles,
+ *		> and the negotiation of them when talking to a remote server.
+ *		> Offset deltas store a delta base location as an offset into the
+ *		> packfile from the current location, which provides a shorter encoding
+ *		> and thus smaller resultant packfiles.
+ *		> Packfiles containing offset deltas can still be read.
+ *		> This defaults to enabled.
+ *
+ *	* opts(GIT_OPT_ENABLE_FSYNC_GITDIR, int enabled)
+ *
+ *		> Enable synchronized writes of files in the gitdir using `fsync`
+ *		> (or the platform equivalent) to ensure that new object data
+ *		> is written to permanent storage, not simply cached.  This
+ *		> defaults to disabled.
+ *
+ *	 opts(GIT_OPT_ENABLE_STRICT_HASH_VERIFICATION, int enabled)
+ *
+ *		> Enable strict verification of object hashsums when reading
+ *		> objects from disk. This may impact performance due to an
+ *		> additional checksum calculation on each object. This defaults
+ *		> to enabled.
+ *
+ *	 opts(GIT_OPT_SET_ALLOCATOR, git_allocator *allocator)
+ *
+ *		> Set the memory allocator to a different memory allocator. This
+ *		> allocator will then be used to make all memory allocations for
+ *		> libgit2 operations.  If the given `allocator` is NULL, then the
+ *		> system default will be restored.
+ *
+ *	 opts(GIT_OPT_ENABLE_UNSAVED_INDEX_SAFETY, int enabled)
+ *
+ *		> Ensure that there are no unsaved changes in the index before
+ *		> beginning any operation that reloads the index from disk (eg,
+ *		> checkout).  If there are unsaved changes, the instruction will
+ *		> fail.  (Using the FORCE flag to checkout will still overwrite
+ *		> these changes.)
+ *
+ *	 opts(GIT_OPT_GET_PACK_MAX_OBJECTS, size_t *out)
+ *
+ *		> Get the maximum number of objects libgit2 will allow in a pack
+ *		> file when downloading a pack file from a remote. This can be
+ *		> used to limit maximum memory usage when fetching from an untrusted
+ *		> remote.
+ *
+ *	 opts(GIT_OPT_SET_PACK_MAX_OBJECTS, size_t objects)
+ *
+ *		> Set the maximum number of objects libgit2 will allow in a pack
+ *		> file when downloading a pack file from a remote.
+ *
+ *	 opts(GIT_OPT_DISABLE_PACK_KEEP_FILE_CHECKS, int enabled)
+ *		> This will cause .keep file existence checks to be skipped when
+ *		> accessing packfiles, which can help performance with remote filesystems.
+ *
+ *	 opts(GIT_OPT_ENABLE_HTTP_EXPECT_CONTINUE, int enabled)
+ *		> When connecting to a server using NTLM or Negotiate
+ *		> authentication, use expect/continue when POSTing data.
+ *		> This option is not available on Windows.
+ *
+ *   opts(GIT_OPT_SET_ODB_PACKED_PRIORITY, int priority)
+ *      > Override the default priority of the packed ODB backend which
+ *      > is added when default backends are assigned to a repository
+ *
+ *   opts(GIT_OPT_SET_ODB_LOOSE_PRIORITY, int priority)
+ *      > Override the default priority of the loose ODB backend which
+ *      > is added when default backends are assigned to a repository
+ *
+ *   opts(GIT_OPT_GET_EXTENSIONS, git_strarray *out)
+ *      > Returns the list of git extensions that are supported.  This
+ *      > is the list of built-in extensions supported by libgit2 and
+ *      > custom extensions that have been added with
+ *      > `GIT_OPT_SET_EXTENSIONS`.  Extensions that have been negated
+ *      > will not be returned.  The returned list should be released
+ *      > with `git_strarray_dispose`.
+ *
+ *   opts(GIT_OPT_SET_EXTENSIONS, const char **extensions, size_t len)
+ *      > Set that the given git extensions are supported by the caller.
+ *      > Extensions supported by libgit2 may be negated by prefixing
+ *      > them with a `!`.  For example: setting extensions to
+ *      > { "!noop", "newext" } indicates that the caller does not want
+ *      > to support repositories with the `noop` extension but does want
+ *      > to support repositories with the `newext` extension.
+ *
+ *   opts(GIT_OPT_GET_OWNER_VALIDATION, int *enabled)
+ *      > Gets the owner validation setting for repository
+ *      > directories.
+ *
+ *   opts(GIT_OPT_SET_OWNER_VALIDATION, int enabled)
+ *      > Set that repository directories should be owned by the current
+ *      > user. The default is to validate ownership.
+ *
+ *   opts(GIT_OPT_GET_HOMEDIR, git_buf *out)
+ *      > Gets the current user's home directory, as it will be used
+ *      > for file lookups. The path is written to the `out` buffer.
+ *
+ *   opts(GIT_OPT_SET_HOMEDIR, const char *path)
+ *      > Sets the directory used as the current user's home directory,
+ *      > for file lookups.
+ *      >
+ *      > - `path` directory of home directory.
+ *
+ *   opts(GIT_OPT_GET_SERVER_CONNECT_TIMEOUT, int *timeout)
+ *      > Gets the timeout (in milliseconds) to attempt connections to
+ *      > a remote server.
+ *
+ *   opts(GIT_OPT_SET_SERVER_CONNECT_TIMEOUT, int timeout)
+ *      > Sets the timeout (in milliseconds) to attempt connections to
+ *      > a remote server. Set to 0 to use the system default. Note that
+ *      > this may not be able to be configured longer than the system
+ *      > default, typically 75 seconds.
+ *
+ *   opts(GIT_OPT_GET_SERVER_TIMEOUT, int *timeout)
+ *      > Gets the timeout (in milliseconds) for reading from and writing
+ *      > to a remote server.
+ *
+ *   opts(GIT_OPT_SET_SERVER_TIMEOUT, int timeout)
+ *      > Sets the timeout (in milliseconds) for reading from and writing
+ *      > to a remote server. Set to 0 to use the system default.
+ *
+ * @param option Option key
+ * @param ... value to set the option
+ * @return 0 on success, <0 on failure
+ */
+GIT_EXTERN(int) git_libgit2_opts(int option, ...);
+
+/** @} */
+GIT_END_DECL
+
+#endif

3rdparty/libgit2/include/git2/config.h

@@ -0,0 +1,822 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_config_h__
+#define INCLUDE_git_config_h__
+
+#include "common.h"
+#include "types.h"
+#include "buffer.h"
+
+/**
+ * @file git2/config.h
+ * @brief Git config management routines
+ * @defgroup git_config Git config management routines
+ * @ingroup Git
+ * @{
+ */
+GIT_BEGIN_DECL
+
+/**
+ * Priority level of a config file.
+ *
+ * These priority levels correspond to the natural escalation logic
+ * (from higher to lower) when reading or searching for config entries
+ * in git.git. Meaning that for the same key, the configuration in
+ * the local configuration is preferred over the configuration in
+ * the system configuration file.
+ *
+ * Callers can add their own custom configuration, beginning at the
+ * `GIT_CONFIG_LEVEL_APP` level.
+ *
+ * Writes, by default, occur in the highest priority level backend
+ * that is writable. This ordering can be overridden with
+ * `git_config_set_writeorder`.
+ *
+ * git_config_open_default() and git_repository_config() honor those
+ * priority levels as well.
+ */
+typedef enum {
+	/** System-wide on Windows, for compatibility with portable git */
+	GIT_CONFIG_LEVEL_PROGRAMDATA = 1,
+
+	/** System-wide configuration file; /etc/gitconfig on Linux systems */
+	GIT_CONFIG_LEVEL_SYSTEM = 2,
+
+	/** XDG compatible configuration file; typically ~/.config/git/config */
+	GIT_CONFIG_LEVEL_XDG = 3,
+
+	/** User-specific configuration file (also called Global configuration
+	 * file); typically ~/.gitconfig
+	 */
+	GIT_CONFIG_LEVEL_GLOBAL = 4,
+
+	/** Repository specific configuration file; $WORK_DIR/.git/config on
+	 * non-bare repos
+	 */
+	GIT_CONFIG_LEVEL_LOCAL = 5,
+
+	/** Worktree specific configuration file; $GIT_DIR/config.worktree
+	 */
+	GIT_CONFIG_LEVEL_WORKTREE = 6,
+
+	/** Application specific configuration file; freely defined by applications
+	 */
+	GIT_CONFIG_LEVEL_APP = 7,
+
+	/** Represents the highest level available config file (i.e. the most
+	 * specific config file available that actually is loaded)
+	 */
+	GIT_CONFIG_HIGHEST_LEVEL = -1
+} git_config_level_t;
+
+/**
+ * An entry in a configuration file
+ */
+typedef struct git_config_entry {
+	/** Name of the configuration entry (normalized) */
+	const char *name;
+
+	/** Literal (string) value of the entry */
+	const char *value;
+
+	/** The type of backend that this entry exists in (eg, "file") */
+	const char *backend_type;
+
+	/**
+	 * The path to the origin of this entry. For config files, this is
+	 * the path to the file.
+	 */
+	const char *origin_path;
+
+	/** Depth of includes where this variable was found */
+	unsigned int include_depth;
+
+	/** Configuration level for the file this was found in */
+	git_config_level_t level;
+
+	/**
+	 * Free function for this entry; for internal purposes. Callers
+	 * should call `git_config_entry_free` to free data.
+	 */
+	void GIT_CALLBACK(free)(struct git_config_entry *entry);
+} git_config_entry;
+
+/**
+ * Free a config entry
+ *
+ * @param entry The entry to free.
+ */
+GIT_EXTERN(void) git_config_entry_free(git_config_entry *entry);
+
+/**
+ * A config enumeration callback
+ *
+ * @param entry the entry currently being enumerated
+ * @param payload a user-specified pointer
+ * @return non-zero to terminate the iteration.
+ */
+typedef int GIT_CALLBACK(git_config_foreach_cb)(const git_config_entry *entry, void *payload);
+
+/**
+ * An opaque structure for a configuration iterator
+ */
+typedef struct git_config_iterator git_config_iterator;
+
+/**
+ * Config var type
+ */
+typedef enum {
+	GIT_CONFIGMAP_FALSE = 0,
+	GIT_CONFIGMAP_TRUE = 1,
+	GIT_CONFIGMAP_INT32,
+	GIT_CONFIGMAP_STRING
+} git_configmap_t;
+
+/**
+ * Mapping from config variables to values.
+ */
+typedef struct {
+	git_configmap_t type;
+	const char *str_match;
+	int map_value;
+} git_configmap;
+
+/**
+ * Locate the path to the global configuration file
+ *
+ * The user or global configuration file is usually
+ * located in `$HOME/.gitconfig`.
+ *
+ * This method will try to guess the full path to that
+ * file, if the file exists. The returned path
+ * may be used on any `git_config` call to load the
+ * global configuration file.
+ *
+ * This method will not guess the path to the xdg compatible
+ * config file (`.config/git/config`).
+ *
+ * @param out Pointer to a user-allocated git_buf in which to store the path
+ * @return 0 if a global configuration file has been found. Its path will be stored in `out`.
+ */
+GIT_EXTERN(int) git_config_find_global(git_buf *out);
+
+/**
+ * Locate the path to the global xdg compatible configuration file
+ *
+ * The xdg compatible configuration file is usually
+ * located in `$HOME/.config/git/config`.
+ *
+ * This method will try to guess the full path to that
+ * file, if the file exists. The returned path
+ * may be used on any `git_config` call to load the
+ * xdg compatible configuration file.
+ *
+ * @param out Pointer to a user-allocated git_buf in which to store the path
+ * @return 0 if a xdg compatible configuration file has been
+ *	found. Its path will be stored in `out`.
+ */
+GIT_EXTERN(int) git_config_find_xdg(git_buf *out);
+
+/**
+ * Locate the path to the system configuration file
+ *
+ * If `/etc/gitconfig` doesn't exist, it will look for
+ * `%PROGRAMFILES%\Git\etc\gitconfig`.
+ *
+ * @param out Pointer to a user-allocated git_buf in which to store the path
+ * @return 0 if a system configuration file has been
+ *	found. Its path will be stored in `out`.
+ */
+GIT_EXTERN(int) git_config_find_system(git_buf *out);
+
+/**
+ * Locate the path to the configuration file in ProgramData
+ *
+ * Look for the file in `%PROGRAMDATA%\Git\config` used by portable git.
+ *
+ * @param out Pointer to a user-allocated git_buf in which to store the path
+ * @return 0 if a ProgramData configuration file has been
+ *	found. Its path will be stored in `out`.
+ */
+GIT_EXTERN(int) git_config_find_programdata(git_buf *out);
+
+/**
+ * Open the global, XDG and system configuration files
+ *
+ * Utility wrapper that finds the global, XDG and system configuration files
+ * and opens them into a single prioritized config object that can be
+ * used when accessing default config data outside a repository.
+ *
+ * @param out Pointer to store the config instance
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_config_open_default(git_config **out);
+
+/**
+ * Allocate a new configuration object
+ *
+ * This object is empty, so you have to add a file to it before you
+ * can do anything with it.
+ *
+ * @param out pointer to the new configuration
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_config_new(git_config **out);
+
+/**
+ * Add an on-disk config file instance to an existing config
+ *
+ * The on-disk file pointed at by `path` will be opened and
+ * parsed; it's expected to be a native Git config file following
+ * the default Git config syntax (see man git-config).
+ *
+ * If the file does not exist, the file will still be added and it
+ * will be created the first time we write to it.
+ *
+ * Note that the configuration object will free the file
+ * automatically.
+ *
+ * Further queries on this config object will access each
+ * of the config file instances in order (instances with
+ * a higher priority level will be accessed first).
+ *
+ * @param cfg the configuration to add the file to
+ * @param path path to the configuration file to add
+ * @param level the priority level of the backend
+ * @param force replace config file at the given priority level
+ * @param repo optional repository to allow parsing of
+ *  conditional includes
+ * @return 0 on success, GIT_EEXISTS when adding more than one file
+ *  for a given priority level (and force_replace set to 0),
+ *  GIT_ENOTFOUND when the file doesn't exist or error code
+ */
+GIT_EXTERN(int) git_config_add_file_ondisk(
+	git_config *cfg,
+	const char *path,
+	git_config_level_t level,
+	const git_repository *repo,
+	int force);
+
+/**
+ * Create a new config instance containing a single on-disk file
+ *
+ * This method is a simple utility wrapper for the following sequence
+ * of calls:
+ *	- git_config_new
+ *	- git_config_add_file_ondisk
+ *
+ * @param out The configuration instance to create
+ * @param path Path to the on-disk file to open
+ * @return 0 on success, or an error code
+ */
+GIT_EXTERN(int) git_config_open_ondisk(git_config **out, const char *path);
+
+/**
+ * Build a single-level focused config object from a multi-level one.
+ *
+ * The returned config object can be used to perform get/set/delete operations
+ * on a single specific level.
+ *
+ * Getting several times the same level from the same parent multi-level config
+ * will return different config instances, but containing the same config_file
+ * instance.
+ *
+ * @param out The configuration instance to create
+ * @param parent Multi-level config to search for the given level
+ * @param level Configuration level to search for
+ * @return 0, GIT_ENOTFOUND if the passed level cannot be found in the
+ * multi-level parent config, or an error code
+ */
+GIT_EXTERN(int) git_config_open_level(
+	git_config **out,
+	const git_config *parent,
+	git_config_level_t level);
+
+/**
+ * Open the global/XDG configuration file according to git's rules
+ *
+ * Git allows you to store your global configuration at
+ * `$HOME/.gitconfig` or `$XDG_CONFIG_HOME/git/config`. For backwards
+ * compatibility, the XDG file shouldn't be used unless the use has
+ * created it explicitly. With this function you'll open the correct
+ * one to write to.
+ *
+ * @param out pointer in which to store the config object
+ * @param config the config object in which to look
+ * @return 0 or an error code.
+ */
+GIT_EXTERN(int) git_config_open_global(git_config **out, git_config *config);
+
+GIT_EXTERN(int) git_config_set_writeorder(
+	git_config *cfg,
+	git_config_level_t *levels,
+	size_t len);
+
+/**
+ * Create a snapshot of the configuration
+ *
+ * Create a snapshot of the current state of a configuration, which
+ * allows you to look into a consistent view of the configuration for
+ * looking up complex values (e.g. a remote, submodule).
+ *
+ * The string returned when querying such a config object is valid
+ * until it is freed.
+ *
+ * @param out pointer in which to store the snapshot config object
+ * @param config configuration to snapshot
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_config_snapshot(git_config **out, git_config *config);
+
+/**
+ * Free the configuration and its associated memory and files
+ *
+ * @param cfg the configuration to free
+ */
+GIT_EXTERN(void) git_config_free(git_config *cfg);
+
+/**
+ * Get the git_config_entry of a config variable.
+ *
+ * Free the git_config_entry after use with `git_config_entry_free()`.
+ *
+ * @param out pointer to the variable git_config_entry
+ * @param cfg where to look for the variable
+ * @param name the variable's name
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_config_get_entry(
+	git_config_entry **out,
+	const git_config *cfg,
+	const char *name);
+
+/**
+ * Get the value of an integer config variable.
+ *
+ * All config files will be looked into, in the order of their
+ * defined level. A higher level means a higher priority. The
+ * first occurrence of the variable will be returned here.
+ *
+ * @param out pointer to the variable where the value should be stored
+ * @param cfg where to look for the variable
+ * @param name the variable's name
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_config_get_int32(int32_t *out, const git_config *cfg, const char *name);
+
+/**
+ * Get the value of a long integer config variable.
+ *
+ * All config files will be looked into, in the order of their
+ * defined level. A higher level means a higher priority. The
+ * first occurrence of the variable will be returned here.
+ *
+ * @param out pointer to the variable where the value should be stored
+ * @param cfg where to look for the variable
+ * @param name the variable's name
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_config_get_int64(int64_t *out, const git_config *cfg, const char *name);
+
+/**
+ * Get the value of a boolean config variable.
+ *
+ * This function uses the usual C convention of 0 being false and
+ * anything else true.
+ *
+ * All config files will be looked into, in the order of their
+ * defined level. A higher level means a higher priority. The
+ * first occurrence of the variable will be returned here.
+ *
+ * @param out pointer to the variable where the value should be stored
+ * @param cfg where to look for the variable
+ * @param name the variable's name
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_config_get_bool(int *out, const git_config *cfg, const char *name);
+
+/**
+ * Get the value of a path config variable.
+ *
+ * A leading '~' will be expanded to the global search path (which
+ * defaults to the user's home directory but can be overridden via
+ * `git_libgit2_opts()`.
+ *
+ * All config files will be looked into, in the order of their
+ * defined level. A higher level means a higher priority. The
+ * first occurrence of the variable will be returned here.
+ *
+ * @param out the buffer in which to store the result
+ * @param cfg where to look for the variable
+ * @param name the variable's name
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_config_get_path(git_buf *out, const git_config *cfg, const char *name);
+
+/**
+ * Get the value of a string config variable.
+ *
+ * This function can only be used on snapshot config objects. The
+ * string is owned by the config and should not be freed by the
+ * user. The pointer will be valid until the config is freed.
+ *
+ * All config files will be looked into, in the order of their
+ * defined level. A higher level means a higher priority. The
+ * first occurrence of the variable will be returned here.
+ *
+ * @param out pointer to the string
+ * @param cfg where to look for the variable
+ * @param name the variable's name
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_config_get_string(const char **out, const git_config *cfg, const char *name);
+
+/**
+ * Get the value of a string config variable.
+ *
+ * The value of the config will be copied into the buffer.
+ *
+ * All config files will be looked into, in the order of their
+ * defined level. A higher level means a higher priority. The
+ * first occurrence of the variable will be returned here.
+ *
+ * @param out buffer in which to store the string
+ * @param cfg where to look for the variable
+ * @param name the variable's name
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_config_get_string_buf(git_buf *out, const git_config *cfg, const char *name);
+
+/**
+ * Get each value of a multivar in a foreach callback
+ *
+ * The callback will be called on each variable found
+ *
+ * The regular expression is applied case-sensitively on the normalized form of
+ * the variable name: the section and variable parts are lower-cased. The
+ * subsection is left unchanged.
+ *
+ * @param cfg where to look for the variable
+ * @param name the variable's name
+ * @param regexp regular expression to filter which variables we're
+ * interested in. Use NULL to indicate all
+ * @param callback the function to be called on each value of the variable
+ * @param payload opaque pointer to pass to the callback
+ * @return 0 or an error code.
+ */
+GIT_EXTERN(int) git_config_get_multivar_foreach(const git_config *cfg, const char *name, const char *regexp, git_config_foreach_cb callback, void *payload);
+
+/**
+ * Get each value of a multivar
+ *
+ * The regular expression is applied case-sensitively on the normalized form of
+ * the variable name: the section and variable parts are lower-cased. The
+ * subsection is left unchanged.
+ *
+ * @param out pointer to store the iterator
+ * @param cfg where to look for the variable
+ * @param name the variable's name
+ * @param regexp regular expression to filter which variables we're
+ * interested in. Use NULL to indicate all
+ * @return 0 or an error code.
+ */
+GIT_EXTERN(int) git_config_multivar_iterator_new(git_config_iterator **out, const git_config *cfg, const char *name, const char *regexp);
+
+/**
+ * Return the current entry and advance the iterator
+ *
+ * The pointers returned by this function are valid until the next call
+ * to `git_config_next` or until the iterator is freed.
+ *
+ * @param entry pointer to store the entry
+ * @param iter the iterator
+ * @return 0 or an error code. GIT_ITEROVER if the iteration has completed
+ */
+GIT_EXTERN(int) git_config_next(git_config_entry **entry, git_config_iterator *iter);
+
+/**
+ * Free a config iterator
+ *
+ * @param iter the iterator to free
+ */
+GIT_EXTERN(void) git_config_iterator_free(git_config_iterator *iter);
+
+/**
+ * Set the value of an integer config variable in the config file
+ * with the highest level (usually the local one).
+ *
+ * @param cfg where to look for the variable
+ * @param name the variable's name
+ * @param value Integer value for the variable
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_config_set_int32(git_config *cfg, const char *name, int32_t value);
+
+/**
+ * Set the value of a long integer config variable in the config file
+ * with the highest level (usually the local one).
+ *
+ * @param cfg where to look for the variable
+ * @param name the variable's name
+ * @param value Long integer value for the variable
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_config_set_int64(git_config *cfg, const char *name, int64_t value);
+
+/**
+ * Set the value of a boolean config variable in the config file
+ * with the highest level (usually the local one).
+ *
+ * @param cfg where to look for the variable
+ * @param name the variable's name
+ * @param value the value to store
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_config_set_bool(git_config *cfg, const char *name, int value);
+
+/**
+ * Set the value of a string config variable in the config file
+ * with the highest level (usually the local one).
+ *
+ * A copy of the string is made and the user is free to use it
+ * afterwards.
+ *
+ * @param cfg where to look for the variable
+ * @param name the variable's name
+ * @param value the string to store.
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_config_set_string(git_config *cfg, const char *name, const char *value);
+
+/**
+ * Set a multivar in the local config file.
+ *
+ * The regular expression is applied case-sensitively on the value.
+ *
+ * @param cfg where to look for the variable
+ * @param name the variable's name
+ * @param regexp a regular expression to indicate which values to replace
+ * @param value the new value.
+ * @return 0 or an error code.
+ */
+GIT_EXTERN(int) git_config_set_multivar(git_config *cfg, const char *name, const char *regexp, const char *value);
+
+/**
+ * Delete a config variable from the config file
+ * with the highest level (usually the local one).
+ *
+ * @param cfg the configuration
+ * @param name the variable to delete
+ * @return 0 or an error code.
+ */
+GIT_EXTERN(int) git_config_delete_entry(git_config *cfg, const char *name);
+
+/**
+ * Deletes one or several entries from a multivar in the local config file.
+ *
+ * The regular expression is applied case-sensitively on the value.
+ *
+ * @param cfg where to look for the variables
+ * @param name the variable's name
+ * @param regexp a regular expression to indicate which values to delete
+ *
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_config_delete_multivar(git_config *cfg, const char *name, const char *regexp);
+
+/**
+ * Perform an operation on each config variable.
+ *
+ * The callback receives the normalized name and value of each variable
+ * in the config backend, and the data pointer passed to this function.
+ * If the callback returns a non-zero value, the function stops iterating
+ * and returns that value to the caller.
+ *
+ * The pointers passed to the callback are only valid as long as the
+ * iteration is ongoing.
+ *
+ * @param cfg where to get the variables from
+ * @param callback the function to call on each variable
+ * @param payload the data to pass to the callback
+ * @return 0 on success, non-zero callback return value, or error code
+ */
+GIT_EXTERN(int) git_config_foreach(
+	const git_config *cfg,
+	git_config_foreach_cb callback,
+	void *payload);
+
+/**
+ * Iterate over all the config variables
+ *
+ * Use `git_config_next` to advance the iteration and
+ * `git_config_iterator_free` when done.
+ *
+ * @param out pointer to store the iterator
+ * @param cfg where to get the variables from
+ * @return 0 or an error code.
+ */
+GIT_EXTERN(int) git_config_iterator_new(git_config_iterator **out, const git_config *cfg);
+
+/**
+ * Iterate over all the config variables whose name matches a pattern
+ *
+ * Use `git_config_next` to advance the iteration and
+ * `git_config_iterator_free` when done.
+ *
+ * The regular expression is applied case-sensitively on the normalized form of
+ * the variable name: the section and variable parts are lower-cased. The
+ * subsection is left unchanged.
+ *
+ * @param out pointer to store the iterator
+ * @param cfg where to ge the variables from
+ * @param regexp regular expression to match the names
+ * @return 0 or an error code.
+ */
+GIT_EXTERN(int) git_config_iterator_glob_new(git_config_iterator **out, const git_config *cfg, const char *regexp);
+
+/**
+ * Perform an operation on each config variable matching a regular expression.
+ *
+ * This behaves like `git_config_foreach` with an additional filter of a
+ * regular expression that filters which config keys are passed to the
+ * callback.
+ *
+ * The regular expression is applied case-sensitively on the normalized form of
+ * the variable name: the section and variable parts are lower-cased. The
+ * subsection is left unchanged.
+ *
+ * The regular expression is applied case-sensitively on the normalized form of
+ * the variable name: the case-insensitive parts are lower-case.
+ *
+ * @param cfg where to get the variables from
+ * @param regexp regular expression to match against config names
+ * @param callback the function to call on each variable
+ * @param payload the data to pass to the callback
+ * @return 0 or the return value of the callback which didn't return 0
+ */
+GIT_EXTERN(int) git_config_foreach_match(
+	const git_config *cfg,
+	const char *regexp,
+	git_config_foreach_cb callback,
+	void *payload);
+
+/**
+ * Query the value of a config variable and return it mapped to
+ * an integer constant.
+ *
+ * This is a helper method to easily map different possible values
+ * to a variable to integer constants that easily identify them.
+ *
+ * A mapping array looks as follows:
+ *
+ *	git_configmap autocrlf_mapping[] = {
+ *		{GIT_CVAR_FALSE, NULL, GIT_AUTO_CRLF_FALSE},
+ *		{GIT_CVAR_TRUE, NULL, GIT_AUTO_CRLF_TRUE},
+ *		{GIT_CVAR_STRING, "input", GIT_AUTO_CRLF_INPUT},
+ *		{GIT_CVAR_STRING, "default", GIT_AUTO_CRLF_DEFAULT}};
+ *
+ * On any "false" value for the variable (e.g. "false", "FALSE", "no"), the
+ * mapping will store `GIT_AUTO_CRLF_FALSE` in the `out` parameter.
+ *
+ * The same thing applies for any "true" value such as "true", "yes" or "1", storing
+ * the `GIT_AUTO_CRLF_TRUE` variable.
+ *
+ * Otherwise, if the value matches the string "input" (with case insensitive comparison),
+ * the given constant will be stored in `out`, and likewise for "default".
+ *
+ * If not a single match can be made to store in `out`, an error code will be
+ * returned.
+ *
+ * @param out place to store the result of the mapping
+ * @param cfg config file to get the variables from
+ * @param name name of the config variable to lookup
+ * @param maps array of `git_configmap` objects specifying the possible mappings
+ * @param map_n number of mapping objects in `maps`
+ * @return 0 on success, error code otherwise
+ */
+GIT_EXTERN(int) git_config_get_mapped(
+	int *out,
+	const git_config *cfg,
+	const char *name,
+	const git_configmap *maps,
+	size_t map_n);
+
+/**
+ * Maps a string value to an integer constant
+ *
+ * @param out place to store the result of the parsing
+ * @param maps array of `git_configmap` objects specifying the possible mappings
+ * @param map_n number of mapping objects in `maps`
+ * @param value value to parse
+ * @return 0 or an error code.
+ */
+GIT_EXTERN(int) git_config_lookup_map_value(
+	int *out,
+	const git_configmap *maps,
+	size_t map_n,
+	const char *value);
+
+/**
+ * Parse a string value as a bool.
+ *
+ * Valid values for true are: 'true', 'yes', 'on', 1 or any
+ *  number different from 0
+ * Valid values for false are: 'false', 'no', 'off', 0
+ *
+ * @param out place to store the result of the parsing
+ * @param value value to parse
+ * @return 0 or an error code.
+ */
+GIT_EXTERN(int) git_config_parse_bool(int *out, const char *value);
+
+/**
+ * Parse a string value as an int32.
+ *
+ * An optional value suffix of 'k', 'm', or 'g' will
+ * cause the value to be multiplied by 1024, 1048576,
+ * or 1073741824 prior to output.
+ *
+ * @param out place to store the result of the parsing
+ * @param value value to parse
+ * @return 0 or an error code.
+ */
+GIT_EXTERN(int) git_config_parse_int32(int32_t *out, const char *value);
+
+/**
+ * Parse a string value as an int64.
+ *
+ * An optional value suffix of 'k', 'm', or 'g' will
+ * cause the value to be multiplied by 1024, 1048576,
+ * or 1073741824 prior to output.
+ *
+ * @param out place to store the result of the parsing
+ * @param value value to parse
+ * @return 0 or an error code.
+ */
+GIT_EXTERN(int) git_config_parse_int64(int64_t *out, const char *value);
+
+/**
+ * Parse a string value as a path.
+ *
+ * A leading '~' will be expanded to the global search path (which
+ * defaults to the user's home directory but can be overridden via
+ * `git_libgit2_opts()`.
+ *
+ * If the value does not begin with a tilde, the input will be
+ * returned.
+ *
+ * @param out placae to store the result of parsing
+ * @param value the path to evaluate
+ * @return 0 or an error code.
+ */
+GIT_EXTERN(int) git_config_parse_path(git_buf *out, const char *value);
+
+/**
+ * Perform an operation on each config variable in a given config backend,
+ * matching a regular expression.
+ *
+ * This behaves like `git_config_foreach_match` except that only config
+ * entries from the given backend entry are enumerated.
+ *
+ * The regular expression is applied case-sensitively on the normalized form of
+ * the variable name: the section and variable parts are lower-cased. The
+ * subsection is left unchanged.
+ *
+ * @param backend where to get the variables from
+ * @param regexp regular expression to match against config names (can be NULL)
+ * @param callback the function to call on each variable
+ * @param payload the data to pass to the callback
+ * @return 0 or an error code.
+ */
+GIT_EXTERN(int) git_config_backend_foreach_match(
+	git_config_backend *backend,
+	const char *regexp,
+	git_config_foreach_cb callback,
+	void *payload);
+
+
+/**
+ * Lock the backend with the highest priority
+ *
+ * Locking disallows anybody else from writing to that backend. Any
+ * updates made after locking will not be visible to a reader until
+ * the file is unlocked.
+ *
+ * You can apply the changes by calling `git_transaction_commit()`
+ * before freeing the transaction. Either of these actions will unlock
+ * the config.
+ *
+ * @param tx the resulting transaction, use this to commit or undo the
+ * changes
+ * @param cfg the configuration in which to lock
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_config_lock(git_transaction **tx, git_config *cfg);
+
+/** @} */
+GIT_END_DECL
+#endif

3rdparty/libgit2/include/git2/cred_helpers.h

@@ -0,0 +1,15 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_cred_helpers_h__
+#define INCLUDE_git_cred_helpers_h__
+
+/* These declarations have moved. */
+#ifndef GIT_DEPRECATE_HARD
+# include "git2/credential_helpers.h"
+#endif
+
+#endif

3rdparty/libgit2/include/git2/credential.h

@@ -0,0 +1,315 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_credential_h__
+#define INCLUDE_git_credential_h__
+
+#include "common.h"
+
+/**
+ * @file git2/credential.h
+ * @brief Git authentication & credential management
+ * @defgroup git_credential Authentication & credential management
+ * @ingroup Git
+ * @{
+ */
+GIT_BEGIN_DECL
+
+/**
+ * Supported credential types
+ *
+ * This represents the various types of authentication methods supported by
+ * the library.
+ */
+typedef enum {
+	/**
+	 * A vanilla user/password request
+	 * @see git_credential_userpass_plaintext_new
+	 */
+	GIT_CREDENTIAL_USERPASS_PLAINTEXT = (1u << 0),
+
+	/**
+	 * An SSH key-based authentication request
+	 * @see git_credential_ssh_key_new
+	 */
+	GIT_CREDENTIAL_SSH_KEY = (1u << 1),
+
+	/**
+	 * An SSH key-based authentication request, with a custom signature
+	 * @see git_credential_ssh_custom_new
+	 */
+	GIT_CREDENTIAL_SSH_CUSTOM = (1u << 2),
+
+	/**
+	 * An NTLM/Negotiate-based authentication request.
+	 * @see git_credential_default
+	 */
+	GIT_CREDENTIAL_DEFAULT = (1u << 3),
+
+	/**
+	 * An SSH interactive authentication request
+	 * @see git_credential_ssh_interactive_new
+	 */
+	GIT_CREDENTIAL_SSH_INTERACTIVE = (1u << 4),
+
+	/**
+	 * Username-only authentication request
+	 *
+	 * Used as a pre-authentication step if the underlying transport
+	 * (eg. SSH, with no username in its URL) does not know which username
+	 * to use.
+	 *
+	 * @see git_credential_username_new
+	 */
+	GIT_CREDENTIAL_USERNAME = (1u << 5),
+
+	/**
+	 * An SSH key-based authentication request
+	 *
+	 * Allows credentials to be read from memory instead of files.
+	 * Note that because of differences in crypto backend support, it might
+	 * not be functional.
+	 *
+	 * @see git_credential_ssh_key_memory_new
+	 */
+	GIT_CREDENTIAL_SSH_MEMORY = (1u << 6)
+} git_credential_t;
+
+/**
+ * The base structure for all credential types
+ */
+typedef struct git_credential git_credential;
+
+typedef struct git_credential_userpass_plaintext git_credential_userpass_plaintext;
+
+/** Username-only credential information */
+typedef struct git_credential_username git_credential_username;
+
+/** A key for NTLM/Kerberos "default" credentials */
+typedef struct git_credential git_credential_default;
+
+/**
+ * A ssh key from disk
+ */
+typedef struct git_credential_ssh_key git_credential_ssh_key;
+
+/**
+ * Keyboard-interactive based ssh authentication
+ */
+typedef struct git_credential_ssh_interactive git_credential_ssh_interactive;
+
+/**
+ * A key with a custom signature function
+ */
+typedef struct git_credential_ssh_custom git_credential_ssh_custom;
+
+/**
+ * Credential acquisition callback.
+ *
+ * This callback is usually involved any time another system might need
+ * authentication. As such, you are expected to provide a valid
+ * git_credential object back, depending on allowed_types (a
+ * git_credential_t bitmask).
+ *
+ * Note that most authentication details are your responsibility - this
+ * callback will be called until the authentication succeeds, or you report
+ * an error. As such, it's easy to get in a loop if you fail to stop providing
+ * the same incorrect credentials.
+ *
+ * @param out The newly created credential object.
+ * @param url The resource for which we are demanding a credential.
+ * @param username_from_url The username that was embedded in a "user\@host"
+ *                          remote url, or NULL if not included.
+ * @param allowed_types A bitmask stating which credential types are OK to return.
+ * @param payload The payload provided when specifying this callback.
+ * @return 0 for success, < 0 to indicate an error, > 0 to indicate
+ *       no credential was acquired
+ */
+typedef int GIT_CALLBACK(git_credential_acquire_cb)(
+	git_credential **out,
+	const char *url,
+	const char *username_from_url,
+	unsigned int allowed_types,
+	void *payload);
+
+/**
+ * Free a credential.
+ *
+ * This is only necessary if you own the object; that is, if you are a
+ * transport.
+ *
+ * @param cred the object to free
+ */
+GIT_EXTERN(void) git_credential_free(git_credential *cred);
+
+/**
+ * Check whether a credential object contains username information.
+ *
+ * @param cred object to check
+ * @return 1 if the credential object has non-NULL username, 0 otherwise
+ */
+GIT_EXTERN(int) git_credential_has_username(git_credential *cred);
+
+/**
+ * Return the username associated with a credential object.
+ *
+ * @param cred object to check
+ * @return the credential username, or NULL if not applicable
+ */
+GIT_EXTERN(const char *) git_credential_get_username(git_credential *cred);
+
+/**
+ * Create a new plain-text username and password credential object.
+ * The supplied credential parameter will be internally duplicated.
+ *
+ * @param out The newly created credential object.
+ * @param username The username of the credential.
+ * @param password The password of the credential.
+ * @return 0 for success or an error code for failure
+ */
+GIT_EXTERN(int) git_credential_userpass_plaintext_new(
+	git_credential **out,
+	const char *username,
+	const char *password);
+
+/**
+ * Create a "default" credential usable for Negotiate mechanisms like NTLM
+ * or Kerberos authentication.
+ *
+ * @param out The newly created credential object.
+ * @return 0 for success or an error code for failure
+ */
+GIT_EXTERN(int) git_credential_default_new(git_credential **out);
+
+/**
+ * Create a credential to specify a username.
+ *
+ * This is used with ssh authentication to query for the username if
+ * none is specified in the url.
+ *
+ * @param out The newly created credential object.
+ * @param username The username to authenticate with
+ * @return 0 for success or an error code for failure
+ */
+GIT_EXTERN(int) git_credential_username_new(git_credential **out, const char *username);
+
+/**
+ * Create a new passphrase-protected ssh key credential object.
+ * The supplied credential parameter will be internally duplicated.
+ *
+ * @param out The newly created credential object.
+ * @param username username to use to authenticate
+ * @param publickey The path to the public key of the credential.
+ * @param privatekey The path to the private key of the credential.
+ * @param passphrase The passphrase of the credential.
+ * @return 0 for success or an error code for failure
+ */
+GIT_EXTERN(int) git_credential_ssh_key_new(
+	git_credential **out,
+	const char *username,
+	const char *publickey,
+	const char *privatekey,
+	const char *passphrase);
+
+/**
+ * Create a new ssh key credential object reading the keys from memory.
+ *
+ * @param out The newly created credential object.
+ * @param username username to use to authenticate.
+ * @param publickey The public key of the credential.
+ * @param privatekey The private key of the credential.
+ * @param passphrase The passphrase of the credential.
+ * @return 0 for success or an error code for failure
+ */
+GIT_EXTERN(int) git_credential_ssh_key_memory_new(
+	git_credential **out,
+	const char *username,
+	const char *publickey,
+	const char *privatekey,
+	const char *passphrase);
+
+/*
+ * If the user hasn't included libssh2.h before git2.h, we need to
+ * define a few types for the callback signatures.
+ */
+#ifndef LIBSSH2_VERSION
+typedef struct _LIBSSH2_SESSION LIBSSH2_SESSION;
+typedef struct _LIBSSH2_USERAUTH_KBDINT_PROMPT LIBSSH2_USERAUTH_KBDINT_PROMPT;
+typedef struct _LIBSSH2_USERAUTH_KBDINT_RESPONSE LIBSSH2_USERAUTH_KBDINT_RESPONSE;
+#endif
+
+typedef void GIT_CALLBACK(git_credential_ssh_interactive_cb)(
+	const char *name,
+	int name_len,
+	const char *instruction, int instruction_len,
+	int num_prompts, const LIBSSH2_USERAUTH_KBDINT_PROMPT *prompts,
+	LIBSSH2_USERAUTH_KBDINT_RESPONSE *responses,
+	void **abstract);
+
+
+/**
+ * Create a new ssh keyboard-interactive based credential object.
+ * The supplied credential parameter will be internally duplicated.
+ *
+ * @param out The newly created credential object.
+ * @param username Username to use to authenticate.
+ * @param prompt_callback The callback method used for prompts.
+ * @param payload Additional data to pass to the callback.
+ * @return 0 for success or an error code for failure.
+ */
+GIT_EXTERN(int) git_credential_ssh_interactive_new(
+	git_credential **out,
+	const char *username,
+	git_credential_ssh_interactive_cb prompt_callback,
+	void *payload);
+
+/**
+ * Create a new ssh key credential object used for querying an ssh-agent.
+ * The supplied credential parameter will be internally duplicated.
+ *
+ * @param out The newly created credential object.
+ * @param username username to use to authenticate
+ * @return 0 for success or an error code for failure
+ */
+GIT_EXTERN(int) git_credential_ssh_key_from_agent(
+	git_credential **out,
+	const char *username);
+
+typedef int GIT_CALLBACK(git_credential_sign_cb)(
+	LIBSSH2_SESSION *session,
+	unsigned char **sig, size_t *sig_len,
+	const unsigned char *data, size_t data_len,
+	void **abstract);
+
+/**
+ * Create an ssh key credential with a custom signing function.
+ *
+ * This lets you use your own function to sign the challenge.
+ *
+ * This function and its credential type is provided for completeness
+ * and wraps `libssh2_userauth_publickey()`, which is undocumented.
+ *
+ * The supplied credential parameter will be internally duplicated.
+ *
+ * @param out The newly created credential object.
+ * @param username username to use to authenticate
+ * @param publickey The bytes of the public key.
+ * @param publickey_len The length of the public key in bytes.
+ * @param sign_callback The callback method to sign the data during the challenge.
+ * @param payload Additional data to pass to the callback.
+ * @return 0 for success or an error code for failure
+ */
+GIT_EXTERN(int) git_credential_ssh_custom_new(
+	git_credential **out,
+	const char *username,
+	const char *publickey,
+	size_t publickey_len,
+	git_credential_sign_cb sign_callback,
+	void *payload);
+
+/** @} */
+GIT_END_DECL
+#endif

3rdparty/libgit2/include/git2/credential_helpers.h

@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_credential_helpers_h__
+#define INCLUDE_git_credential_helpers_h__
+
+#include "transport.h"
+
+/**
+ * @file git2/credential_helpers.h
+ * @brief Utility functions for credential management
+ * @defgroup git_credential_helpers credential management helpers
+ * @ingroup Git
+ * @{
+ */
+GIT_BEGIN_DECL
+
+/**
+ * Payload for git_credential_userpass_plaintext.
+ */
+typedef struct git_credential_userpass_payload {
+	const char *username;
+	const char *password;
+} git_credential_userpass_payload;
+
+
+/**
+ * Stock callback usable as a git_credential_acquire_cb.  This calls
+ * git_cred_userpass_plaintext_new unless the protocol has not specified
+ * `GIT_CREDENTIAL_USERPASS_PLAINTEXT` as an allowed type.
+ *
+ * @param out The newly created credential object.
+ * @param url The resource for which we are demanding a credential.
+ * @param user_from_url The username that was embedded in a "user\@host"
+ *                          remote url, or NULL if not included.
+ * @param allowed_types A bitmask stating which credential types are OK to return.
+ * @param payload The payload provided when specifying this callback.  (This is
+ *        interpreted as a `git_credential_userpass_payload*`.)
+ * @return 0 or an error code.
+ */
+GIT_EXTERN(int) git_credential_userpass(
+		git_credential **out,
+		const char *url,
+		const char *user_from_url,
+		unsigned int allowed_types,
+		void *payload);
+
+/** @} */
+GIT_END_DECL
+#endif

3rdparty/libgit2/include/git2/deprecated.h

@@ -0,0 +1,939 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_deprecated_h__
+#define INCLUDE_git_deprecated_h__
+
+#include "attr.h"
+#include "config.h"
+#include "common.h"
+#include "blame.h"
+#include "buffer.h"
+#include "checkout.h"
+#include "cherrypick.h"
+#include "clone.h"
+#include "describe.h"
+#include "diff.h"
+#include "errors.h"
+#include "filter.h"
+#include "index.h"
+#include "indexer.h"
+#include "merge.h"
+#include "object.h"
+#include "proxy.h"
+#include "refs.h"
+#include "rebase.h"
+#include "remote.h"
+#include "trace.h"
+#include "repository.h"
+#include "revert.h"
+#include "revparse.h"
+#include "stash.h"
+#include "status.h"
+#include "submodule.h"
+#include "worktree.h"
+#include "credential.h"
+#include "credential_helpers.h"
+
+/*
+ * Users can avoid deprecated functions by defining `GIT_DEPRECATE_HARD`.
+ */
+#ifndef GIT_DEPRECATE_HARD
+
+/*
+ * The credential structures are now opaque by default, and their
+ * definition has moved into the `sys/credential.h` header; include
+ * them here for backward compatibility.
+ */
+#include "sys/credential.h"
+
+/**
+ * @file git2/deprecated.h
+ * @brief libgit2 deprecated functions and values
+ * @ingroup Git
+ * @{
+ */
+GIT_BEGIN_DECL
+
+/** @name Deprecated Attribute Constants
+ *
+ * These enumeration values are retained for backward compatibility.
+ * The newer versions of these functions should be preferred in all
+ * new code.
+ *
+ * There is no plan to remove these backward compatibility values at
+ * this time.
+ */
+/**@{*/
+
+#define GIT_ATTR_UNSPECIFIED_T GIT_ATTR_VALUE_UNSPECIFIED
+#define GIT_ATTR_TRUE_T GIT_ATTR_VALUE_TRUE
+#define GIT_ATTR_FALSE_T GIT_ATTR_VALUE_FALSE
+#define GIT_ATTR_VALUE_T GIT_ATTR_VALUE_STRING
+
+#define GIT_ATTR_TRUE(attr) GIT_ATTR_IS_TRUE(attr)
+#define GIT_ATTR_FALSE(attr) GIT_ATTR_IS_FALSE(attr)
+#define GIT_ATTR_UNSPECIFIED(attr) GIT_ATTR_IS_UNSPECIFIED(attr)
+
+typedef git_attr_value_t git_attr_t;
+
+/**@}*/
+
+/** @name Deprecated Blob Functions and Constants
+ *
+ * These functions and enumeration values are retained for backward
+ * compatibility.  The newer versions of these functions and values
+ * should be preferred in all new code.
+ *
+ * There is no plan to remove these backward compatibility values at
+ * this time.
+ */
+/**@{*/
+
+#define GIT_BLOB_FILTER_ATTTRIBUTES_FROM_HEAD GIT_BLOB_FILTER_ATTRIBUTES_FROM_HEAD
+
+GIT_EXTERN(int) git_blob_create_fromworkdir(git_oid *id, git_repository *repo, const char *relative_path);
+GIT_EXTERN(int) git_blob_create_fromdisk(git_oid *id, git_repository *repo, const char *path);
+GIT_EXTERN(int) git_blob_create_fromstream(
+	git_writestream **out,
+	git_repository *repo,
+	const char *hintpath);
+GIT_EXTERN(int) git_blob_create_fromstream_commit(
+	git_oid *out,
+	git_writestream *stream);
+GIT_EXTERN(int) git_blob_create_frombuffer(
+	git_oid *id, git_repository *repo, const void *buffer, size_t len);
+
+/** Deprecated in favor of `git_blob_filter`.
+ *
+ * @deprecated Use git_blob_filter
+ * @see git_blob_filter
+ */
+GIT_EXTERN(int) git_blob_filtered_content(
+	git_buf *out,
+	git_blob *blob,
+	const char *as_path,
+	int check_for_binary_data);
+
+/**@}*/
+
+/** @name Deprecated Filter Functions
+ *
+ * These functions are retained for backward compatibility.  The
+ * newer versions of these functions should be preferred in all
+ * new code.
+ *
+ * There is no plan to remove these backward compatibility values at
+ * this time.
+ */
+/**@{*/
+
+/** Deprecated in favor of `git_filter_list_stream_buffer`.
+ *
+ * @deprecated Use git_filter_list_stream_buffer
+ * @see Use git_filter_list_stream_buffer
+ */
+GIT_EXTERN(int) git_filter_list_stream_data(
+	git_filter_list *filters,
+	git_buf *data,
+	git_writestream *target);
+
+/** Deprecated in favor of `git_filter_list_apply_to_buffer`.
+ *
+ * @deprecated Use git_filter_list_apply_to_buffer
+ * @see Use git_filter_list_apply_to_buffer
+ */
+GIT_EXTERN(int) git_filter_list_apply_to_data(
+	git_buf *out,
+	git_filter_list *filters,
+	git_buf *in);
+
+/**@}*/
+
+/** @name Deprecated Tree Functions
+ *
+ * These functions are retained for backward compatibility.  The
+ * newer versions of these functions and values should be preferred
+ * in all new code.
+ *
+ * There is no plan to remove these backward compatibility values at
+ * this time.
+ */
+/**@{*/
+
+/**
+ * Write the contents of the tree builder as a tree object.
+ * This is an alias of `git_treebuilder_write` and is preserved
+ * for backward compatibility.
+ *
+ * This function is deprecated, but there is no plan to remove this
+ * function at this time.
+ *
+ * @deprecated Use git_treebuilder_write
+ * @see git_treebuilder_write
+ */
+GIT_EXTERN(int) git_treebuilder_write_with_buffer(
+	git_oid *oid, git_treebuilder *bld, git_buf *tree);
+
+/**@}*/
+
+/** @name Deprecated Buffer Functions
+ *
+ * These functions and enumeration values are retained for backward
+ * compatibility.  The newer versions of these functions should be
+ * preferred in all new code.
+ *
+ * There is no plan to remove these backward compatibility values at
+ * this time.
+ */
+/**@{*/
+
+/**
+ * Static initializer for git_buf from static buffer
+ */
+#define GIT_BUF_INIT_CONST(STR,LEN) { (char *)(STR), 0, (size_t)(LEN) }
+
+/**
+ * Resize the buffer allocation to make more space.
+ *
+ * This will attempt to grow the buffer to accommodate the target size.
+ *
+ * If the buffer refers to memory that was not allocated by libgit2 (i.e.
+ * the `asize` field is zero), then `ptr` will be replaced with a newly
+ * allocated block of data.  Be careful so that memory allocated by the
+ * caller is not lost.  As a special variant, if you pass `target_size` as
+ * 0 and the memory is not allocated by libgit2, this will allocate a new
+ * buffer of size `size` and copy the external data into it.
+ *
+ * Currently, this will never shrink a buffer, only expand it.
+ *
+ * If the allocation fails, this will return an error and the buffer will be
+ * marked as invalid for future operations, invaliding the contents.
+ *
+ * @param buffer The buffer to be resized; may or may not be allocated yet
+ * @param target_size The desired available size
+ * @return 0 on success, -1 on allocation failure
+ */
+GIT_EXTERN(int) git_buf_grow(git_buf *buffer, size_t target_size);
+
+/**
+ * Set buffer to a copy of some raw data.
+ *
+ * @param buffer The buffer to set
+ * @param data The data to copy into the buffer
+ * @param datalen The length of the data to copy into the buffer
+ * @return 0 on success, -1 on allocation failure
+ */
+GIT_EXTERN(int) git_buf_set(
+	git_buf *buffer, const void *data, size_t datalen);
+
+/**
+* Check quickly if buffer looks like it contains binary data
+*
+* @param buf Buffer to check
+* @return 1 if buffer looks like non-text data
+*/
+GIT_EXTERN(int) git_buf_is_binary(const git_buf *buf);
+
+/**
+* Check quickly if buffer contains a NUL byte
+*
+* @param buf Buffer to check
+* @return 1 if buffer contains a NUL byte
+*/
+GIT_EXTERN(int) git_buf_contains_nul(const git_buf *buf);
+
+/**
+ * Free the memory referred to by the git_buf.  This is an alias of
+ * `git_buf_dispose` and is preserved for backward compatibility.
+ *
+ * This function is deprecated, but there is no plan to remove this
+ * function at this time.
+ *
+ * @deprecated Use git_buf_dispose
+ * @see git_buf_dispose
+ */
+GIT_EXTERN(void) git_buf_free(git_buf *buffer);
+
+/**@}*/
+
+/** @name Deprecated Commit Definitions
+ */
+/**@{*/
+
+/**
+ * Provide a commit signature during commit creation.
+ *
+ * Callers should instead define a `git_commit_create_cb` that
+ * generates a commit buffer using `git_commit_create_buffer`, sign
+ * that buffer and call `git_commit_create_with_signature`.
+ *
+ * @deprecated use a `git_commit_create_cb` instead
+ */
+typedef int (*git_commit_signing_cb)(
+	git_buf *signature,
+	git_buf *signature_field,
+	const char *commit_content,
+	void *payload);
+
+/**@}*/
+
+/** @name Deprecated Config Functions and Constants
+ */
+/**@{*/
+
+#define GIT_CVAR_FALSE  GIT_CONFIGMAP_FALSE
+#define GIT_CVAR_TRUE   GIT_CONFIGMAP_TRUE
+#define GIT_CVAR_INT32  GIT_CONFIGMAP_INT32
+#define GIT_CVAR_STRING GIT_CONFIGMAP_STRING
+
+typedef git_configmap git_cvar_map;
+
+/**@}*/
+
+/** @name Deprecated Diff Functions and Constants
+ *
+ * These functions and enumeration values are retained for backward
+ * compatibility.  The newer versions of these functions and values
+ * should be preferred in all new code.
+ *
+ * There is no plan to remove these backward compatibility values at
+ * this time.
+ */
+/**@{*/
+
+/**
+ * Formatting options for diff e-mail generation
+ */
+typedef enum {
+	/** Normal patch, the default */
+	GIT_DIFF_FORMAT_EMAIL_NONE = 0,
+
+	/** Don't insert "[PATCH]" in the subject header*/
+	GIT_DIFF_FORMAT_EMAIL_EXCLUDE_SUBJECT_PATCH_MARKER = (1 << 0)
+
+} git_diff_format_email_flags_t;
+
+/**
+ * Options for controlling the formatting of the generated e-mail.
+ */
+typedef struct {
+	unsigned int version;
+
+	/** see `git_diff_format_email_flags_t` above */
+	uint32_t flags;
+
+	/** This patch number */
+	size_t patch_no;
+
+	/** Total number of patches in this series */
+	size_t total_patches;
+
+	/** id to use for the commit */
+	const git_oid *id;
+
+	/** Summary of the change */
+	const char *summary;
+
+	/** Commit message's body */
+	const char *body;
+
+	/** Author of the change */
+	const git_signature *author;
+} git_diff_format_email_options;
+
+#define GIT_DIFF_FORMAT_EMAIL_OPTIONS_VERSION 1
+#define GIT_DIFF_FORMAT_EMAIL_OPTIONS_INIT {GIT_DIFF_FORMAT_EMAIL_OPTIONS_VERSION, 0, 1, 1, NULL, NULL, NULL, NULL}
+
+/**
+ * Create an e-mail ready patch from a diff.
+ *
+ * @deprecated git_email_create_from_diff
+ * @see git_email_create_from_diff
+ */
+GIT_EXTERN(int) git_diff_format_email(
+	git_buf *out,
+	git_diff *diff,
+	const git_diff_format_email_options *opts);
+
+/**
+ * Create an e-mail ready patch for a commit.
+ *
+ * @deprecated git_email_create_from_commit
+ * @see git_email_create_from_commit
+ */
+GIT_EXTERN(int) git_diff_commit_as_email(
+	git_buf *out,
+	git_repository *repo,
+	git_commit *commit,
+	size_t patch_no,
+	size_t total_patches,
+	uint32_t flags,
+	const git_diff_options *diff_opts);
+
+/**
+ * Initialize git_diff_format_email_options structure
+ *
+ * Initializes a `git_diff_format_email_options` with default values. Equivalent
+ * to creating an instance with GIT_DIFF_FORMAT_EMAIL_OPTIONS_INIT.
+ *
+ * @param opts The `git_blame_options` struct to initialize.
+ * @param version The struct version; pass `GIT_DIFF_FORMAT_EMAIL_OPTIONS_VERSION`.
+ * @return Zero on success; -1 on failure.
+ */
+GIT_EXTERN(int) git_diff_format_email_options_init(
+	git_diff_format_email_options *opts,
+	unsigned int version);
+
+/**@}*/
+
+/** @name Deprecated Error Functions and Constants
+ *
+ * These functions and enumeration values are retained for backward
+ * compatibility.  The newer versions of these functions and values
+ * should be preferred in all new code.
+ *
+ * There is no plan to remove these backward compatibility values at
+ * this time.
+ */
+/**@{*/
+
+#define GITERR_NONE GIT_ERROR_NONE
+#define GITERR_NOMEMORY GIT_ERROR_NOMEMORY
+#define GITERR_OS GIT_ERROR_OS
+#define GITERR_INVALID GIT_ERROR_INVALID
+#define GITERR_REFERENCE GIT_ERROR_REFERENCE
+#define GITERR_ZLIB GIT_ERROR_ZLIB
+#define GITERR_REPOSITORY GIT_ERROR_REPOSITORY
+#define GITERR_CONFIG GIT_ERROR_CONFIG
+#define GITERR_REGEX GIT_ERROR_REGEX
+#define GITERR_ODB GIT_ERROR_ODB
+#define GITERR_INDEX GIT_ERROR_INDEX
+#define GITERR_OBJECT GIT_ERROR_OBJECT
+#define GITERR_NET GIT_ERROR_NET
+#define GITERR_TAG GIT_ERROR_TAG
+#define GITERR_TREE GIT_ERROR_TREE
+#define GITERR_INDEXER GIT_ERROR_INDEXER
+#define GITERR_SSL GIT_ERROR_SSL
+#define GITERR_SUBMODULE GIT_ERROR_SUBMODULE
+#define GITERR_THREAD GIT_ERROR_THREAD
+#define GITERR_STASH GIT_ERROR_STASH
+#define GITERR_CHECKOUT GIT_ERROR_CHECKOUT
+#define GITERR_FETCHHEAD GIT_ERROR_FETCHHEAD
+#define GITERR_MERGE GIT_ERROR_MERGE
+#define GITERR_SSH GIT_ERROR_SSH
+#define GITERR_FILTER GIT_ERROR_FILTER
+#define GITERR_REVERT GIT_ERROR_REVERT
+#define GITERR_CALLBACK GIT_ERROR_CALLBACK
+#define GITERR_CHERRYPICK GIT_ERROR_CHERRYPICK
+#define GITERR_DESCRIBE GIT_ERROR_DESCRIBE
+#define GITERR_REBASE GIT_ERROR_REBASE
+#define GITERR_FILESYSTEM GIT_ERROR_FILESYSTEM
+#define GITERR_PATCH GIT_ERROR_PATCH
+#define GITERR_WORKTREE GIT_ERROR_WORKTREE
+#define GITERR_SHA1 GIT_ERROR_SHA1
+
+#define GIT_ERROR_SHA1 GIT_ERROR_SHA
+
+/**
+ * Return the last `git_error` object that was generated for the
+ * current thread.  This is an alias of `git_error_last` and is
+ * preserved for backward compatibility.
+ *
+ * This function is deprecated, but there is no plan to remove this
+ * function at this time.
+ *
+ * @deprecated Use git_error_last
+ * @see git_error_last
+ */
+GIT_EXTERN(const git_error *) giterr_last(void);
+
+/**
+ * Clear the last error.  This is an alias of `git_error_last` and is
+ * preserved for backward compatibility.
+ *
+ * This function is deprecated, but there is no plan to remove this
+ * function at this time.
+ *
+ * @deprecated Use git_error_clear
+ * @see git_error_clear
+ */
+GIT_EXTERN(void) giterr_clear(void);
+
+/**
+ * Sets the error message to the given string.  This is an alias of
+ * `git_error_set_str` and is preserved for backward compatibility.
+ *
+ * This function is deprecated, but there is no plan to remove this
+ * function at this time.
+ *
+ * @deprecated Use git_error_set_str
+ * @see git_error_set_str
+ */
+GIT_EXTERN(void) giterr_set_str(int error_class, const char *string);
+
+/**
+ * Indicates that an out-of-memory situation occurred.  This is an alias
+ * of `git_error_set_oom` and is preserved for backward compatibility.
+ *
+ * This function is deprecated, but there is no plan to remove this
+ * function at this time.
+ *
+ * @deprecated Use git_error_set_oom
+ * @see git_error_set_oom
+ */
+GIT_EXTERN(void) giterr_set_oom(void);
+
+/**@}*/
+
+/** @name Deprecated Index Functions and Constants
+ *
+ * These functions and enumeration values are retained for backward
+ * compatibility.  The newer versions of these values should be
+ * preferred in all new code.
+ *
+ * There is no plan to remove these backward compatibility values at
+ * this time.
+ */
+/**@{*/
+
+#define GIT_IDXENTRY_NAMEMASK          GIT_INDEX_ENTRY_NAMEMASK
+#define GIT_IDXENTRY_STAGEMASK         GIT_INDEX_ENTRY_STAGEMASK
+#define GIT_IDXENTRY_STAGESHIFT        GIT_INDEX_ENTRY_STAGESHIFT
+
+/* The git_indxentry_flag_t enum */
+#define GIT_IDXENTRY_EXTENDED          GIT_INDEX_ENTRY_EXTENDED
+#define GIT_IDXENTRY_VALID             GIT_INDEX_ENTRY_VALID
+
+#define GIT_IDXENTRY_STAGE(E)          GIT_INDEX_ENTRY_STAGE(E)
+#define GIT_IDXENTRY_STAGE_SET(E,S)    GIT_INDEX_ENTRY_STAGE_SET(E,S)
+
+/* The git_idxentry_extended_flag_t enum */
+#define GIT_IDXENTRY_INTENT_TO_ADD     GIT_INDEX_ENTRY_INTENT_TO_ADD
+#define GIT_IDXENTRY_SKIP_WORKTREE     GIT_INDEX_ENTRY_SKIP_WORKTREE
+#define GIT_IDXENTRY_EXTENDED_FLAGS    (GIT_INDEX_ENTRY_INTENT_TO_ADD | GIT_INDEX_ENTRY_SKIP_WORKTREE)
+#define GIT_IDXENTRY_EXTENDED2         (1 << 15)
+#define GIT_IDXENTRY_UPDATE            (1 << 0)
+#define GIT_IDXENTRY_REMOVE            (1 << 1)
+#define GIT_IDXENTRY_UPTODATE          (1 << 2)
+#define GIT_IDXENTRY_ADDED             (1 << 3)
+#define GIT_IDXENTRY_HASHED            (1 << 4)
+#define GIT_IDXENTRY_UNHASHED          (1 << 5)
+#define GIT_IDXENTRY_WT_REMOVE         (1 << 6)
+#define GIT_IDXENTRY_CONFLICTED        (1 << 7)
+#define GIT_IDXENTRY_UNPACKED          (1 << 8)
+#define GIT_IDXENTRY_NEW_SKIP_WORKTREE (1 << 9)
+
+/* The git_index_capability_t enum */
+#define GIT_INDEXCAP_IGNORE_CASE       GIT_INDEX_CAPABILITY_IGNORE_CASE
+#define GIT_INDEXCAP_NO_FILEMODE       GIT_INDEX_CAPABILITY_NO_FILEMODE
+#define GIT_INDEXCAP_NO_SYMLINKS       GIT_INDEX_CAPABILITY_NO_SYMLINKS
+#define GIT_INDEXCAP_FROM_OWNER        GIT_INDEX_CAPABILITY_FROM_OWNER
+
+GIT_EXTERN(int) git_index_add_frombuffer(
+	git_index *index,
+	const git_index_entry *entry,
+	const void *buffer, size_t len);
+
+/**@}*/
+
+/** @name Deprecated Object Constants
+ *
+ * These enumeration values are retained for backward compatibility.  The
+ * newer versions of these values should be preferred in all new code.
+ *
+ * There is no plan to remove these backward compatibility values at
+ * this time.
+ */
+/**@{*/
+
+#define git_otype git_object_t
+
+#define GIT_OBJ_ANY GIT_OBJECT_ANY
+#define GIT_OBJ_BAD GIT_OBJECT_INVALID
+#define GIT_OBJ__EXT1 0
+#define GIT_OBJ_COMMIT GIT_OBJECT_COMMIT
+#define GIT_OBJ_TREE GIT_OBJECT_TREE
+#define GIT_OBJ_BLOB GIT_OBJECT_BLOB
+#define GIT_OBJ_TAG GIT_OBJECT_TAG
+#define GIT_OBJ__EXT2 5
+#define GIT_OBJ_OFS_DELTA GIT_OBJECT_OFS_DELTA
+#define GIT_OBJ_REF_DELTA GIT_OBJECT_REF_DELTA
+
+/**
+ * Get the size in bytes for the structure which
+ * acts as an in-memory representation of any given
+ * object type.
+ *
+ * For all the core types, this would the equivalent
+ * of calling `sizeof(git_commit)` if the core types
+ * were not opaque on the external API.
+ *
+ * @param type object type to get its size
+ * @return size in bytes of the object
+ */
+GIT_EXTERN(size_t) git_object__size(git_object_t type);
+
+/**@}*/
+
+/** @name Deprecated Remote Functions
+ *
+ * These functions are retained for backward compatibility.  The newer
+ * versions of these functions should be preferred in all new code.
+ *
+ * There is no plan to remove these backward compatibility functions at
+ * this time.
+ */
+/**@{*/
+
+/**
+ * Ensure the remote name is well-formed.
+ *
+ * @deprecated Use git_remote_name_is_valid
+ * @param remote_name name to be checked.
+ * @return 1 if the reference name is acceptable; 0 if it isn't
+ */
+GIT_EXTERN(int) git_remote_is_valid_name(const char *remote_name);
+
+/**@}*/
+
+/** @name Deprecated Reference Functions and Constants
+ *
+ * These functions and enumeration values are retained for backward
+ * compatibility.  The newer versions of these values should be
+ * preferred in all new code.
+ *
+ * There is no plan to remove these backward compatibility values at
+ * this time.
+ */
+/**@{*/
+
+ /** Basic type of any Git reference. */
+#define git_ref_t git_reference_t
+#define git_reference_normalize_t git_reference_format_t
+
+#define GIT_REF_INVALID GIT_REFERENCE_INVALID
+#define GIT_REF_OID GIT_REFERENCE_DIRECT
+#define GIT_REF_SYMBOLIC GIT_REFERENCE_SYMBOLIC
+#define GIT_REF_LISTALL GIT_REFERENCE_ALL
+
+#define GIT_REF_FORMAT_NORMAL GIT_REFERENCE_FORMAT_NORMAL
+#define GIT_REF_FORMAT_ALLOW_ONELEVEL GIT_REFERENCE_FORMAT_ALLOW_ONELEVEL
+#define GIT_REF_FORMAT_REFSPEC_PATTERN GIT_REFERENCE_FORMAT_REFSPEC_PATTERN
+#define GIT_REF_FORMAT_REFSPEC_SHORTHAND GIT_REFERENCE_FORMAT_REFSPEC_SHORTHAND
+
+/**
+ * Ensure the reference name is well-formed.
+ *
+ * Valid reference names must follow one of two patterns:
+ *
+ * 1. Top-level names must contain only capital letters and underscores,
+ *    and must begin and end with a letter. (e.g. "HEAD", "ORIG_HEAD").
+ * 2. Names prefixed with "refs/" can be almost anything.  You must avoid
+ *    the characters '~', '^', ':', '\\', '?', '[', and '*', and the
+ *    sequences ".." and "@{" which have special meaning to revparse.
+ *
+ * @deprecated Use git_reference_name_is_valid
+ * @param refname name to be checked.
+ * @return 1 if the reference name is acceptable; 0 if it isn't
+ */
+GIT_EXTERN(int) git_reference_is_valid_name(const char *refname);
+
+GIT_EXTERN(int) git_tag_create_frombuffer(
+	git_oid *oid,
+	git_repository *repo,
+	const char *buffer,
+	int force);
+
+/**@}*/
+
+/** @name Deprecated Revspec Constants
+ *
+ * These enumeration values are retained for backward compatibility.
+ * The newer versions of these values should be preferred in all new
+ * code.
+ *
+ * There is no plan to remove these backward compatibility values at
+ * this time.
+ */
+/**@{*/
+
+typedef git_revspec_t git_revparse_mode_t;
+
+#define GIT_REVPARSE_SINGLE GIT_REVSPEC_SINGLE
+#define GIT_REVPARSE_RANGE GIT_REVSPEC_RANGE
+#define GIT_REVPARSE_MERGE_BASE GIT_REVSPEC_MERGE_BASE
+
+/**@}*/
+
+/** @name Deprecated Credential Types
+ *
+ * These types are retained for backward compatibility.  The newer
+ * versions of these values should be preferred in all new code.
+ *
+ * There is no plan to remove these backward compatibility values at
+ * this time.
+ */
+/**@{*/
+
+typedef git_credential git_cred;
+typedef git_credential_userpass_plaintext git_cred_userpass_plaintext;
+typedef git_credential_username git_cred_username;
+typedef git_credential_default git_cred_default;
+typedef git_credential_ssh_key git_cred_ssh_key;
+typedef git_credential_ssh_interactive git_cred_ssh_interactive;
+typedef git_credential_ssh_custom git_cred_ssh_custom;
+
+typedef git_credential_acquire_cb git_cred_acquire_cb;
+typedef git_credential_sign_cb git_cred_sign_callback;
+typedef git_credential_sign_cb git_cred_sign_cb;
+typedef git_credential_ssh_interactive_cb git_cred_ssh_interactive_callback;
+typedef git_credential_ssh_interactive_cb git_cred_ssh_interactive_cb;
+
+#define git_credtype_t git_credential_t
+
+#define GIT_CREDTYPE_USERPASS_PLAINTEXT GIT_CREDENTIAL_USERPASS_PLAINTEXT
+#define GIT_CREDTYPE_SSH_KEY GIT_CREDENTIAL_SSH_KEY
+#define GIT_CREDTYPE_SSH_CUSTOM GIT_CREDENTIAL_SSH_CUSTOM
+#define GIT_CREDTYPE_DEFAULT GIT_CREDENTIAL_DEFAULT
+#define GIT_CREDTYPE_SSH_INTERACTIVE GIT_CREDENTIAL_SSH_INTERACTIVE
+#define GIT_CREDTYPE_USERNAME GIT_CREDENTIAL_USERNAME
+#define GIT_CREDTYPE_SSH_MEMORY GIT_CREDENTIAL_SSH_MEMORY
+
+GIT_EXTERN(void) git_cred_free(git_credential *cred);
+GIT_EXTERN(int) git_cred_has_username(git_credential *cred);
+GIT_EXTERN(const char *) git_cred_get_username(git_credential *cred);
+GIT_EXTERN(int) git_cred_userpass_plaintext_new(
+	git_credential **out,
+	const char *username,
+	const char *password);
+GIT_EXTERN(int) git_cred_default_new(git_credential **out);
+GIT_EXTERN(int) git_cred_username_new(git_credential **out, const char *username);
+GIT_EXTERN(int) git_cred_ssh_key_new(
+	git_credential **out,
+	const char *username,
+	const char *publickey,
+	const char *privatekey,
+	const char *passphrase);
+GIT_EXTERN(int) git_cred_ssh_key_memory_new(
+	git_credential **out,
+	const char *username,
+	const char *publickey,
+	const char *privatekey,
+	const char *passphrase);
+GIT_EXTERN(int) git_cred_ssh_interactive_new(
+	git_credential **out,
+	const char *username,
+	git_credential_ssh_interactive_cb prompt_callback,
+	void *payload);
+GIT_EXTERN(int) git_cred_ssh_key_from_agent(
+	git_credential **out,
+	const char *username);
+GIT_EXTERN(int) git_cred_ssh_custom_new(
+	git_credential **out,
+	const char *username,
+	const char *publickey,
+	size_t publickey_len,
+	git_credential_sign_cb sign_callback,
+	void *payload);
+
+/* Deprecated Credential Helper Types */
+
+typedef git_credential_userpass_payload git_cred_userpass_payload;
+
+GIT_EXTERN(int) git_cred_userpass(
+	git_credential **out,
+	const char *url,
+	const char *user_from_url,
+	unsigned int allowed_types,
+	void *payload);
+
+/**@}*/
+
+/** @name Deprecated Trace Callback Types
+ *
+ * These types are retained for backward compatibility.  The newer
+ * versions of these values should be preferred in all new code.
+ *
+ * There is no plan to remove these backward compatibility values at
+ * this time.
+ */
+/**@{*/
+
+typedef git_trace_cb git_trace_callback;
+
+/**@}*/
+
+/** @name Deprecated Object ID Types
+ *
+ * These types are retained for backward compatibility.  The newer
+ * versions of these values should be preferred in all new code.
+ *
+ * There is no plan to remove these backward compatibility values at
+ * this time.
+ */
+/**@{*/
+
+#ifndef GIT_EXPERIMENTAL_SHA256
+# define GIT_OID_RAWSZ    GIT_OID_SHA1_SIZE
+# define GIT_OID_HEXSZ    GIT_OID_SHA1_HEXSIZE
+# define GIT_OID_HEX_ZERO GIT_OID_SHA1_HEXZERO
+#endif
+
+GIT_EXTERN(int) git_oid_iszero(const git_oid *id);
+
+/**@}*/
+
+/** @name Deprecated OID Array Functions
+ *
+ * These types are retained for backward compatibility.  The newer
+ * versions of these values should be preferred in all new code.
+ *
+ * There is no plan to remove these backward compatibility values at
+ * this time.
+ */
+/**@{*/
+
+/**
+ * Free the memory referred to by the git_oidarray.  This is an alias of
+ * `git_oidarray_dispose` and is preserved for backward compatibility.
+ *
+ * This function is deprecated, but there is no plan to remove this
+ * function at this time.
+ *
+ * @deprecated Use git_oidarray_dispose
+ * @see git_oidarray_dispose
+ */
+GIT_EXTERN(void) git_oidarray_free(git_oidarray *array);
+
+/**@}*/
+
+/** @name Deprecated Transfer Progress Types
+ *
+ * These types are retained for backward compatibility.  The newer
+ * versions of these values should be preferred in all new code.
+ *
+ * There is no plan to remove these backward compatibility values at
+ * this time.
+ */
+/**@{*/
+
+/**
+ * This structure is used to provide callers information about the
+ * progress of indexing a packfile.
+ *
+ * This type is deprecated, but there is no plan to remove this
+ * type definition at this time.
+ */
+typedef git_indexer_progress git_transfer_progress;
+
+/**
+ * Type definition for progress callbacks during indexing.
+ *
+ * This type is deprecated, but there is no plan to remove this
+ * type definition at this time.
+ */
+typedef git_indexer_progress_cb git_transfer_progress_cb;
+
+/**
+ * Type definition for push transfer progress callbacks.
+ *
+ * This type is deprecated, but there is no plan to remove this
+ * type definition at this time.
+ */
+typedef git_push_transfer_progress_cb git_push_transfer_progress;
+
+ /** The type of a remote completion event */
+#define git_remote_completion_type git_remote_completion_t
+
+/**
+ * Callback for listing the remote heads
+ */
+typedef int GIT_CALLBACK(git_headlist_cb)(git_remote_head *rhead, void *payload);
+
+/**@}*/
+
+/** @name Deprecated String Array Functions
+ *
+ * These types are retained for backward compatibility.  The newer
+ * versions of these values should be preferred in all new code.
+ *
+ * There is no plan to remove these backward compatibility values at
+ * this time.
+ */
+/**@{*/
+
+/**
+ * Copy a string array object from source to target.
+ *
+ * This function is deprecated, but there is no plan to remove this
+ * function at this time.
+ *
+ * @param tgt target
+ * @param src source
+ * @return 0 on success, < 0 on allocation failure
+ */
+GIT_EXTERN(int) git_strarray_copy(git_strarray *tgt, const git_strarray *src);
+
+/**
+ * Free the memory referred to by the git_strarray.  This is an alias of
+ * `git_strarray_dispose` and is preserved for backward compatibility.
+ *
+ * This function is deprecated, but there is no plan to remove this
+ * function at this time.
+ *
+ * @deprecated Use git_strarray_dispose
+ * @see git_strarray_dispose
+ */
+GIT_EXTERN(void) git_strarray_free(git_strarray *array);
+
+/**@}*/
+
+/** @name Deprecated Options Initialization Functions
+ *
+ * These functions are retained for backward compatibility.  The newer
+ * versions of these functions should be preferred in all new code.
+ *
+ * There is no plan to remove these backward compatibility functions at
+ * this time.
+ */
+/**@{*/
+
+GIT_EXTERN(int) git_blame_init_options(git_blame_options *opts, unsigned int version);
+GIT_EXTERN(int) git_checkout_init_options(git_checkout_options *opts, unsigned int version);
+GIT_EXTERN(int) git_cherrypick_init_options(git_cherrypick_options *opts, unsigned int version);
+GIT_EXTERN(int) git_clone_init_options(git_clone_options *opts, unsigned int version);
+GIT_EXTERN(int) git_describe_init_options(git_describe_options *opts, unsigned int version);
+GIT_EXTERN(int) git_describe_init_format_options(git_describe_format_options *opts, unsigned int version);
+GIT_EXTERN(int) git_diff_init_options(git_diff_options *opts, unsigned int version);
+GIT_EXTERN(int) git_diff_find_init_options(git_diff_find_options *opts, unsigned int version);
+GIT_EXTERN(int) git_diff_format_email_init_options(git_diff_format_email_options *opts, unsigned int version);
+GIT_EXTERN(int) git_diff_patchid_init_options(git_diff_patchid_options *opts, unsigned int version);
+GIT_EXTERN(int) git_fetch_init_options(git_fetch_options *opts, unsigned int version);
+GIT_EXTERN(int) git_indexer_init_options(git_indexer_options *opts, unsigned int version);
+GIT_EXTERN(int) git_merge_init_options(git_merge_options *opts, unsigned int version);
+GIT_EXTERN(int) git_merge_file_init_input(git_merge_file_input *input, unsigned int version);
+GIT_EXTERN(int) git_merge_file_init_options(git_merge_file_options *opts, unsigned int version);
+GIT_EXTERN(int) git_proxy_init_options(git_proxy_options *opts, unsigned int version);
+GIT_EXTERN(int) git_push_init_options(git_push_options *opts, unsigned int version);
+GIT_EXTERN(int) git_rebase_init_options(git_rebase_options *opts, unsigned int version);
+GIT_EXTERN(int) git_remote_create_init_options(git_remote_create_options *opts, unsigned int version);
+GIT_EXTERN(int) git_repository_init_init_options(git_repository_init_options *opts, unsigned int version);
+GIT_EXTERN(int) git_revert_init_options(git_revert_options *opts, unsigned int version);
+GIT_EXTERN(int) git_stash_apply_init_options(git_stash_apply_options *opts, unsigned int version);
+GIT_EXTERN(int) git_status_init_options(git_status_options *opts, unsigned int version);
+GIT_EXTERN(int) git_submodule_update_init_options(git_submodule_update_options *opts, unsigned int version);
+GIT_EXTERN(int) git_worktree_add_init_options(git_worktree_add_options *opts, unsigned int version);
+GIT_EXTERN(int) git_worktree_prune_init_options(git_worktree_prune_options *opts, unsigned int version);
+
+/**@}*/
+
+/** @} */
+GIT_END_DECL
+
+#endif
+
+#endif

3rdparty/libgit2/include/git2/describe.h

@@ -0,0 +1,194 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_describe_h__
+#define INCLUDE_git_describe_h__
+
+#include "common.h"
+#include "types.h"
+#include "buffer.h"
+
+/**
+ * @file git2/describe.h
+ * @brief Git describing routines
+ * @defgroup git_describe Git describing routines
+ * @ingroup Git
+ * @{
+ */
+GIT_BEGIN_DECL
+
+/**
+ * Reference lookup strategy
+ *
+ * These behave like the --tags and --all options to git-describe,
+ * namely they say to look for any reference in either refs/tags/ or
+ * refs/ respectively.
+ */
+typedef enum {
+	GIT_DESCRIBE_DEFAULT,
+	GIT_DESCRIBE_TAGS,
+	GIT_DESCRIBE_ALL
+} git_describe_strategy_t;
+
+/**
+ * Describe options structure
+ *
+ * Initialize with `GIT_DESCRIBE_OPTIONS_INIT`. Alternatively, you can
+ * use `git_describe_options_init`.
+ *
+ */
+typedef struct git_describe_options {
+	unsigned int version;
+
+	unsigned int max_candidates_tags; /**< default: 10 */
+	unsigned int describe_strategy; /**< default: GIT_DESCRIBE_DEFAULT */
+	const char *pattern;
+	/**
+	 * When calculating the distance from the matching tag or
+	 * reference, only walk down the first-parent ancestry.
+	 */
+	int only_follow_first_parent;
+	/**
+	 * If no matching tag or reference is found, the describe
+	 * operation would normally fail. If this option is set, it
+	 * will instead fall back to showing the full id of the
+	 * commit.
+	 */
+	int show_commit_oid_as_fallback;
+} git_describe_options;
+
+#define GIT_DESCRIBE_DEFAULT_MAX_CANDIDATES_TAGS 10
+#define GIT_DESCRIBE_DEFAULT_ABBREVIATED_SIZE 7
+
+#define GIT_DESCRIBE_OPTIONS_VERSION 1
+#define GIT_DESCRIBE_OPTIONS_INIT { \
+	GIT_DESCRIBE_OPTIONS_VERSION, \
+	GIT_DESCRIBE_DEFAULT_MAX_CANDIDATES_TAGS, \
+}
+
+/**
+ * Initialize git_describe_options structure
+ *
+ * Initializes a `git_describe_options` with default values. Equivalent to creating
+ * an instance with GIT_DESCRIBE_OPTIONS_INIT.
+ *
+ * @param opts The `git_describe_options` struct to initialize.
+ * @param version The struct version; pass `GIT_DESCRIBE_OPTIONS_VERSION`.
+ * @return Zero on success; -1 on failure.
+ */
+GIT_EXTERN(int) git_describe_options_init(git_describe_options *opts, unsigned int version);
+
+/**
+ * Describe format options structure
+ *
+ * Initialize with `GIT_DESCRIBE_FORMAT_OPTIONS_INIT`. Alternatively, you can
+ * use `git_describe_format_options_init`.
+ *
+ */
+typedef struct {
+	unsigned int version;
+
+	/**
+	 * Size of the abbreviated commit id to use. This value is the
+	 * lower bound for the length of the abbreviated string. The
+	 * default is 7.
+	 */
+	unsigned int abbreviated_size;
+
+	/**
+	 * Set to use the long format even when a shorter name could be used.
+	 */
+	int always_use_long_format;
+
+	/**
+	 * If the workdir is dirty and this is set, this string will
+	 * be appended to the description string.
+	 */
+	const char *dirty_suffix;
+} git_describe_format_options;
+
+#define GIT_DESCRIBE_FORMAT_OPTIONS_VERSION 1
+#define GIT_DESCRIBE_FORMAT_OPTIONS_INIT { \
+		GIT_DESCRIBE_FORMAT_OPTIONS_VERSION,   \
+		GIT_DESCRIBE_DEFAULT_ABBREVIATED_SIZE, \
+ }
+
+/**
+ * Initialize git_describe_format_options structure
+ *
+ * Initializes a `git_describe_format_options` with default values. Equivalent to creating
+ * an instance with GIT_DESCRIBE_FORMAT_OPTIONS_INIT.
+ *
+ * @param opts The `git_describe_format_options` struct to initialize.
+ * @param version The struct version; pass `GIT_DESCRIBE_FORMAT_OPTIONS_VERSION`.
+ * @return Zero on success; -1 on failure.
+ */
+GIT_EXTERN(int) git_describe_format_options_init(git_describe_format_options *opts, unsigned int version);
+
+/**
+ * A struct that stores the result of a describe operation.
+ */
+typedef struct git_describe_result git_describe_result;
+
+/**
+ * Describe a commit
+ *
+ * Perform the describe operation on the given committish object.
+ *
+ * @param result pointer to store the result. You must free this once
+ * you're done with it.
+ * @param committish a committish to describe
+ * @param opts the lookup options (or NULL for defaults)
+ * @return 0 or an error code.
+ */
+GIT_EXTERN(int) git_describe_commit(
+	git_describe_result **result,
+	git_object *committish,
+	git_describe_options *opts);
+
+/**
+ * Describe a commit
+ *
+ * Perform the describe operation on the current commit and the
+ * worktree. After performing describe on HEAD, a status is run and the
+ * description is considered to be dirty if there are.
+ *
+ * @param out pointer to store the result. You must free this once
+ * you're done with it.
+ * @param repo the repository in which to perform the describe
+ * @param opts the lookup options (or NULL for defaults)
+ * @return 0 or an error code.
+ */
+GIT_EXTERN(int) git_describe_workdir(
+	git_describe_result **out,
+	git_repository *repo,
+	git_describe_options *opts);
+
+/**
+ * Print the describe result to a buffer
+ *
+ * @param out The buffer to store the result
+ * @param result the result from `git_describe_commit()` or
+ * `git_describe_workdir()`.
+ * @param opts the formatting options (or NULL for defaults)
+ * @return 0 or an error code.
+ */
+GIT_EXTERN(int) git_describe_format(
+	git_buf *out,
+	const git_describe_result *result,
+	const git_describe_format_options *opts);
+
+/**
+ * Free the describe result.
+ *
+ * @param result The result to free.
+ */
+GIT_EXTERN(void) git_describe_result_free(git_describe_result *result);
+
+/** @} */
+GIT_END_DECL
+
+#endif

3rdparty/libgit2/include/git2/email.h

@@ -0,0 +1,127 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_email_h__
+#define INCLUDE_git_email_h__
+
+#include "common.h"
+
+/**
+ * @file git2/email.h
+ * @brief Git email formatting and application routines.
+ * @ingroup Git
+ * @{
+ */
+GIT_BEGIN_DECL
+
+/**
+ * Formatting options for diff e-mail generation
+ */
+typedef enum {
+	/** Normal patch, the default */
+	GIT_EMAIL_CREATE_DEFAULT = 0,
+
+	/** Do not include patch numbers in the subject prefix. */
+	GIT_EMAIL_CREATE_OMIT_NUMBERS = (1u << 0),
+
+	/**
+	 * Include numbers in the subject prefix even when the
+	 * patch is for a single commit (1/1).
+	 */
+	GIT_EMAIL_CREATE_ALWAYS_NUMBER = (1u << 1),
+
+	/** Do not perform rename or similarity detection. */
+	GIT_EMAIL_CREATE_NO_RENAMES = (1u << 2)
+} git_email_create_flags_t;
+
+/**
+ * Options for controlling the formatting of the generated e-mail.
+ */
+typedef struct {
+	unsigned int version;
+
+	/** see `git_email_create_flags_t` above */
+	uint32_t flags;
+
+	/** Options to use when creating diffs */
+	git_diff_options diff_opts;
+
+	/** Options for finding similarities within diffs */
+	git_diff_find_options diff_find_opts;
+
+	/**
+	 * The subject prefix, by default "PATCH".  If set to an empty
+	 * string ("") then only the patch numbers will be shown in the
+	 * prefix.  If the subject_prefix is empty and patch numbers
+	 * are not being shown, the prefix will be omitted entirely.
+	 */
+	const char *subject_prefix;
+
+	/**
+	 * The starting patch number; this cannot be 0.  By default,
+	 * this is 1.
+	 */
+	size_t start_number;
+
+	/** The "re-roll" number.  By default, there is no re-roll. */
+	size_t reroll_number;
+} git_email_create_options;
+
+/*
+ * By default, our options include rename detection and binary
+ * diffs to match `git format-patch`.
+ */
+#define GIT_EMAIL_CREATE_OPTIONS_VERSION 1
+#define GIT_EMAIL_CREATE_OPTIONS_INIT \
+{ \
+	GIT_EMAIL_CREATE_OPTIONS_VERSION, \
+	GIT_EMAIL_CREATE_DEFAULT, \
+	{ GIT_DIFF_OPTIONS_VERSION, GIT_DIFF_SHOW_BINARY, GIT_SUBMODULE_IGNORE_UNSPECIFIED, {NULL,0}, NULL, NULL, NULL, 3 }, \
+	GIT_DIFF_FIND_OPTIONS_INIT \
+}
+
+/**
+ * Create a diff for a commit in mbox format for sending via email.
+ *
+ * @param out buffer to store the e-mail patch in
+ * @param diff the changes to include in the email
+ * @param patch_idx the patch index
+ * @param patch_count the total number of patches that will be included
+ * @param commit_id the commit id for this change
+ * @param summary the commit message for this change
+ * @param body optional text to include above the diffstat
+ * @param author the person who authored this commit
+ * @param opts email creation options
+ */
+GIT_EXTERN(int) git_email_create_from_diff(
+	git_buf *out,
+	git_diff *diff,
+	size_t patch_idx,
+	size_t patch_count,
+	const git_oid *commit_id,
+	const char *summary,
+	const char *body,
+	const git_signature *author,
+	const git_email_create_options *opts);
+
+/**
+ * Create a diff for a commit in mbox format for sending via email.
+ * The commit must not be a merge commit.
+ *
+ * @param out buffer to store the e-mail patch in
+ * @param commit commit to create a patch for
+ * @param opts email creation options
+ */
+GIT_EXTERN(int) git_email_create_from_commit(
+	git_buf *out,
+	git_commit *commit,
+	const git_email_create_options *opts);
+
+GIT_END_DECL
+
+/** @} */
+
+#endif

3rdparty/libgit2/include/git2/errors.h

@@ -0,0 +1,143 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_errors_h__
+#define INCLUDE_git_errors_h__
+
+#include "common.h"
+
+/**
+ * @file git2/errors.h
+ * @brief Git error handling routines and variables
+ * @ingroup Git
+ * @{
+ */
+GIT_BEGIN_DECL
+
+/** Generic return codes */
+typedef enum {
+	GIT_OK              =  0,		/**< No error */
+
+	GIT_ERROR           = -1,		/**< Generic error */
+	GIT_ENOTFOUND       = -3,		/**< Requested object could not be found */
+	GIT_EEXISTS         = -4,		/**< Object exists preventing operation */
+	GIT_EAMBIGUOUS      = -5,		/**< More than one object matches */
+	GIT_EBUFS           = -6,		/**< Output buffer too short to hold data */
+
+	/**
+	 * GIT_EUSER is a special error that is never generated by libgit2
+	 * code.  You can return it from a callback (e.g to stop an iteration)
+	 * to know that it was generated by the callback and not by libgit2.
+	 */
+	GIT_EUSER           = -7,
+
+	GIT_EBAREREPO       =  -8,	/**< Operation not allowed on bare repository */
+	GIT_EUNBORNBRANCH   =  -9,	/**< HEAD refers to branch with no commits */
+	GIT_EUNMERGED       = -10,	/**< Merge in progress prevented operation */
+	GIT_ENONFASTFORWARD = -11,	/**< Reference was not fast-forwardable */
+	GIT_EINVALIDSPEC    = -12,	/**< Name/ref spec was not in a valid format */
+	GIT_ECONFLICT       = -13,	/**< Checkout conflicts prevented operation */
+	GIT_ELOCKED         = -14,	/**< Lock file prevented operation */
+	GIT_EMODIFIED       = -15,	/**< Reference value does not match expected */
+	GIT_EAUTH           = -16,	/**< Authentication error */
+	GIT_ECERTIFICATE    = -17,	/**< Server certificate is invalid */
+	GIT_EAPPLIED        = -18,	/**< Patch/merge has already been applied */
+	GIT_EPEEL           = -19,	/**< The requested peel operation is not possible */
+	GIT_EEOF            = -20,	/**< Unexpected EOF */
+	GIT_EINVALID        = -21,	/**< Invalid operation or input */
+	GIT_EUNCOMMITTED    = -22,	/**< Uncommitted changes in index prevented operation */
+	GIT_EDIRECTORY      = -23,	/**< The operation is not valid for a directory */
+	GIT_EMERGECONFLICT  = -24,	/**< A merge conflict exists and cannot continue */
+
+	GIT_PASSTHROUGH     = -30,	/**< A user-configured callback refused to act */
+	GIT_ITEROVER        = -31,	/**< Signals end of iteration with iterator */
+	GIT_RETRY           = -32,	/**< Internal only */
+	GIT_EMISMATCH       = -33,	/**< Hashsum mismatch in object */
+	GIT_EINDEXDIRTY     = -34,	/**< Unsaved changes in the index would be overwritten */
+	GIT_EAPPLYFAIL      = -35,	/**< Patch application failed */
+	GIT_EOWNER          = -36,	/**< The object is not owned by the current user */
+	GIT_TIMEOUT         = -37,	/**< The operation timed out */
+	GIT_EUNCHANGED      = -38,	/**< There were no changes */
+	GIT_ENOTSUPPORTED   = -39,	/**< An option is not supported */
+	GIT_EREADONLY       = -40	/**< The subject is read-only */
+} git_error_code;
+
+/**
+ * Structure to store extra details of the last error that occurred.
+ *
+ * This is kept on a per-thread basis if GIT_THREADS was defined when the
+ * library was build, otherwise one is kept globally for the library
+ */
+typedef struct {
+	char *message;
+	int klass;
+} git_error;
+
+/** Error classes */
+typedef enum {
+	GIT_ERROR_NONE = 0,
+	GIT_ERROR_NOMEMORY,
+	GIT_ERROR_OS,
+	GIT_ERROR_INVALID,
+	GIT_ERROR_REFERENCE,
+	GIT_ERROR_ZLIB,
+	GIT_ERROR_REPOSITORY,
+	GIT_ERROR_CONFIG,
+	GIT_ERROR_REGEX,
+	GIT_ERROR_ODB,
+	GIT_ERROR_INDEX,
+	GIT_ERROR_OBJECT,
+	GIT_ERROR_NET,
+	GIT_ERROR_TAG,
+	GIT_ERROR_TREE,
+	GIT_ERROR_INDEXER,
+	GIT_ERROR_SSL,
+	GIT_ERROR_SUBMODULE,
+	GIT_ERROR_THREAD,
+	GIT_ERROR_STASH,
+	GIT_ERROR_CHECKOUT,
+	GIT_ERROR_FETCHHEAD,
+	GIT_ERROR_MERGE,
+	GIT_ERROR_SSH,
+	GIT_ERROR_FILTER,
+	GIT_ERROR_REVERT,
+	GIT_ERROR_CALLBACK,
+	GIT_ERROR_CHERRYPICK,
+	GIT_ERROR_DESCRIBE,
+	GIT_ERROR_REBASE,
+	GIT_ERROR_FILESYSTEM,
+	GIT_ERROR_PATCH,
+	GIT_ERROR_WORKTREE,
+	GIT_ERROR_SHA,
+	GIT_ERROR_HTTP,
+	GIT_ERROR_INTERNAL,
+	GIT_ERROR_GRAFTS
+} git_error_t;
+
+/**
+ * Return the last `git_error` object that was generated for the
+ * current thread.
+ *
+ * This function will never return NULL.
+ *
+ * Callers should not rely on this to determine whether an error has
+ * occurred. For error checking, callers should examine the return
+ * codes of libgit2 functions.
+ *
+ * This call can only reliably report error messages when an error
+ * has occurred. (It may contain stale information if it is called
+ * after a different function that succeeds.)
+ *
+ * The memory for this object is managed by libgit2. It should not
+ * be freed.
+ *
+ * @return A git_error object.
+ */
+GIT_EXTERN(const git_error *) git_error_last(void);
+
+/** @} */
+GIT_END_DECL
+#endif

3rdparty/libgit2/include/git2/experimental.h

@@ -0,0 +1,13 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+
+#ifndef INCLUDE_experimental_h__
+#define INCLUDE_experimental_h__
+
+/* #undef GIT_EXPERIMENTAL_SHA256 */
+
+#endif

3rdparty/libgit2/include/git2/filter.h

@@ -0,0 +1,276 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_filter_h__
+#define INCLUDE_git_filter_h__
+
+#include "common.h"
+#include "types.h"
+#include "oid.h"
+#include "buffer.h"
+
+/**
+ * @file git2/filter.h
+ * @brief Git filter APIs
+ *
+ * @ingroup Git
+ * @{
+ */
+GIT_BEGIN_DECL
+
+/**
+ * Filters are applied in one of two directions: smudging - which is
+ * exporting a file from the Git object database to the working directory,
+ * and cleaning - which is importing a file from the working directory to
+ * the Git object database.  These values control which direction of
+ * change is being applied.
+ */
+typedef enum {
+	GIT_FILTER_TO_WORKTREE = 0,
+	GIT_FILTER_SMUDGE = GIT_FILTER_TO_WORKTREE,
+	GIT_FILTER_TO_ODB = 1,
+	GIT_FILTER_CLEAN = GIT_FILTER_TO_ODB
+} git_filter_mode_t;
+
+/**
+ * Filter option flags.
+ */
+typedef enum {
+	GIT_FILTER_DEFAULT = 0u,
+
+	/** Don't error for `safecrlf` violations, allow them to continue. */
+	GIT_FILTER_ALLOW_UNSAFE = (1u << 0),
+
+	/** Don't load `/etc/gitattributes` (or the system equivalent) */
+	GIT_FILTER_NO_SYSTEM_ATTRIBUTES = (1u << 1),
+
+	/** Load attributes from `.gitattributes` in the root of HEAD */
+	GIT_FILTER_ATTRIBUTES_FROM_HEAD = (1u << 2),
+
+	/**
+	 * Load attributes from `.gitattributes` in a given commit.
+	 * This can only be specified in a `git_filter_options`.
+	 */
+	GIT_FILTER_ATTRIBUTES_FROM_COMMIT = (1u << 3)
+} git_filter_flag_t;
+
+/**
+ * Filtering options
+ */
+typedef struct {
+	unsigned int version;
+
+	/** See `git_filter_flag_t` above */
+	uint32_t flags;
+
+#ifdef GIT_DEPRECATE_HARD
+	void *reserved;
+#else
+	git_oid *commit_id;
+#endif
+
+	/**
+	 * The commit to load attributes from, when
+	 * `GIT_FILTER_ATTRIBUTES_FROM_COMMIT` is specified.
+	 */
+	git_oid attr_commit_id;
+} git_filter_options;
+
+ #define GIT_FILTER_OPTIONS_VERSION 1
+ #define GIT_FILTER_OPTIONS_INIT {GIT_FILTER_OPTIONS_VERSION}
+
+/**
+ * A filter that can transform file data
+ *
+ * This represents a filter that can be used to transform or even replace
+ * file data.  Libgit2 includes one built in filter and it is possible to
+ * write your own (see git2/sys/filter.h for information on that).
+ *
+ * The two builtin filters are:
+ *
+ * * "crlf" which uses the complex rules with the "text", "eol", and
+ *   "crlf" file attributes to decide how to convert between LF and CRLF
+ *   line endings
+ * * "ident" which replaces "$Id$" in a blob with "$Id: <blob OID>$" upon
+ *   checkout and replaced "$Id: <anything>$" with "$Id$" on checkin.
+ */
+typedef struct git_filter git_filter;
+
+/**
+ * List of filters to be applied
+ *
+ * This represents a list of filters to be applied to a file / blob.  You
+ * can build the list with one call, apply it with another, and dispose it
+ * with a third.  In typical usage, there are not many occasions where a
+ * git_filter_list is needed directly since the library will generally
+ * handle conversions for you, but it can be convenient to be able to
+ * build and apply the list sometimes.
+ */
+typedef struct git_filter_list git_filter_list;
+
+/**
+ * Load the filter list for a given path.
+ *
+ * This will return 0 (success) but set the output git_filter_list to NULL
+ * if no filters are requested for the given file.
+ *
+ * @param filters Output newly created git_filter_list (or NULL)
+ * @param repo Repository object that contains `path`
+ * @param blob The blob to which the filter will be applied (if known)
+ * @param path Relative path of the file to be filtered
+ * @param mode Filtering direction (WT->ODB or ODB->WT)
+ * @param flags Combination of `git_filter_flag_t` flags
+ * @return 0 on success (which could still return NULL if no filters are
+ *         needed for the requested file), <0 on error
+ */
+GIT_EXTERN(int) git_filter_list_load(
+	git_filter_list **filters,
+	git_repository *repo,
+	git_blob *blob, /* can be NULL */
+	const char *path,
+	git_filter_mode_t mode,
+	uint32_t flags);
+
+/**
+ * Load the filter list for a given path.
+ *
+ * This will return 0 (success) but set the output git_filter_list to NULL
+ * if no filters are requested for the given file.
+ *
+ * @param filters Output newly created git_filter_list (or NULL)
+ * @param repo Repository object that contains `path`
+ * @param blob The blob to which the filter will be applied (if known)
+ * @param path Relative path of the file to be filtered
+ * @param mode Filtering direction (WT->ODB or ODB->WT)
+ * @param opts The `git_filter_options` to use when loading filters
+ * @return 0 on success (which could still return NULL if no filters are
+ *         needed for the requested file), <0 on error
+ */
+GIT_EXTERN(int) git_filter_list_load_ext(
+	git_filter_list **filters,
+	git_repository *repo,
+	git_blob *blob,
+	const char *path,
+	git_filter_mode_t mode,
+	git_filter_options *opts);
+
+/**
+ * Query the filter list to see if a given filter (by name) will run.
+ * The built-in filters "crlf" and "ident" can be queried, otherwise this
+ * is the name of the filter specified by the filter attribute.
+ *
+ * This will return 0 if the given filter is not in the list, or 1 if
+ * the filter will be applied.
+ *
+ * @param filters A loaded git_filter_list (or NULL)
+ * @param name The name of the filter to query
+ * @return 1 if the filter is in the list, 0 otherwise
+ */
+GIT_EXTERN(int) git_filter_list_contains(
+	git_filter_list *filters,
+	const char *name);
+
+/**
+ * Apply filter list to a data buffer.
+ *
+ * @param out Buffer to store the result of the filtering
+ * @param filters A loaded git_filter_list (or NULL)
+ * @param in Buffer containing the data to filter
+ * @param in_len The length of the input buffer
+ * @return 0 on success, an error code otherwise
+ */
+GIT_EXTERN(int) git_filter_list_apply_to_buffer(
+	git_buf *out,
+	git_filter_list *filters,
+	const char *in,
+	size_t in_len);
+
+/**
+ * Apply a filter list to the contents of a file on disk
+ *
+ * @param out buffer into which to store the filtered file
+ * @param filters the list of filters to apply
+ * @param repo the repository in which to perform the filtering
+ * @param path the path of the file to filter, a relative path will be
+ * taken as relative to the workdir
+ * @return 0 or an error code.
+ */
+GIT_EXTERN(int) git_filter_list_apply_to_file(
+	git_buf *out,
+	git_filter_list *filters,
+	git_repository *repo,
+	const char *path);
+
+/**
+ * Apply a filter list to the contents of a blob
+ *
+ * @param out buffer into which to store the filtered file
+ * @param filters the list of filters to apply
+ * @param blob the blob to filter
+ * @return 0 or an error code.
+ */
+GIT_EXTERN(int) git_filter_list_apply_to_blob(
+	git_buf *out,
+	git_filter_list *filters,
+	git_blob *blob);
+
+/**
+ * Apply a filter list to an arbitrary buffer as a stream
+ *
+ * @param filters the list of filters to apply
+ * @param buffer the buffer to filter
+ * @param len the size of the buffer
+ * @param target the stream into which the data will be written
+ * @return 0 or an error code.
+ */
+GIT_EXTERN(int) git_filter_list_stream_buffer(
+	git_filter_list *filters,
+	const char *buffer,
+	size_t len,
+	git_writestream *target);
+
+/**
+ * Apply a filter list to a file as a stream
+ *
+ * @param filters the list of filters to apply
+ * @param repo the repository in which to perform the filtering
+ * @param path the path of the file to filter, a relative path will be
+ * taken as relative to the workdir
+ * @param target the stream into which the data will be written
+ * @return 0 or an error code.
+ */
+GIT_EXTERN(int) git_filter_list_stream_file(
+	git_filter_list *filters,
+	git_repository *repo,
+	const char *path,
+	git_writestream *target);
+
+/**
+ * Apply a filter list to a blob as a stream
+ *
+ * @param filters the list of filters to apply
+ * @param blob the blob to filter
+ * @param target the stream into which the data will be written
+ * @return 0 or an error code.
+ */
+GIT_EXTERN(int) git_filter_list_stream_blob(
+	git_filter_list *filters,
+	git_blob *blob,
+	git_writestream *target);
+
+/**
+ * Free a git_filter_list
+ *
+ * @param filters A git_filter_list created by `git_filter_list_load`
+ */
+GIT_EXTERN(void) git_filter_list_free(git_filter_list *filters);
+
+
+GIT_END_DECL
+
+/** @} */
+
+#endif

3rdparty/libgit2/include/git2/global.h

@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_global_h__
+#define INCLUDE_git_global_h__
+
+#include "common.h"
+
+GIT_BEGIN_DECL
+
+/**
+ * Init the global state
+ *
+ * This function must be called before any other libgit2 function in
+ * order to set up global state and threading.
+ *
+ * This function may be called multiple times - it will return the number
+ * of times the initialization has been called (including this one) that have
+ * not subsequently been shutdown.
+ *
+ * @return the number of initializations of the library, or an error code.
+ */
+GIT_EXTERN(int) git_libgit2_init(void);
+
+/**
+ * Shutdown the global state
+ *
+ * Clean up the global state and threading context after calling it as
+ * many times as `git_libgit2_init()` was called - it will return the
+ * number of remainining initializations that have not been shutdown
+ * (after this one).
+ * 
+ * @return the number of remaining initializations of the library, or an
+ * error code.
+ */
+GIT_EXTERN(int) git_libgit2_shutdown(void);
+
+/** @} */
+GIT_END_DECL
+#endif
+

3rdparty/libgit2/include/git2/graph.h

@@ -0,0 +1,77 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_graph_h__
+#define INCLUDE_git_graph_h__
+
+#include "common.h"
+#include "types.h"
+#include "oid.h"
+
+/**
+ * @file git2/graph.h
+ * @brief Git graph traversal routines
+ * @defgroup git_revwalk Git graph traversal routines
+ * @ingroup Git
+ * @{
+ */
+GIT_BEGIN_DECL
+
+/**
+ * Count the number of unique commits between two commit objects
+ *
+ * There is no need for branches containing the commits to have any
+ * upstream relationship, but it helps to think of one as a branch and
+ * the other as its upstream, the `ahead` and `behind` values will be
+ * what git would report for the branches.
+ *
+ * @param ahead number of unique from commits in `upstream`
+ * @param behind number of unique from commits in `local`
+ * @param repo the repository where the commits exist
+ * @param local the commit for local
+ * @param upstream the commit for upstream
+ * @return 0 or an error code.
+ */
+GIT_EXTERN(int) git_graph_ahead_behind(size_t *ahead, size_t *behind, git_repository *repo, const git_oid *local, const git_oid *upstream);
+
+
+/**
+ * Determine if a commit is the descendant of another commit.
+ *
+ * Note that a commit is not considered a descendant of itself, in contrast
+ * to `git merge-base --is-ancestor`.
+ *
+ * @param repo the repository where the commits exist
+ * @param commit a previously loaded commit
+ * @param ancestor a potential ancestor commit
+ * @return 1 if the given commit is a descendant of the potential ancestor,
+ * 0 if not, error code otherwise.
+ */
+GIT_EXTERN(int) git_graph_descendant_of(
+	git_repository *repo,
+	const git_oid *commit,
+	const git_oid *ancestor);
+
+/**
+ * Determine if a commit is reachable from any of a list of commits by
+ * following parent edges.
+ *
+ * @param repo the repository where the commits exist
+ * @param commit a previously loaded commit
+ * @param length the number of commits in the provided `descendant_array`
+ * @param descendant_array oids of the commits
+ * @return 1 if the given commit is an ancestor of any of the given potential
+ * descendants, 0 if not, error code otherwise.
+ */
+GIT_EXTERN(int) git_graph_reachable_from_any(
+	git_repository *repo,
+	const git_oid *commit,
+	const git_oid descendant_array[],
+	size_t length);
+
+/** @} */
+GIT_END_DECL
+#endif

3rdparty/libgit2/include/git2/ignore.h

@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_ignore_h__
+#define INCLUDE_git_ignore_h__
+
+#include "common.h"
+#include "types.h"
+
+GIT_BEGIN_DECL
+
+/**
+ * Add ignore rules for a repository.
+ *
+ * Excludesfile rules (i.e. .gitignore rules) are generally read from
+ * .gitignore files in the repository tree or from a shared system file
+ * only if a "core.excludesfile" config value is set.  The library also
+ * keeps a set of per-repository internal ignores that can be configured
+ * in-memory and will not persist.  This function allows you to add to
+ * that internal rules list.
+ *
+ * Example usage:
+ *
+ *     error = git_ignore_add_rule(myrepo, "*.c\ndir/\nFile with space\n");
+ *
+ * This would add three rules to the ignores.
+ *
+ * @param repo The repository to add ignore rules to.
+ * @param rules Text of rules, the contents to add on a .gitignore file.
+ *              It is okay to have multiple rules in the text; if so,
+ *              each rule should be terminated with a newline.
+ * @return 0 on success
+ */
+GIT_EXTERN(int) git_ignore_add_rule(
+	git_repository *repo,
+	const char *rules);
+
+/**
+ * Clear ignore rules that were explicitly added.
+ *
+ * Resets to the default internal ignore rules.  This will not turn off
+ * rules in .gitignore files that actually exist in the filesystem.
+ *
+ * The default internal ignores ignore ".", ".." and ".git" entries.
+ *
+ * @param repo The repository to remove ignore rules from.
+ * @return 0 on success
+ */
+GIT_EXTERN(int) git_ignore_clear_internal_rules(
+	git_repository *repo);
+
+/**
+ * Test if the ignore rules apply to a given path.
+ *
+ * This function checks the ignore rules to see if they would apply to the
+ * given file.  This indicates if the file would be ignored regardless of
+ * whether the file is already in the index or committed to the repository.
+ *
+ * One way to think of this is if you were to do "git check-ignore --no-index"
+ * on the given file, would it be shown or not?
+ *
+ * @param ignored boolean returning 0 if the file is not ignored, 1 if it is
+ * @param repo a repository object
+ * @param path the file to check ignores for, relative to the repo's workdir.
+ * @return 0 if ignore rules could be processed for the file (regardless
+ *         of whether it exists or not), or an error < 0 if they could not.
+ */
+GIT_EXTERN(int) git_ignore_path_is_ignored(
+	int *ignored,
+	git_repository *repo,
+	const char *path);
+
+GIT_END_DECL
+
+#endif

3rdparty/libgit2/include/git2/index.h

@@ -0,0 +1,848 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_index_h__
+#define INCLUDE_git_index_h__
+
+#include "common.h"
+#include "indexer.h"
+#include "types.h"
+#include "oid.h"
+#include "strarray.h"
+
+/**
+ * @file git2/index.h
+ * @brief Git index parsing and manipulation routines
+ * @defgroup git_index Git index parsing and manipulation routines
+ * @ingroup Git
+ * @{
+ */
+GIT_BEGIN_DECL
+
+/** Time structure used in a git index entry */
+typedef struct {
+	int32_t seconds;
+	/* nsec should not be stored as time_t compatible */
+	uint32_t nanoseconds;
+} git_index_time;
+
+/**
+ * In-memory representation of a file entry in the index.
+ *
+ * This is a public structure that represents a file entry in the index.
+ * The meaning of the fields corresponds to core Git's documentation (in
+ * "Documentation/technical/index-format.txt").
+ *
+ * The `flags` field consists of a number of bit fields which can be
+ * accessed via the first set of `GIT_INDEX_ENTRY_...` bitmasks below.
+ * These flags are all read from and persisted to disk.
+ *
+ * The `flags_extended` field also has a number of bit fields which can be
+ * accessed via the later `GIT_INDEX_ENTRY_...` bitmasks below.  Some of
+ * these flags are read from and written to disk, but some are set aside
+ * for in-memory only reference.
+ *
+ * Note that the time and size fields are truncated to 32 bits. This
+ * is enough to detect changes, which is enough for the index to
+ * function as a cache, but it should not be taken as an authoritative
+ * source for that data.
+ */
+typedef struct git_index_entry {
+	git_index_time ctime;
+	git_index_time mtime;
+
+	uint32_t dev;
+	uint32_t ino;
+	uint32_t mode;
+	uint32_t uid;
+	uint32_t gid;
+	uint32_t file_size;
+
+	git_oid id;
+
+	uint16_t flags;
+	uint16_t flags_extended;
+
+	const char *path;
+} git_index_entry;
+
+/**
+ * Bitmasks for on-disk fields of `git_index_entry`'s `flags`
+ *
+ * These bitmasks match the four fields in the `git_index_entry` `flags`
+ * value both in memory and on disk.  You can use them to interpret the
+ * data in the `flags`.
+ */
+
+#define GIT_INDEX_ENTRY_NAMEMASK  (0x0fff)
+#define GIT_INDEX_ENTRY_STAGEMASK (0x3000)
+#define GIT_INDEX_ENTRY_STAGESHIFT 12
+
+/**
+ * Flags for index entries
+ */
+typedef enum {
+	GIT_INDEX_ENTRY_EXTENDED  = (0x4000),
+	GIT_INDEX_ENTRY_VALID     = (0x8000)
+} git_index_entry_flag_t;
+
+#define GIT_INDEX_ENTRY_STAGE(E) \
+	(((E)->flags & GIT_INDEX_ENTRY_STAGEMASK) >> GIT_INDEX_ENTRY_STAGESHIFT)
+
+#define GIT_INDEX_ENTRY_STAGE_SET(E,S) do { \
+	(E)->flags = ((E)->flags & ~GIT_INDEX_ENTRY_STAGEMASK) | \
+		(((S) & 0x03) << GIT_INDEX_ENTRY_STAGESHIFT); } while (0)
+
+/**
+ * Bitmasks for on-disk fields of `git_index_entry`'s `flags_extended`
+ *
+ * In memory, the `flags_extended` fields are divided into two parts: the
+ * fields that are read from and written to disk, and other fields that
+ * in-memory only and used by libgit2.  Only the flags in
+ * `GIT_INDEX_ENTRY_EXTENDED_FLAGS` will get saved on-disk.
+ *
+ * Thee first three bitmasks match the three fields in the
+ * `git_index_entry` `flags_extended` value that belong on disk.  You
+ * can use them to interpret the data in the `flags_extended`.
+ *
+ * The rest of the bitmasks match the other fields in the `git_index_entry`
+ * `flags_extended` value that are only used in-memory by libgit2.
+ * You can use them to interpret the data in the `flags_extended`.
+ *
+ */
+typedef enum {
+	GIT_INDEX_ENTRY_INTENT_TO_ADD  =  (1 << 13),
+	GIT_INDEX_ENTRY_SKIP_WORKTREE  =  (1 << 14),
+
+	GIT_INDEX_ENTRY_EXTENDED_FLAGS =  (GIT_INDEX_ENTRY_INTENT_TO_ADD | GIT_INDEX_ENTRY_SKIP_WORKTREE),
+
+	GIT_INDEX_ENTRY_UPTODATE       =  (1 << 2)
+} git_index_entry_extended_flag_t;
+
+/** Capabilities of system that affect index actions. */
+typedef enum {
+	GIT_INDEX_CAPABILITY_IGNORE_CASE = 1,
+	GIT_INDEX_CAPABILITY_NO_FILEMODE = 2,
+	GIT_INDEX_CAPABILITY_NO_SYMLINKS = 4,
+	GIT_INDEX_CAPABILITY_FROM_OWNER  = -1
+} git_index_capability_t;
+
+
+/** Callback for APIs that add/remove/update files matching pathspec */
+typedef int GIT_CALLBACK(git_index_matched_path_cb)(
+	const char *path, const char *matched_pathspec, void *payload);
+
+/** Flags for APIs that add files matching pathspec */
+typedef enum {
+	GIT_INDEX_ADD_DEFAULT = 0,
+	GIT_INDEX_ADD_FORCE = (1u << 0),
+	GIT_INDEX_ADD_DISABLE_PATHSPEC_MATCH = (1u << 1),
+	GIT_INDEX_ADD_CHECK_PATHSPEC = (1u << 2)
+} git_index_add_option_t;
+
+/** Git index stage states */
+typedef enum {
+	/**
+	 * Match any index stage.
+	 *
+	 * Some index APIs take a stage to match; pass this value to match
+	 * any entry matching the path regardless of stage.
+	 */
+	GIT_INDEX_STAGE_ANY = -1,
+
+	/** A normal staged file in the index. */
+	GIT_INDEX_STAGE_NORMAL = 0,
+
+	/** The ancestor side of a conflict. */
+	GIT_INDEX_STAGE_ANCESTOR = 1,
+
+	/** The "ours" side of a conflict. */
+	GIT_INDEX_STAGE_OURS = 2,
+
+	/** The "theirs" side of a conflict. */
+	GIT_INDEX_STAGE_THEIRS = 3
+} git_index_stage_t;
+
+/**
+ * Create a new bare Git index object as a memory representation
+ * of the Git index file in 'index_path', without a repository
+ * to back it.
+ *
+ * Since there is no ODB or working directory behind this index,
+ * any Index methods which rely on these (e.g. index_add_bypath)
+ * will fail with the GIT_ERROR error code.
+ *
+ * If you need to access the index of an actual repository,
+ * use the `git_repository_index` wrapper.
+ *
+ * The index must be freed once it's no longer in use.
+ *
+ * @param out the pointer for the new index
+ * @param index_path the path to the index file in disk
+ * @return 0 or an error code
+ */
+
+#ifdef GIT_EXPERIMENTAL_SHA256
+GIT_EXTERN(int) git_index_open(git_index **out, const char *index_path, git_oid_t oid_type);
+#else
+GIT_EXTERN(int) git_index_open(git_index **out, const char *index_path);
+#endif
+
+/**
+ * Create an in-memory index object.
+ *
+ * This index object cannot be read/written to the filesystem,
+ * but may be used to perform in-memory index operations.
+ *
+ * The index must be freed once it's no longer in use.
+ *
+ * @param out the pointer for the new index
+ * @return 0 or an error code
+ */
+#ifdef GIT_EXPERIMENTAL_SHA256
+GIT_EXTERN(int) git_index_new(git_index **out, git_oid_t oid_type);
+#else
+GIT_EXTERN(int) git_index_new(git_index **out);
+#endif
+
+/**
+ * Free an existing index object.
+ *
+ * @param index an existing index object
+ */
+GIT_EXTERN(void) git_index_free(git_index *index);
+
+/**
+ * Get the repository this index relates to
+ *
+ * @param index The index
+ * @return A pointer to the repository
+ */
+GIT_EXTERN(git_repository *) git_index_owner(const git_index *index);
+
+/**
+ * Read index capabilities flags.
+ *
+ * @param index An existing index object
+ * @return A combination of GIT_INDEX_CAPABILITY values
+ */
+GIT_EXTERN(int) git_index_caps(const git_index *index);
+
+/**
+ * Set index capabilities flags.
+ *
+ * If you pass `GIT_INDEX_CAPABILITY_FROM_OWNER` for the caps, then
+ * capabilities will be read from the config of the owner object,
+ * looking at `core.ignorecase`, `core.filemode`, `core.symlinks`.
+ *
+ * @param index An existing index object
+ * @param caps A combination of GIT_INDEX_CAPABILITY values
+ * @return 0 on success, -1 on failure
+ */
+GIT_EXTERN(int) git_index_set_caps(git_index *index, int caps);
+
+/**
+ * Get index on-disk version.
+ *
+ * Valid return values are 2, 3, or 4.  If 3 is returned, an index
+ * with version 2 may be written instead, if the extension data in
+ * version 3 is not necessary.
+ *
+ * @param index An existing index object
+ * @return the index version
+ */
+GIT_EXTERN(unsigned int) git_index_version(git_index *index);
+
+/**
+ * Set index on-disk version.
+ *
+ * Valid values are 2, 3, or 4.  If 2 is given, git_index_write may
+ * write an index with version 3 instead, if necessary to accurately
+ * represent the index.
+ *
+ * @param index An existing index object
+ * @param version The new version number
+ * @return 0 on success, -1 on failure
+ */
+GIT_EXTERN(int) git_index_set_version(git_index *index, unsigned int version);
+
+/**
+ * Update the contents of an existing index object in memory by reading
+ * from the hard disk.
+ *
+ * If `force` is true, this performs a "hard" read that discards in-memory
+ * changes and always reloads the on-disk index data.  If there is no
+ * on-disk version, the index will be cleared.
+ *
+ * If `force` is false, this does a "soft" read that reloads the index
+ * data from disk only if it has changed since the last time it was
+ * loaded.  Purely in-memory index data will be untouched.  Be aware: if
+ * there are changes on disk, unwritten in-memory changes are discarded.
+ *
+ * @param index an existing index object
+ * @param force if true, always reload, vs. only read if file has changed
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_index_read(git_index *index, int force);
+
+/**
+ * Write an existing index object from memory back to disk
+ * using an atomic file lock.
+ *
+ * @param index an existing index object
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_index_write(git_index *index);
+
+/**
+ * Get the full path to the index file on disk.
+ *
+ * @param index an existing index object
+ * @return path to index file or NULL for in-memory index
+ */
+GIT_EXTERN(const char *) git_index_path(const git_index *index);
+
+#ifndef GIT_DEPRECATE_HARD
+/**
+ * Get the checksum of the index
+ *
+ * This checksum is the SHA-1 hash over the index file (except the
+ * last 20 bytes which are the checksum itself). In cases where the
+ * index does not exist on-disk, it will be zeroed out.
+ *
+ * @deprecated this function is deprecated with no replacement
+ * @param index an existing index object
+ * @return a pointer to the checksum of the index
+ */
+GIT_EXTERN(const git_oid *) git_index_checksum(git_index *index);
+#endif
+
+/**
+ * Read a tree into the index file with stats
+ *
+ * The current index contents will be replaced by the specified tree.
+ *
+ * @param index an existing index object
+ * @param tree tree to read
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_index_read_tree(git_index *index, const git_tree *tree);
+
+/**
+ * Write the index as a tree
+ *
+ * This method will scan the index and write a representation
+ * of its current state back to disk; it recursively creates
+ * tree objects for each of the subtrees stored in the index,
+ * but only returns the OID of the root tree. This is the OID
+ * that can be used e.g. to create a commit.
+ *
+ * The index instance cannot be bare, and needs to be associated
+ * to an existing repository.
+ *
+ * The index must not contain any file in conflict.
+ *
+ * @param out Pointer where to store the OID of the written tree
+ * @param index Index to write
+ * @return 0 on success, GIT_EUNMERGED when the index is not clean
+ * or an error code
+ */
+GIT_EXTERN(int) git_index_write_tree(git_oid *out, git_index *index);
+
+/**
+ * Write the index as a tree to the given repository
+ *
+ * This method will do the same as `git_index_write_tree`, but
+ * letting the user choose the repository where the tree will
+ * be written.
+ *
+ * The index must not contain any file in conflict.
+ *
+ * @param out Pointer where to store OID of the written tree
+ * @param index Index to write
+ * @param repo Repository where to write the tree
+ * @return 0 on success, GIT_EUNMERGED when the index is not clean
+ * or an error code
+ */
+GIT_EXTERN(int) git_index_write_tree_to(git_oid *out, git_index *index, git_repository *repo);
+
+/**@}*/
+
+/** @name Raw Index Entry Functions
+ *
+ * These functions work on index entries, and allow for raw manipulation
+ * of the entries.
+ */
+/**@{*/
+
+/* Index entry manipulation */
+
+/**
+ * Get the count of entries currently in the index
+ *
+ * @param index an existing index object
+ * @return integer of count of current entries
+ */
+GIT_EXTERN(size_t) git_index_entrycount(const git_index *index);
+
+/**
+ * Clear the contents (all the entries) of an index object.
+ *
+ * This clears the index object in memory; changes must be explicitly
+ * written to disk for them to take effect persistently.
+ *
+ * @param index an existing index object
+ * @return 0 on success, error code < 0 on failure
+ */
+GIT_EXTERN(int) git_index_clear(git_index *index);
+
+/**
+ * Get a pointer to one of the entries in the index
+ *
+ * The entry is not modifiable and should not be freed.  Because the
+ * `git_index_entry` struct is a publicly defined struct, you should
+ * be able to make your own permanent copy of the data if necessary.
+ *
+ * @param index an existing index object
+ * @param n the position of the entry
+ * @return a pointer to the entry; NULL if out of bounds
+ */
+GIT_EXTERN(const git_index_entry *) git_index_get_byindex(
+	git_index *index, size_t n);
+
+/**
+ * Get a pointer to one of the entries in the index
+ *
+ * The entry is not modifiable and should not be freed.  Because the
+ * `git_index_entry` struct is a publicly defined struct, you should
+ * be able to make your own permanent copy of the data if necessary.
+ *
+ * @param index an existing index object
+ * @param path path to search
+ * @param stage stage to search
+ * @return a pointer to the entry; NULL if it was not found
+ */
+GIT_EXTERN(const git_index_entry *) git_index_get_bypath(
+	git_index *index, const char *path, int stage);
+
+/**
+ * Remove an entry from the index
+ *
+ * @param index an existing index object
+ * @param path path to search
+ * @param stage stage to search
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_index_remove(git_index *index, const char *path, int stage);
+
+/**
+ * Remove all entries from the index under a given directory
+ *
+ * @param index an existing index object
+ * @param dir container directory path
+ * @param stage stage to search
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_index_remove_directory(
+	git_index *index, const char *dir, int stage);
+
+/**
+ * Add or update an index entry from an in-memory struct
+ *
+ * If a previous index entry exists that has the same path and stage
+ * as the given 'source_entry', it will be replaced.  Otherwise, the
+ * 'source_entry' will be added.
+ *
+ * A full copy (including the 'path' string) of the given
+ * 'source_entry' will be inserted on the index.
+ *
+ * @param index an existing index object
+ * @param source_entry new entry object
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_index_add(git_index *index, const git_index_entry *source_entry);
+
+/**
+ * Return the stage number from a git index entry
+ *
+ * This entry is calculated from the entry's flag attribute like this:
+ *
+ *    (entry->flags & GIT_INDEX_ENTRY_STAGEMASK) >> GIT_INDEX_ENTRY_STAGESHIFT
+ *
+ * @param entry The entry
+ * @return the stage number
+ */
+GIT_EXTERN(int) git_index_entry_stage(const git_index_entry *entry);
+
+/**
+ * Return whether the given index entry is a conflict (has a high stage
+ * entry).  This is simply shorthand for `git_index_entry_stage > 0`.
+ *
+ * @param entry The entry
+ * @return 1 if the entry is a conflict entry, 0 otherwise
+ */
+GIT_EXTERN(int) git_index_entry_is_conflict(const git_index_entry *entry);
+
+/**@}*/
+
+/** @name Index Entry Iteration Functions
+ *
+ * These functions provide an iterator for index entries.
+ */
+/**@{*/
+
+/**
+ * Create an iterator that will return every entry contained in the
+ * index at the time of creation.  Entries are returned in order,
+ * sorted by path.  This iterator is backed by a snapshot that allows
+ * callers to modify the index while iterating without affecting the
+ * iterator.
+ *
+ * @param iterator_out The newly created iterator
+ * @param index The index to iterate
+ * @return 0 or an error code.
+ */
+GIT_EXTERN(int) git_index_iterator_new(
+	git_index_iterator **iterator_out,
+	git_index *index);
+
+/**
+ * Return the next index entry in-order from the iterator.
+ *
+ * @param out Pointer to store the index entry in
+ * @param iterator The iterator
+ * @return 0, GIT_ITEROVER on iteration completion or an error code
+ */
+GIT_EXTERN(int) git_index_iterator_next(
+	const git_index_entry **out,
+	git_index_iterator *iterator);
+
+/**
+ * Free the index iterator
+ *
+ * @param iterator The iterator to free
+ */
+GIT_EXTERN(void) git_index_iterator_free(git_index_iterator *iterator);
+
+/**@}*/
+
+/** @name Workdir Index Entry Functions
+ *
+ * These functions work on index entries specifically in the working
+ * directory (ie, stage 0).
+ */
+/**@{*/
+
+/**
+ * Add or update an index entry from a file on disk
+ *
+ * The file `path` must be relative to the repository's
+ * working folder and must be readable.
+ *
+ * This method will fail in bare index instances.
+ *
+ * This forces the file to be added to the index, not looking
+ * at gitignore rules.  Those rules can be evaluated through
+ * the git_status APIs (in status.h) before calling this.
+ *
+ * If this file currently is the result of a merge conflict, this
+ * file will no longer be marked as conflicting.  The data about
+ * the conflict will be moved to the "resolve undo" (REUC) section.
+ *
+ * @param index an existing index object
+ * @param path filename to add
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_index_add_bypath(git_index *index, const char *path);
+
+/**
+ * Add or update an index entry from a buffer in memory
+ *
+ * This method will create a blob in the repository that owns the
+ * index and then add the index entry to the index.  The `path` of the
+ * entry represents the position of the blob relative to the
+ * repository's root folder.
+ *
+ * If a previous index entry exists that has the same path as the
+ * given 'entry', it will be replaced.  Otherwise, the 'entry' will be
+ * added.
+ *
+ * This forces the file to be added to the index, not looking
+ * at gitignore rules.  Those rules can be evaluated through
+ * the git_status APIs (in status.h) before calling this.
+ *
+ * If this file currently is the result of a merge conflict, this
+ * file will no longer be marked as conflicting.  The data about
+ * the conflict will be moved to the "resolve undo" (REUC) section.
+ *
+ * @param index an existing index object
+ * @param entry filename to add
+ * @param buffer data to be written into the blob
+ * @param len length of the data
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_index_add_from_buffer(
+	git_index *index,
+	const git_index_entry *entry,
+	const void *buffer, size_t len);
+
+/**
+ * Remove an index entry corresponding to a file on disk
+ *
+ * The file `path` must be relative to the repository's
+ * working folder.  It may exist.
+ *
+ * If this file currently is the result of a merge conflict, this
+ * file will no longer be marked as conflicting.  The data about
+ * the conflict will be moved to the "resolve undo" (REUC) section.
+ *
+ * @param index an existing index object
+ * @param path filename to remove
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_index_remove_bypath(git_index *index, const char *path);
+
+/**
+ * Add or update index entries matching files in the working directory.
+ *
+ * This method will fail in bare index instances.
+ *
+ * The `pathspec` is a list of file names or shell glob patterns that will
+ * be matched against files in the repository's working directory.  Each
+ * file that matches will be added to the index (either updating an
+ * existing entry or adding a new entry).  You can disable glob expansion
+ * and force exact matching with the `GIT_INDEX_ADD_DISABLE_PATHSPEC_MATCH`
+ * flag.
+ *
+ * Files that are ignored will be skipped (unlike `git_index_add_bypath`).
+ * If a file is already tracked in the index, then it *will* be updated
+ * even if it is ignored.  Pass the `GIT_INDEX_ADD_FORCE` flag to skip
+ * the checking of ignore rules.
+ *
+ * To emulate `git add -A` and generate an error if the pathspec contains
+ * the exact path of an ignored file (when not using FORCE), add the
+ * `GIT_INDEX_ADD_CHECK_PATHSPEC` flag.  This checks that each entry
+ * in the `pathspec` that is an exact match to a filename on disk is
+ * either not ignored or already in the index.  If this check fails, the
+ * function will return GIT_EINVALIDSPEC.
+ *
+ * To emulate `git add -A` with the "dry-run" option, just use a callback
+ * function that always returns a positive value.  See below for details.
+ *
+ * If any files are currently the result of a merge conflict, those files
+ * will no longer be marked as conflicting.  The data about the conflicts
+ * will be moved to the "resolve undo" (REUC) section.
+ *
+ * If you provide a callback function, it will be invoked on each matching
+ * item in the working directory immediately *before* it is added to /
+ * updated in the index.  Returning zero will add the item to the index,
+ * greater than zero will skip the item, and less than zero will abort the
+ * scan and return that value to the caller.
+ *
+ * @param index an existing index object
+ * @param pathspec array of path patterns
+ * @param flags combination of git_index_add_option_t flags
+ * @param callback notification callback for each added/updated path (also
+ *                 gets index of matching pathspec entry); can be NULL;
+ *                 return 0 to add, >0 to skip, <0 to abort scan.
+ * @param payload payload passed through to callback function
+ * @return 0 on success, negative callback return value, or error code
+ */
+GIT_EXTERN(int) git_index_add_all(
+	git_index *index,
+	const git_strarray *pathspec,
+	unsigned int flags,
+	git_index_matched_path_cb callback,
+	void *payload);
+
+/**
+ * Remove all matching index entries.
+ *
+ * If you provide a callback function, it will be invoked on each matching
+ * item in the index immediately *before* it is removed.  Return 0 to
+ * remove the item, > 0 to skip the item, and < 0 to abort the scan.
+ *
+ * @param index An existing index object
+ * @param pathspec array of path patterns
+ * @param callback notification callback for each removed path (also
+ *                 gets index of matching pathspec entry); can be NULL;
+ *                 return 0 to add, >0 to skip, <0 to abort scan.
+ * @param payload payload passed through to callback function
+ * @return 0 on success, negative callback return value, or error code
+ */
+GIT_EXTERN(int) git_index_remove_all(
+	git_index *index,
+	const git_strarray *pathspec,
+	git_index_matched_path_cb callback,
+	void *payload);
+
+/**
+ * Update all index entries to match the working directory
+ *
+ * This method will fail in bare index instances.
+ *
+ * This scans the existing index entries and synchronizes them with the
+ * working directory, deleting them if the corresponding working directory
+ * file no longer exists otherwise updating the information (including
+ * adding the latest version of file to the ODB if needed).
+ *
+ * If you provide a callback function, it will be invoked on each matching
+ * item in the index immediately *before* it is updated (either refreshed
+ * or removed depending on working directory state).  Return 0 to proceed
+ * with updating the item, > 0 to skip the item, and < 0 to abort the scan.
+ *
+ * @param index An existing index object
+ * @param pathspec array of path patterns
+ * @param callback notification callback for each updated path (also
+ *                 gets index of matching pathspec entry); can be NULL;
+ *                 return 0 to add, >0 to skip, <0 to abort scan.
+ * @param payload payload passed through to callback function
+ * @return 0 on success, negative callback return value, or error code
+ */
+GIT_EXTERN(int) git_index_update_all(
+	git_index *index,
+	const git_strarray *pathspec,
+	git_index_matched_path_cb callback,
+	void *payload);
+
+/**
+ * Find the first position of any entries which point to given
+ * path in the Git index.
+ *
+ * @param at_pos the address to which the position of the index entry is written (optional)
+ * @param index an existing index object
+ * @param path path to search
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_index_find(size_t *at_pos, git_index *index, const char *path);
+
+/**
+ * Find the first position of any entries matching a prefix. To find the first position
+ * of a path inside a given folder, suffix the prefix with a '/'.
+ *
+ * @param at_pos the address to which the position of the index entry is written (optional)
+ * @param index an existing index object
+ * @param prefix the prefix to search for
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_index_find_prefix(size_t *at_pos, git_index *index, const char *prefix);
+
+/**@}*/
+
+/** @name Conflict Index Entry Functions
+ *
+ * These functions work on conflict index entries specifically (ie, stages 1-3)
+ */
+/**@{*/
+
+/**
+ * Add or update index entries to represent a conflict.  Any staged
+ * entries that exist at the given paths will be removed.
+ *
+ * The entries are the entries from the tree included in the merge.  Any
+ * entry may be null to indicate that that file was not present in the
+ * trees during the merge.  For example, ancestor_entry may be NULL to
+ * indicate that a file was added in both branches and must be resolved.
+ *
+ * @param index an existing index object
+ * @param ancestor_entry the entry data for the ancestor of the conflict
+ * @param our_entry the entry data for our side of the merge conflict
+ * @param their_entry the entry data for their side of the merge conflict
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_index_conflict_add(
+	git_index *index,
+	const git_index_entry *ancestor_entry,
+	const git_index_entry *our_entry,
+	const git_index_entry *their_entry);
+
+/**
+ * Get the index entries that represent a conflict of a single file.
+ *
+ * The entries are not modifiable and should not be freed.  Because the
+ * `git_index_entry` struct is a publicly defined struct, you should
+ * be able to make your own permanent copy of the data if necessary.
+ *
+ * @param ancestor_out Pointer to store the ancestor entry
+ * @param our_out Pointer to store the our entry
+ * @param their_out Pointer to store the their entry
+ * @param index an existing index object
+ * @param path path to search
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_index_conflict_get(
+	const git_index_entry **ancestor_out,
+	const git_index_entry **our_out,
+	const git_index_entry **their_out,
+	git_index *index,
+	const char *path);
+
+/**
+ * Removes the index entries that represent a conflict of a single file.
+ *
+ * @param index an existing index object
+ * @param path path to remove conflicts for
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_index_conflict_remove(git_index *index, const char *path);
+
+/**
+ * Remove all conflicts in the index (entries with a stage greater than 0).
+ *
+ * @param index an existing index object
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_index_conflict_cleanup(git_index *index);
+
+/**
+ * Determine if the index contains entries representing file conflicts.
+ *
+ * @param index An existing index object.
+ * @return 1 if at least one conflict is found, 0 otherwise.
+ */
+GIT_EXTERN(int) git_index_has_conflicts(const git_index *index);
+
+/**
+ * Create an iterator for the conflicts in the index.
+ *
+ * The index must not be modified while iterating; the results are undefined.
+ *
+ * @param iterator_out The newly created conflict iterator
+ * @param index The index to scan
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_index_conflict_iterator_new(
+	git_index_conflict_iterator **iterator_out,
+	git_index *index);
+
+/**
+ * Returns the current conflict (ancestor, ours and theirs entry) and
+ * advance the iterator internally to the next value.
+ *
+ * @param ancestor_out Pointer to store the ancestor side of the conflict
+ * @param our_out Pointer to store our side of the conflict
+ * @param their_out Pointer to store their side of the conflict
+ * @param iterator The conflict iterator.
+ * @return 0 (no error), GIT_ITEROVER (iteration is done) or an error code
+ *         (negative value)
+ */
+GIT_EXTERN(int) git_index_conflict_next(
+	const git_index_entry **ancestor_out,
+	const git_index_entry **our_out,
+	const git_index_entry **their_out,
+	git_index_conflict_iterator *iterator);
+
+/**
+ * Frees a `git_index_conflict_iterator`.
+ *
+ * @param iterator pointer to the iterator
+ */
+GIT_EXTERN(void) git_index_conflict_iterator_free(
+	git_index_conflict_iterator *iterator);
+
+/** @} */
+GIT_END_DECL
+#endif

3rdparty/libgit2/include/git2/indexer.h

@@ -0,0 +1,195 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef _INCLUDE_git_indexer_h__
+#define _INCLUDE_git_indexer_h__
+
+#include "common.h"
+#include "types.h"
+#include "oid.h"
+
+GIT_BEGIN_DECL
+
+/** A git indexer object */
+typedef struct git_indexer git_indexer;
+
+/**
+ * This structure is used to provide callers information about the
+ * progress of indexing a packfile, either directly or part of a
+ * fetch or clone that downloads a packfile.
+ */
+typedef struct git_indexer_progress {
+	/** number of objects in the packfile being indexed */
+	unsigned int total_objects;
+
+	/** received objects that have been hashed */
+	unsigned int indexed_objects;
+
+	/** received_objects: objects which have been downloaded */
+	unsigned int received_objects;
+
+	/**
+	 * locally-available objects that have been injected in order
+	 * to fix a thin pack
+	 */
+	unsigned int local_objects;
+
+	/** number of deltas in the packfile being indexed */
+	unsigned int total_deltas;
+
+	/** received deltas that have been indexed */
+	unsigned int indexed_deltas;
+
+	/** size of the packfile received up to now */
+	size_t received_bytes;
+} git_indexer_progress;
+
+/**
+ * Type for progress callbacks during indexing.  Return a value less
+ * than zero to cancel the indexing or download.
+ *
+ * @param stats Structure containing information about the state of the transfer
+ * @param payload Payload provided by caller
+ */
+typedef int GIT_CALLBACK(git_indexer_progress_cb)(const git_indexer_progress *stats, void *payload);
+
+/**
+ * Options for indexer configuration
+ */
+typedef struct git_indexer_options {
+	unsigned int version;
+
+#ifdef GIT_EXPERIMENTAL_SHA256
+	/** permissions to use creating packfile or 0 for defaults */
+	unsigned int mode;
+
+	/**
+	 * object database from which to read base objects when
+	 * fixing thin packs. This can be NULL if there are no thin
+	 * packs; if a thin pack is encountered, an error will be
+	 * returned if there are bases missing.
+	 */
+	git_odb *odb;
+#endif
+
+	/** progress_cb function to call with progress information */
+	git_indexer_progress_cb progress_cb;
+
+	/** progress_cb_payload payload for the progress callback */
+	void *progress_cb_payload;
+
+	/** Do connectivity checks for the received pack */
+	unsigned char verify;
+} git_indexer_options;
+
+#define GIT_INDEXER_OPTIONS_VERSION 1
+#define GIT_INDEXER_OPTIONS_INIT { GIT_INDEXER_OPTIONS_VERSION }
+
+/**
+ * Initializes a `git_indexer_options` with default values. Equivalent to
+ * creating an instance with GIT_INDEXER_OPTIONS_INIT.
+ *
+ * @param opts the `git_indexer_options` struct to initialize.
+ * @param version Version of struct; pass `GIT_INDEXER_OPTIONS_VERSION`
+ * @return Zero on success; -1 on failure.
+ */
+GIT_EXTERN(int) git_indexer_options_init(
+	git_indexer_options *opts,
+	unsigned int version);
+
+#ifdef GIT_EXPERIMENTAL_SHA256
+/**
+ * Create a new indexer instance
+ *
+ * @param out where to store the indexer instance
+ * @param path to the directory where the packfile should be stored
+ * @param oid_type the oid type to use for objects
+ * @return 0 or an error code.
+ */
+GIT_EXTERN(int) git_indexer_new(
+		git_indexer **out,
+		const char *path,
+		git_oid_t oid_type,
+		git_indexer_options *opts);
+#else
+/**
+ * Create a new indexer instance
+ *
+ * @param out where to store the indexer instance
+ * @param path to the directory where the packfile should be stored
+ * @param mode permissions to use creating packfile or 0 for defaults
+ * @param odb object database from which to read base objects when
+ * fixing thin packs. Pass NULL if no thin pack is expected (an error
+ * will be returned if there are bases missing)
+ * @param opts Optional structure containing additional options. See
+ * `git_indexer_options` above.
+ * @return 0 or an error code.
+ */
+GIT_EXTERN(int) git_indexer_new(
+		git_indexer **out,
+		const char *path,
+		unsigned int mode,
+		git_odb *odb,
+		git_indexer_options *opts);
+#endif
+
+/**
+ * Add data to the indexer
+ *
+ * @param idx the indexer
+ * @param data the data to add
+ * @param size the size of the data in bytes
+ * @param stats stat storage
+ * @return 0 or an error code.
+ */
+GIT_EXTERN(int) git_indexer_append(git_indexer *idx, const void *data, size_t size, git_indexer_progress *stats);
+
+/**
+ * Finalize the pack and index
+ *
+ * Resolve any pending deltas and write out the index file
+ *
+ * @param idx the indexer
+ * @param stats Stat storage.
+ * @return 0 or an error code.
+ */
+GIT_EXTERN(int) git_indexer_commit(git_indexer *idx, git_indexer_progress *stats);
+
+#ifndef GIT_DEPRECATE_HARD
+/**
+ * Get the packfile's hash
+ *
+ * A packfile's name is derived from the sorted hashing of all object
+ * names. This is only correct after the index has been finalized.
+ *
+ * @deprecated use git_indexer_name
+ * @param idx the indexer instance
+ * @return the packfile's hash
+ */
+GIT_EXTERN(const git_oid *) git_indexer_hash(const git_indexer *idx);
+#endif
+
+/**
+ * Get the unique name for the resulting packfile.
+ *
+ * The packfile's name is derived from the packfile's content.
+ * This is only correct after the index has been finalized.
+ *
+ * @param idx the indexer instance
+ * @return a NUL terminated string for the packfile name
+ */
+GIT_EXTERN(const char *) git_indexer_name(const git_indexer *idx);
+
+/**
+ * Free the indexer and its resources
+ *
+ * @param idx the indexer to free
+ */
+GIT_EXTERN(void) git_indexer_free(git_indexer *idx);
+
+GIT_END_DECL
+
+#endif

3rdparty/libgit2/include/git2/mailmap.h

@@ -0,0 +1,115 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_mailmap_h__
+#define INCLUDE_git_mailmap_h__
+
+#include "common.h"
+#include "types.h"
+#include "buffer.h"
+
+/**
+ * @file git2/mailmap.h
+ * @brief Mailmap parsing routines
+ * @defgroup git_mailmap Git mailmap routines
+ * @ingroup Git
+ * @{
+ */
+GIT_BEGIN_DECL
+
+/**
+ * Allocate a new mailmap object.
+ *
+ * This object is empty, so you'll have to add a mailmap file before you can do
+ * anything with it. The mailmap must be freed with 'git_mailmap_free'.
+ *
+ * @param out pointer to store the new mailmap
+ * @return 0 on success, or an error code
+ */
+GIT_EXTERN(int) git_mailmap_new(git_mailmap **out);
+
+/**
+ * Free the mailmap and its associated memory.
+ *
+ * @param mm the mailmap to free
+ */
+GIT_EXTERN(void) git_mailmap_free(git_mailmap *mm);
+
+/**
+ * Add a single entry to the given mailmap object. If the entry already exists,
+ * it will be replaced with the new entry.
+ *
+ * @param mm mailmap to add the entry to
+ * @param real_name the real name to use, or NULL
+ * @param real_email the real email to use, or NULL
+ * @param replace_name the name to replace, or NULL
+ * @param replace_email the email to replace
+ * @return 0 on success, or an error code
+ */
+GIT_EXTERN(int) git_mailmap_add_entry(
+	git_mailmap *mm, const char *real_name, const char *real_email,
+	const char *replace_name, const char *replace_email);
+
+/**
+ * Create a new mailmap instance containing a single mailmap file
+ *
+ * @param out pointer to store the new mailmap
+ * @param buf buffer to parse the mailmap from
+ * @param len the length of the input buffer
+ * @return 0 on success, or an error code
+ */
+GIT_EXTERN(int) git_mailmap_from_buffer(
+	git_mailmap **out, const char *buf, size_t len);
+
+/**
+ * Create a new mailmap instance from a repository, loading mailmap files based
+ * on the repository's configuration.
+ *
+ * Mailmaps are loaded in the following order:
+ *  1. '.mailmap' in the root of the repository's working directory, if present.
+ *  2. The blob object identified by the 'mailmap.blob' config entry, if set.
+ * 	   [NOTE: 'mailmap.blob' defaults to 'HEAD:.mailmap' in bare repositories]
+ *  3. The path in the 'mailmap.file' config entry, if set.
+ *
+ * @param out pointer to store the new mailmap
+ * @param repo repository to load mailmap information from
+ * @return 0 on success, or an error code
+ */
+GIT_EXTERN(int) git_mailmap_from_repository(
+	git_mailmap **out, git_repository *repo);
+
+/**
+ * Resolve a name and email to the corresponding real name and email.
+ *
+ * The lifetime of the strings are tied to `mm`, `name`, and `email` parameters.
+ *
+ * @param real_name pointer to store the real name
+ * @param real_email pointer to store the real email
+ * @param mm the mailmap to perform a lookup with (may be NULL)
+ * @param name the name to look up
+ * @param email the email to look up
+ * @return 0 on success, or an error code
+ */
+GIT_EXTERN(int) git_mailmap_resolve(
+	const char **real_name, const char **real_email,
+	const git_mailmap *mm, const char *name, const char *email);
+
+/**
+ * Resolve a signature to use real names and emails with a mailmap.
+ *
+ * Call `git_signature_free()` to free the data.
+ *
+ * @param out new signature
+ * @param mm mailmap to resolve with
+ * @param sig signature to resolve
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_mailmap_resolve_signature(
+	git_signature **out, const git_mailmap *mm, const git_signature *sig);
+
+/** @} */
+GIT_END_DECL
+#endif

3rdparty/libgit2/include/git2/merge.h

@@ -0,0 +1,626 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_merge_h__
+#define INCLUDE_git_merge_h__
+
+#include "common.h"
+#include "types.h"
+#include "oid.h"
+#include "oidarray.h"
+#include "checkout.h"
+#include "index.h"
+#include "annotated_commit.h"
+
+/**
+ * @file git2/merge.h
+ * @brief Git merge routines
+ * @defgroup git_merge Git merge routines
+ * @ingroup Git
+ * @{
+ */
+GIT_BEGIN_DECL
+
+/**
+ * The file inputs to `git_merge_file`.  Callers should populate the
+ * `git_merge_file_input` structure with descriptions of the files in
+ * each side of the conflict for use in producing the merge file.
+ */
+typedef struct {
+	unsigned int version;
+
+	/** Pointer to the contents of the file. */
+	const char *ptr;
+
+	/** Size of the contents pointed to in `ptr`. */
+	size_t size;
+
+	/** File name of the conflicted file, or `NULL` to not merge the path. */
+	const char *path;
+
+	/** File mode of the conflicted file, or `0` to not merge the mode. */
+	unsigned int mode;
+} git_merge_file_input;
+
+#define GIT_MERGE_FILE_INPUT_VERSION 1
+#define GIT_MERGE_FILE_INPUT_INIT {GIT_MERGE_FILE_INPUT_VERSION}
+
+/**
+ * Initializes a `git_merge_file_input` with default values. Equivalent to
+ * creating an instance with GIT_MERGE_FILE_INPUT_INIT.
+ *
+ * @param opts the `git_merge_file_input` instance to initialize.
+ * @param version the version of the struct; you should pass
+ *        `GIT_MERGE_FILE_INPUT_VERSION` here.
+ * @return Zero on success; -1 on failure.
+ */
+GIT_EXTERN(int) git_merge_file_input_init(
+	git_merge_file_input *opts,
+	unsigned int version);
+
+/**
+ * Flags for `git_merge` options.  A combination of these flags can be
+ * passed in via the `flags` value in the `git_merge_options`.
+ */
+typedef enum {
+	/**
+	 * Detect renames that occur between the common ancestor and the "ours"
+	 * side or the common ancestor and the "theirs" side.  This will enable
+	 * the ability to merge between a modified and renamed file.
+	 */
+	GIT_MERGE_FIND_RENAMES = (1 << 0),
+
+	/**
+	 * If a conflict occurs, exit immediately instead of attempting to
+	 * continue resolving conflicts.  The merge operation will fail with
+	 * GIT_EMERGECONFLICT and no index will be returned.
+	 */
+	GIT_MERGE_FAIL_ON_CONFLICT = (1 << 1),
+
+	/**
+	 * Do not write the REUC extension on the generated index
+	 */
+	GIT_MERGE_SKIP_REUC = (1 << 2),
+
+	/**
+	 * If the commits being merged have multiple merge bases, do not build
+	 * a recursive merge base (by merging the multiple merge bases),
+	 * instead simply use the first base.  This flag provides a similar
+	 * merge base to `git-merge-resolve`.
+	 */
+	GIT_MERGE_NO_RECURSIVE = (1 << 3),
+
+	/**
+	 * Treat this merge as if it is to produce the virtual base
+	 * of a recursive merge.  This will ensure that there are
+	 * no conflicts, any conflicting regions will keep conflict
+	 * markers in the merge result.
+	 */
+	GIT_MERGE_VIRTUAL_BASE = (1 << 4)
+} git_merge_flag_t;
+
+/**
+ * Merge file favor options for `git_merge_options` instruct the file-level
+ * merging functionality how to deal with conflicting regions of the files.
+ */
+typedef enum {
+	/**
+	 * When a region of a file is changed in both branches, a conflict
+	 * will be recorded in the index so that `git_checkout` can produce
+	 * a merge file with conflict markers in the working directory.
+	 * This is the default.
+	 */
+	GIT_MERGE_FILE_FAVOR_NORMAL = 0,
+
+	/**
+	 * When a region of a file is changed in both branches, the file
+	 * created in the index will contain the "ours" side of any conflicting
+	 * region.  The index will not record a conflict.
+	 */
+	GIT_MERGE_FILE_FAVOR_OURS = 1,
+
+	/**
+	 * When a region of a file is changed in both branches, the file
+	 * created in the index will contain the "theirs" side of any conflicting
+	 * region.  The index will not record a conflict.
+	 */
+	GIT_MERGE_FILE_FAVOR_THEIRS = 2,
+
+	/**
+	 * When a region of a file is changed in both branches, the file
+	 * created in the index will contain each unique line from each side,
+	 * which has the result of combining both files.  The index will not
+	 * record a conflict.
+	 */
+	GIT_MERGE_FILE_FAVOR_UNION = 3
+} git_merge_file_favor_t;
+
+/**
+ * File merging flags
+ */
+typedef enum {
+	/** Defaults */
+	GIT_MERGE_FILE_DEFAULT = 0,
+
+	/** Create standard conflicted merge files */
+	GIT_MERGE_FILE_STYLE_MERGE = (1 << 0),
+
+	/** Create diff3-style files */
+	GIT_MERGE_FILE_STYLE_DIFF3 = (1 << 1),
+
+	/** Condense non-alphanumeric regions for simplified diff file */
+	GIT_MERGE_FILE_SIMPLIFY_ALNUM = (1 << 2),
+
+	/** Ignore all whitespace */
+	GIT_MERGE_FILE_IGNORE_WHITESPACE = (1 << 3),
+
+	/** Ignore changes in amount of whitespace */
+	GIT_MERGE_FILE_IGNORE_WHITESPACE_CHANGE = (1 << 4),
+
+	/** Ignore whitespace at end of line */
+	GIT_MERGE_FILE_IGNORE_WHITESPACE_EOL = (1 << 5),
+
+	/** Use the "patience diff" algorithm */
+	GIT_MERGE_FILE_DIFF_PATIENCE = (1 << 6),
+
+	/** Take extra time to find minimal diff */
+	GIT_MERGE_FILE_DIFF_MINIMAL = (1 << 7),
+
+	/** Create zdiff3 ("zealous diff3")-style files */
+	GIT_MERGE_FILE_STYLE_ZDIFF3 = (1 << 8),
+
+	/**
+	 * Do not produce file conflicts when common regions have
+	 * changed; keep the conflict markers in the file and accept
+	 * that as the merge result.
+	 */
+	GIT_MERGE_FILE_ACCEPT_CONFLICTS = (1 << 9)
+} git_merge_file_flag_t;
+
+#define GIT_MERGE_CONFLICT_MARKER_SIZE	7
+
+/**
+ * Options for merging a file
+ */
+typedef struct {
+	unsigned int version;
+
+	/**
+	 * Label for the ancestor file side of the conflict which will be prepended
+	 * to labels in diff3-format merge files.
+	 */
+	const char *ancestor_label;
+
+	/**
+	 * Label for our file side of the conflict which will be prepended
+	 * to labels in merge files.
+	 */
+	const char *our_label;
+
+	/**
+	 * Label for their file side of the conflict which will be prepended
+	 * to labels in merge files.
+	 */
+	const char *their_label;
+
+	/** The file to favor in region conflicts. */
+	git_merge_file_favor_t favor;
+
+	/** see `git_merge_file_flag_t` above */
+	uint32_t flags;
+
+	/** The size of conflict markers (eg, "<<<<<<<").  Default is
+	 * GIT_MERGE_CONFLICT_MARKER_SIZE. */
+	unsigned short marker_size;
+} git_merge_file_options;
+
+#define GIT_MERGE_FILE_OPTIONS_VERSION 1
+#define GIT_MERGE_FILE_OPTIONS_INIT {GIT_MERGE_FILE_OPTIONS_VERSION}
+
+/**
+ * Initialize git_merge_file_options structure
+ *
+ * Initializes a `git_merge_file_options` with default values. Equivalent to
+ * creating an instance with `GIT_MERGE_FILE_OPTIONS_INIT`.
+ *
+ * @param opts The `git_merge_file_options` struct to initialize.
+ * @param version The struct version; pass `GIT_MERGE_FILE_OPTIONS_VERSION`.
+ * @return Zero on success; -1 on failure.
+ */
+GIT_EXTERN(int) git_merge_file_options_init(git_merge_file_options *opts, unsigned int version);
+
+/**
+ * Information about file-level merging
+ */
+typedef struct {
+	/**
+	 * True if the output was automerged, false if the output contains
+	 * conflict markers.
+	 */
+	unsigned int automergeable;
+
+	/**
+	 * The path that the resultant merge file should use, or NULL if a
+	 * filename conflict would occur.
+	 */
+	const char *path;
+
+	/** The mode that the resultant merge file should use.  */
+	unsigned int mode;
+
+	/** The contents of the merge. */
+	const char *ptr;
+
+	/** The length of the merge contents. */
+	size_t len;
+} git_merge_file_result;
+
+/**
+ * Merging options
+ */
+typedef struct {
+	unsigned int version;
+
+	/** See `git_merge_flag_t` above */
+	uint32_t flags;
+
+	/**
+	 * Similarity to consider a file renamed (default 50).  If
+	 * `GIT_MERGE_FIND_RENAMES` is enabled, added files will be compared
+	 * with deleted files to determine their similarity.  Files that are
+	 * more similar than the rename threshold (percentage-wise) will be
+	 * treated as a rename.
+	 */
+	unsigned int rename_threshold;
+
+	/**
+	 * Maximum similarity sources to examine for renames (default 200).
+	 * If the number of rename candidates (add / delete pairs) is greater
+	 * than this value, inexact rename detection is aborted.
+	 *
+	 * This setting overrides the `merge.renameLimit` configuration value.
+	 */
+	unsigned int target_limit;
+
+	/** Pluggable similarity metric; pass NULL to use internal metric */
+	git_diff_similarity_metric *metric;
+
+	/**
+	 * Maximum number of times to merge common ancestors to build a
+	 * virtual merge base when faced with criss-cross merges.  When this
+	 * limit is reached, the next ancestor will simply be used instead of
+	 * attempting to merge it.  The default is unlimited.
+	 */
+	unsigned int recursion_limit;
+
+	/**
+	 * Default merge driver to be used when both sides of a merge have
+	 * changed.  The default is the `text` driver.
+	 */
+	const char *default_driver;
+
+	/**
+	 * Flags for handling conflicting content, to be used with the standard
+	 * (`text`) merge driver.
+	 */
+	git_merge_file_favor_t file_favor;
+
+	/** see `git_merge_file_flag_t` above */
+	uint32_t file_flags;
+} git_merge_options;
+
+#define GIT_MERGE_OPTIONS_VERSION 1
+#define GIT_MERGE_OPTIONS_INIT { \
+	GIT_MERGE_OPTIONS_VERSION, GIT_MERGE_FIND_RENAMES }
+
+/**
+ * Initialize git_merge_options structure
+ *
+ * Initializes a `git_merge_options` with default values. Equivalent to
+ * creating an instance with `GIT_MERGE_OPTIONS_INIT`.
+ *
+ * @param opts The `git_merge_options` struct to initialize.
+ * @param version The struct version; pass `GIT_MERGE_OPTIONS_VERSION`.
+ * @return Zero on success; -1 on failure.
+ */
+GIT_EXTERN(int) git_merge_options_init(git_merge_options *opts, unsigned int version);
+
+/**
+ * The results of `git_merge_analysis` indicate the merge opportunities.
+ */
+typedef enum {
+	/** No merge is possible.  (Unused.) */
+	GIT_MERGE_ANALYSIS_NONE = 0,
+
+	/**
+	 * A "normal" merge; both HEAD and the given merge input have diverged
+	 * from their common ancestor.  The divergent commits must be merged.
+	 */
+	GIT_MERGE_ANALYSIS_NORMAL = (1 << 0),
+
+	/**
+	 * All given merge inputs are reachable from HEAD, meaning the
+	 * repository is up-to-date and no merge needs to be performed.
+	 */
+	GIT_MERGE_ANALYSIS_UP_TO_DATE = (1 << 1),
+
+	/**
+	 * The given merge input is a fast-forward from HEAD and no merge
+	 * needs to be performed.  Instead, the client can check out the
+	 * given merge input.
+	 */
+	GIT_MERGE_ANALYSIS_FASTFORWARD = (1 << 2),
+
+	/**
+	 * The HEAD of the current repository is "unborn" and does not point to
+	 * a valid commit.  No merge can be performed, but the caller may wish
+	 * to simply set HEAD to the target commit(s).
+	 */
+	GIT_MERGE_ANALYSIS_UNBORN = (1 << 3)
+} git_merge_analysis_t;
+
+/**
+ * The user's stated preference for merges.
+ */
+typedef enum {
+	/**
+	 * No configuration was found that suggests a preferred behavior for
+	 * merge.
+	 */
+	GIT_MERGE_PREFERENCE_NONE = 0,
+
+	/**
+	 * There is a `merge.ff=false` configuration setting, suggesting that
+	 * the user does not want to allow a fast-forward merge.
+	 */
+	GIT_MERGE_PREFERENCE_NO_FASTFORWARD = (1 << 0),
+
+	/**
+	 * There is a `merge.ff=only` configuration setting, suggesting that
+	 * the user only wants fast-forward merges.
+	 */
+	GIT_MERGE_PREFERENCE_FASTFORWARD_ONLY = (1 << 1)
+} git_merge_preference_t;
+
+/**
+ * Analyzes the given branch(es) and determines the opportunities for
+ * merging them into the HEAD of the repository.
+ *
+ * @param analysis_out analysis enumeration that the result is written into
+ * @param preference_out One of the `git_merge_preference_t` flag.
+ * @param repo the repository to merge
+ * @param their_heads the heads to merge into
+ * @param their_heads_len the number of heads to merge
+ * @return 0 on success or error code
+ */
+GIT_EXTERN(int) git_merge_analysis(
+	git_merge_analysis_t *analysis_out,
+	git_merge_preference_t *preference_out,
+	git_repository *repo,
+	const git_annotated_commit **their_heads,
+	size_t their_heads_len);
+
+/**
+ * Analyzes the given branch(es) and determines the opportunities for
+ * merging them into a reference.
+ *
+ * @param analysis_out analysis enumeration that the result is written into
+ * @param preference_out One of the `git_merge_preference_t` flag.
+ * @param repo the repository to merge
+ * @param our_ref the reference to perform the analysis from
+ * @param their_heads the heads to merge into
+ * @param their_heads_len the number of heads to merge
+ * @return 0 on success or error code
+ */
+GIT_EXTERN(int) git_merge_analysis_for_ref(
+	git_merge_analysis_t *analysis_out,
+	git_merge_preference_t *preference_out,
+	git_repository *repo,
+	git_reference *our_ref,
+	const git_annotated_commit **their_heads,
+	size_t their_heads_len);
+
+/**
+ * Find a merge base between two commits
+ *
+ * @param out the OID of a merge base between 'one' and 'two'
+ * @param repo the repository where the commits exist
+ * @param one one of the commits
+ * @param two the other commit
+ * @return 0 on success, GIT_ENOTFOUND if not found or error code
+ */
+GIT_EXTERN(int) git_merge_base(
+	git_oid *out,
+	git_repository *repo,
+	const git_oid *one,
+	const git_oid *two);
+
+/**
+ * Find merge bases between two commits
+ *
+ * @param out array in which to store the resulting ids
+ * @param repo the repository where the commits exist
+ * @param one one of the commits
+ * @param two the other commit
+ * @return 0 on success, GIT_ENOTFOUND if not found or error code
+ */
+GIT_EXTERN(int) git_merge_bases(
+	git_oidarray *out,
+	git_repository *repo,
+	const git_oid *one,
+	const git_oid *two);
+
+/**
+ * Find a merge base given a list of commits
+ *
+ * @param out the OID of a merge base considering all the commits
+ * @param repo the repository where the commits exist
+ * @param length The number of commits in the provided `input_array`
+ * @param input_array oids of the commits
+ * @return Zero on success; GIT_ENOTFOUND or -1 on failure.
+ */
+GIT_EXTERN(int) git_merge_base_many(
+	git_oid *out,
+	git_repository *repo,
+	size_t length,
+	const git_oid input_array[]);
+
+/**
+ * Find all merge bases given a list of commits
+ *
+ * @param out array in which to store the resulting ids
+ * @param repo the repository where the commits exist
+ * @param length The number of commits in the provided `input_array`
+ * @param input_array oids of the commits
+ * @return Zero on success; GIT_ENOTFOUND or -1 on failure.
+ */
+GIT_EXTERN(int) git_merge_bases_many(
+	git_oidarray *out,
+	git_repository *repo,
+	size_t length,
+	const git_oid input_array[]);
+
+/**
+ * Find a merge base in preparation for an octopus merge
+ *
+ * @param out the OID of a merge base considering all the commits
+ * @param repo the repository where the commits exist
+ * @param length The number of commits in the provided `input_array`
+ * @param input_array oids of the commits
+ * @return Zero on success; GIT_ENOTFOUND or -1 on failure.
+ */
+GIT_EXTERN(int) git_merge_base_octopus(
+	git_oid *out,
+	git_repository *repo,
+	size_t length,
+	const git_oid input_array[]);
+
+/**
+ * Merge two files as they exist in the in-memory data structures, using
+ * the given common ancestor as the baseline, producing a
+ * `git_merge_file_result` that reflects the merge result.  The
+ * `git_merge_file_result` must be freed with `git_merge_file_result_free`.
+ *
+ * Note that this function does not reference a repository and any
+ * configuration must be passed as `git_merge_file_options`.
+ *
+ * @param out The git_merge_file_result to be filled in
+ * @param ancestor The contents of the ancestor file
+ * @param ours The contents of the file in "our" side
+ * @param theirs The contents of the file in "their" side
+ * @param opts The merge file options or `NULL` for defaults
+ * @return 0 on success or error code
+ */
+GIT_EXTERN(int) git_merge_file(
+	git_merge_file_result *out,
+	const git_merge_file_input *ancestor,
+	const git_merge_file_input *ours,
+	const git_merge_file_input *theirs,
+	const git_merge_file_options *opts);
+
+/**
+ * Merge two files as they exist in the index, using the given common
+ * ancestor as the baseline, producing a `git_merge_file_result` that
+ * reflects the merge result.  The `git_merge_file_result` must be freed with
+ * `git_merge_file_result_free`.
+ *
+ * @param out The git_merge_file_result to be filled in
+ * @param repo The repository
+ * @param ancestor The index entry for the ancestor file (stage level 1)
+ * @param ours The index entry for our file (stage level 2)
+ * @param theirs The index entry for their file (stage level 3)
+ * @param opts The merge file options or NULL
+ * @return 0 on success or error code
+ */
+GIT_EXTERN(int) git_merge_file_from_index(
+	git_merge_file_result *out,
+	git_repository *repo,
+	const git_index_entry *ancestor,
+	const git_index_entry *ours,
+	const git_index_entry *theirs,
+	const git_merge_file_options *opts);
+
+/**
+ * Frees a `git_merge_file_result`.
+ *
+ * @param result The result to free or `NULL`
+ */
+GIT_EXTERN(void) git_merge_file_result_free(git_merge_file_result *result);
+
+/**
+ * Merge two trees, producing a `git_index` that reflects the result of
+ * the merge.  The index may be written as-is to the working directory
+ * or checked out.  If the index is to be converted to a tree, the caller
+ * should resolve any conflicts that arose as part of the merge.
+ *
+ * The returned index must be freed explicitly with `git_index_free`.
+ *
+ * @param out pointer to store the index result in
+ * @param repo repository that contains the given trees
+ * @param ancestor_tree the common ancestor between the trees (or null if none)
+ * @param our_tree the tree that reflects the destination tree
+ * @param their_tree the tree to merge in to `our_tree`
+ * @param opts the merge tree options (or null for defaults)
+ * @return 0 on success or error code
+ */
+GIT_EXTERN(int) git_merge_trees(
+	git_index **out,
+	git_repository *repo,
+	const git_tree *ancestor_tree,
+	const git_tree *our_tree,
+	const git_tree *their_tree,
+	const git_merge_options *opts);
+
+/**
+ * Merge two commits, producing a `git_index` that reflects the result of
+ * the merge.  The index may be written as-is to the working directory
+ * or checked out.  If the index is to be converted to a tree, the caller
+ * should resolve any conflicts that arose as part of the merge.
+ *
+ * The returned index must be freed explicitly with `git_index_free`.
+ *
+ * @param out pointer to store the index result in
+ * @param repo repository that contains the given trees
+ * @param our_commit the commit that reflects the destination tree
+ * @param their_commit the commit to merge in to `our_commit`
+ * @param opts the merge tree options (or null for defaults)
+ * @return 0 on success or error code
+ */
+GIT_EXTERN(int) git_merge_commits(
+	git_index **out,
+	git_repository *repo,
+	const git_commit *our_commit,
+	const git_commit *their_commit,
+	const git_merge_options *opts);
+
+/**
+ * Merges the given commit(s) into HEAD, writing the results into the working
+ * directory.  Any changes are staged for commit and any conflicts are written
+ * to the index.  Callers should inspect the repository's index after this
+ * completes, resolve any conflicts and prepare a commit.
+ *
+ * For compatibility with git, the repository is put into a merging
+ * state. Once the commit is done (or if the user wishes to abort),
+ * you should clear this state by calling
+ * `git_repository_state_cleanup()`.
+ *
+ * @param repo the repository to merge
+ * @param their_heads the heads to merge into
+ * @param their_heads_len the number of heads to merge
+ * @param merge_opts merge options
+ * @param checkout_opts checkout options
+ * @return 0 on success or error code
+ */
+GIT_EXTERN(int) git_merge(
+	git_repository *repo,
+	const git_annotated_commit **their_heads,
+	size_t their_heads_len,
+	const git_merge_options *merge_opts,
+	const git_checkout_options *checkout_opts);
+
+/** @} */
+GIT_END_DECL
+#endif

3rdparty/libgit2/include/git2/message.h

@@ -0,0 +1,86 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_message_h__
+#define INCLUDE_git_message_h__
+
+#include "common.h"
+#include "buffer.h"
+
+/**
+ * @file git2/message.h
+ * @brief Git message management routines
+ * @ingroup Git
+ * @{
+ */
+GIT_BEGIN_DECL
+
+/**
+ * Clean up excess whitespace and make sure there is a trailing newline in the message.
+ *
+ * Optionally, it can remove lines which start with the comment character.
+ *
+ * @param out The user-allocated git_buf which will be filled with the
+ *     cleaned up message.
+ *
+ * @param message The message to be prettified.
+ *
+ * @param strip_comments Non-zero to remove comment lines, 0 to leave them in.
+ *
+ * @param comment_char Comment character. Lines starting with this character
+ * are considered to be comments and removed if `strip_comments` is non-zero.
+ *
+ * @return 0 or an error code.
+ */
+GIT_EXTERN(int) git_message_prettify(git_buf *out, const char *message, int strip_comments, char comment_char);
+
+/**
+ * Represents a single git message trailer.
+ */
+typedef struct {
+  const char *key;
+  const char *value;
+} git_message_trailer;
+
+/**
+ * Represents an array of git message trailers.
+ *
+ * Struct members under the private comment are private, subject to change
+ * and should not be used by callers.
+ */
+typedef struct {
+  git_message_trailer *trailers;
+  size_t count;
+
+  /* private */
+  char *_trailer_block;
+} git_message_trailer_array;
+
+/**
+ * Parse trailers out of a message, filling the array pointed to by +arr+.
+ *
+ * Trailers are key/value pairs in the last paragraph of a message, not
+ * including any patches or conflicts that may be present.
+ *
+ * @param arr A pre-allocated git_message_trailer_array struct to be filled in
+ *            with any trailers found during parsing.
+ * @param message The message to be parsed
+ * @return 0 on success, or non-zero on error.
+ */
+GIT_EXTERN(int) git_message_trailers(git_message_trailer_array *arr, const char *message);
+
+/**
+ * Clean's up any allocated memory in the git_message_trailer_array filled by
+ * a call to git_message_trailers.
+ *
+ * @param arr The trailer to free.
+ */
+GIT_EXTERN(void) git_message_trailer_array_free(git_message_trailer_array *arr);
+
+/** @} */
+GIT_END_DECL
+
+#endif /* INCLUDE_git_message_h__ */

3rdparty/libgit2/include/git2/net.h

@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_net_h__
+#define INCLUDE_git_net_h__
+
+#include "common.h"
+#include "oid.h"
+#include "types.h"
+
+/**
+ * @file git2/net.h
+ * @brief Git networking declarations
+ * @ingroup Git
+ * @{
+ */
+GIT_BEGIN_DECL
+
+#define GIT_DEFAULT_PORT "9418"
+
+/**
+ * Direction of the connection.
+ *
+ * We need this because we need to know whether we should call
+ * git-upload-pack or git-receive-pack on the remote end when get_refs
+ * gets called.
+ */
+typedef enum {
+	GIT_DIRECTION_FETCH = 0,
+	GIT_DIRECTION_PUSH  = 1
+} git_direction;
+
+/**
+ * Description of a reference advertised by a remote server, given out
+ * on `ls` calls.
+ */
+struct git_remote_head {
+	int local; /* available locally */
+	git_oid oid;
+	git_oid loid;
+	char *name;
+	/**
+	 * If the server send a symref mapping for this ref, this will
+	 * point to the target.
+	 */
+	char *symref_target;
+};
+
+/** @} */
+GIT_END_DECL
+#endif

3rdparty/libgit2/include/git2/notes.h

@@ -0,0 +1,306 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_note_h__
+#define INCLUDE_git_note_h__
+
+#include "oid.h"
+
+/**
+ * @file git2/notes.h
+ * @brief Git notes management routines
+ * @defgroup git_note Git notes management routines
+ * @ingroup Git
+ * @{
+ */
+GIT_BEGIN_DECL
+
+/**
+ * Callback for git_note_foreach.
+ *
+ * Receives:
+ * - blob_id: Oid of the blob containing the message
+ * - annotated_object_id: Oid of the git object being annotated
+ * - payload: Payload data passed to `git_note_foreach`
+ */
+typedef int GIT_CALLBACK(git_note_foreach_cb)(
+	const git_oid *blob_id, const git_oid *annotated_object_id, void *payload);
+
+/**
+ * note iterator
+ */
+typedef struct git_iterator git_note_iterator;
+
+/**
+ * Creates a new iterator for notes
+ *
+ * The iterator must be freed manually by the user.
+ *
+ * @param out pointer to the iterator
+ * @param repo repository where to look up the note
+ * @param notes_ref canonical name of the reference to use (optional); defaults to
+ *                  "refs/notes/commits"
+ *
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_note_iterator_new(
+	git_note_iterator **out,
+	git_repository *repo,
+	const char *notes_ref);
+
+/**
+ * Creates a new iterator for notes from a commit
+ *
+ * The iterator must be freed manually by the user.
+ *
+ * @param out pointer to the iterator
+ * @param notes_commit a pointer to the notes commit object
+ *
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_note_commit_iterator_new(
+	git_note_iterator **out,
+	git_commit *notes_commit);
+
+/**
+ * Frees an git_note_iterator
+ *
+ * @param it pointer to the iterator
+ */
+GIT_EXTERN(void) git_note_iterator_free(git_note_iterator *it);
+
+/**
+ * Return the current item (note_id and annotated_id) and advance the iterator
+ * internally to the next value
+ *
+ * @param note_id id of blob containing the message
+ * @param annotated_id id of the git object being annotated
+ * @param it pointer to the iterator
+ *
+ * @return 0 (no error), GIT_ITEROVER (iteration is done) or an error code
+ *         (negative value)
+ */
+GIT_EXTERN(int) git_note_next(
+	git_oid *note_id,
+	git_oid *annotated_id,
+	git_note_iterator *it);
+
+
+/**
+ * Read the note for an object
+ *
+ * The note must be freed manually by the user.
+ *
+ * @param out pointer to the read note; NULL in case of error
+ * @param repo repository where to look up the note
+ * @param notes_ref canonical name of the reference to use (optional); defaults to
+ *                  "refs/notes/commits"
+ * @param oid OID of the git object to read the note from
+ *
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_note_read(
+	git_note **out,
+	git_repository *repo,
+	const char *notes_ref,
+	const git_oid *oid);
+
+
+/**
+ * Read the note for an object from a note commit
+ *
+ * The note must be freed manually by the user.
+ *
+ * @param out pointer to the read note; NULL in case of error
+ * @param repo repository where to look up the note
+ * @param notes_commit a pointer to the notes commit object
+ * @param oid OID of the git object to read the note from
+ *
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_note_commit_read(
+	git_note **out,
+	git_repository *repo,
+	git_commit *notes_commit,
+	const git_oid *oid);
+
+/**
+ * Get the note author
+ *
+ * @param note the note
+ * @return the author
+ */
+GIT_EXTERN(const git_signature *) git_note_author(const git_note *note);
+
+/**
+ * Get the note committer
+ *
+ * @param note the note
+ * @return the committer
+ */
+GIT_EXTERN(const git_signature *) git_note_committer(const git_note *note);
+
+
+/**
+ * Get the note message
+ *
+ * @param note the note
+ * @return the note message
+ */
+GIT_EXTERN(const char *) git_note_message(const git_note *note);
+
+
+/**
+ * Get the note object's id
+ *
+ * @param note the note
+ * @return the note object's id
+ */
+GIT_EXTERN(const git_oid *) git_note_id(const git_note *note);
+
+/**
+ * Add a note for an object
+ *
+ * @param out pointer to store the OID (optional); NULL in case of error
+ * @param repo repository where to store the note
+ * @param notes_ref canonical name of the reference to use (optional);
+ *					defaults to "refs/notes/commits"
+ * @param author signature of the notes commit author
+ * @param committer signature of the notes commit committer
+ * @param oid OID of the git object to decorate
+ * @param note Content of the note to add for object oid
+ * @param force Overwrite existing note
+ *
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_note_create(
+	git_oid *out,
+	git_repository *repo,
+	const char *notes_ref,
+	const git_signature *author,
+	const git_signature *committer,
+	const git_oid *oid,
+	const char *note,
+	int force);
+
+/**
+ * Add a note for an object from a commit
+ *
+ * This function will create a notes commit for a given object,
+ * the commit is a dangling commit, no reference is created.
+ *
+ * @param notes_commit_out pointer to store the commit (optional);
+ *					NULL in case of error
+ * @param notes_blob_out a point to the id of a note blob (optional)
+ * @param repo repository where the note will live
+ * @param parent Pointer to parent note
+ *					or NULL if this shall start a new notes tree
+ * @param author signature of the notes commit author
+ * @param committer signature of the notes commit committer
+ * @param oid OID of the git object to decorate
+ * @param note Content of the note to add for object oid
+ * @param allow_note_overwrite Overwrite existing note
+ *
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_note_commit_create(
+	git_oid *notes_commit_out,
+	git_oid *notes_blob_out,
+	git_repository *repo,
+	git_commit *parent,
+	const git_signature *author,
+	const git_signature *committer,
+	const git_oid *oid,
+	const char *note,
+	int allow_note_overwrite);
+
+/**
+ * Remove the note for an object
+ *
+ * @param repo repository where the note lives
+ * @param notes_ref canonical name of the reference to use (optional);
+ *					defaults to "refs/notes/commits"
+ * @param author signature of the notes commit author
+ * @param committer signature of the notes commit committer
+ * @param oid OID of the git object to remove the note from
+ *
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_note_remove(
+	git_repository *repo,
+	const char *notes_ref,
+	const git_signature *author,
+	const git_signature *committer,
+	const git_oid *oid);
+
+/**
+ * Remove the note for an object
+ *
+ * @param notes_commit_out pointer to store the new notes commit (optional);
+ *					NULL in case of error.
+ *					When removing a note a new tree containing all notes
+ *					sans the note to be removed is created and a new commit
+ *					pointing to that tree is also created.
+ *					In the case where the resulting tree is an empty tree
+ *					a new commit pointing to this empty tree will be returned.
+ * @param repo repository where the note lives
+ * @param notes_commit a pointer to the notes commit object
+ * @param author signature of the notes commit author
+ * @param committer signature of the notes commit committer
+ * @param oid OID of the git object to remove the note from
+ *
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_note_commit_remove(
+		git_oid *notes_commit_out,
+		git_repository *repo,
+		git_commit *notes_commit,
+		const git_signature *author,
+		const git_signature *committer,
+		const git_oid *oid);
+
+/**
+ * Free a git_note object
+ *
+ * @param note git_note object
+ */
+GIT_EXTERN(void) git_note_free(git_note *note);
+
+/**
+ * Get the default notes reference for a repository
+ *
+ * @param out buffer in which to store the name of the default notes reference
+ * @param repo The Git repository
+ *
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_note_default_ref(git_buf *out, git_repository *repo);
+
+/**
+ * Loop over all the notes within a specified namespace
+ * and issue a callback for each one.
+ *
+ * @param repo Repository where to find the notes.
+ *
+ * @param notes_ref Reference to read from (optional); defaults to
+ *        "refs/notes/commits".
+ *
+ * @param note_cb Callback to invoke per found annotation.  Return non-zero
+ *        to stop looping.
+ *
+ * @param payload Extra parameter to callback function.
+ *
+ * @return 0 on success, non-zero callback return value, or error code
+ */
+GIT_EXTERN(int) git_note_foreach(
+	git_repository *repo,
+	const char *notes_ref,
+	git_note_foreach_cb note_cb,
+	void *payload);
+
+/** @} */
+GIT_END_DECL
+#endif

3rdparty/libgit2/include/git2/object.h

@@ -0,0 +1,279 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_object_h__
+#define INCLUDE_git_object_h__
+
+#include "common.h"
+#include "types.h"
+#include "oid.h"
+#include "buffer.h"
+
+/**
+ * @file git2/object.h
+ * @brief Git revision object management routines
+ * @defgroup git_object Git revision object management routines
+ * @ingroup Git
+ * @{
+ */
+GIT_BEGIN_DECL
+
+#define GIT_OBJECT_SIZE_MAX UINT64_MAX
+
+/**
+ * Lookup a reference to one of the objects in a repository.
+ *
+ * The generated reference is owned by the repository and
+ * should be closed with the `git_object_free` method
+ * instead of free'd manually.
+ *
+ * The 'type' parameter must match the type of the object
+ * in the odb; the method will fail otherwise.
+ * The special value 'GIT_OBJECT_ANY' may be passed to let
+ * the method guess the object's type.
+ *
+ * @param object pointer to the looked-up object
+ * @param repo the repository to look up the object
+ * @param id the unique identifier for the object
+ * @param type the type of the object
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_object_lookup(
+		git_object **object,
+		git_repository *repo,
+		const git_oid *id,
+		git_object_t type);
+
+/**
+ * Lookup a reference to one of the objects in a repository,
+ * given a prefix of its identifier (short id).
+ *
+ * The object obtained will be so that its identifier
+ * matches the first 'len' hexadecimal characters
+ * (packets of 4 bits) of the given 'id'.
+ * 'len' must be at least GIT_OID_MINPREFIXLEN, and
+ * long enough to identify a unique object matching
+ * the prefix; otherwise the method will fail.
+ *
+ * The generated reference is owned by the repository and
+ * should be closed with the `git_object_free` method
+ * instead of free'd manually.
+ *
+ * The 'type' parameter must match the type of the object
+ * in the odb; the method will fail otherwise.
+ * The special value 'GIT_OBJECT_ANY' may be passed to let
+ * the method guess the object's type.
+ *
+ * @param object_out pointer where to store the looked-up object
+ * @param repo the repository to look up the object
+ * @param id a short identifier for the object
+ * @param len the length of the short identifier
+ * @param type the type of the object
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_object_lookup_prefix(
+		git_object **object_out,
+		git_repository *repo,
+		const git_oid *id,
+		size_t len,
+		git_object_t type);
+
+
+/**
+ * Lookup an object that represents a tree entry.
+ *
+ * @param out buffer that receives a pointer to the object (which must be freed
+ *            by the caller)
+ * @param treeish root object that can be peeled to a tree
+ * @param path relative path from the root object to the desired object
+ * @param type type of object desired
+ * @return 0 on success, or an error code
+ */
+GIT_EXTERN(int) git_object_lookup_bypath(
+		git_object **out,
+		const git_object *treeish,
+		const char *path,
+		git_object_t type);
+
+/**
+ * Get the id (SHA1) of a repository object
+ *
+ * @param obj the repository object
+ * @return the SHA1 id
+ */
+GIT_EXTERN(const git_oid *) git_object_id(const git_object *obj);
+
+/**
+ * Get a short abbreviated OID string for the object
+ *
+ * This starts at the "core.abbrev" length (default 7 characters) and
+ * iteratively extends to a longer string if that length is ambiguous.
+ * The result will be unambiguous (at least until new objects are added to
+ * the repository).
+ *
+ * @param out Buffer to write string into
+ * @param obj The object to get an ID for
+ * @return 0 on success, <0 for error
+ */
+GIT_EXTERN(int) git_object_short_id(git_buf *out, const git_object *obj);
+
+/**
+ * Get the object type of an object
+ *
+ * @param obj the repository object
+ * @return the object's type
+ */
+GIT_EXTERN(git_object_t) git_object_type(const git_object *obj);
+
+/**
+ * Get the repository that owns this object
+ *
+ * Freeing or calling `git_repository_close` on the
+ * returned pointer will invalidate the actual object.
+ *
+ * Any other operation may be run on the repository without
+ * affecting the object.
+ *
+ * @param obj the object
+ * @return the repository who owns this object
+ */
+GIT_EXTERN(git_repository *) git_object_owner(const git_object *obj);
+
+/**
+ * Close an open object
+ *
+ * This method instructs the library to close an existing
+ * object; note that git_objects are owned and cached by the repository
+ * so the object may or may not be freed after this library call,
+ * depending on how aggressive is the caching mechanism used
+ * by the repository.
+ *
+ * IMPORTANT:
+ * It *is* necessary to call this method when you stop using
+ * an object. Failure to do so will cause a memory leak.
+ *
+ * @param object the object to close
+ */
+GIT_EXTERN(void) git_object_free(git_object *object);
+
+/**
+ * Convert an object type to its string representation.
+ *
+ * The result is a pointer to a string in static memory and
+ * should not be free()'ed.
+ *
+ * @param type object type to convert.
+ * @return the corresponding string representation.
+ */
+GIT_EXTERN(const char *) git_object_type2string(git_object_t type);
+
+/**
+ * Convert a string object type representation to it's git_object_t.
+ *
+ * @param str the string to convert.
+ * @return the corresponding git_object_t.
+ */
+GIT_EXTERN(git_object_t) git_object_string2type(const char *str);
+
+/**
+ * Determine if the given git_object_t is a valid loose object type.
+ *
+ * @param type object type to test.
+ * @return true if the type represents a valid loose object type,
+ * false otherwise.
+ */
+GIT_EXTERN(int) git_object_typeisloose(git_object_t type);
+
+/**
+ * Recursively peel an object until an object of the specified type is met.
+ *
+ * If the query cannot be satisfied due to the object model,
+ * GIT_EINVALIDSPEC will be returned (e.g. trying to peel a blob to a
+ * tree).
+ *
+ * If you pass `GIT_OBJECT_ANY` as the target type, then the object will
+ * be peeled until the type changes. A tag will be peeled until the
+ * referenced object is no longer a tag, and a commit will be peeled
+ * to a tree. Any other object type will return GIT_EINVALIDSPEC.
+ *
+ * If peeling a tag we discover an object which cannot be peeled to
+ * the target type due to the object model, GIT_EPEEL will be
+ * returned.
+ *
+ * You must free the returned object.
+ *
+ * @param peeled Pointer to the peeled git_object
+ * @param object The object to be processed
+ * @param target_type The type of the requested object (a GIT_OBJECT_ value)
+ * @return 0 on success, GIT_EINVALIDSPEC, GIT_EPEEL, or an error code
+ */
+GIT_EXTERN(int) git_object_peel(
+	git_object **peeled,
+	const git_object *object,
+	git_object_t target_type);
+
+/**
+ * Create an in-memory copy of a Git object. The copy must be
+ * explicitly free'd or it will leak.
+ *
+ * @param dest Pointer to store the copy of the object
+ * @param source Original object to copy
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_object_dup(git_object **dest, git_object *source);
+
+#ifdef GIT_EXPERIMENTAL_SHA256
+/**
+ * Analyzes a buffer of raw object content and determines its validity.
+ * Tree, commit, and tag objects will be parsed and ensured that they
+ * are valid, parseable content.  (Blobs are always valid by definition.)
+ * An error message will be set with an informative message if the object
+ * is not valid.
+ *
+ * @warning This function is experimental and its signature may change in
+ * the future.
+ *
+ * @param valid Output pointer to set with validity of the object content
+ * @param buf The contents to validate
+ * @param len The length of the buffer
+ * @param object_type The type of the object in the buffer
+ * @param oid_type The object ID type for the OIDs in the given buffer
+ * @return 0 on success or an error code
+ */
+GIT_EXTERN(int) git_object_rawcontent_is_valid(
+	int *valid,
+	const char *buf,
+	size_t len,
+	git_object_t object_type,
+	git_oid_t oid_type);
+#else
+/**
+ * Analyzes a buffer of raw object content and determines its validity.
+ * Tree, commit, and tag objects will be parsed and ensured that they
+ * are valid, parseable content.  (Blobs are always valid by definition.)
+ * An error message will be set with an informative message if the object
+ * is not valid.
+ *
+ * @warning This function is experimental and its signature may change in
+ * the future.
+ *
+ * @param valid Output pointer to set with validity of the object content
+ * @param buf The contents to validate
+ * @param len The length of the buffer
+ * @param object_type The type of the object in the buffer
+ * @return 0 on success or an error code
+ */
+GIT_EXTERN(int) git_object_rawcontent_is_valid(
+	int *valid,
+	const char *buf,
+	size_t len,
+	git_object_t object_type);
+#endif
+
+/** @} */
+GIT_END_DECL
+
+#endif

3rdparty/libgit2/include/git2/odb.h

@@ -0,0 +1,654 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_odb_h__
+#define INCLUDE_git_odb_h__
+
+#include "common.h"
+#include "types.h"
+#include "oid.h"
+#include "oidarray.h"
+#include "indexer.h"
+
+/**
+ * @file git2/odb.h
+ * @brief Git object database routines
+ * @defgroup git_odb Git object database routines
+ * @ingroup Git
+ * @{
+ */
+GIT_BEGIN_DECL
+
+/** Flags controlling the behavior of ODB lookup operations */
+typedef enum {
+	/**
+	 * Don't call `git_odb_refresh` if the lookup fails. Useful when doing
+	 * a batch of lookup operations for objects that may legitimately not
+	 * exist. When using this flag, you may wish to manually call
+	 * `git_odb_refresh` before processing a batch of objects.
+	 */
+	GIT_ODB_LOOKUP_NO_REFRESH = (1 << 0)
+} git_odb_lookup_flags_t;
+
+/**
+ * Function type for callbacks from git_odb_foreach.
+ */
+typedef int GIT_CALLBACK(git_odb_foreach_cb)(const git_oid *id, void *payload);
+
+/** Options for configuring a loose object backend. */
+typedef struct {
+	unsigned int version; /**< version for the struct */
+
+	/**
+	 * Type of object IDs to use for this object database, or
+	 * 0 for default (currently SHA1).
+	 */
+	git_oid_t oid_type;
+} git_odb_options;
+
+/* The current version of the diff options structure */
+#define GIT_ODB_OPTIONS_VERSION 1
+
+/* Stack initializer for odb options.  Alternatively use
+ * `git_odb_options_init` programmatic initialization.
+ */
+#define GIT_ODB_OPTIONS_INIT { GIT_ODB_OPTIONS_VERSION }
+
+/**
+ * Create a new object database with no backends.
+ *
+ * Before the ODB can be used for read/writing, a custom database
+ * backend must be manually added using `git_odb_add_backend()`
+ *
+ * @param out location to store the database pointer, if opened.
+ *			Set to NULL if the open failed.
+ * @param opts the options for this object database or NULL for defaults
+ * @return 0 or an error code
+ */
+#ifdef GIT_EXPERIMENTAL_SHA256
+GIT_EXTERN(int) git_odb_new(git_odb **out, const git_odb_options *opts);
+#else
+GIT_EXTERN(int) git_odb_new(git_odb **out);
+#endif
+
+/**
+ * Create a new object database and automatically add
+ * the two default backends:
+ *
+ *	- git_odb_backend_loose: read and write loose object files
+ *		from disk, assuming `objects_dir` as the Objects folder
+ *
+ *	- git_odb_backend_pack: read objects from packfiles,
+ *		assuming `objects_dir` as the Objects folder which
+ *		contains a 'pack/' folder with the corresponding data
+ *
+ * @param out location to store the database pointer, if opened.
+ *			Set to NULL if the open failed.
+ * @param objects_dir path of the backends' "objects" directory.
+ * @param opts the options for this object database or NULL for defaults
+ * @return 0 or an error code
+ */
+#ifdef GIT_EXPERIMENTAL_SHA256
+GIT_EXTERN(int) git_odb_open(
+	git_odb **out,
+	const char *objects_dir,
+	const git_odb_options *opts);
+#else
+GIT_EXTERN(int) git_odb_open(git_odb **out, const char *objects_dir);
+#endif
+
+/**
+ * Add an on-disk alternate to an existing Object DB.
+ *
+ * Note that the added path must point to an `objects`, not
+ * to a full repository, to use it as an alternate store.
+ *
+ * Alternate backends are always checked for objects *after*
+ * all the main backends have been exhausted.
+ *
+ * Writing is disabled on alternate backends.
+ *
+ * @param odb database to add the backend to
+ * @param path path to the objects folder for the alternate
+ * @return 0 on success, error code otherwise
+ */
+GIT_EXTERN(int) git_odb_add_disk_alternate(git_odb *odb, const char *path);
+
+/**
+ * Close an open object database.
+ *
+ * @param db database pointer to close. If NULL no action is taken.
+ */
+GIT_EXTERN(void) git_odb_free(git_odb *db);
+
+/**
+ * Read an object from the database.
+ *
+ * This method queries all available ODB backends
+ * trying to read the given OID.
+ *
+ * The returned object is reference counted and
+ * internally cached, so it should be closed
+ * by the user once it's no longer in use.
+ *
+ * @param out pointer where to store the read object
+ * @param db database to search for the object in.
+ * @param id identity of the object to read.
+ * @return 0 if the object was read, GIT_ENOTFOUND if the object is
+ *         not in the database.
+ */
+GIT_EXTERN(int) git_odb_read(git_odb_object **out, git_odb *db, const git_oid *id);
+
+/**
+ * Read an object from the database, given a prefix
+ * of its identifier.
+ *
+ * This method queries all available ODB backends
+ * trying to match the 'len' first hexadecimal
+ * characters of the 'short_id'.
+ * The remaining (GIT_OID_SHA1_HEXSIZE-len)*4 bits of
+ * 'short_id' must be 0s.
+ * 'len' must be at least GIT_OID_MINPREFIXLEN,
+ * and the prefix must be long enough to identify
+ * a unique object in all the backends; the
+ * method will fail otherwise.
+ *
+ * The returned object is reference counted and
+ * internally cached, so it should be closed
+ * by the user once it's no longer in use.
+ *
+ * @param out pointer where to store the read object
+ * @param db database to search for the object in.
+ * @param short_id a prefix of the id of the object to read.
+ * @param len the length of the prefix
+ * @return 0 if the object was read, GIT_ENOTFOUND if the object is not in the
+ *         database. GIT_EAMBIGUOUS if the prefix is ambiguous
+ *         (several objects match the prefix)
+ */
+GIT_EXTERN(int) git_odb_read_prefix(git_odb_object **out, git_odb *db, const git_oid *short_id, size_t len);
+
+/**
+ * Read the header of an object from the database, without
+ * reading its full contents.
+ *
+ * The header includes the length and the type of an object.
+ *
+ * Note that most backends do not support reading only the header
+ * of an object, so the whole object will be read and then the
+ * header will be returned.
+ *
+ * @param len_out pointer where to store the length
+ * @param type_out pointer where to store the type
+ * @param db database to search for the object in.
+ * @param id identity of the object to read.
+ * @return 0 if the object was read, GIT_ENOTFOUND if the object is not
+ *         in the database.
+ */
+GIT_EXTERN(int) git_odb_read_header(size_t *len_out, git_object_t *type_out, git_odb *db, const git_oid *id);
+
+/**
+ * Determine if the given object can be found in the object database.
+ *
+ * @param db database to be searched for the given object.
+ * @param id the object to search for.
+ * @return 1 if the object was found, 0 otherwise
+ */
+GIT_EXTERN(int) git_odb_exists(git_odb *db, const git_oid *id);
+
+/**
+ * Determine if the given object can be found in the object database, with
+ * extended options.
+ *
+ * @param db database to be searched for the given object.
+ * @param id the object to search for.
+ * @param flags flags affecting the lookup (see `git_odb_lookup_flags_t`)
+ * @return 1 if the object was found, 0 otherwise
+ */
+GIT_EXTERN(int) git_odb_exists_ext(git_odb *db, const git_oid *id, unsigned int flags);
+
+/**
+ * Determine if an object can be found in the object database by an
+ * abbreviated object ID.
+ *
+ * @param out The full OID of the found object if just one is found.
+ * @param db The database to be searched for the given object.
+ * @param short_id A prefix of the id of the object to read.
+ * @param len The length of the prefix.
+ * @return 0 if found, GIT_ENOTFOUND if not found, GIT_EAMBIGUOUS if multiple
+ *         matches were found, other value < 0 if there was a read error.
+ */
+GIT_EXTERN(int) git_odb_exists_prefix(
+	git_oid *out, git_odb *db, const git_oid *short_id, size_t len);
+
+/**
+ * The information about object IDs to query in `git_odb_expand_ids`,
+ * which will be populated upon return.
+ */
+typedef struct git_odb_expand_id {
+	/** The object ID to expand */
+	git_oid id;
+
+	/**
+	 * The length of the object ID (in nibbles, or packets of 4 bits; the
+	 * number of hex characters)
+	 * */
+	unsigned short length;
+
+	/**
+	 * The (optional) type of the object to search for; leave as `0` or set
+	 * to `GIT_OBJECT_ANY` to query for any object matching the ID.
+	 */
+	git_object_t type;
+} git_odb_expand_id;
+
+/**
+ * Determine if one or more objects can be found in the object database
+ * by their abbreviated object ID and type.
+ *
+ * The given array will be updated in place: for each abbreviated ID that is
+ * unique in the database, and of the given type (if specified),
+ * the full object ID, object ID length (`GIT_OID_SHA1_HEXSIZE`) and type will be
+ * written back to the array. For IDs that are not found (or are ambiguous),
+ * the array entry will be zeroed.
+ *
+ * Note that since this function operates on multiple objects, the
+ * underlying database will not be asked to be reloaded if an object is
+ * not found (which is unlike other object database operations.)
+ *
+ * @param db The database to be searched for the given objects.
+ * @param ids An array of short object IDs to search for
+ * @param count The length of the `ids` array
+ * @return 0 on success or an error code on failure
+ */
+GIT_EXTERN(int) git_odb_expand_ids(
+	git_odb *db,
+	git_odb_expand_id *ids,
+	size_t count);
+
+/**
+ * Refresh the object database to load newly added files.
+ *
+ * If the object databases have changed on disk while the library
+ * is running, this function will force a reload of the underlying
+ * indexes.
+ *
+ * Use this function when you're confident that an external
+ * application has tampered with the ODB.
+ *
+ * NOTE that it is not necessary to call this function at all. The
+ * library will automatically attempt to refresh the ODB
+ * when a lookup fails, to see if the looked up object exists
+ * on disk but hasn't been loaded yet.
+ *
+ * @param db database to refresh
+ * @return 0 on success, error code otherwise
+ */
+GIT_EXTERN(int) git_odb_refresh(struct git_odb *db);
+
+/**
+ * List all objects available in the database
+ *
+ * The callback will be called for each object available in the
+ * database. Note that the objects are likely to be returned in the index
+ * order, which would make accessing the objects in that order inefficient.
+ * Return a non-zero value from the callback to stop looping.
+ *
+ * @param db database to use
+ * @param cb the callback to call for each object
+ * @param payload data to pass to the callback
+ * @return 0 on success, non-zero callback return value, or error code
+ */
+GIT_EXTERN(int) git_odb_foreach(git_odb *db, git_odb_foreach_cb cb, void *payload);
+
+/**
+ * Write an object directly into the ODB
+ *
+ * This method writes a full object straight into the ODB.
+ * For most cases, it is preferred to write objects through a write
+ * stream, which is both faster and less memory intensive, specially
+ * for big objects.
+ *
+ * This method is provided for compatibility with custom backends
+ * which are not able to support streaming writes
+ *
+ * @param out pointer to store the OID result of the write
+ * @param odb object database where to store the object
+ * @param data buffer with the data to store
+ * @param len size of the buffer
+ * @param type type of the data to store
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_odb_write(git_oid *out, git_odb *odb, const void *data, size_t len, git_object_t type);
+
+/**
+ * Open a stream to write an object into the ODB
+ *
+ * The type and final length of the object must be specified
+ * when opening the stream.
+ *
+ * The returned stream will be of type `GIT_STREAM_WRONLY`, and it
+ * won't be effective until `git_odb_stream_finalize_write` is called
+ * and returns without an error
+ *
+ * The stream must always be freed when done with `git_odb_stream_free` or
+ * will leak memory.
+ *
+ * @see git_odb_stream
+ *
+ * @param out pointer where to store the stream
+ * @param db object database where the stream will write
+ * @param size final size of the object that will be written
+ * @param type type of the object that will be written
+ * @return 0 if the stream was created; error code otherwise
+ */
+GIT_EXTERN(int) git_odb_open_wstream(git_odb_stream **out, git_odb *db, git_object_size_t size, git_object_t type);
+
+/**
+ * Write to an odb stream
+ *
+ * This method will fail if the total number of received bytes exceeds the
+ * size declared with `git_odb_open_wstream()`
+ *
+ * @param stream the stream
+ * @param buffer the data to write
+ * @param len the buffer's length
+ * @return 0 if the write succeeded, error code otherwise
+ */
+GIT_EXTERN(int) git_odb_stream_write(git_odb_stream *stream, const char *buffer, size_t len);
+
+/**
+ * Finish writing to an odb stream
+ *
+ * The object will take its final name and will be available to the
+ * odb.
+ *
+ * This method will fail if the total number of received bytes
+ * differs from the size declared with `git_odb_open_wstream()`
+ *
+ * @param out pointer to store the resulting object's id
+ * @param stream the stream
+ * @return 0 on success, an error code otherwise
+ */
+GIT_EXTERN(int) git_odb_stream_finalize_write(git_oid *out, git_odb_stream *stream);
+
+/**
+ * Read from an odb stream
+ *
+ * Most backends don't implement streaming reads
+ *
+ * @param stream the stream
+ * @param buffer a user-allocated buffer to store the data in.
+ * @param len the buffer's length
+ * @return 0 if the read succeeded, error code otherwise
+ */
+GIT_EXTERN(int) git_odb_stream_read(git_odb_stream *stream, char *buffer, size_t len);
+
+/**
+ * Free an odb stream
+ *
+ * @param stream the stream to free
+ */
+GIT_EXTERN(void) git_odb_stream_free(git_odb_stream *stream);
+
+/**
+ * Open a stream to read an object from the ODB
+ *
+ * Note that most backends do *not* support streaming reads
+ * because they store their objects as compressed/delta'ed blobs.
+ *
+ * It's recommended to use `git_odb_read` instead, which is
+ * assured to work on all backends.
+ *
+ * The returned stream will be of type `GIT_STREAM_RDONLY` and
+ * will have the following methods:
+ *
+ *		- stream->read: read `n` bytes from the stream
+ *		- stream->free: free the stream
+ *
+ * The stream must always be free'd or will leak memory.
+ *
+ * @see git_odb_stream
+ *
+ * @param out pointer where to store the stream
+ * @param len pointer where to store the length of the object
+ * @param type pointer where to store the type of the object
+ * @param db object database where the stream will read from
+ * @param oid oid of the object the stream will read from
+ * @return 0 if the stream was created, error code otherwise
+ */
+GIT_EXTERN(int) git_odb_open_rstream(
+	git_odb_stream **out,
+	size_t *len,
+	git_object_t *type,
+	git_odb *db,
+	const git_oid *oid);
+
+/**
+ * Open a stream for writing a pack file to the ODB.
+ *
+ * If the ODB layer understands pack files, then the given
+ * packfile will likely be streamed directly to disk (and a
+ * corresponding index created).  If the ODB layer does not
+ * understand pack files, the objects will be stored in whatever
+ * format the ODB layer uses.
+ *
+ * @see git_odb_writepack
+ *
+ * @param out pointer to the writepack functions
+ * @param db object database where the stream will read from
+ * @param progress_cb function to call with progress information.
+ * Be aware that this is called inline with network and indexing operations,
+ * so performance may be affected.
+ * @param progress_payload payload for the progress callback
+ * @return 0 or an error code.
+ */
+GIT_EXTERN(int) git_odb_write_pack(
+	git_odb_writepack **out,
+	git_odb *db,
+	git_indexer_progress_cb progress_cb,
+	void *progress_payload);
+
+/**
+ * Write a `multi-pack-index` file from all the `.pack` files in the ODB.
+ *
+ * If the ODB layer understands pack files, then this will create a file called
+ * `multi-pack-index` next to the `.pack` and `.idx` files, which will contain
+ * an index of all objects stored in `.pack` files. This will allow for
+ * O(log n) lookup for n objects (regardless of how many packfiles there
+ * exist).
+ *
+ * @param db object database where the `multi-pack-index` file will be written.
+ * @return 0 or an error code.
+ */
+GIT_EXTERN(int) git_odb_write_multi_pack_index(
+	git_odb *db);
+
+/**
+ * Determine the object-ID (sha1 or sha256 hash) of a data buffer
+ *
+ * The resulting OID will be the identifier for the data buffer as if
+ * the data buffer it were to written to the ODB.
+ *
+ * @param out the resulting object-ID.
+ * @param data data to hash
+ * @param len size of the data
+ * @param object_type of the data to hash
+ * @param oid_type the oid type to hash to
+ * @return 0 or an error code
+ */
+#ifdef GIT_EXPERIMENTAL_SHA256
+GIT_EXTERN(int) git_odb_hash(
+	git_oid *out,
+	const void *data,
+	size_t len,
+	git_object_t object_type,
+	git_oid_t oid_type);
+#else
+GIT_EXTERN(int) git_odb_hash(git_oid *out, const void *data, size_t len, git_object_t type);
+#endif
+
+/**
+ * Read a file from disk and fill a git_oid with the object id
+ * that the file would have if it were written to the Object
+ * Database as an object of the given type (w/o applying filters).
+ * Similar functionality to git.git's `git hash-object` without
+ * the `-w` flag, however, with the --no-filters flag.
+ * If you need filters, see git_repository_hashfile.
+ *
+ * @param out oid structure the result is written into.
+ * @param path file to read and determine object id for
+ * @param object_type of the data to hash
+ * @param oid_type the oid type to hash to
+ * @return 0 or an error code
+ */
+#ifdef GIT_EXPERIMENTAL_SHA256
+GIT_EXTERN(int) git_odb_hashfile(
+	git_oid *out,
+	const char *path,
+	git_object_t object_type,
+	git_oid_t oid_type);
+#else
+GIT_EXTERN(int) git_odb_hashfile(git_oid *out, const char *path, git_object_t type);
+#endif
+
+/**
+ * Create a copy of an odb_object
+ *
+ * The returned copy must be manually freed with `git_odb_object_free`.
+ * Note that because of an implementation detail, the returned copy will be
+ * the same pointer as `source`: the object is internally refcounted, so the
+ * copy still needs to be freed twice.
+ *
+ * @param dest pointer where to store the copy
+ * @param source object to copy
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_odb_object_dup(git_odb_object **dest, git_odb_object *source);
+
+/**
+ * Close an ODB object
+ *
+ * This method must always be called once a `git_odb_object` is no
+ * longer needed, otherwise memory will leak.
+ *
+ * @param object object to close
+ */
+GIT_EXTERN(void) git_odb_object_free(git_odb_object *object);
+
+/**
+ * Return the OID of an ODB object
+ *
+ * This is the OID from which the object was read from
+ *
+ * @param object the object
+ * @return a pointer to the OID
+ */
+GIT_EXTERN(const git_oid *) git_odb_object_id(git_odb_object *object);
+
+/**
+ * Return the data of an ODB object
+ *
+ * This is the uncompressed, raw data as read from the ODB,
+ * without the leading header.
+ *
+ * This pointer is owned by the object and shall not be free'd.
+ *
+ * @param object the object
+ * @return a pointer to the data
+ */
+GIT_EXTERN(const void *) git_odb_object_data(git_odb_object *object);
+
+/**
+ * Return the size of an ODB object
+ *
+ * This is the real size of the `data` buffer, not the
+ * actual size of the object.
+ *
+ * @param object the object
+ * @return the size
+ */
+GIT_EXTERN(size_t) git_odb_object_size(git_odb_object *object);
+
+/**
+ * Return the type of an ODB object
+ *
+ * @param object the object
+ * @return the type
+ */
+GIT_EXTERN(git_object_t) git_odb_object_type(git_odb_object *object);
+
+/**
+ * Add a custom backend to an existing Object DB
+ *
+ * The backends are checked in relative ordering, based on the
+ * value of the `priority` parameter.
+ *
+ * Read <sys/odb_backend.h> for more information.
+ *
+ * @param odb database to add the backend to
+ * @param backend pointer to a git_odb_backend instance
+ * @param priority Value for ordering the backends queue
+ * @return 0 on success, error code otherwise
+ */
+GIT_EXTERN(int) git_odb_add_backend(git_odb *odb, git_odb_backend *backend, int priority);
+
+/**
+ * Add a custom backend to an existing Object DB; this
+ * backend will work as an alternate.
+ *
+ * Alternate backends are always checked for objects *after*
+ * all the main backends have been exhausted.
+ *
+ * The backends are checked in relative ordering, based on the
+ * value of the `priority` parameter.
+ *
+ * Writing is disabled on alternate backends.
+ *
+ * Read <sys/odb_backend.h> for more information.
+ *
+ * @param odb database to add the backend to
+ * @param backend pointer to a git_odb_backend instance
+ * @param priority Value for ordering the backends queue
+ * @return 0 on success, error code otherwise
+ */
+GIT_EXTERN(int) git_odb_add_alternate(git_odb *odb, git_odb_backend *backend, int priority);
+
+/**
+ * Get the number of ODB backend objects
+ *
+ * @param odb object database
+ * @return number of backends in the ODB
+ */
+GIT_EXTERN(size_t) git_odb_num_backends(git_odb *odb);
+
+/**
+ * Lookup an ODB backend object by index
+ *
+ * @param out output pointer to ODB backend at pos
+ * @param odb object database
+ * @param pos index into object database backend list
+ * @return 0 on success, GIT_ENOTFOUND if pos is invalid, other errors < 0
+ */
+GIT_EXTERN(int) git_odb_get_backend(git_odb_backend **out, git_odb *odb, size_t pos);
+
+/**
+ * Set the git commit-graph for the ODB.
+ *
+ * After a successful call, the ownership of the cgraph parameter will be
+ * transferred to libgit2, and the caller should not free it.
+ *
+ * The commit-graph can also be unset by explicitly passing NULL as the cgraph
+ * parameter.
+ *
+ * @param odb object database
+ * @param cgraph the git commit-graph
+ * @return 0 on success; error code otherwise
+ */
+GIT_EXTERN(int) git_odb_set_commit_graph(git_odb *odb, git_commit_graph *cgraph);
+
+/** @} */
+GIT_END_DECL
+#endif

3rdparty/libgit2/include/git2/odb_backend.h

@@ -0,0 +1,223 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_odb_backend_h__
+#define INCLUDE_git_odb_backend_h__
+
+#include "common.h"
+#include "types.h"
+#include "indexer.h"
+
+/**
+ * @file git2/backend.h
+ * @brief Git custom backend functions
+ * @defgroup git_odb Git object database routines
+ * @ingroup Git
+ * @{
+ */
+GIT_BEGIN_DECL
+
+/*
+ * Constructors for in-box ODB backends.
+ */
+
+/** Options for configuring a packfile object backend. */
+typedef struct {
+	unsigned int version; /**< version for the struct */
+
+	/**
+	 * Type of object IDs to use for this object database, or
+	 * 0 for default (currently SHA1).
+	 */
+	git_oid_t oid_type;
+} git_odb_backend_pack_options;
+
+/* The current version of the diff options structure */
+#define GIT_ODB_BACKEND_PACK_OPTIONS_VERSION 1
+
+/* Stack initializer for odb pack backend options.  Alternatively use
+ * `git_odb_backend_pack_options_init` programmatic initialization.
+ */
+#define GIT_ODB_BACKEND_PACK_OPTIONS_INIT \
+	{ GIT_ODB_BACKEND_PACK_OPTIONS_VERSION }
+
+/**
+ * Create a backend for the packfiles.
+ *
+ * @param out location to store the odb backend pointer
+ * @param objects_dir the Git repository's objects directory
+ *
+ * @return 0 or an error code
+ */
+#ifdef GIT_EXPERIMENTAL_SHA256
+GIT_EXTERN(int) git_odb_backend_pack(
+	git_odb_backend **out,
+	const char *objects_dir,
+	const git_odb_backend_pack_options *opts);
+#else
+GIT_EXTERN(int) git_odb_backend_pack(
+	git_odb_backend **out,
+	const char *objects_dir);
+#endif
+
+/**
+ * Create a backend out of a single packfile
+ *
+ * This can be useful for inspecting the contents of a single
+ * packfile.
+ *
+ * @param out location to store the odb backend pointer
+ * @param index_file path to the packfile's .idx file
+ *
+ * @return 0 or an error code
+ */
+#ifdef GIT_EXPERIMENTAL_SHA256
+GIT_EXTERN(int) git_odb_backend_one_pack(
+	git_odb_backend **out,
+	const char *index_file,
+	const git_odb_backend_pack_options *opts);
+#else
+GIT_EXTERN(int) git_odb_backend_one_pack(
+	git_odb_backend **out,
+	const char *index_file);
+#endif
+
+typedef enum {
+	GIT_ODB_BACKEND_LOOSE_FSYNC = (1 << 0)
+} git_odb_backend_loose_flag_t;
+
+/** Options for configuring a loose object backend. */
+typedef struct {
+	unsigned int version; /**< version for the struct */
+
+	/** A combination of the `git_odb_backend_loose_flag_t` types. */
+	uint32_t flags;
+
+	/**
+	 * zlib compression level to use (0-9), where 1 is the fastest
+	 * at the expense of larger files, and 9 produces the best
+	 * compression at the expense of speed.  0 indicates that no
+	 * compression should be performed.  -1 is the default (currently
+	 * optimizing for speed).
+	 */
+	int compression_level;
+
+	/** Permissions to use creating a directory or 0 for defaults */
+	unsigned int dir_mode;
+
+	/** Permissions to use creating a file or 0 for defaults */
+	unsigned int file_mode;
+
+	/**
+	 * Type of object IDs to use for this object database, or
+	 * 0 for default (currently SHA1).
+	 */
+	git_oid_t oid_type;
+} git_odb_backend_loose_options;
+
+/* The current version of the diff options structure */
+#define GIT_ODB_BACKEND_LOOSE_OPTIONS_VERSION 1
+
+/* Stack initializer for odb loose backend options.  Alternatively use
+ * `git_odb_backend_loose_options_init` programmatic initialization.
+ */
+#define GIT_ODB_BACKEND_LOOSE_OPTIONS_INIT \
+	{ GIT_ODB_BACKEND_LOOSE_OPTIONS_VERSION, 0, -1 }
+
+/**
+ * Create a backend for loose objects
+ *
+ * @param out location to store the odb backend pointer
+ * @param objects_dir the Git repository's objects directory
+ * @param opts options for the loose object backend or NULL
+ *
+ * @return 0 or an error code
+ */
+#ifdef GIT_EXPERIMENTAL_SHA256
+GIT_EXTERN(int) git_odb_backend_loose(
+	git_odb_backend **out,
+	const char *objects_dir,
+	git_odb_backend_loose_options *opts);
+#else
+GIT_EXTERN(int) git_odb_backend_loose(
+	git_odb_backend **out,
+	const char *objects_dir,
+	int compression_level,
+	int do_fsync,
+	unsigned int dir_mode,
+	unsigned int file_mode);
+#endif
+
+/** Streaming mode */
+typedef enum {
+	GIT_STREAM_RDONLY = (1 << 1),
+	GIT_STREAM_WRONLY = (1 << 2),
+	GIT_STREAM_RW = (GIT_STREAM_RDONLY | GIT_STREAM_WRONLY)
+} git_odb_stream_t;
+
+/**
+ * A stream to read/write from a backend.
+ *
+ * This represents a stream of data being written to or read from a
+ * backend. When writing, the frontend functions take care of
+ * calculating the object's id and all `finalize_write` needs to do is
+ * store the object with the id it is passed.
+ */
+struct git_odb_stream {
+	git_odb_backend *backend;
+	unsigned int mode;
+	void *hash_ctx;
+
+#ifdef GIT_EXPERIMENTAL_SHA256
+	git_oid_t oid_type;
+#endif
+
+	git_object_size_t declared_size;
+	git_object_size_t received_bytes;
+
+	/**
+	 * Write at most `len` bytes into `buffer` and advance the stream.
+	 */
+	int GIT_CALLBACK(read)(git_odb_stream *stream, char *buffer, size_t len);
+
+	/**
+	 * Write `len` bytes from `buffer` into the stream.
+	 */
+	int GIT_CALLBACK(write)(git_odb_stream *stream, const char *buffer, size_t len);
+
+	/**
+	 * Store the contents of the stream as an object with the id
+	 * specified in `oid`.
+	 *
+	 * This method might not be invoked if:
+	 * - an error occurs earlier with the `write` callback,
+	 * - the object referred to by `oid` already exists in any backend, or
+	 * - the final number of received bytes differs from the size declared
+	 *   with `git_odb_open_wstream()`
+	 */
+	int GIT_CALLBACK(finalize_write)(git_odb_stream *stream, const git_oid *oid);
+
+	/**
+	 * Free the stream's memory.
+	 *
+	 * This method might be called without a call to `finalize_write` if
+	 * an error occurs or if the object is already present in the ODB.
+	 */
+	void GIT_CALLBACK(free)(git_odb_stream *stream);
+};
+
+/** A stream to write a pack file to the ODB */
+struct git_odb_writepack {
+	git_odb_backend *backend;
+
+	int GIT_CALLBACK(append)(git_odb_writepack *writepack, const void *data, size_t size, git_indexer_progress *stats);
+	int GIT_CALLBACK(commit)(git_odb_writepack *writepack, git_indexer_progress *stats);
+	void GIT_CALLBACK(free)(git_odb_writepack *writepack);
+};
+
+GIT_END_DECL
+
+#endif

3rdparty/libgit2/include/git2/oid.h

@@ -0,0 +1,373 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_oid_h__
+#define INCLUDE_git_oid_h__
+
+#include "common.h"
+#include "types.h"
+#include "experimental.h"
+
+/**
+ * @file git2/oid.h
+ * @brief Git object id routines
+ * @defgroup git_oid Git object id routines
+ * @ingroup Git
+ * @{
+ */
+GIT_BEGIN_DECL
+
+/** The type of object id. */
+typedef enum {
+
+#ifdef GIT_EXPERIMENTAL_SHA256
+	GIT_OID_SHA1 = 1,  /**< SHA1 */
+	GIT_OID_SHA256 = 2 /**< SHA256 */
+#else
+	GIT_OID_SHA1 = 1   /**< SHA1 */
+#endif
+
+} git_oid_t;
+
+/*
+ * SHA1 is currently the only supported object ID type.
+ */
+
+/** SHA1 is currently libgit2's default oid type. */
+#define GIT_OID_DEFAULT         GIT_OID_SHA1
+
+/** Size (in bytes) of a raw/binary sha1 oid */
+#define GIT_OID_SHA1_SIZE       20
+/** Size (in bytes) of a hex formatted sha1 oid */
+#define GIT_OID_SHA1_HEXSIZE   (GIT_OID_SHA1_SIZE * 2)
+
+/**
+ * The binary representation of the null sha1 object ID.
+ */
+#ifndef GIT_EXPERIMENTAL_SHA256
+# define GIT_OID_SHA1_ZERO   { { 0 } }
+#else
+# define GIT_OID_SHA1_ZERO   { GIT_OID_SHA1, { 0 } }
+#endif
+
+/**
+ * The string representation of the null sha1 object ID.
+ */
+#define GIT_OID_SHA1_HEXZERO   "0000000000000000000000000000000000000000"
+
+/*
+ * Experimental SHA256 support is a breaking change to the API.
+ * This exists for application compatibility testing.
+ */
+
+#ifdef GIT_EXPERIMENTAL_SHA256
+
+/** Size (in bytes) of a raw/binary sha256 oid */
+# define GIT_OID_SHA256_SIZE     32
+/** Size (in bytes) of a hex formatted sha256 oid */
+# define GIT_OID_SHA256_HEXSIZE (GIT_OID_SHA256_SIZE * 2)
+
+/**
+ * The binary representation of the null sha256 object ID.
+ */
+# define GIT_OID_SHA256_ZERO { GIT_OID_SHA256, { 0 } }
+
+/**
+ * The string representation of the null sha256 object ID.
+ */
+# define GIT_OID_SHA256_HEXZERO "0000000000000000000000000000000000000000000000000000000000000000"
+
+#endif
+
+/* Maximum possible object ID size in raw / hex string format. */
+#ifndef GIT_EXPERIMENTAL_SHA256
+# define GIT_OID_MAX_SIZE        GIT_OID_SHA1_SIZE
+# define GIT_OID_MAX_HEXSIZE     GIT_OID_SHA1_HEXSIZE
+#else
+# define GIT_OID_MAX_SIZE        GIT_OID_SHA256_SIZE
+# define GIT_OID_MAX_HEXSIZE     GIT_OID_SHA256_HEXSIZE
+#endif
+
+/** Minimum length (in number of hex characters,
+ * i.e. packets of 4 bits) of an oid prefix */
+#define GIT_OID_MINPREFIXLEN 4
+
+/** Unique identity of any object (commit, tree, blob, tag). */
+typedef struct git_oid {
+
+#ifdef GIT_EXPERIMENTAL_SHA256
+	/** type of object id */
+	unsigned char type;
+#endif
+
+	/** raw binary formatted id */
+	unsigned char id[GIT_OID_MAX_SIZE];
+} git_oid;
+
+/**
+ * Parse a hex formatted object id into a git_oid.
+ *
+ * The appropriate number of bytes for the given object ID type will
+ * be read from the string - 40 bytes for SHA1, 64 bytes for SHA256.
+ * The given string need not be NUL terminated.
+ *
+ * @param out oid structure the result is written into.
+ * @param str input hex string; must be pointing at the start of
+ *		the hex sequence and have at least the number of bytes
+ *		needed for an oid encoded in hex (40 bytes for sha1,
+ *		256 bytes for sha256).
+ * @param type the type of object id
+ * @return 0 or an error code
+ */
+#ifdef GIT_EXPERIMENTAL_SHA256
+GIT_EXTERN(int) git_oid_fromstr(git_oid *out, const char *str, git_oid_t type);
+#else
+GIT_EXTERN(int) git_oid_fromstr(git_oid *out, const char *str);
+#endif
+
+/**
+ * Parse a hex formatted NUL-terminated string into a git_oid.
+ *
+ * @param out oid structure the result is written into.
+ * @param str input hex string; must be null-terminated.
+ * @param type the type of object id
+ * @return 0 or an error code
+ */
+#ifdef GIT_EXPERIMENTAL_SHA256
+GIT_EXTERN(int) git_oid_fromstrp(git_oid *out, const char *str, git_oid_t type);
+#else
+GIT_EXTERN(int) git_oid_fromstrp(git_oid *out, const char *str);
+#endif
+
+/**
+ * Parse N characters of a hex formatted object id into a git_oid.
+ *
+ * If N is odd, the last byte's high nibble will be read in and the
+ * low nibble set to zero.
+ *
+ * @param out oid structure the result is written into.
+ * @param str input hex string of at least size `length`
+ * @param length length of the input string
+ * @param type the type of object id
+ * @return 0 or an error code
+ */
+#ifdef GIT_EXPERIMENTAL_SHA256
+GIT_EXTERN(int) git_oid_fromstrn(git_oid *out, const char *str, size_t length, git_oid_t type);
+#else
+GIT_EXTERN(int) git_oid_fromstrn(git_oid *out, const char *str, size_t length);
+#endif
+
+/**
+ * Copy an already raw oid into a git_oid structure.
+ *
+ * @param out oid structure the result is written into.
+ * @param raw the raw input bytes to be copied.
+ * @return 0 on success or error code
+ */
+#ifdef GIT_EXPERIMENTAL_SHA256
+GIT_EXTERN(int) git_oid_fromraw(git_oid *out, const unsigned char *raw, git_oid_t type);
+#else
+GIT_EXTERN(int) git_oid_fromraw(git_oid *out, const unsigned char *raw);
+#endif
+
+/**
+ * Format a git_oid into a hex string.
+ *
+ * @param out output hex string; must be pointing at the start of
+ *		the hex sequence and have at least the number of bytes
+ *		needed for an oid encoded in hex (40 bytes for SHA1,
+ *		64 bytes for SHA256). Only the oid digits are written;
+ *		a '\\0' terminator must be added by the caller if it is
+ *		required.
+ * @param id oid structure to format.
+ * @return 0 on success or error code
+ */
+GIT_EXTERN(int) git_oid_fmt(char *out, const git_oid *id);
+
+/**
+ * Format a git_oid into a partial hex string.
+ *
+ * @param out output hex string; you say how many bytes to write.
+ *		If the number of bytes is > GIT_OID_SHA1_HEXSIZE, extra bytes
+ *		will be zeroed; if not, a '\0' terminator is NOT added.
+ * @param n number of characters to write into out string
+ * @param id oid structure to format.
+ * @return 0 on success or error code
+ */
+GIT_EXTERN(int) git_oid_nfmt(char *out, size_t n, const git_oid *id);
+
+/**
+ * Format a git_oid into a loose-object path string.
+ *
+ * The resulting string is "aa/...", where "aa" is the first two
+ * hex digits of the oid and "..." is the remaining 38 digits.
+ *
+ * @param out output hex string; must be pointing at the start of
+ *		the hex sequence and have at least the number of bytes
+ *		needed for an oid encoded in hex (41 bytes for SHA1,
+ *		65 bytes for SHA256). Only the oid digits are written;
+ *		a '\\0' terminator must be added by the caller if it
+ *		is required.
+ * @param id oid structure to format.
+ * @return 0 on success, non-zero callback return value, or error code
+ */
+GIT_EXTERN(int) git_oid_pathfmt(char *out, const git_oid *id);
+
+/**
+ * Format a git_oid into a statically allocated c-string.
+ *
+ * The c-string is owned by the library and should not be freed
+ * by the user. If libgit2 is built with thread support, the string
+ * will be stored in TLS (i.e. one buffer per thread) to allow for
+ * concurrent calls of the function.
+ *
+ * @param oid The oid structure to format
+ * @return the c-string or NULL on failure
+ */
+GIT_EXTERN(char *) git_oid_tostr_s(const git_oid *oid);
+
+/**
+ * Format a git_oid into a buffer as a hex format c-string.
+ *
+ * If the buffer is smaller than the size of a hex-formatted oid string
+ * plus an additional byte (GIT_OID_SHA_HEXSIZE + 1 for SHA1 or
+ * GIT_OID_SHA256_HEXSIZE + 1 for SHA256), then the resulting
+ * oid c-string will be truncated to n-1 characters (but will still be
+ * NUL-byte terminated).
+ *
+ * If there are any input parameter errors (out == NULL, n == 0, oid ==
+ * NULL), then a pointer to an empty string is returned, so that the
+ * return value can always be printed.
+ *
+ * @param out the buffer into which the oid string is output.
+ * @param n the size of the out buffer.
+ * @param id the oid structure to format.
+ * @return the out buffer pointer, assuming no input parameter
+ *			errors, otherwise a pointer to an empty string.
+ */
+GIT_EXTERN(char *) git_oid_tostr(char *out, size_t n, const git_oid *id);
+
+/**
+ * Copy an oid from one structure to another.
+ *
+ * @param out oid structure the result is written into.
+ * @param src oid structure to copy from.
+ * @return 0 on success or error code
+ */
+GIT_EXTERN(int) git_oid_cpy(git_oid *out, const git_oid *src);
+
+/**
+ * Compare two oid structures.
+ *
+ * @param a first oid structure.
+ * @param b second oid structure.
+ * @return <0, 0, >0 if a < b, a == b, a > b.
+ */
+GIT_EXTERN(int) git_oid_cmp(const git_oid *a, const git_oid *b);
+
+/**
+ * Compare two oid structures for equality
+ *
+ * @param a first oid structure.
+ * @param b second oid structure.
+ * @return true if equal, false otherwise
+ */
+GIT_EXTERN(int) git_oid_equal(const git_oid *a, const git_oid *b);
+
+/**
+ * Compare the first 'len' hexadecimal characters (packets of 4 bits)
+ * of two oid structures.
+ *
+ * @param a first oid structure.
+ * @param b second oid structure.
+ * @param len the number of hex chars to compare
+ * @return 0 in case of a match
+ */
+GIT_EXTERN(int) git_oid_ncmp(const git_oid *a, const git_oid *b, size_t len);
+
+/**
+ * Check if an oid equals an hex formatted object id.
+ *
+ * @param id oid structure.
+ * @param str input hex string of an object id.
+ * @return 0 in case of a match, -1 otherwise.
+ */
+GIT_EXTERN(int) git_oid_streq(const git_oid *id, const char *str);
+
+/**
+ * Compare an oid to an hex formatted object id.
+ *
+ * @param id oid structure.
+ * @param str input hex string of an object id.
+ * @return -1 if str is not valid, <0 if id sorts before str,
+ *         0 if id matches str, >0 if id sorts after str.
+ */
+GIT_EXTERN(int) git_oid_strcmp(const git_oid *id, const char *str);
+
+/**
+ * Check is an oid is all zeros.
+ *
+ * @return 1 if all zeros, 0 otherwise.
+ */
+GIT_EXTERN(int) git_oid_is_zero(const git_oid *id);
+
+/**
+ * OID Shortener object
+ */
+typedef struct git_oid_shorten git_oid_shorten;
+
+/**
+ * Create a new OID shortener.
+ *
+ * The OID shortener is used to process a list of OIDs
+ * in text form and return the shortest length that would
+ * uniquely identify all of them.
+ *
+ * E.g. look at the result of `git log --abbrev`.
+ *
+ * @param min_length The minimal length for all identifiers,
+ *		which will be used even if shorter OIDs would still
+ *		be unique.
+ *	@return a `git_oid_shorten` instance, NULL if OOM
+ */
+GIT_EXTERN(git_oid_shorten *) git_oid_shorten_new(size_t min_length);
+
+/**
+ * Add a new OID to set of shortened OIDs and calculate
+ * the minimal length to uniquely identify all the OIDs in
+ * the set.
+ *
+ * The OID is expected to be a 40-char hexadecimal string.
+ * The OID is owned by the user and will not be modified
+ * or freed.
+ *
+ * For performance reasons, there is a hard-limit of how many
+ * OIDs can be added to a single set (around ~32000, assuming
+ * a mostly randomized distribution), which should be enough
+ * for any kind of program, and keeps the algorithm fast and
+ * memory-efficient.
+ *
+ * Attempting to add more than those OIDs will result in a
+ * GIT_ERROR_INVALID error
+ *
+ * @param os a `git_oid_shorten` instance
+ * @param text_id an OID in text form
+ * @return the minimal length to uniquely identify all OIDs
+ *		added so far to the set; or an error code (<0) if an
+ *		error occurs.
+ */
+GIT_EXTERN(int) git_oid_shorten_add(git_oid_shorten *os, const char *text_id);
+
+/**
+ * Free an OID shortener instance
+ *
+ * @param os a `git_oid_shorten` instance
+ */
+GIT_EXTERN(void) git_oid_shorten_free(git_oid_shorten *os);
+
+/** @} */
+GIT_END_DECL
+#endif

3rdparty/libgit2/include/git2/oidarray.h

@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_oidarray_h__
+#define INCLUDE_git_oidarray_h__
+
+#include "common.h"
+#include "oid.h"
+
+GIT_BEGIN_DECL
+
+/** Array of object ids */
+typedef struct git_oidarray {
+	git_oid *ids;
+	size_t count;
+} git_oidarray;
+
+/**
+ * Free the object IDs contained in an oid_array.  This method should
+ * be called on `git_oidarray` objects that were provided by the
+ * library.  Not doing so will result in a memory leak.
+ *
+ * This does not free the `git_oidarray` itself, since the library will
+ * never allocate that object directly itself.
+ *
+ * @param array git_oidarray from which to free oid data
+ */
+GIT_EXTERN(void) git_oidarray_dispose(git_oidarray *array);
+
+/** @} */
+GIT_END_DECL
+
+#endif
+

3rdparty/libgit2/include/git2/pack.h

@@ -0,0 +1,267 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_pack_h__
+#define INCLUDE_git_pack_h__
+
+#include "common.h"
+#include "oid.h"
+#include "indexer.h"
+
+/**
+ * @file git2/pack.h
+ * @brief Git pack management routines
+ *
+ * Packing objects
+ * ---------------
+ *
+ * Creation of packfiles requires two steps:
+ *
+ * - First, insert all the objects you want to put into the packfile
+ *   using `git_packbuilder_insert` and `git_packbuilder_insert_tree`.
+ *   It's important to add the objects in recency order ("in the order
+ *   that they are 'reachable' from head").
+ *
+ *   "ANY order will give you a working pack, ... [but it is] the thing
+ *   that gives packs good locality. It keeps the objects close to the
+ *   head (whether they are old or new, but they are _reachable_ from the
+ *   head) at the head of the pack. So packs actually have absolutely
+ *   _wonderful_ IO patterns." - Linus Torvalds
+ *   git.git/Documentation/technical/pack-heuristics.txt
+ *
+ * - Second, use `git_packbuilder_write` or `git_packbuilder_foreach` to
+ *   write the resulting packfile.
+ *
+ *   libgit2 will take care of the delta ordering and generation.
+ *   `git_packbuilder_set_threads` can be used to adjust the number of
+ *   threads used for the process.
+ *
+ * See tests/pack/packbuilder.c for an example.
+ *
+ * @ingroup Git
+ * @{
+ */
+GIT_BEGIN_DECL
+
+/**
+ * Stages that are reported by the packbuilder progress callback.
+ */
+typedef enum {
+	GIT_PACKBUILDER_ADDING_OBJECTS = 0,
+	GIT_PACKBUILDER_DELTAFICATION = 1
+} git_packbuilder_stage_t;
+
+/**
+ * Initialize a new packbuilder
+ *
+ * @param out The new packbuilder object
+ * @param repo The repository
+ *
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_packbuilder_new(git_packbuilder **out, git_repository *repo);
+
+/**
+ * Set number of threads to spawn
+ *
+ * By default, libgit2 won't spawn any threads at all;
+ * when set to 0, libgit2 will autodetect the number of
+ * CPUs.
+ *
+ * @param pb The packbuilder
+ * @param n Number of threads to spawn
+ * @return number of actual threads to be used
+ */
+GIT_EXTERN(unsigned int) git_packbuilder_set_threads(git_packbuilder *pb, unsigned int n);
+
+/**
+ * Insert a single object
+ *
+ * For an optimal pack it's mandatory to insert objects in recency order,
+ * commits followed by trees and blobs.
+ *
+ * @param pb The packbuilder
+ * @param id The oid of the commit
+ * @param name The name; might be NULL
+ *
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_packbuilder_insert(git_packbuilder *pb, const git_oid *id, const char *name);
+
+/**
+ * Insert a root tree object
+ *
+ * This will add the tree as well as all referenced trees and blobs.
+ *
+ * @param pb The packbuilder
+ * @param id The oid of the root tree
+ *
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_packbuilder_insert_tree(git_packbuilder *pb, const git_oid *id);
+
+/**
+ * Insert a commit object
+ *
+ * This will add a commit as well as the completed referenced tree.
+ *
+ * @param pb The packbuilder
+ * @param id The oid of the commit
+ *
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_packbuilder_insert_commit(git_packbuilder *pb, const git_oid *id);
+
+/**
+ * Insert objects as given by the walk
+ *
+ * Those commits and all objects they reference will be inserted into
+ * the packbuilder.
+ *
+ * @param pb the packbuilder
+ * @param walk the revwalk to use to fill the packbuilder
+ *
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_packbuilder_insert_walk(git_packbuilder *pb, git_revwalk *walk);
+
+/**
+ * Recursively insert an object and its referenced objects
+ *
+ * Insert the object as well as any object it references.
+ *
+ * @param pb the packbuilder
+ * @param id the id of the root object to insert
+ * @param name optional name for the object
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_packbuilder_insert_recur(git_packbuilder *pb, const git_oid *id, const char *name);
+
+/**
+ * Write the contents of the packfile to an in-memory buffer
+ *
+ * The contents of the buffer will become a valid packfile, even though there
+ * will be no attached index
+ *
+ * @param buf Buffer where to write the packfile
+ * @param pb The packbuilder
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_packbuilder_write_buf(git_buf *buf, git_packbuilder *pb);
+
+/**
+ * Write the new pack and corresponding index file to path.
+ *
+ * @param pb The packbuilder
+ * @param path Path to the directory where the packfile and index should be stored, or NULL for default location
+ * @param mode permissions to use creating a packfile or 0 for defaults
+ * @param progress_cb function to call with progress information from the indexer (optional)
+ * @param progress_cb_payload payload for the progress callback (optional)
+ *
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_packbuilder_write(
+	git_packbuilder *pb,
+	const char *path,
+	unsigned int mode,
+	git_indexer_progress_cb progress_cb,
+	void *progress_cb_payload);
+
+#ifndef GIT_DEPRECATE_HARD
+/**
+ * Get the packfile's hash
+ *
+ * A packfile's name is derived from the sorted hashing of all object
+ * names. This is only correct after the packfile has been written.
+ *
+ * @deprecated use git_packbuilder_name
+ * @param pb The packbuilder object
+ * @return 0 or an error code
+ */
+GIT_EXTERN(const git_oid *) git_packbuilder_hash(git_packbuilder *pb);
+#endif
+
+/**
+ * Get the unique name for the resulting packfile.
+ *
+ * The packfile's name is derived from the packfile's content.
+ * This is only correct after the packfile has been written.
+ *
+ * @param pb the packbuilder instance
+ * @return a NUL terminated string for the packfile name
+ */
+GIT_EXTERN(const char *) git_packbuilder_name(git_packbuilder *pb);
+
+/**
+ * Callback used to iterate over packed objects
+ *
+ * @see git_packbuilder_foreach
+ *
+ * @param buf A pointer to the object's data
+ * @param size The size of the underlying object
+ * @param payload Payload passed to git_packbuilder_foreach
+ * @return non-zero to terminate the iteration
+ */
+typedef int GIT_CALLBACK(git_packbuilder_foreach_cb)(void *buf, size_t size, void *payload);
+
+/**
+ * Create the new pack and pass each object to the callback
+ *
+ * @param pb the packbuilder
+ * @param cb the callback to call with each packed object's buffer
+ * @param payload the callback's data
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_packbuilder_foreach(git_packbuilder *pb, git_packbuilder_foreach_cb cb, void *payload);
+
+/**
+ * Get the total number of objects the packbuilder will write out
+ *
+ * @param pb the packbuilder
+ * @return the number of objects in the packfile
+ */
+GIT_EXTERN(size_t) git_packbuilder_object_count(git_packbuilder *pb);
+
+/**
+ * Get the number of objects the packbuilder has already written out
+ *
+ * @param pb the packbuilder
+ * @return the number of objects which have already been written
+ */
+GIT_EXTERN(size_t) git_packbuilder_written(git_packbuilder *pb);
+
+/** Packbuilder progress notification function */
+typedef int GIT_CALLBACK(git_packbuilder_progress)(
+	int stage,
+	uint32_t current,
+	uint32_t total,
+	void *payload);
+
+/**
+ * Set the callbacks for a packbuilder
+ *
+ * @param pb The packbuilder object
+ * @param progress_cb Function to call with progress information during
+ * pack building. Be aware that this is called inline with pack building
+ * operations, so performance may be affected.
+ * @param progress_cb_payload Payload for progress callback.
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_packbuilder_set_callbacks(
+	git_packbuilder *pb,
+	git_packbuilder_progress progress_cb,
+	void *progress_cb_payload);
+
+/**
+ * Free the packbuilder and all associated data
+ *
+ * @param pb The packbuilder
+ */
+GIT_EXTERN(void) git_packbuilder_free(git_packbuilder *pb);
+
+/** @} */
+GIT_END_DECL
+#endif

3rdparty/libgit2/include/git2/patch.h

@@ -0,0 +1,290 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_patch_h__
+#define INCLUDE_git_patch_h__
+
+#include "common.h"
+#include "types.h"
+#include "oid.h"
+#include "diff.h"
+
+/**
+ * @file git2/patch.h
+ * @brief Patch handling routines.
+ * @ingroup Git
+ * @{
+ */
+GIT_BEGIN_DECL
+
+/**
+ * The diff patch is used to store all the text diffs for a delta.
+ *
+ * You can easily loop over the content of patches and get information about
+ * them.
+ */
+typedef struct git_patch git_patch;
+
+/**
+ * Get the repository associated with this patch. May be NULL.
+ *
+ * @param patch the patch
+ * @return a pointer to the repository
+ */
+GIT_EXTERN(git_repository *) git_patch_owner(const git_patch *patch);
+
+/**
+ * Return a patch for an entry in the diff list.
+ *
+ * The `git_patch` is a newly created object contains the text diffs
+ * for the delta.  You have to call `git_patch_free()` when you are
+ * done with it.  You can use the patch object to loop over all the hunks
+ * and lines in the diff of the one delta.
+ *
+ * For an unchanged file or a binary file, no `git_patch` will be
+ * created, the output will be set to NULL, and the `binary` flag will be
+ * set true in the `git_diff_delta` structure.
+ *
+ * It is okay to pass NULL for either of the output parameters; if you pass
+ * NULL for the `git_patch`, then the text diff will not be calculated.
+ *
+ * @param out Output parameter for the delta patch object
+ * @param diff Diff list object
+ * @param idx Index into diff list
+ * @return 0 on success, other value < 0 on error
+ */
+GIT_EXTERN(int) git_patch_from_diff(
+	git_patch **out, git_diff *diff, size_t idx);
+
+/**
+ * Directly generate a patch from the difference between two blobs.
+ *
+ * This is just like `git_diff_blobs()` except it generates a patch object
+ * for the difference instead of directly making callbacks.  You can use the
+ * standard `git_patch` accessor functions to read the patch data, and
+ * you must call `git_patch_free()` on the patch when done.
+ *
+ * @param out The generated patch; NULL on error
+ * @param old_blob Blob for old side of diff, or NULL for empty blob
+ * @param old_as_path Treat old blob as if it had this filename; can be NULL
+ * @param new_blob Blob for new side of diff, or NULL for empty blob
+ * @param new_as_path Treat new blob as if it had this filename; can be NULL
+ * @param opts Options for diff, or NULL for default options
+ * @return 0 on success or error code < 0
+ */
+GIT_EXTERN(int) git_patch_from_blobs(
+	git_patch **out,
+	const git_blob *old_blob,
+	const char *old_as_path,
+	const git_blob *new_blob,
+	const char *new_as_path,
+	const git_diff_options *opts);
+
+/**
+ * Directly generate a patch from the difference between a blob and a buffer.
+ *
+ * This is just like `git_diff_blob_to_buffer()` except it generates a patch
+ * object for the difference instead of directly making callbacks.  You can
+ * use the standard `git_patch` accessor functions to read the patch
+ * data, and you must call `git_patch_free()` on the patch when done.
+ *
+ * @param out The generated patch; NULL on error
+ * @param old_blob Blob for old side of diff, or NULL for empty blob
+ * @param old_as_path Treat old blob as if it had this filename; can be NULL
+ * @param buffer Raw data for new side of diff, or NULL for empty
+ * @param buffer_len Length of raw data for new side of diff
+ * @param buffer_as_path Treat buffer as if it had this filename; can be NULL
+ * @param opts Options for diff, or NULL for default options
+ * @return 0 on success or error code < 0
+ */
+GIT_EXTERN(int) git_patch_from_blob_and_buffer(
+	git_patch **out,
+	const git_blob *old_blob,
+	const char *old_as_path,
+	const void *buffer,
+	size_t buffer_len,
+	const char *buffer_as_path,
+	const git_diff_options *opts);
+
+/**
+ * Directly generate a patch from the difference between two buffers.
+ *
+ * This is just like `git_diff_buffers()` except it generates a patch
+ * object for the difference instead of directly making callbacks.  You can
+ * use the standard `git_patch` accessor functions to read the patch
+ * data, and you must call `git_patch_free()` on the patch when done.
+ *
+ * @param out The generated patch; NULL on error
+ * @param old_buffer Raw data for old side of diff, or NULL for empty
+ * @param old_len Length of the raw data for old side of the diff
+ * @param old_as_path Treat old buffer as if it had this filename; can be NULL
+ * @param new_buffer Raw data for new side of diff, or NULL for empty
+ * @param new_len Length of raw data for new side of diff
+ * @param new_as_path Treat buffer as if it had this filename; can be NULL
+ * @param opts Options for diff, or NULL for default options
+ * @return 0 on success or error code < 0
+ */
+GIT_EXTERN(int) git_patch_from_buffers(
+	git_patch **out,
+	const void *old_buffer,
+	size_t old_len,
+	const char *old_as_path,
+	const void *new_buffer,
+	size_t new_len,
+	const char *new_as_path,
+	const git_diff_options *opts);
+
+/**
+ * Free a git_patch object.
+ *
+ * @param patch The patch to free.
+ */
+GIT_EXTERN(void) git_patch_free(git_patch *patch);
+
+/**
+ * Get the delta associated with a patch.  This delta points to internal
+ * data and you do not have to release it when you are done with it.
+ *
+ * @param patch The patch in which to get the delta.
+ * @return The delta associated with the patch.
+ */
+GIT_EXTERN(const git_diff_delta *) git_patch_get_delta(const git_patch *patch);
+
+/**
+ * Get the number of hunks in a patch
+ *
+ * @param patch The patch in which to get the number of hunks.
+ * @return The number of hunks of the patch.
+ */
+GIT_EXTERN(size_t) git_patch_num_hunks(const git_patch *patch);
+
+/**
+ * Get line counts of each type in a patch.
+ *
+ * This helps imitate a diff --numstat type of output.  For that purpose,
+ * you only need the `total_additions` and `total_deletions` values, but we
+ * include the `total_context` line count in case you want the total number
+ * of lines of diff output that will be generated.
+ *
+ * All outputs are optional. Pass NULL if you don't need a particular count.
+ *
+ * @param total_context Count of context lines in output, can be NULL.
+ * @param total_additions Count of addition lines in output, can be NULL.
+ * @param total_deletions Count of deletion lines in output, can be NULL.
+ * @param patch The git_patch object
+ * @return 0 on success, <0 on error
+ */
+GIT_EXTERN(int) git_patch_line_stats(
+	size_t *total_context,
+	size_t *total_additions,
+	size_t *total_deletions,
+	const git_patch *patch);
+
+/**
+ * Get the information about a hunk in a patch
+ *
+ * Given a patch and a hunk index into the patch, this returns detailed
+ * information about that hunk.  Any of the output pointers can be passed
+ * as NULL if you don't care about that particular piece of information.
+ *
+ * @param out Output pointer to git_diff_hunk of hunk
+ * @param lines_in_hunk Output count of total lines in this hunk
+ * @param patch Input pointer to patch object
+ * @param hunk_idx Input index of hunk to get information about
+ * @return 0 on success, GIT_ENOTFOUND if hunk_idx out of range, <0 on error
+ */
+GIT_EXTERN(int) git_patch_get_hunk(
+	const git_diff_hunk **out,
+	size_t *lines_in_hunk,
+	git_patch *patch,
+	size_t hunk_idx);
+
+/**
+ * Get the number of lines in a hunk.
+ *
+ * @param patch The git_patch object
+ * @param hunk_idx Index of the hunk
+ * @return Number of lines in hunk or GIT_ENOTFOUND if invalid hunk index
+ */
+GIT_EXTERN(int) git_patch_num_lines_in_hunk(
+	const git_patch *patch,
+	size_t hunk_idx);
+
+/**
+ * Get data about a line in a hunk of a patch.
+ *
+ * Given a patch, a hunk index, and a line index in the hunk, this
+ * will return a lot of details about that line.  If you pass a hunk
+ * index larger than the number of hunks or a line index larger than
+ * the number of lines in the hunk, this will return -1.
+ *
+ * @param out The git_diff_line data for this line
+ * @param patch The patch to look in
+ * @param hunk_idx The index of the hunk
+ * @param line_of_hunk The index of the line in the hunk
+ * @return 0 on success, <0 on failure
+ */
+GIT_EXTERN(int) git_patch_get_line_in_hunk(
+	const git_diff_line **out,
+	git_patch *patch,
+	size_t hunk_idx,
+	size_t line_of_hunk);
+
+/**
+ * Look up size of patch diff data in bytes
+ *
+ * This returns the raw size of the patch data.  This only includes the
+ * actual data from the lines of the diff, not the file or hunk headers.
+ *
+ * If you pass `include_context` as true (non-zero), this will be the size
+ * of all of the diff output; if you pass it as false (zero), this will
+ * only include the actual changed lines (as if `context_lines` was 0).
+ *
+ * @param patch A git_patch representing changes to one file
+ * @param include_context Include context lines in size if non-zero
+ * @param include_hunk_headers Include hunk header lines if non-zero
+ * @param include_file_headers Include file header lines if non-zero
+ * @return The number of bytes of data
+ */
+GIT_EXTERN(size_t) git_patch_size(
+	git_patch *patch,
+	int include_context,
+	int include_hunk_headers,
+	int include_file_headers);
+
+/**
+ * Serialize the patch to text via callback.
+ *
+ * Returning a non-zero value from the callback will terminate the iteration
+ * and return that value to the caller.
+ *
+ * @param patch A git_patch representing changes to one file
+ * @param print_cb Callback function to output lines of the patch.  Will be
+ *                 called for file headers, hunk headers, and diff lines.
+ * @param payload Reference pointer that will be passed to your callbacks.
+ * @return 0 on success, non-zero callback return value, or error code
+ */
+GIT_EXTERN(int) git_patch_print(
+	git_patch *patch,
+	git_diff_line_cb print_cb,
+	void *payload);
+
+/**
+ * Get the content of a patch as a single diff text.
+ *
+ * @param out The git_buf to be filled in
+ * @param patch A git_patch representing changes to one file
+ * @return 0 on success, <0 on failure.
+ */
+GIT_EXTERN(int) git_patch_to_buf(
+	git_buf *out,
+	git_patch *patch);
+
+GIT_END_DECL
+
+/**@}*/
+
+#endif

3rdparty/libgit2/include/git2/pathspec.h

@@ -0,0 +1,280 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_pathspec_h__
+#define INCLUDE_git_pathspec_h__
+
+#include "common.h"
+#include "types.h"
+#include "strarray.h"
+#include "diff.h"
+
+GIT_BEGIN_DECL
+
+/**
+ * Compiled pathspec
+ */
+typedef struct git_pathspec git_pathspec;
+
+/**
+ * List of filenames matching a pathspec
+ */
+typedef struct git_pathspec_match_list git_pathspec_match_list;
+
+/**
+ * Options controlling how pathspec match should be executed
+ */
+typedef enum {
+	GIT_PATHSPEC_DEFAULT        = 0,
+
+	/**
+	 * GIT_PATHSPEC_IGNORE_CASE forces match to ignore case; otherwise
+	 * match will use native case sensitivity of platform filesystem
+	 */
+	GIT_PATHSPEC_IGNORE_CASE    = (1u << 0),
+
+	/**
+	 * GIT_PATHSPEC_USE_CASE forces case sensitive match; otherwise
+	 * match will use native case sensitivity of platform filesystem
+	 */
+	GIT_PATHSPEC_USE_CASE       = (1u << 1),
+
+	/**
+	 * GIT_PATHSPEC_NO_GLOB disables glob patterns and just uses simple
+	 * string comparison for matching
+	 */
+	GIT_PATHSPEC_NO_GLOB        = (1u << 2),
+
+	/**
+	 * GIT_PATHSPEC_NO_MATCH_ERROR means the match functions return error
+	 * code GIT_ENOTFOUND if no matches are found; otherwise no matches is
+	 * still success (return 0) but `git_pathspec_match_list_entrycount`
+	 * will indicate 0 matches.
+	 */
+	GIT_PATHSPEC_NO_MATCH_ERROR = (1u << 3),
+
+	/**
+	 * GIT_PATHSPEC_FIND_FAILURES means that the `git_pathspec_match_list`
+	 * should track which patterns matched which files so that at the end of
+	 * the match we can identify patterns that did not match any files.
+	 */
+	GIT_PATHSPEC_FIND_FAILURES  = (1u << 4),
+
+	/**
+	 * GIT_PATHSPEC_FAILURES_ONLY means that the `git_pathspec_match_list`
+	 * does not need to keep the actual matching filenames.  Use this to
+	 * just test if there were any matches at all or in combination with
+	 * GIT_PATHSPEC_FIND_FAILURES to validate a pathspec.
+	 */
+	GIT_PATHSPEC_FAILURES_ONLY  = (1u << 5)
+} git_pathspec_flag_t;
+
+/**
+ * Compile a pathspec
+ *
+ * @param out Output of the compiled pathspec
+ * @param pathspec A git_strarray of the paths to match
+ * @return 0 on success, <0 on failure
+ */
+GIT_EXTERN(int) git_pathspec_new(
+	git_pathspec **out, const git_strarray *pathspec);
+
+/**
+ * Free a pathspec
+ *
+ * @param ps The compiled pathspec
+ */
+GIT_EXTERN(void) git_pathspec_free(git_pathspec *ps);
+
+/**
+ * Try to match a path against a pathspec
+ *
+ * Unlike most of the other pathspec matching functions, this will not
+ * fall back on the native case-sensitivity for your platform.  You must
+ * explicitly pass flags to control case sensitivity or else this will
+ * fall back on being case sensitive.
+ *
+ * @param ps The compiled pathspec
+ * @param flags Combination of git_pathspec_flag_t options to control match
+ * @param path The pathname to attempt to match
+ * @return 1 is path matches spec, 0 if it does not
+ */
+GIT_EXTERN(int) git_pathspec_matches_path(
+	const git_pathspec *ps, uint32_t flags, const char *path);
+
+/**
+ * Match a pathspec against the working directory of a repository.
+ *
+ * This matches the pathspec against the current files in the working
+ * directory of the repository.  It is an error to invoke this on a bare
+ * repo.  This handles git ignores (i.e. ignored files will not be
+ * considered to match the `pathspec` unless the file is tracked in the
+ * index).
+ *
+ * If `out` is not NULL, this returns a `git_patchspec_match_list`.  That
+ * contains the list of all matched filenames (unless you pass the
+ * `GIT_PATHSPEC_FAILURES_ONLY` flag) and may also contain the list of
+ * pathspecs with no match (if you used the `GIT_PATHSPEC_FIND_FAILURES`
+ * flag).  You must call `git_pathspec_match_list_free()` on this object.
+ *
+ * @param out Output list of matches; pass NULL to just get return value
+ * @param repo The repository in which to match; bare repo is an error
+ * @param flags Combination of git_pathspec_flag_t options to control match
+ * @param ps Pathspec to be matched
+ * @return 0 on success, -1 on error, GIT_ENOTFOUND if no matches and
+ *         the GIT_PATHSPEC_NO_MATCH_ERROR flag was given
+ */
+GIT_EXTERN(int) git_pathspec_match_workdir(
+	git_pathspec_match_list **out,
+	git_repository *repo,
+	uint32_t flags,
+	git_pathspec *ps);
+
+/**
+ * Match a pathspec against entries in an index.
+ *
+ * This matches the pathspec against the files in the repository index.
+ *
+ * NOTE: At the moment, the case sensitivity of this match is controlled
+ * by the current case-sensitivity of the index object itself and the
+ * USE_CASE and IGNORE_CASE flags will have no effect.  This behavior will
+ * be corrected in a future release.
+ *
+ * If `out` is not NULL, this returns a `git_patchspec_match_list`.  That
+ * contains the list of all matched filenames (unless you pass the
+ * `GIT_PATHSPEC_FAILURES_ONLY` flag) and may also contain the list of
+ * pathspecs with no match (if you used the `GIT_PATHSPEC_FIND_FAILURES`
+ * flag).  You must call `git_pathspec_match_list_free()` on this object.
+ *
+ * @param out Output list of matches; pass NULL to just get return value
+ * @param index The index to match against
+ * @param flags Combination of git_pathspec_flag_t options to control match
+ * @param ps Pathspec to be matched
+ * @return 0 on success, -1 on error, GIT_ENOTFOUND if no matches and
+ *         the GIT_PATHSPEC_NO_MATCH_ERROR flag is used
+ */
+GIT_EXTERN(int) git_pathspec_match_index(
+	git_pathspec_match_list **out,
+	git_index *index,
+	uint32_t flags,
+	git_pathspec *ps);
+
+/**
+ * Match a pathspec against files in a tree.
+ *
+ * This matches the pathspec against the files in the given tree.
+ *
+ * If `out` is not NULL, this returns a `git_patchspec_match_list`.  That
+ * contains the list of all matched filenames (unless you pass the
+ * `GIT_PATHSPEC_FAILURES_ONLY` flag) and may also contain the list of
+ * pathspecs with no match (if you used the `GIT_PATHSPEC_FIND_FAILURES`
+ * flag).  You must call `git_pathspec_match_list_free()` on this object.
+ *
+ * @param out Output list of matches; pass NULL to just get return value
+ * @param tree The root-level tree to match against
+ * @param flags Combination of git_pathspec_flag_t options to control match
+ * @param ps Pathspec to be matched
+ * @return 0 on success, -1 on error, GIT_ENOTFOUND if no matches and
+ *         the GIT_PATHSPEC_NO_MATCH_ERROR flag is used
+ */
+GIT_EXTERN(int) git_pathspec_match_tree(
+	git_pathspec_match_list **out,
+	git_tree *tree,
+	uint32_t flags,
+	git_pathspec *ps);
+
+/**
+ * Match a pathspec against files in a diff list.
+ *
+ * This matches the pathspec against the files in the given diff list.
+ *
+ * If `out` is not NULL, this returns a `git_patchspec_match_list`.  That
+ * contains the list of all matched filenames (unless you pass the
+ * `GIT_PATHSPEC_FAILURES_ONLY` flag) and may also contain the list of
+ * pathspecs with no match (if you used the `GIT_PATHSPEC_FIND_FAILURES`
+ * flag).  You must call `git_pathspec_match_list_free()` on this object.
+ *
+ * @param out Output list of matches; pass NULL to just get return value
+ * @param diff A generated diff list
+ * @param flags Combination of git_pathspec_flag_t options to control match
+ * @param ps Pathspec to be matched
+ * @return 0 on success, -1 on error, GIT_ENOTFOUND if no matches and
+ *         the GIT_PATHSPEC_NO_MATCH_ERROR flag is used
+ */
+GIT_EXTERN(int) git_pathspec_match_diff(
+	git_pathspec_match_list **out,
+	git_diff *diff,
+	uint32_t flags,
+	git_pathspec *ps);
+
+/**
+ * Free memory associates with a git_pathspec_match_list
+ *
+ * @param m The git_pathspec_match_list to be freed
+ */
+GIT_EXTERN(void) git_pathspec_match_list_free(git_pathspec_match_list *m);
+
+/**
+ * Get the number of items in a match list.
+ *
+ * @param m The git_pathspec_match_list object
+ * @return Number of items in match list
+ */
+GIT_EXTERN(size_t) git_pathspec_match_list_entrycount(
+	const git_pathspec_match_list *m);
+
+/**
+ * Get a matching filename by position.
+ *
+ * This routine cannot be used if the match list was generated by
+ * `git_pathspec_match_diff`.  If so, it will always return NULL.
+ *
+ * @param m The git_pathspec_match_list object
+ * @param pos The index into the list
+ * @return The filename of the match
+ */
+GIT_EXTERN(const char *) git_pathspec_match_list_entry(
+	const git_pathspec_match_list *m, size_t pos);
+
+/**
+ * Get a matching diff delta by position.
+ *
+ * This routine can only be used if the match list was generated by
+ * `git_pathspec_match_diff`.  Otherwise it will always return NULL.
+ *
+ * @param m The git_pathspec_match_list object
+ * @param pos The index into the list
+ * @return The filename of the match
+ */
+GIT_EXTERN(const git_diff_delta *) git_pathspec_match_list_diff_entry(
+	const git_pathspec_match_list *m, size_t pos);
+
+/**
+ * Get the number of pathspec items that did not match.
+ *
+ * This will be zero unless you passed GIT_PATHSPEC_FIND_FAILURES when
+ * generating the git_pathspec_match_list.
+ *
+ * @param m The git_pathspec_match_list object
+ * @return Number of items in original pathspec that had no matches
+ */
+GIT_EXTERN(size_t) git_pathspec_match_list_failed_entrycount(
+	const git_pathspec_match_list *m);
+
+/**
+ * Get an original pathspec string that had no matches.
+ *
+ * This will be return NULL for positions out of range.
+ *
+ * @param m The git_pathspec_match_list object
+ * @param pos The index into the failed items
+ * @return The pathspec pattern that didn't match anything
+ */
+GIT_EXTERN(const char *) git_pathspec_match_list_failed_entry(
+	const git_pathspec_match_list *m, size_t pos);
+
+GIT_END_DECL
+#endif

3rdparty/libgit2/include/git2/proxy.h

@@ -0,0 +1,98 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_proxy_h__
+#define INCLUDE_git_proxy_h__
+
+#include "common.h"
+
+#include "cert.h"
+#include "credential.h"
+
+GIT_BEGIN_DECL
+
+/**
+ * The type of proxy to use.
+ */
+typedef enum {
+	/**
+	 * Do not attempt to connect through a proxy
+	 *
+	 * If built against libcurl, it itself may attempt to connect
+	 * to a proxy if the environment variables specify it.
+	 */
+	GIT_PROXY_NONE,
+	/**
+	 * Try to auto-detect the proxy from the git configuration.
+	 */
+	GIT_PROXY_AUTO,
+	/**
+	 * Connect via the URL given in the options
+	 */
+	GIT_PROXY_SPECIFIED
+} git_proxy_t;
+
+/**
+ * Options for connecting through a proxy
+ *
+ * Note that not all types may be supported, depending on the platform
+ * and compilation options.
+ */
+typedef struct {
+	unsigned int version;
+
+	/**
+	 * The type of proxy to use, by URL, auto-detect.
+	 */
+	git_proxy_t type;
+
+	/**
+	 * The URL of the proxy.
+	 */
+	const char *url;
+
+	/**
+	 * This will be called if the remote host requires
+	 * authentication in order to connect to it.
+	 *
+	 * Returning GIT_PASSTHROUGH will make libgit2 behave as
+	 * though this field isn't set.
+	 */
+	git_credential_acquire_cb credentials;
+
+	/**
+	 * If cert verification fails, this will be called to let the
+	 * user make the final decision of whether to allow the
+	 * connection to proceed. Returns 0 to allow the connection
+	 * or a negative value to indicate an error.
+	 */
+	git_transport_certificate_check_cb certificate_check;
+
+	/**
+	 * Payload to be provided to the credentials and certificate
+	 * check callbacks.
+	 */
+	void *payload;
+} git_proxy_options;
+
+#define GIT_PROXY_OPTIONS_VERSION 1
+#define GIT_PROXY_OPTIONS_INIT {GIT_PROXY_OPTIONS_VERSION}
+
+/**
+ * Initialize git_proxy_options structure
+ *
+ * Initializes a `git_proxy_options` with default values. Equivalent to
+ * creating an instance with `GIT_PROXY_OPTIONS_INIT`.
+ *
+ * @param opts The `git_proxy_options` struct to initialize.
+ * @param version The struct version; pass `GIT_PROXY_OPTIONS_VERSION`.
+ * @return Zero on success; -1 on failure.
+ */
+GIT_EXTERN(int) git_proxy_options_init(git_proxy_options *opts, unsigned int version);
+
+GIT_END_DECL
+
+#endif

3rdparty/libgit2/include/git2/rebase.h

@@ -0,0 +1,399 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_rebase_h__
+#define INCLUDE_git_rebase_h__
+
+#include "common.h"
+#include "types.h"
+#include "oid.h"
+#include "annotated_commit.h"
+#include "merge.h"
+#include "checkout.h"
+#include "commit.h"
+
+/**
+ * @file git2/rebase.h
+ * @brief Git rebase routines
+ * @defgroup git_rebase Git merge routines
+ * @ingroup Git
+ * @{
+ */
+GIT_BEGIN_DECL
+
+/**
+ * Rebase options
+ *
+ * Use to tell the rebase machinery how to operate.
+ */
+typedef struct {
+	unsigned int version;
+
+	/**
+	 * Used by `git_rebase_init`, this will instruct other clients working
+	 * on this rebase that you want a quiet rebase experience, which they
+	 * may choose to provide in an application-specific manner.  This has no
+	 * effect upon libgit2 directly, but is provided for interoperability
+	 * between Git tools.
+	 */
+	int quiet;
+
+	/**
+	 * Used by `git_rebase_init`, this will begin an in-memory rebase,
+	 * which will allow callers to step through the rebase operations and
+	 * commit the rebased changes, but will not rewind HEAD or update the
+	 * repository to be in a rebasing state.  This will not interfere with
+	 * the working directory (if there is one).
+	 */
+	int inmemory;
+
+	/**
+	 * Used by `git_rebase_finish`, this is the name of the notes reference
+	 * used to rewrite notes for rebased commits when finishing the rebase;
+	 * if NULL, the contents of the configuration option `notes.rewriteRef`
+	 * is examined, unless the configuration option `notes.rewrite.rebase`
+	 * is set to false.  If `notes.rewriteRef` is also NULL, notes will
+	 * not be rewritten.
+	 */
+	const char *rewrite_notes_ref;
+
+	/**
+	 * Options to control how trees are merged during `git_rebase_next`.
+	 */
+	git_merge_options merge_options;
+
+	/**
+	 * Options to control how files are written during `git_rebase_init`,
+	 * `git_rebase_next` and `git_rebase_abort`.  Note that a minimum
+	 * strategy of `GIT_CHECKOUT_SAFE` is defaulted in `init` and `next`,
+	 * and a minimum strategy of `GIT_CHECKOUT_FORCE` is defaulted in
+	 * `abort` to match git semantics.
+	 */
+	git_checkout_options checkout_options;
+
+	/**
+	 * Optional callback that allows users to override commit
+	 * creation in `git_rebase_commit`.  If specified, users can
+	 * create their own commit and provide the commit ID, which
+	 * may be useful for signing commits or otherwise customizing
+	 * the commit creation.
+	 *
+	 * If this callback returns `GIT_PASSTHROUGH`, then
+	 * `git_rebase_commit` will continue to create the commit.
+	 */
+	git_commit_create_cb commit_create_cb;
+
+#ifdef GIT_DEPRECATE_HARD
+	void *reserved;
+#else
+	/**
+	 * If provided, this will be called with the commit content, allowing
+	 * a signature to be added to the rebase commit. Can be skipped with
+	 * GIT_PASSTHROUGH. If GIT_PASSTHROUGH is returned, a commit will be made
+	 * without a signature.
+	 *
+	 * This field is only used when performing git_rebase_commit.
+	 *
+	 * This callback is not invoked if a `git_commit_create_cb` is
+	 * specified.
+	 *
+	 * This callback is deprecated; users should provide a
+	 * creation callback as `commit_create_cb` that produces a
+	 * commit buffer, signs it, and commits it.
+	 */
+	int (*signing_cb)(git_buf *, git_buf *, const char *, void *);
+#endif
+
+	/**
+	 * This will be passed to each of the callbacks in this struct
+	 * as the last parameter.
+	 */
+	void *payload;
+} git_rebase_options;
+
+/**
+ * Type of rebase operation in-progress after calling `git_rebase_next`.
+ */
+typedef enum {
+	/**
+	 * The given commit is to be cherry-picked.  The client should commit
+	 * the changes and continue if there are no conflicts.
+	 */
+	GIT_REBASE_OPERATION_PICK = 0,
+
+	/**
+	 * The given commit is to be cherry-picked, but the client should prompt
+	 * the user to provide an updated commit message.
+	 */
+	GIT_REBASE_OPERATION_REWORD,
+
+	/**
+	 * The given commit is to be cherry-picked, but the client should stop
+	 * to allow the user to edit the changes before committing them.
+	 */
+	GIT_REBASE_OPERATION_EDIT,
+
+	/**
+	 * The given commit is to be squashed into the previous commit.  The
+	 * commit message will be merged with the previous message.
+	 */
+	GIT_REBASE_OPERATION_SQUASH,
+
+	/**
+	 * The given commit is to be squashed into the previous commit.  The
+	 * commit message from this commit will be discarded.
+	 */
+	GIT_REBASE_OPERATION_FIXUP,
+
+	/**
+	 * No commit will be cherry-picked.  The client should run the given
+	 * command and (if successful) continue.
+	 */
+	GIT_REBASE_OPERATION_EXEC
+} git_rebase_operation_t;
+
+#define GIT_REBASE_OPTIONS_VERSION 1
+#define GIT_REBASE_OPTIONS_INIT \
+	{ GIT_REBASE_OPTIONS_VERSION, 0, 0, NULL, GIT_MERGE_OPTIONS_INIT, \
+	  GIT_CHECKOUT_OPTIONS_INIT, NULL, NULL }
+
+/** Indicates that a rebase operation is not (yet) in progress. */
+#define GIT_REBASE_NO_OPERATION SIZE_MAX
+
+/**
+ * A rebase operation
+ *
+ * Describes a single instruction/operation to be performed during the
+ * rebase.
+ */
+typedef struct {
+	/** The type of rebase operation. */
+	git_rebase_operation_t type;
+
+	/**
+	 * The commit ID being cherry-picked.  This will be populated for
+	 * all operations except those of type `GIT_REBASE_OPERATION_EXEC`.
+	 */
+	const git_oid id;
+
+	/**
+	 * The executable the user has requested be run.  This will only
+	 * be populated for operations of type `GIT_REBASE_OPERATION_EXEC`.
+	 */
+	const char *exec;
+} git_rebase_operation;
+
+/**
+ * Initialize git_rebase_options structure
+ *
+ * Initializes a `git_rebase_options` with default values. Equivalent to
+ * creating an instance with `GIT_REBASE_OPTIONS_INIT`.
+ *
+ * @param opts The `git_rebase_options` struct to initialize.
+ * @param version The struct version; pass `GIT_REBASE_OPTIONS_VERSION`.
+ * @return Zero on success; -1 on failure.
+ */
+GIT_EXTERN(int) git_rebase_options_init(
+	git_rebase_options *opts,
+	unsigned int version);
+
+/**
+ * Initializes a rebase operation to rebase the changes in `branch`
+ * relative to `upstream` onto another branch.  To begin the rebase
+ * process, call `git_rebase_next`.  When you have finished with this
+ * object, call `git_rebase_free`.
+ *
+ * @param out Pointer to store the rebase object
+ * @param repo The repository to perform the rebase
+ * @param branch The terminal commit to rebase, or NULL to rebase the
+ *               current branch
+ * @param upstream The commit to begin rebasing from, or NULL to rebase all
+ *                 reachable commits
+ * @param onto The branch to rebase onto, or NULL to rebase onto the given
+ *             upstream
+ * @param opts Options to specify how rebase is performed, or NULL
+ * @return Zero on success; -1 on failure.
+ */
+GIT_EXTERN(int) git_rebase_init(
+	git_rebase **out,
+	git_repository *repo,
+	const git_annotated_commit *branch,
+	const git_annotated_commit *upstream,
+	const git_annotated_commit *onto,
+	const git_rebase_options *opts);
+
+/**
+ * Opens an existing rebase that was previously started by either an
+ * invocation of `git_rebase_init` or by another client.
+ *
+ * @param out Pointer to store the rebase object
+ * @param repo The repository that has a rebase in-progress
+ * @param opts Options to specify how rebase is performed
+ * @return Zero on success; -1 on failure.
+ */
+GIT_EXTERN(int) git_rebase_open(
+	git_rebase **out,
+	git_repository *repo,
+	const git_rebase_options *opts);
+
+/**
+ * Gets the original `HEAD` ref name for merge rebases.
+ *
+ * @param rebase The in-progress rebase.
+ * @return The original `HEAD` ref name
+ */
+GIT_EXTERN(const char *) git_rebase_orig_head_name(git_rebase *rebase);
+
+/**
+ * Gets the original `HEAD` id for merge rebases.
+ *
+ * @param rebase The in-progress rebase.
+ * @return The original `HEAD` id
+ */
+GIT_EXTERN(const git_oid *) git_rebase_orig_head_id(git_rebase *rebase);
+
+/**
+ * Gets the `onto` ref name for merge rebases.
+ *
+ * @param rebase The in-progress rebase.
+ * @return The `onto` ref name
+ */
+GIT_EXTERN(const char *) git_rebase_onto_name(git_rebase *rebase);
+
+/**
+ * Gets the `onto` id for merge rebases.
+ *
+ * @param rebase The in-progress rebase.
+ * @return The `onto` id
+ */
+GIT_EXTERN(const git_oid *) git_rebase_onto_id(git_rebase *rebase);
+
+/**
+ * Gets the count of rebase operations that are to be applied.
+ *
+ * @param rebase The in-progress rebase
+ * @return The number of rebase operations in total
+ */
+GIT_EXTERN(size_t) git_rebase_operation_entrycount(git_rebase *rebase);
+
+/**
+ * Gets the index of the rebase operation that is currently being applied.
+ * If the first operation has not yet been applied (because you have
+ * called `init` but not yet `next`) then this returns
+ * `GIT_REBASE_NO_OPERATION`.
+ *
+ * @param rebase The in-progress rebase
+ * @return The index of the rebase operation currently being applied.
+ */
+GIT_EXTERN(size_t) git_rebase_operation_current(git_rebase *rebase);
+
+/**
+ * Gets the rebase operation specified by the given index.
+ *
+ * @param rebase The in-progress rebase
+ * @param idx The index of the rebase operation to retrieve
+ * @return The rebase operation or NULL if `idx` was out of bounds
+ */
+GIT_EXTERN(git_rebase_operation *) git_rebase_operation_byindex(
+	git_rebase *rebase,
+	size_t idx);
+
+/**
+ * Performs the next rebase operation and returns the information about it.
+ * If the operation is one that applies a patch (which is any operation except
+ * GIT_REBASE_OPERATION_EXEC) then the patch will be applied and the index and
+ * working directory will be updated with the changes.  If there are conflicts,
+ * you will need to address those before committing the changes.
+ *
+ * @param operation Pointer to store the rebase operation that is to be performed next
+ * @param rebase The rebase in progress
+ * @return Zero on success; -1 on failure.
+ */
+GIT_EXTERN(int) git_rebase_next(
+	git_rebase_operation **operation,
+	git_rebase *rebase);
+
+/**
+ * Gets the index produced by the last operation, which is the result
+ * of `git_rebase_next` and which will be committed by the next
+ * invocation of `git_rebase_commit`.  This is useful for resolving
+ * conflicts in an in-memory rebase before committing them.  You must
+ * call `git_index_free` when you are finished with this.
+ *
+ * This is only applicable for in-memory rebases; for rebases within
+ * a working directory, the changes were applied to the repository's
+ * index.
+ *
+ * @param index The result index of the last operation.
+ * @param rebase The in-progress rebase.
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_rebase_inmemory_index(
+	git_index **index,
+	git_rebase *rebase);
+
+/**
+ * Commits the current patch.  You must have resolved any conflicts that
+ * were introduced during the patch application from the `git_rebase_next`
+ * invocation.
+ *
+ * @param id Pointer in which to store the OID of the newly created commit
+ * @param rebase The rebase that is in-progress
+ * @param author The author of the updated commit, or NULL to keep the
+ *        author from the original commit
+ * @param committer The committer of the rebase
+ * @param message_encoding The encoding for the message in the commit,
+ *        represented with a standard encoding name.  If message is NULL,
+ *        this should also be NULL, and the encoding from the original
+ *        commit will be maintained.  If message is specified, this may be
+ *        NULL to indicate that "UTF-8" is to be used.
+ * @param message The message for this commit, or NULL to use the message
+ *        from the original commit.
+ * @return Zero on success, GIT_EUNMERGED if there are unmerged changes in
+ *        the index, GIT_EAPPLIED if the current commit has already
+ *        been applied to the upstream and there is nothing to commit,
+ *        -1 on failure.
+ */
+GIT_EXTERN(int) git_rebase_commit(
+	git_oid *id,
+	git_rebase *rebase,
+	const git_signature *author,
+	const git_signature *committer,
+	const char *message_encoding,
+	const char *message);
+
+/**
+ * Aborts a rebase that is currently in progress, resetting the repository
+ * and working directory to their state before rebase began.
+ *
+ * @param rebase The rebase that is in-progress
+ * @return Zero on success; GIT_ENOTFOUND if a rebase is not in progress,
+ *         -1 on other errors.
+ */
+GIT_EXTERN(int) git_rebase_abort(git_rebase *rebase);
+
+/**
+ * Finishes a rebase that is currently in progress once all patches have
+ * been applied.
+ *
+ * @param rebase The rebase that is in-progress
+ * @param signature The identity that is finishing the rebase (optional)
+ * @return Zero on success; -1 on error
+ */
+GIT_EXTERN(int) git_rebase_finish(
+	git_rebase *rebase,
+	const git_signature *signature);
+
+/**
+ * Frees the `git_rebase` object.
+ *
+ * @param rebase The rebase object
+ */
+GIT_EXTERN(void) git_rebase_free(git_rebase *rebase);
+
+/** @} */
+GIT_END_DECL
+#endif

3rdparty/libgit2/include/git2/refdb.h

@@ -0,0 +1,71 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_refdb_h__
+#define INCLUDE_git_refdb_h__
+
+#include "common.h"
+#include "types.h"
+#include "oid.h"
+#include "refs.h"
+
+/**
+ * @file git2/refdb.h
+ * @brief Git custom refs backend functions
+ * @defgroup git_refdb Git custom refs backend API
+ * @ingroup Git
+ * @{
+ */
+GIT_BEGIN_DECL
+
+/**
+ * Create a new reference database with no backends.
+ *
+ * Before the Ref DB can be used for read/writing, a custom database
+ * backend must be manually set using `git_refdb_set_backend()`
+ *
+ * @param out location to store the database pointer, if opened.
+ *			Set to NULL if the open failed.
+ * @param repo the repository
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_refdb_new(git_refdb **out, git_repository *repo);
+
+/**
+ * Create a new reference database and automatically add
+ * the default backends:
+ *
+ *  - git_refdb_dir: read and write loose and packed refs
+ *      from disk, assuming the repository dir as the folder
+ *
+ * @param out location to store the database pointer, if opened.
+ *			Set to NULL if the open failed.
+ * @param repo the repository
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_refdb_open(git_refdb **out, git_repository *repo);
+
+/**
+ * Suggests that the given refdb compress or optimize its references.
+ * This mechanism is implementation specific.  For on-disk reference
+ * databases, for example, this may pack all loose references.
+ *
+ * @param refdb The reference database to optimize.
+ * @return 0 or an error code.
+ */
+GIT_EXTERN(int) git_refdb_compress(git_refdb *refdb);
+
+/**
+ * Close an open reference database.
+ *
+ * @param refdb reference database pointer or NULL
+ */
+GIT_EXTERN(void) git_refdb_free(git_refdb *refdb);
+
+/** @} */
+GIT_END_DECL
+
+#endif

3rdparty/libgit2/include/git2/reflog.h

@@ -0,0 +1,170 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_reflog_h__
+#define INCLUDE_git_reflog_h__
+
+#include "common.h"
+#include "types.h"
+#include "oid.h"
+
+/**
+ * @file git2/reflog.h
+ * @brief Git reflog management routines
+ * @defgroup git_reflog Git reflog management routines
+ * @ingroup Git
+ * @{
+ */
+GIT_BEGIN_DECL
+
+/**
+ * Read the reflog for the given reference
+ *
+ * If there is no reflog file for the given
+ * reference yet, an empty reflog object will
+ * be returned.
+ *
+ * The reflog must be freed manually by using
+ * git_reflog_free().
+ *
+ * @param out pointer to reflog
+ * @param repo the repository
+ * @param name reference to look up
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_reflog_read(git_reflog **out, git_repository *repo,  const char *name);
+
+/**
+ * Write an existing in-memory reflog object back to disk
+ * using an atomic file lock.
+ *
+ * @param reflog an existing reflog object
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_reflog_write(git_reflog *reflog);
+
+/**
+ * Add a new entry to the in-memory reflog.
+ *
+ * `msg` is optional and can be NULL.
+ *
+ * @param reflog an existing reflog object
+ * @param id the OID the reference is now pointing to
+ * @param committer the signature of the committer
+ * @param msg the reflog message
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_reflog_append(git_reflog *reflog, const git_oid *id, const git_signature *committer, const char *msg);
+
+/**
+ * Rename a reflog
+ *
+ * The reflog to be renamed is expected to already exist
+ *
+ * The new name will be checked for validity.
+ * See `git_reference_create_symbolic()` for rules about valid names.
+ *
+ * @param repo the repository
+ * @param old_name the old name of the reference
+ * @param name the new name of the reference
+ * @return 0 on success, GIT_EINVALIDSPEC or an error code
+ */
+GIT_EXTERN(int) git_reflog_rename(git_repository *repo, const char *old_name, const char *name);
+
+/**
+ * Delete the reflog for the given reference
+ *
+ * @param repo the repository
+ * @param name the reflog to delete
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_reflog_delete(git_repository *repo, const char *name);
+
+/**
+ * Get the number of log entries in a reflog
+ *
+ * @param reflog the previously loaded reflog
+ * @return the number of log entries
+ */
+GIT_EXTERN(size_t) git_reflog_entrycount(git_reflog *reflog);
+
+/**
+ * Lookup an entry by its index
+ *
+ * Requesting the reflog entry with an index of 0 (zero) will
+ * return the most recently created entry.
+ *
+ * @param reflog a previously loaded reflog
+ * @param idx the position of the entry to lookup. Should be greater than or
+ * equal to 0 (zero) and less than `git_reflog_entrycount()`.
+ * @return the entry; NULL if not found
+ */
+GIT_EXTERN(const git_reflog_entry *) git_reflog_entry_byindex(const git_reflog *reflog, size_t idx);
+
+/**
+ * Remove an entry from the reflog by its index
+ *
+ * To ensure there's no gap in the log history, set `rewrite_previous_entry`
+ * param value to 1. When deleting entry `n`, member old_oid of entry `n-1`
+ * (if any) will be updated with the value of member new_oid of entry `n+1`.
+ *
+ * @param reflog a previously loaded reflog.
+ *
+ * @param idx the position of the entry to remove. Should be greater than or
+ * equal to 0 (zero) and less than `git_reflog_entrycount()`.
+ *
+ * @param rewrite_previous_entry 1 to rewrite the history; 0 otherwise.
+ *
+ * @return 0 on success, GIT_ENOTFOUND if the entry doesn't exist
+ * or an error code.
+ */
+GIT_EXTERN(int) git_reflog_drop(
+	git_reflog *reflog,
+	size_t idx,
+	int rewrite_previous_entry);
+
+/**
+ * Get the old oid
+ *
+ * @param entry a reflog entry
+ * @return the old oid
+ */
+GIT_EXTERN(const git_oid *) git_reflog_entry_id_old(const git_reflog_entry *entry);
+
+/**
+ * Get the new oid
+ *
+ * @param entry a reflog entry
+ * @return the new oid at this time
+ */
+GIT_EXTERN(const git_oid *) git_reflog_entry_id_new(const git_reflog_entry *entry);
+
+/**
+ * Get the committer of this entry
+ *
+ * @param entry a reflog entry
+ * @return the committer
+ */
+GIT_EXTERN(const git_signature *) git_reflog_entry_committer(const git_reflog_entry *entry);
+
+/**
+ * Get the log message
+ *
+ * @param entry a reflog entry
+ * @return the log msg
+ */
+GIT_EXTERN(const char *) git_reflog_entry_message(const git_reflog_entry *entry);
+
+/**
+ * Free the reflog
+ *
+ * @param reflog reflog to free
+ */
+GIT_EXTERN(void) git_reflog_free(git_reflog *reflog);
+
+/** @} */
+GIT_END_DECL
+#endif

3rdparty/libgit2/include/git2/refs.h

@@ -0,0 +1,771 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_refs_h__
+#define INCLUDE_git_refs_h__
+
+#include "common.h"
+#include "types.h"
+#include "oid.h"
+#include "strarray.h"
+
+/**
+ * @file git2/refs.h
+ * @brief Git reference management routines
+ * @defgroup git_reference Git reference management routines
+ * @ingroup Git
+ * @{
+ */
+GIT_BEGIN_DECL
+
+/**
+ * Lookup a reference by name in a repository.
+ *
+ * The returned reference must be freed by the user.
+ *
+ * The name will be checked for validity.
+ * See `git_reference_symbolic_create()` for rules about valid names.
+ *
+ * @param out pointer to the looked-up reference
+ * @param repo the repository to look up the reference
+ * @param name the long name for the reference (e.g. HEAD, refs/heads/master, refs/tags/v0.1.0, ...)
+ * @return 0 on success, GIT_ENOTFOUND, GIT_EINVALIDSPEC or an error code.
+ */
+GIT_EXTERN(int) git_reference_lookup(git_reference **out, git_repository *repo, const char *name);
+
+/**
+ * Lookup a reference by name and resolve immediately to OID.
+ *
+ * This function provides a quick way to resolve a reference name straight
+ * through to the object id that it refers to.  This avoids having to
+ * allocate or free any `git_reference` objects for simple situations.
+ *
+ * The name will be checked for validity.
+ * See `git_reference_symbolic_create()` for rules about valid names.
+ *
+ * @param out Pointer to oid to be filled in
+ * @param repo The repository in which to look up the reference
+ * @param name The long name for the reference (e.g. HEAD, refs/heads/master, refs/tags/v0.1.0, ...)
+ * @return 0 on success, GIT_ENOTFOUND, GIT_EINVALIDSPEC or an error code.
+ */
+GIT_EXTERN(int) git_reference_name_to_id(
+	git_oid *out, git_repository *repo, const char *name);
+
+/**
+ * Lookup a reference by DWIMing its short name
+ *
+ * Apply the git precedence rules to the given shorthand to determine
+ * which reference the user is referring to.
+ *
+ * @param out pointer in which to store the reference
+ * @param repo the repository in which to look
+ * @param shorthand the short name for the reference
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_reference_dwim(git_reference **out, git_repository *repo, const char *shorthand);
+
+/**
+ * Conditionally create a new symbolic reference.
+ *
+ * A symbolic reference is a reference name that refers to another
+ * reference name.  If the other name moves, the symbolic name will move,
+ * too.  As a simple example, the "HEAD" reference might refer to
+ * "refs/heads/master" while on the "master" branch of a repository.
+ *
+ * The symbolic reference will be created in the repository and written to
+ * the disk.  The generated reference object must be freed by the user.
+ *
+ * Valid reference names must follow one of two patterns:
+ *
+ * 1. Top-level names must contain only capital letters and underscores,
+ *    and must begin and end with a letter. (e.g. "HEAD", "ORIG_HEAD").
+ * 2. Names prefixed with "refs/" can be almost anything.  You must avoid
+ *    the characters '~', '^', ':', '\\', '?', '[', and '*', and the
+ *    sequences ".." and "@{" which have special meaning to revparse.
+ *
+ * This function will return an error if a reference already exists with the
+ * given name unless `force` is true, in which case it will be overwritten.
+ *
+ * The message for the reflog will be ignored if the reference does
+ * not belong in the standard set (HEAD, branches and remote-tracking
+ * branches) and it does not have a reflog.
+ *
+ * It will return GIT_EMODIFIED if the reference's value at the time
+ * of updating does not match the one passed through `current_value`
+ * (i.e. if the ref has changed since the user read it).
+ *
+ * If `current_value` is all zeros, this function will return GIT_EMODIFIED
+ * if the ref already exists.
+ *
+ * @param out Pointer to the newly created reference
+ * @param repo Repository where that reference will live
+ * @param name The name of the reference
+ * @param target The target of the reference
+ * @param force Overwrite existing references
+ * @param current_value The expected value of the reference when updating
+ * @param log_message The one line long message to be appended to the reflog
+ * @return 0 on success, GIT_EEXISTS, GIT_EINVALIDSPEC, GIT_EMODIFIED or an error code
+ */
+GIT_EXTERN(int) git_reference_symbolic_create_matching(git_reference **out, git_repository *repo, const char *name, const char *target, int force, const char *current_value, const char *log_message);
+
+/**
+ * Create a new symbolic reference.
+ *
+ * A symbolic reference is a reference name that refers to another
+ * reference name.  If the other name moves, the symbolic name will move,
+ * too.  As a simple example, the "HEAD" reference might refer to
+ * "refs/heads/master" while on the "master" branch of a repository.
+ *
+ * The symbolic reference will be created in the repository and written to
+ * the disk.  The generated reference object must be freed by the user.
+ *
+ * Valid reference names must follow one of two patterns:
+ *
+ * 1. Top-level names must contain only capital letters and underscores,
+ *    and must begin and end with a letter. (e.g. "HEAD", "ORIG_HEAD").
+ * 2. Names prefixed with "refs/" can be almost anything.  You must avoid
+ *    the characters '~', '^', ':', '\\', '?', '[', and '*', and the
+ *    sequences ".." and "@{" which have special meaning to revparse.
+ *
+ * This function will return an error if a reference already exists with the
+ * given name unless `force` is true, in which case it will be overwritten.
+ *
+ * The message for the reflog will be ignored if the reference does
+ * not belong in the standard set (HEAD, branches and remote-tracking
+ * branches) and it does not have a reflog.
+ *
+ * @param out Pointer to the newly created reference
+ * @param repo Repository where that reference will live
+ * @param name The name of the reference
+ * @param target The target of the reference
+ * @param force Overwrite existing references
+ * @param log_message The one line long message to be appended to the reflog
+ * @return 0 on success, GIT_EEXISTS, GIT_EINVALIDSPEC or an error code
+ */
+GIT_EXTERN(int) git_reference_symbolic_create(git_reference **out, git_repository *repo, const char *name, const char *target, int force, const char *log_message);
+
+/**
+ * Create a new direct reference.
+ *
+ * A direct reference (also called an object id reference) refers directly
+ * to a specific object id (a.k.a. OID or SHA) in the repository.  The id
+ * permanently refers to the object (although the reference itself can be
+ * moved).  For example, in libgit2 the direct ref "refs/tags/v0.17.0"
+ * refers to OID 5b9fac39d8a76b9139667c26a63e6b3f204b3977.
+ *
+ * The direct reference will be created in the repository and written to
+ * the disk.  The generated reference object must be freed by the user.
+ *
+ * Valid reference names must follow one of two patterns:
+ *
+ * 1. Top-level names must contain only capital letters and underscores,
+ *    and must begin and end with a letter. (e.g. "HEAD", "ORIG_HEAD").
+ * 2. Names prefixed with "refs/" can be almost anything.  You must avoid
+ *    the characters '~', '^', ':', '\\', '?', '[', and '*', and the
+ *    sequences ".." and "@{" which have special meaning to revparse.
+ *
+ * This function will return an error if a reference already exists with the
+ * given name unless `force` is true, in which case it will be overwritten.
+ *
+ * The message for the reflog will be ignored if the reference does
+ * not belong in the standard set (HEAD, branches and remote-tracking
+ * branches) and it does not have a reflog.
+ *
+ * @param out Pointer to the newly created reference
+ * @param repo Repository where that reference will live
+ * @param name The name of the reference
+ * @param id The object id pointed to by the reference.
+ * @param force Overwrite existing references
+ * @param log_message The one line long message to be appended to the reflog
+ * @return 0 on success, GIT_EEXISTS, GIT_EINVALIDSPEC or an error code
+ */
+GIT_EXTERN(int) git_reference_create(git_reference **out, git_repository *repo, const char *name, const git_oid *id, int force, const char *log_message);
+
+/**
+ * Conditionally create new direct reference
+ *
+ * A direct reference (also called an object id reference) refers directly
+ * to a specific object id (a.k.a. OID or SHA) in the repository.  The id
+ * permanently refers to the object (although the reference itself can be
+ * moved).  For example, in libgit2 the direct ref "refs/tags/v0.17.0"
+ * refers to OID 5b9fac39d8a76b9139667c26a63e6b3f204b3977.
+ *
+ * The direct reference will be created in the repository and written to
+ * the disk.  The generated reference object must be freed by the user.
+ *
+ * Valid reference names must follow one of two patterns:
+ *
+ * 1. Top-level names must contain only capital letters and underscores,
+ *    and must begin and end with a letter. (e.g. "HEAD", "ORIG_HEAD").
+ * 2. Names prefixed with "refs/" can be almost anything.  You must avoid
+ *    the characters '~', '^', ':', '\\', '?', '[', and '*', and the
+ *    sequences ".." and "@{" which have special meaning to revparse.
+ *
+ * This function will return an error if a reference already exists with the
+ * given name unless `force` is true, in which case it will be overwritten.
+ *
+ * The message for the reflog will be ignored if the reference does
+ * not belong in the standard set (HEAD, branches and remote-tracking
+ * branches) and it does not have a reflog.
+ *
+ * It will return GIT_EMODIFIED if the reference's value at the time
+ * of updating does not match the one passed through `current_id`
+ * (i.e. if the ref has changed since the user read it).
+ *
+ * @param out Pointer to the newly created reference
+ * @param repo Repository where that reference will live
+ * @param name The name of the reference
+ * @param id The object id pointed to by the reference.
+ * @param force Overwrite existing references
+ * @param current_id The expected value of the reference at the time of update
+ * @param log_message The one line long message to be appended to the reflog
+ * @return 0 on success, GIT_EMODIFIED if the value of the reference
+ * has changed, GIT_EEXISTS, GIT_EINVALIDSPEC or an error code
+ */
+GIT_EXTERN(int) git_reference_create_matching(git_reference **out, git_repository *repo, const char *name, const git_oid *id, int force, const git_oid *current_id, const char *log_message);
+
+/**
+ * Get the OID pointed to by a direct reference.
+ *
+ * Only available if the reference is direct (i.e. an object id reference,
+ * not a symbolic one).
+ *
+ * To find the OID of a symbolic ref, call `git_reference_resolve()` and
+ * then this function (or maybe use `git_reference_name_to_id()` to
+ * directly resolve a reference name all the way through to an OID).
+ *
+ * @param ref The reference
+ * @return a pointer to the oid if available, NULL otherwise
+ */
+GIT_EXTERN(const git_oid *) git_reference_target(const git_reference *ref);
+
+/**
+ * Return the peeled OID target of this reference.
+ *
+ * This peeled OID only applies to direct references that point to
+ * a hard Tag object: it is the result of peeling such Tag.
+ *
+ * @param ref The reference
+ * @return a pointer to the oid if available, NULL otherwise
+ */
+GIT_EXTERN(const git_oid *) git_reference_target_peel(const git_reference *ref);
+
+/**
+ * Get full name to the reference pointed to by a symbolic reference.
+ *
+ * Only available if the reference is symbolic.
+ *
+ * @param ref The reference
+ * @return a pointer to the name if available, NULL otherwise
+ */
+GIT_EXTERN(const char *) git_reference_symbolic_target(const git_reference *ref);
+
+/**
+ * Get the type of a reference.
+ *
+ * Either direct (GIT_REFERENCE_DIRECT) or symbolic (GIT_REFERENCE_SYMBOLIC)
+ *
+ * @param ref The reference
+ * @return the type
+ */
+GIT_EXTERN(git_reference_t) git_reference_type(const git_reference *ref);
+
+/**
+ * Get the full name of a reference.
+ *
+ * See `git_reference_symbolic_create()` for rules about valid names.
+ *
+ * @param ref The reference
+ * @return the full name for the ref
+ */
+GIT_EXTERN(const char *) git_reference_name(const git_reference *ref);
+
+/**
+ * Resolve a symbolic reference to a direct reference.
+ *
+ * This method iteratively peels a symbolic reference until it resolves to
+ * a direct reference to an OID.
+ *
+ * The peeled reference is returned in the `resolved_ref` argument, and
+ * must be freed manually once it's no longer needed.
+ *
+ * If a direct reference is passed as an argument, a copy of that
+ * reference is returned. This copy must be manually freed too.
+ *
+ * @param out Pointer to the peeled reference
+ * @param ref The reference
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_reference_resolve(git_reference **out, const git_reference *ref);
+
+/**
+ * Get the repository where a reference resides.
+ *
+ * @param ref The reference
+ * @return a pointer to the repo
+ */
+GIT_EXTERN(git_repository *) git_reference_owner(const git_reference *ref);
+
+/**
+ * Create a new reference with the same name as the given reference but a
+ * different symbolic target. The reference must be a symbolic reference,
+ * otherwise this will fail.
+ *
+ * The new reference will be written to disk, overwriting the given reference.
+ *
+ * The target name will be checked for validity.
+ * See `git_reference_symbolic_create()` for rules about valid names.
+ *
+ * The message for the reflog will be ignored if the reference does
+ * not belong in the standard set (HEAD, branches and remote-tracking
+ * branches) and it does not have a reflog.
+ *
+ * @param out Pointer to the newly created reference
+ * @param ref The reference
+ * @param target The new target for the reference
+ * @param log_message The one line long message to be appended to the reflog
+ * @return 0 on success, GIT_EINVALIDSPEC or an error code
+ */
+GIT_EXTERN(int) git_reference_symbolic_set_target(
+	git_reference **out,
+	git_reference *ref,
+	const char *target,
+	const char *log_message);
+
+/**
+ * Conditionally create a new reference with the same name as the given reference but a
+ * different OID target. The reference must be a direct reference, otherwise
+ * this will fail.
+ *
+ * The new reference will be written to disk, overwriting the given reference.
+ *
+ * @param out Pointer to the newly created reference
+ * @param ref The reference
+ * @param id The new target OID for the reference
+ * @param log_message The one line long message to be appended to the reflog
+ * @return 0 on success, GIT_EMODIFIED if the value of the reference
+ * has changed since it was read, or an error code
+ */
+GIT_EXTERN(int) git_reference_set_target(
+	git_reference **out,
+	git_reference *ref,
+	const git_oid *id,
+	const char *log_message);
+
+/**
+ * Rename an existing reference.
+ *
+ * This method works for both direct and symbolic references.
+ *
+ * The new name will be checked for validity.
+ * See `git_reference_symbolic_create()` for rules about valid names.
+ *
+ * If the `force` flag is not enabled, and there's already
+ * a reference with the given name, the renaming will fail.
+ *
+ * IMPORTANT:
+ * The user needs to write a proper reflog entry if the
+ * reflog is enabled for the repository. We only rename
+ * the reflog if it exists.
+ *
+ * @param ref The reference to rename
+ * @param new_name The new name for the reference
+ * @param force Overwrite an existing reference
+ * @param log_message The one line long message to be appended to the reflog
+ * @return 0 on success, GIT_EINVALIDSPEC, GIT_EEXISTS or an error code
+ *
+ */
+GIT_EXTERN(int) git_reference_rename(
+	git_reference **new_ref,
+	git_reference *ref,
+	const char *new_name,
+	int force,
+	const char *log_message);
+
+/**
+ * Delete an existing reference.
+ *
+ * This method works for both direct and symbolic references.  The reference
+ * will be immediately removed on disk but the memory will not be freed.
+ * Callers must call `git_reference_free`.
+ *
+ * This function will return an error if the reference has changed
+ * from the time it was looked up.
+ *
+ * @param ref The reference to remove
+ * @return 0, GIT_EMODIFIED or an error code
+ */
+GIT_EXTERN(int) git_reference_delete(git_reference *ref);
+
+/**
+ * Delete an existing reference by name
+ *
+ * This method removes the named reference from the repository without
+ * looking at its old value.
+ *
+ * @param name The reference to remove
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_reference_remove(git_repository *repo, const char *name);
+
+/**
+ * Fill a list with all the references that can be found in a repository.
+ *
+ * The string array will be filled with the names of all references; these
+ * values are owned by the user and should be free'd manually when no
+ * longer needed, using `git_strarray_free()`.
+ *
+ * @param array Pointer to a git_strarray structure where
+ *		the reference names will be stored
+ * @param repo Repository where to find the refs
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_reference_list(git_strarray *array, git_repository *repo);
+
+/**
+ * Callback used to iterate over references
+ *
+ * @see git_reference_foreach
+ *
+ * @param reference The reference object
+ * @param payload Payload passed to git_reference_foreach
+ * @return non-zero to terminate the iteration
+ */
+typedef int GIT_CALLBACK(git_reference_foreach_cb)(git_reference *reference, void *payload);
+
+/**
+ * Callback used to iterate over reference names
+ *
+ * @see git_reference_foreach_name
+ *
+ * @param name The reference name
+ * @param payload Payload passed to git_reference_foreach_name
+ * @return non-zero to terminate the iteration
+ */
+typedef int GIT_CALLBACK(git_reference_foreach_name_cb)(const char *name, void *payload);
+
+/**
+ * Perform a callback on each reference in the repository.
+ *
+ * The `callback` function will be called for each reference in the
+ * repository, receiving the reference object and the `payload` value
+ * passed to this method.  Returning a non-zero value from the callback
+ * will terminate the iteration.
+ *
+ * Note that the callback function is responsible to call `git_reference_free`
+ * on each reference passed to it.
+ *
+ * @param repo Repository where to find the refs
+ * @param callback Function which will be called for every listed ref
+ * @param payload Additional data to pass to the callback
+ * @return 0 on success, non-zero callback return value, or error code
+ */
+GIT_EXTERN(int) git_reference_foreach(
+	git_repository *repo,
+	git_reference_foreach_cb callback,
+	void *payload);
+
+/**
+ * Perform a callback on the fully-qualified name of each reference.
+ *
+ * The `callback` function will be called for each reference in the
+ * repository, receiving the name of the reference and the `payload` value
+ * passed to this method.  Returning a non-zero value from the callback
+ * will terminate the iteration.
+ *
+ * @param repo Repository where to find the refs
+ * @param callback Function which will be called for every listed ref name
+ * @param payload Additional data to pass to the callback
+ * @return 0 on success, non-zero callback return value, or error code
+ */
+GIT_EXTERN(int) git_reference_foreach_name(
+	git_repository *repo,
+	git_reference_foreach_name_cb callback,
+	void *payload);
+
+/**
+ * Create a copy of an existing reference.
+ *
+ * Call `git_reference_free` to free the data.
+ *
+ * @param dest pointer where to store the copy
+ * @param source object to copy
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_reference_dup(git_reference **dest, git_reference *source);
+
+/**
+ * Free the given reference.
+ *
+ * @param ref git_reference
+ */
+GIT_EXTERN(void) git_reference_free(git_reference *ref);
+
+/**
+ * Compare two references.
+ *
+ * @param ref1 The first git_reference
+ * @param ref2 The second git_reference
+ * @return 0 if the same, else a stable but meaningless ordering.
+ */
+GIT_EXTERN(int) git_reference_cmp(
+	const git_reference *ref1,
+	const git_reference *ref2);
+
+/**
+ * Create an iterator for the repo's references
+ *
+ * @param out pointer in which to store the iterator
+ * @param repo the repository
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_reference_iterator_new(
+	git_reference_iterator **out,
+	git_repository *repo);
+
+/**
+ * Create an iterator for the repo's references that match the
+ * specified glob
+ *
+ * @param out pointer in which to store the iterator
+ * @param repo the repository
+ * @param glob the glob to match against the reference names
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_reference_iterator_glob_new(
+	git_reference_iterator **out,
+	git_repository *repo,
+	const char *glob);
+
+/**
+ * Get the next reference
+ *
+ * @param out pointer in which to store the reference
+ * @param iter the iterator
+ * @return 0, GIT_ITEROVER if there are no more; or an error code
+ */
+GIT_EXTERN(int) git_reference_next(git_reference **out, git_reference_iterator *iter);
+
+/**
+ * Get the next reference's name
+ *
+ * This function is provided for convenience in case only the names
+ * are interesting as it avoids the allocation of the `git_reference`
+ * object which `git_reference_next()` needs.
+ *
+ * @param out pointer in which to store the string
+ * @param iter the iterator
+ * @return 0, GIT_ITEROVER if there are no more; or an error code
+ */
+GIT_EXTERN(int) git_reference_next_name(const char **out, git_reference_iterator *iter);
+
+/**
+ * Free the iterator and its associated resources
+ *
+ * @param iter the iterator to free
+ */
+GIT_EXTERN(void) git_reference_iterator_free(git_reference_iterator *iter);
+
+/**
+ * Perform a callback on each reference in the repository whose name
+ * matches the given pattern.
+ *
+ * This function acts like `git_reference_foreach()` with an additional
+ * pattern match being applied to the reference name before issuing the
+ * callback function.  See that function for more information.
+ *
+ * The pattern is matched using fnmatch or "glob" style where a '*' matches
+ * any sequence of letters, a '?' matches any letter, and square brackets
+ * can be used to define character ranges (such as "[0-9]" for digits).
+ *
+ * @param repo Repository where to find the refs
+ * @param glob Pattern to match (fnmatch-style) against reference name.
+ * @param callback Function which will be called for every listed ref
+ * @param payload Additional data to pass to the callback
+ * @return 0 on success, GIT_EUSER on non-zero callback, or error code
+ */
+GIT_EXTERN(int) git_reference_foreach_glob(
+	git_repository *repo,
+	const char *glob,
+	git_reference_foreach_name_cb callback,
+	void *payload);
+
+/**
+ * Check if a reflog exists for the specified reference.
+ *
+ * @param repo the repository
+ * @param refname the reference's name
+ * @return 0 when no reflog can be found, 1 when it exists;
+ * otherwise an error code.
+ */
+GIT_EXTERN(int) git_reference_has_log(git_repository *repo, const char *refname);
+
+/**
+ * Ensure there is a reflog for a particular reference.
+ *
+ * Make sure that successive updates to the reference will append to
+ * its log.
+ *
+ * @param repo the repository
+ * @param refname the reference's name
+ * @return 0 or an error code.
+ */
+GIT_EXTERN(int) git_reference_ensure_log(git_repository *repo, const char *refname);
+
+/**
+ * Check if a reference is a local branch.
+ *
+ * @param ref A git reference
+ *
+ * @return 1 when the reference lives in the refs/heads
+ * namespace; 0 otherwise.
+ */
+GIT_EXTERN(int) git_reference_is_branch(const git_reference *ref);
+
+/**
+ * Check if a reference is a remote tracking branch
+ *
+ * @param ref A git reference
+ *
+ * @return 1 when the reference lives in the refs/remotes
+ * namespace; 0 otherwise.
+ */
+GIT_EXTERN(int) git_reference_is_remote(const git_reference *ref);
+
+/**
+ * Check if a reference is a tag
+ *
+ * @param ref A git reference
+ *
+ * @return 1 when the reference lives in the refs/tags
+ * namespace; 0 otherwise.
+ */
+GIT_EXTERN(int) git_reference_is_tag(const git_reference *ref);
+
+/**
+ * Check if a reference is a note
+ *
+ * @param ref A git reference
+ *
+ * @return 1 when the reference lives in the refs/notes
+ * namespace; 0 otherwise.
+ */
+GIT_EXTERN(int) git_reference_is_note(const git_reference *ref);
+
+/**
+ * Normalization options for reference lookup
+ */
+typedef enum {
+	/**
+	 * No particular normalization.
+	 */
+	GIT_REFERENCE_FORMAT_NORMAL = 0u,
+
+	/**
+	 * Control whether one-level refnames are accepted
+	 * (i.e., refnames that do not contain multiple /-separated
+	 * components). Those are expected to be written only using
+	 * uppercase letters and underscore (FETCH_HEAD, ...)
+	 */
+	GIT_REFERENCE_FORMAT_ALLOW_ONELEVEL = (1u << 0),
+
+	/**
+	 * Interpret the provided name as a reference pattern for a
+	 * refspec (as used with remote repositories). If this option
+	 * is enabled, the name is allowed to contain a single * (<star>)
+	 * in place of a one full pathname component
+	 * (e.g., foo/<star>/bar but not foo/bar<star>).
+	 */
+	GIT_REFERENCE_FORMAT_REFSPEC_PATTERN = (1u << 1),
+
+	/**
+	 * Interpret the name as part of a refspec in shorthand form
+	 * so the `ONELEVEL` naming rules aren't enforced and 'master'
+	 * becomes a valid name.
+	 */
+	GIT_REFERENCE_FORMAT_REFSPEC_SHORTHAND = (1u << 2)
+} git_reference_format_t;
+
+/**
+ * Normalize reference name and check validity.
+ *
+ * This will normalize the reference name by removing any leading slash
+ * '/' characters and collapsing runs of adjacent slashes between name
+ * components into a single slash.
+ *
+ * Once normalized, if the reference name is valid, it will be returned in
+ * the user allocated buffer.
+ *
+ * See `git_reference_symbolic_create()` for rules about valid names.
+ *
+ * @param buffer_out User allocated buffer to store normalized name
+ * @param buffer_size Size of buffer_out
+ * @param name Reference name to be checked.
+ * @param flags Flags to constrain name validation rules - see the
+ *              GIT_REFERENCE_FORMAT constants above.
+ * @return 0 on success, GIT_EBUFS if buffer is too small, GIT_EINVALIDSPEC
+ * or an error code.
+ */
+GIT_EXTERN(int) git_reference_normalize_name(
+	char *buffer_out,
+	size_t buffer_size,
+	const char *name,
+	unsigned int flags);
+
+/**
+ * Recursively peel reference until object of the specified type is found.
+ *
+ * The retrieved `peeled` object is owned by the repository
+ * and should be closed with the `git_object_free` method.
+ *
+ * If you pass `GIT_OBJECT_ANY` as the target type, then the object
+ * will be peeled until a non-tag object is met.
+ *
+ * @param out Pointer to the peeled git_object
+ * @param ref The reference to be processed
+ * @param type The type of the requested object (GIT_OBJECT_COMMIT,
+ * GIT_OBJECT_TAG, GIT_OBJECT_TREE, GIT_OBJECT_BLOB or GIT_OBJECT_ANY).
+ * @return 0 on success, GIT_EAMBIGUOUS, GIT_ENOTFOUND or an error code
+ */
+GIT_EXTERN(int) git_reference_peel(
+	git_object **out,
+	const git_reference *ref,
+	git_object_t type);
+
+/**
+ * Ensure the reference name is well-formed.
+ *
+ * Valid reference names must follow one of two patterns:
+ *
+ * 1. Top-level names must contain only capital letters and underscores,
+ *    and must begin and end with a letter. (e.g. "HEAD", "ORIG_HEAD").
+ * 2. Names prefixed with "refs/" can be almost anything.  You must avoid
+ *    the characters '~', '^', ':', '\\', '?', '[', and '*', and the
+ *    sequences ".." and "@{" which have special meaning to revparse.
+ *
+ * @param valid output pointer to set with validity of given reference name
+ * @param refname name to be checked.
+ * @return 0 on success or an error code
+ */
+GIT_EXTERN(int) git_reference_name_is_valid(int *valid, const char *refname);
+
+/**
+ * Get the reference's short name
+ *
+ * This will transform the reference name into a name "human-readable"
+ * version. If no shortname is appropriate, it will return the full
+ * name.
+ *
+ * The memory is owned by the reference and must not be freed.
+ *
+ * @param ref a reference
+ * @return the human-readable version of the name
+ */
+GIT_EXTERN(const char *) git_reference_shorthand(const git_reference *ref);
+
+/** @} */
+GIT_END_DECL
+#endif

3rdparty/libgit2/include/git2/refspec.h

@@ -0,0 +1,121 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_refspec_h__
+#define INCLUDE_git_refspec_h__
+
+#include "common.h"
+#include "types.h"
+#include "net.h"
+#include "buffer.h"
+
+/**
+ * @file git2/refspec.h
+ * @brief Git refspec attributes
+ * @defgroup git_refspec Git refspec attributes
+ * @ingroup Git
+ * @{
+ */
+GIT_BEGIN_DECL
+
+/**
+ * Parse a given refspec string
+ *
+ * @param refspec a pointer to hold the refspec handle
+ * @param input the refspec string
+ * @param is_fetch is this a refspec for a fetch
+ * @return 0 if the refspec string could be parsed, -1 otherwise
+ */
+GIT_EXTERN(int) git_refspec_parse(git_refspec **refspec, const char *input, int is_fetch);
+
+/**
+ * Free a refspec object which has been created by git_refspec_parse
+ *
+ * @param refspec the refspec object
+ */
+GIT_EXTERN(void) git_refspec_free(git_refspec *refspec);
+
+/**
+ * Get the source specifier
+ *
+ * @param refspec the refspec
+ * @return the refspec's source specifier
+ */
+GIT_EXTERN(const char *) git_refspec_src(const git_refspec *refspec);
+
+/**
+ * Get the destination specifier
+ *
+ * @param refspec the refspec
+ * @return the refspec's destination specifier
+ */
+GIT_EXTERN(const char *) git_refspec_dst(const git_refspec *refspec);
+
+/**
+ * Get the refspec's string
+ *
+ * @param refspec the refspec
+ * @returns the refspec's original string
+ */
+GIT_EXTERN(const char *) git_refspec_string(const git_refspec *refspec);
+
+/**
+ * Get the force update setting
+ *
+ * @param refspec the refspec
+ * @return 1 if force update has been set, 0 otherwise
+ */
+GIT_EXTERN(int) git_refspec_force(const git_refspec *refspec);
+
+/**
+ * Get the refspec's direction.
+ *
+ * @param spec refspec
+ * @return GIT_DIRECTION_FETCH or GIT_DIRECTION_PUSH
+ */
+GIT_EXTERN(git_direction) git_refspec_direction(const git_refspec *spec);
+
+/**
+ * Check if a refspec's source descriptor matches a reference 
+ *
+ * @param refspec the refspec
+ * @param refname the name of the reference to check
+ * @return 1 if the refspec matches, 0 otherwise
+ */
+GIT_EXTERN(int) git_refspec_src_matches(const git_refspec *refspec, const char *refname);
+
+/**
+ * Check if a refspec's destination descriptor matches a reference
+ *
+ * @param refspec the refspec
+ * @param refname the name of the reference to check
+ * @return 1 if the refspec matches, 0 otherwise
+ */
+GIT_EXTERN(int) git_refspec_dst_matches(const git_refspec *refspec, const char *refname);
+
+/**
+ * Transform a reference to its target following the refspec's rules
+ *
+ * @param out where to store the target name
+ * @param spec the refspec
+ * @param name the name of the reference to transform
+ * @return 0, GIT_EBUFS or another error
+ */
+GIT_EXTERN(int) git_refspec_transform(git_buf *out, const git_refspec *spec, const char *name);
+
+/**
+ * Transform a target reference to its source reference following the refspec's rules
+ *
+ * @param out where to store the source reference name
+ * @param spec the refspec
+ * @param name the name of the reference to transform
+ * @return 0, GIT_EBUFS or another error
+ */
+GIT_EXTERN(int) git_refspec_rtransform(git_buf *out, const git_refspec *spec, const char *name);
+
+GIT_END_DECL
+
+#endif

3rdparty/libgit2/include/git2/repository.h

@@ -0,0 +1,996 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_repository_h__
+#define INCLUDE_git_repository_h__
+
+#include "common.h"
+#include "types.h"
+#include "oid.h"
+#include "buffer.h"
+#include "commit.h"
+
+/**
+ * @file git2/repository.h
+ * @brief Git repository management routines
+ * @defgroup git_repository Git repository management routines
+ * @ingroup Git
+ * @{
+ */
+GIT_BEGIN_DECL
+
+/**
+ * Open a git repository.
+ *
+ * The 'path' argument must point to either a git repository
+ * folder, or an existing work dir.
+ *
+ * The method will automatically detect if 'path' is a normal
+ * or bare repository or fail is 'path' is neither.
+ *
+ * @param out pointer to the repo which will be opened
+ * @param path the path to the repository
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_repository_open(git_repository **out, const char *path);
+/**
+ * Open working tree as a repository
+ *
+ * Open the working directory of the working tree as a normal
+ * repository that can then be worked on.
+ *
+ * @param out Output pointer containing opened repository
+ * @param wt Working tree to open
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_repository_open_from_worktree(git_repository **out, git_worktree *wt);
+
+/**
+ * Create a "fake" repository to wrap an object database
+ *
+ * Create a repository object to wrap an object database to be used
+ * with the API when all you have is an object database. This doesn't
+ * have any paths associated with it, so use with care.
+ *
+ * @param out pointer to the repo
+ * @param odb the object database to wrap
+ * @param oid_type the oid type of the object database
+ * @return 0 or an error code
+ */
+#ifdef GIT_EXPERIMENTAL_SHA256
+GIT_EXTERN(int) git_repository_wrap_odb(
+	git_repository **out,
+	git_odb *odb,
+	git_oid_t oid_type);
+#else
+GIT_EXTERN(int) git_repository_wrap_odb(
+	git_repository **out,
+	git_odb *odb);
+#endif
+
+/**
+ * Look for a git repository and copy its path in the given buffer.
+ * The lookup start from base_path and walk across parent directories
+ * if nothing has been found. The lookup ends when the first repository
+ * is found, or when reaching a directory referenced in ceiling_dirs
+ * or when the filesystem changes (in case across_fs is true).
+ *
+ * The method will automatically detect if the repository is bare
+ * (if there is a repository).
+ *
+ * @param out A pointer to a user-allocated git_buf which will contain
+ * the found path.
+ *
+ * @param start_path The base path where the lookup starts.
+ *
+ * @param across_fs If true, then the lookup will not stop when a
+ * filesystem device change is detected while exploring parent directories.
+ *
+ * @param ceiling_dirs A GIT_PATH_LIST_SEPARATOR separated list of
+ * absolute symbolic link free paths. The lookup will stop when any
+ * of this paths is reached. Note that the lookup always performs on
+ * start_path no matter start_path appears in ceiling_dirs ceiling_dirs
+ * might be NULL (which is equivalent to an empty string)
+ *
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_repository_discover(
+		git_buf *out,
+		const char *start_path,
+		int across_fs,
+		const char *ceiling_dirs);
+
+/**
+ * Option flags for `git_repository_open_ext`.
+ */
+typedef enum {
+	/**
+	 * Only open the repository if it can be immediately found in the
+	 * start_path. Do not walk up from the start_path looking at parent
+	 * directories.
+	 */
+	GIT_REPOSITORY_OPEN_NO_SEARCH = (1 << 0),
+
+	/**
+	 * Unless this flag is set, open will not continue searching across
+	 * filesystem boundaries (i.e. when `st_dev` changes from the `stat`
+	 * system call).  For example, searching in a user's home directory at
+	 * "/home/user/source/" will not return "/.git/" as the found repo if
+	 * "/" is a different filesystem than "/home".
+	 */
+	GIT_REPOSITORY_OPEN_CROSS_FS  = (1 << 1),
+
+	/**
+	 * Open repository as a bare repo regardless of core.bare config, and
+	 * defer loading config file for faster setup.
+	 * Unlike `git_repository_open_bare`, this can follow gitlinks.
+	 */
+	GIT_REPOSITORY_OPEN_BARE      = (1 << 2),
+
+	/**
+	 * Do not check for a repository by appending /.git to the start_path;
+	 * only open the repository if start_path itself points to the git
+	 * directory.
+	 */
+	GIT_REPOSITORY_OPEN_NO_DOTGIT = (1 << 3),
+
+	/**
+	 * Find and open a git repository, respecting the environment variables
+	 * used by the git command-line tools.
+	 * If set, `git_repository_open_ext` will ignore the other flags and
+	 * the `ceiling_dirs` argument, and will allow a NULL `path` to use
+	 * `GIT_DIR` or search from the current directory.
+	 * The search for a repository will respect $GIT_CEILING_DIRECTORIES and
+	 * $GIT_DISCOVERY_ACROSS_FILESYSTEM.  The opened repository will
+	 * respect $GIT_INDEX_FILE, $GIT_NAMESPACE, $GIT_OBJECT_DIRECTORY, and
+	 * $GIT_ALTERNATE_OBJECT_DIRECTORIES.
+	 * In the future, this flag will also cause `git_repository_open_ext`
+	 * to respect $GIT_WORK_TREE and $GIT_COMMON_DIR; currently,
+	 * `git_repository_open_ext` with this flag will error out if either
+	 * $GIT_WORK_TREE or $GIT_COMMON_DIR is set.
+	 */
+	GIT_REPOSITORY_OPEN_FROM_ENV  = (1 << 4)
+} git_repository_open_flag_t;
+
+/**
+ * Find and open a repository with extended controls.
+ *
+ * @param out Pointer to the repo which will be opened.  This can
+ *        actually be NULL if you only want to use the error code to
+ *        see if a repo at this path could be opened.
+ * @param path Path to open as git repository.  If the flags
+ *        permit "searching", then this can be a path to a subdirectory
+ *        inside the working directory of the repository. May be NULL if
+ *        flags is GIT_REPOSITORY_OPEN_FROM_ENV.
+ * @param flags A combination of the GIT_REPOSITORY_OPEN flags above.
+ * @param ceiling_dirs A GIT_PATH_LIST_SEPARATOR delimited list of path
+ *        prefixes at which the search for a containing repository should
+ *        terminate.
+ * @return 0 on success, GIT_ENOTFOUND if no repository could be found,
+ *        or -1 if there was a repository but open failed for some reason
+ *        (such as repo corruption or system errors).
+ */
+GIT_EXTERN(int) git_repository_open_ext(
+	git_repository **out,
+	const char *path,
+	unsigned int flags,
+	const char *ceiling_dirs);
+
+/**
+ * Open a bare repository on the serverside.
+ *
+ * This is a fast open for bare repositories that will come in handy
+ * if you're e.g. hosting git repositories and need to access them
+ * efficiently
+ *
+ * @param out Pointer to the repo which will be opened.
+ * @param bare_path Direct path to the bare repository
+ * @return 0 on success, or an error code
+ */
+GIT_EXTERN(int) git_repository_open_bare(git_repository **out, const char *bare_path);
+
+/**
+ * Free a previously allocated repository
+ *
+ * Note that after a repository is free'd, all the objects it has spawned
+ * will still exist until they are manually closed by the user
+ * with `git_object_free`, but accessing any of the attributes of
+ * an object without a backing repository will result in undefined
+ * behavior
+ *
+ * @param repo repository handle to close. If NULL nothing occurs.
+ */
+GIT_EXTERN(void) git_repository_free(git_repository *repo);
+
+/**
+ * Creates a new Git repository in the given folder.
+ *
+ * TODO:
+ *	- Reinit the repository
+ *
+ * @param out pointer to the repo which will be created or reinitialized
+ * @param path the path to the repository
+ * @param is_bare if true, a Git repository without a working directory is
+ *		created at the pointed path. If false, provided path will be
+ *		considered as the working directory into which the .git directory
+ *		will be created.
+ *
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_repository_init(
+	git_repository **out,
+	const char *path,
+	unsigned is_bare);
+
+/**
+ * Option flags for `git_repository_init_ext`.
+ *
+ * These flags configure extra behaviors to `git_repository_init_ext`.
+ * In every case, the default behavior is the zero value (i.e. flag is
+ * not set). Just OR the flag values together for the `flags` parameter
+ * when initializing a new repo.
+ */
+typedef enum {
+	/**
+	 * Create a bare repository with no working directory.
+	 */
+	GIT_REPOSITORY_INIT_BARE              = (1u << 0),
+
+	/**
+	 * Return an GIT_EEXISTS error if the repo_path appears to already be
+	 * an git repository.
+	 */
+	GIT_REPOSITORY_INIT_NO_REINIT         = (1u << 1),
+
+	/**
+	 * Normally a "/.git/" will be appended to the repo path for
+	 * non-bare repos (if it is not already there), but passing this flag
+	 * prevents that behavior.
+	 */
+	GIT_REPOSITORY_INIT_NO_DOTGIT_DIR     = (1u << 2),
+
+	/**
+	 * Make the repo_path (and workdir_path) as needed. Init is always willing
+	 * to create the ".git" directory even without this flag. This flag tells
+	 * init to create the trailing component of the repo and workdir paths
+	 * as needed.
+	 */
+	GIT_REPOSITORY_INIT_MKDIR             = (1u << 3),
+
+	/**
+	 * Recursively make all components of the repo and workdir paths as
+	 * necessary.
+	 */
+	GIT_REPOSITORY_INIT_MKPATH            = (1u << 4),
+
+	/**
+	 * libgit2 normally uses internal templates to initialize a new repo.
+	 * This flags enables external templates, looking the "template_path" from
+	 * the options if set, or the `init.templatedir` global config if not,
+	 * or falling back on "/usr/share/git-core/templates" if it exists.
+	 */
+	GIT_REPOSITORY_INIT_EXTERNAL_TEMPLATE = (1u << 5),
+
+	/**
+	 * If an alternate workdir is specified, use relative paths for the gitdir
+	 * and core.worktree.
+	 */
+	GIT_REPOSITORY_INIT_RELATIVE_GITLINK  = (1u << 6)
+} git_repository_init_flag_t;
+
+/**
+ * Mode options for `git_repository_init_ext`.
+ *
+ * Set the mode field of the `git_repository_init_options` structure
+ * either to the custom mode that you would like, or to one of the
+ * defined modes.
+ */
+typedef enum {
+	/**
+	 * Use permissions configured by umask - the default.
+	 */
+	GIT_REPOSITORY_INIT_SHARED_UMASK = 0,
+
+	/**
+	 * Use "--shared=group" behavior, chmod'ing the new repo to be group
+	 * writable and "g+sx" for sticky group assignment.
+	 */
+	GIT_REPOSITORY_INIT_SHARED_GROUP = 0002775,
+
+	/**
+	 * Use "--shared=all" behavior, adding world readability.
+	 */
+	GIT_REPOSITORY_INIT_SHARED_ALL   = 0002777
+} git_repository_init_mode_t;
+
+/**
+ * Extended options structure for `git_repository_init_ext`.
+ *
+ * This contains extra options for `git_repository_init_ext` that enable
+ * additional initialization features.
+ */
+typedef struct {
+	unsigned int version;
+
+	/**
+	 * Combination of GIT_REPOSITORY_INIT flags above.
+	 */
+	uint32_t    flags;
+
+	/**
+	 * Set to one of the standard GIT_REPOSITORY_INIT_SHARED_... constants
+	 * above, or to a custom value that you would like.
+	 */
+	uint32_t    mode;
+
+	/**
+	 * The path to the working dir or NULL for default (i.e. repo_path parent
+	 * on non-bare repos). IF THIS IS RELATIVE PATH, IT WILL BE EVALUATED
+	 * RELATIVE TO THE REPO_PATH. If this is not the "natural" working
+	 * directory, a .git gitlink file will be created here linking to the
+	 * repo_path.
+	 */
+	const char *workdir_path;
+
+	/**
+	 * If set, this will be used to initialize the "description" file in the
+	 * repository, instead of using the template content.
+	 */
+	const char *description;
+
+	/**
+	 * When GIT_REPOSITORY_INIT_EXTERNAL_TEMPLATE is set, this contains
+	 * the path to use for the template directory. If this is NULL, the config
+	 * or default directory options will be used instead.
+	 */
+	const char *template_path;
+
+	/**
+	 * The name of the head to point HEAD at. If NULL, then this will be
+	 * treated as "master" and the HEAD ref will be set to "refs/heads/master".
+	 * If this begins with "refs/" it will be used verbatim;
+	 * otherwise "refs/heads/" will be prefixed.
+	 */
+	const char *initial_head;
+
+	/**
+	 * If this is non-NULL, then after the rest of the repository
+	 * initialization is completed, an "origin" remote will be added
+	 * pointing to this URL.
+	 */
+	const char *origin_url;
+
+#ifdef GIT_EXPERIMENTAL_SHA256
+	/**
+	 *
+	 * Type of object IDs to use for this repository, or 0 for
+	 * default (currently SHA1).
+	 */
+	git_oid_t oid_type;
+#endif
+} git_repository_init_options;
+
+#define GIT_REPOSITORY_INIT_OPTIONS_VERSION 1
+#define GIT_REPOSITORY_INIT_OPTIONS_INIT {GIT_REPOSITORY_INIT_OPTIONS_VERSION}
+
+/**
+ * Initialize git_repository_init_options structure
+ *
+ * Initializes a `git_repository_init_options` with default values. Equivalent to
+ * creating an instance with `GIT_REPOSITORY_INIT_OPTIONS_INIT`.
+ *
+ * @param opts The `git_repository_init_options` struct to initialize.
+ * @param version The struct version; pass `GIT_REPOSITORY_INIT_OPTIONS_VERSION`.
+ * @return Zero on success; -1 on failure.
+ */
+GIT_EXTERN(int) git_repository_init_options_init(
+	git_repository_init_options *opts,
+	unsigned int version);
+
+/**
+ * Create a new Git repository in the given folder with extended controls.
+ *
+ * This will initialize a new git repository (creating the repo_path
+ * if requested by flags) and working directory as needed.  It will
+ * auto-detect the case sensitivity of the file system and if the
+ * file system supports file mode bits correctly.
+ *
+ * @param out Pointer to the repo which will be created or reinitialized.
+ * @param repo_path The path to the repository.
+ * @param opts Pointer to git_repository_init_options struct.
+ * @return 0 or an error code on failure.
+ */
+GIT_EXTERN(int) git_repository_init_ext(
+	git_repository **out,
+	const char *repo_path,
+	git_repository_init_options *opts);
+
+/**
+ * Retrieve and resolve the reference pointed at by HEAD.
+ *
+ * The returned `git_reference` will be owned by caller and
+ * `git_reference_free()` must be called when done with it to release the
+ * allocated memory and prevent a leak.
+ *
+ * @param out pointer to the reference which will be retrieved
+ * @param repo a repository object
+ *
+ * @return 0 on success, GIT_EUNBORNBRANCH when HEAD points to a non existing
+ * branch, GIT_ENOTFOUND when HEAD is missing; an error code otherwise
+ */
+GIT_EXTERN(int) git_repository_head(git_reference **out, git_repository *repo);
+
+/**
+ * Retrieve the referenced HEAD for the worktree
+ *
+ * @param out pointer to the reference which will be retrieved
+ * @param repo a repository object
+ * @param name name of the worktree to retrieve HEAD for
+ * @return 0 when successful, error-code otherwise
+ */
+GIT_EXTERN(int) git_repository_head_for_worktree(git_reference **out, git_repository *repo,
+	const char *name);
+
+/**
+ * Check if a repository's HEAD is detached
+ *
+ * A repository's HEAD is detached when it points directly to a commit
+ * instead of a branch.
+ *
+ * @param repo Repo to test
+ * @return 1 if HEAD is detached, 0 if it's not; error code if there
+ * was an error.
+ */
+GIT_EXTERN(int) git_repository_head_detached(git_repository *repo);
+
+/**
+ * Check if a worktree's HEAD is detached
+ *
+ * A worktree's HEAD is detached when it points directly to a
+ * commit instead of a branch.
+ *
+ * @param repo a repository object
+ * @param name name of the worktree to retrieve HEAD for
+ * @return 1 if HEAD is detached, 0 if its not; error code if
+ *  there was an error
+ */
+GIT_EXTERN(int) git_repository_head_detached_for_worktree(git_repository *repo,
+	const char *name);
+
+/**
+ * Check if the current branch is unborn
+ *
+ * An unborn branch is one named from HEAD but which doesn't exist in
+ * the refs namespace, because it doesn't have any commit to point to.
+ *
+ * @param repo Repo to test
+ * @return 1 if the current branch is unborn, 0 if it's not; error
+ * code if there was an error
+ */
+GIT_EXTERN(int) git_repository_head_unborn(git_repository *repo);
+
+/**
+ * Check if a repository is empty
+ *
+ * An empty repository has just been initialized and contains no references
+ * apart from HEAD, which must be pointing to the unborn master branch,
+ * or the branch specified for the repository in the `init.defaultBranch`
+ * configuration variable.
+ *
+ * @param repo Repo to test
+ * @return 1 if the repository is empty, 0 if it isn't, error code
+ * if the repository is corrupted
+ */
+GIT_EXTERN(int) git_repository_is_empty(git_repository *repo);
+
+/**
+ * List of items which belong to the git repository layout
+ */
+typedef enum {
+	GIT_REPOSITORY_ITEM_GITDIR,
+	GIT_REPOSITORY_ITEM_WORKDIR,
+	GIT_REPOSITORY_ITEM_COMMONDIR,
+	GIT_REPOSITORY_ITEM_INDEX,
+	GIT_REPOSITORY_ITEM_OBJECTS,
+	GIT_REPOSITORY_ITEM_REFS,
+	GIT_REPOSITORY_ITEM_PACKED_REFS,
+	GIT_REPOSITORY_ITEM_REMOTES,
+	GIT_REPOSITORY_ITEM_CONFIG,
+	GIT_REPOSITORY_ITEM_INFO,
+	GIT_REPOSITORY_ITEM_HOOKS,
+	GIT_REPOSITORY_ITEM_LOGS,
+	GIT_REPOSITORY_ITEM_MODULES,
+	GIT_REPOSITORY_ITEM_WORKTREES,
+	GIT_REPOSITORY_ITEM_WORKTREE_CONFIG,
+	GIT_REPOSITORY_ITEM__LAST
+} git_repository_item_t;
+
+/**
+ * Get the location of a specific repository file or directory
+ *
+ * This function will retrieve the path of a specific repository
+ * item. It will thereby honor things like the repository's
+ * common directory, gitdir, etc. In case a file path cannot
+ * exist for a given item (e.g. the working directory of a bare
+ * repository), GIT_ENOTFOUND is returned.
+ *
+ * @param out Buffer to store the path at
+ * @param repo Repository to get path for
+ * @param item The repository item for which to retrieve the path
+ * @return 0, GIT_ENOTFOUND if the path cannot exist or an error code
+ */
+GIT_EXTERN(int) git_repository_item_path(git_buf *out, const git_repository *repo, git_repository_item_t item);
+
+/**
+ * Get the path of this repository
+ *
+ * This is the path of the `.git` folder for normal repositories,
+ * or of the repository itself for bare repositories.
+ *
+ * @param repo A repository object
+ * @return the path to the repository
+ */
+GIT_EXTERN(const char *) git_repository_path(const git_repository *repo);
+
+/**
+ * Get the path of the working directory for this repository
+ *
+ * If the repository is bare, this function will always return
+ * NULL.
+ *
+ * @param repo A repository object
+ * @return the path to the working dir, if it exists
+ */
+GIT_EXTERN(const char *) git_repository_workdir(const git_repository *repo);
+
+/**
+ * Get the path of the shared common directory for this repository.
+ *
+ * If the repository is bare, it is the root directory for the repository.
+ * If the repository is a worktree, it is the parent repo's gitdir.
+ * Otherwise, it is the gitdir.
+ *
+ * @param repo A repository object
+ * @return the path to the common dir
+ */
+GIT_EXTERN(const char *) git_repository_commondir(const git_repository *repo);
+
+/**
+ * Set the path to the working directory for this repository
+ *
+ * The working directory doesn't need to be the same one
+ * that contains the `.git` folder for this repository.
+ *
+ * If this repository is bare, setting its working directory
+ * will turn it into a normal repository, capable of performing
+ * all the common workdir operations (checkout, status, index
+ * manipulation, etc).
+ *
+ * @param repo A repository object
+ * @param workdir The path to a working directory
+ * @param update_gitlink Create/update gitlink in workdir and set config
+ *        "core.worktree" (if workdir is not the parent of the .git directory)
+ * @return 0, or an error code
+ */
+GIT_EXTERN(int) git_repository_set_workdir(
+	git_repository *repo, const char *workdir, int update_gitlink);
+
+/**
+ * Check if a repository is bare
+ *
+ * @param repo Repo to test
+ * @return 1 if the repository is bare, 0 otherwise.
+ */
+GIT_EXTERN(int) git_repository_is_bare(const git_repository *repo);
+
+/**
+ * Check if a repository is a linked work tree
+ *
+ * @param repo Repo to test
+ * @return 1 if the repository is a linked work tree, 0 otherwise.
+ */
+GIT_EXTERN(int) git_repository_is_worktree(const git_repository *repo);
+
+/**
+ * Get the configuration file for this repository.
+ *
+ * If a configuration file has not been set, the default
+ * config set for the repository will be returned, including
+ * global and system configurations (if they are available).
+ *
+ * The configuration file must be freed once it's no longer
+ * being used by the user.
+ *
+ * @param out Pointer to store the loaded configuration
+ * @param repo A repository object
+ * @return 0, or an error code
+ */
+GIT_EXTERN(int) git_repository_config(git_config **out, git_repository *repo);
+
+/**
+ * Get a snapshot of the repository's configuration
+ *
+ * Convenience function to take a snapshot from the repository's
+ * configuration.  The contents of this snapshot will not change,
+ * even if the underlying config files are modified.
+ *
+ * The configuration file must be freed once it's no longer
+ * being used by the user.
+ *
+ * @param out Pointer to store the loaded configuration
+ * @param repo the repository
+ * @return 0, or an error code
+ */
+GIT_EXTERN(int) git_repository_config_snapshot(git_config **out, git_repository *repo);
+
+/**
+ * Get the Object Database for this repository.
+ *
+ * If a custom ODB has not been set, the default
+ * database for the repository will be returned (the one
+ * located in `.git/objects`).
+ *
+ * The ODB must be freed once it's no longer being used by
+ * the user.
+ *
+ * @param out Pointer to store the loaded ODB
+ * @param repo A repository object
+ * @return 0, or an error code
+ */
+GIT_EXTERN(int) git_repository_odb(git_odb **out, git_repository *repo);
+
+/**
+ * Get the Reference Database Backend for this repository.
+ *
+ * If a custom refsdb has not been set, the default database for
+ * the repository will be returned (the one that manipulates loose
+ * and packed references in the `.git` directory).
+ *
+ * The refdb must be freed once it's no longer being used by
+ * the user.
+ *
+ * @param out Pointer to store the loaded refdb
+ * @param repo A repository object
+ * @return 0, or an error code
+ */
+GIT_EXTERN(int) git_repository_refdb(git_refdb **out, git_repository *repo);
+
+/**
+ * Get the Index file for this repository.
+ *
+ * If a custom index has not been set, the default
+ * index for the repository will be returned (the one
+ * located in `.git/index`).
+ *
+ * The index must be freed once it's no longer being used by
+ * the user.
+ *
+ * @param out Pointer to store the loaded index
+ * @param repo A repository object
+ * @return 0, or an error code
+ */
+GIT_EXTERN(int) git_repository_index(git_index **out, git_repository *repo);
+
+/**
+ * Retrieve git's prepared message
+ *
+ * Operations such as git revert/cherry-pick/merge with the -n option
+ * stop just short of creating a commit with the changes and save
+ * their prepared message in .git/MERGE_MSG so the next git-commit
+ * execution can present it to the user for them to amend if they
+ * wish.
+ *
+ * Use this function to get the contents of this file. Don't forget to
+ * remove the file after you create the commit.
+ *
+ * @param out git_buf to write data into
+ * @param repo Repository to read prepared message from
+ * @return 0, GIT_ENOTFOUND if no message exists or an error code
+ */
+GIT_EXTERN(int) git_repository_message(git_buf *out, git_repository *repo);
+
+/**
+ * Remove git's prepared message.
+ *
+ * Remove the message that `git_repository_message` retrieves.
+ *
+ * @param repo Repository to remove prepared message from.
+ * @return 0 or an error code.
+ */
+GIT_EXTERN(int) git_repository_message_remove(git_repository *repo);
+
+/**
+ * Remove all the metadata associated with an ongoing command like merge,
+ * revert, cherry-pick, etc.  For example: MERGE_HEAD, MERGE_MSG, etc.
+ *
+ * @param repo A repository object
+ * @return 0 on success, or error
+ */
+GIT_EXTERN(int) git_repository_state_cleanup(git_repository *repo);
+
+/**
+ * Callback used to iterate over each FETCH_HEAD entry
+ *
+ * @see git_repository_fetchhead_foreach
+ *
+ * @param ref_name The reference name
+ * @param remote_url The remote URL
+ * @param oid The reference target OID
+ * @param is_merge Was the reference the result of a merge
+ * @param payload Payload passed to git_repository_fetchhead_foreach
+ * @return non-zero to terminate the iteration
+ */
+typedef int GIT_CALLBACK(git_repository_fetchhead_foreach_cb)(const char *ref_name,
+	const char *remote_url,
+	const git_oid *oid,
+	unsigned int is_merge,
+	void *payload);
+
+/**
+ * Invoke 'callback' for each entry in the given FETCH_HEAD file.
+ *
+ * Return a non-zero value from the callback to stop the loop.
+ *
+ * @param repo A repository object
+ * @param callback Callback function
+ * @param payload Pointer to callback data (optional)
+ * @return 0 on success, non-zero callback return value, GIT_ENOTFOUND if
+ *         there is no FETCH_HEAD file, or other error code.
+ */
+GIT_EXTERN(int) git_repository_fetchhead_foreach(
+	git_repository *repo,
+	git_repository_fetchhead_foreach_cb callback,
+	void *payload);
+
+/**
+ * Callback used to iterate over each MERGE_HEAD entry
+ *
+ * @see git_repository_mergehead_foreach
+ *
+ * @param oid The merge OID
+ * @param payload Payload passed to git_repository_mergehead_foreach
+ * @return non-zero to terminate the iteration
+ */
+typedef int GIT_CALLBACK(git_repository_mergehead_foreach_cb)(const git_oid *oid,
+	void *payload);
+
+/**
+ * If a merge is in progress, invoke 'callback' for each commit ID in the
+ * MERGE_HEAD file.
+ *
+ * Return a non-zero value from the callback to stop the loop.
+ *
+ * @param repo A repository object
+ * @param callback Callback function
+ * @param payload Pointer to callback data (optional)
+ * @return 0 on success, non-zero callback return value, GIT_ENOTFOUND if
+ *         there is no MERGE_HEAD file, or other error code.
+ */
+GIT_EXTERN(int) git_repository_mergehead_foreach(
+	git_repository *repo,
+	git_repository_mergehead_foreach_cb callback,
+	void *payload);
+
+/**
+ * Calculate hash of file using repository filtering rules.
+ *
+ * If you simply want to calculate the hash of a file on disk with no filters,
+ * you can just use the `git_odb_hashfile()` API.  However, if you want to
+ * hash a file in the repository and you want to apply filtering rules (e.g.
+ * crlf filters) before generating the SHA, then use this function.
+ *
+ * Note: if the repository has `core.safecrlf` set to fail and the
+ * filtering triggers that failure, then this function will return an
+ * error and not calculate the hash of the file.
+ *
+ * @param out Output value of calculated SHA
+ * @param repo Repository pointer
+ * @param path Path to file on disk whose contents should be hashed.  This
+ *             may be an absolute path or a relative path, in which case it
+ *             will be treated as a path within the working directory.
+ * @param type The object type to hash as (e.g. GIT_OBJECT_BLOB)
+ * @param as_path The path to use to look up filtering rules. If this is
+ *             an empty string then no filters will be applied when
+ *             calculating the hash. If this is `NULL` and the `path`
+ *             parameter is a file within the repository's working
+ *             directory, then the `path` will be used.
+ * @return 0 on success, or an error code
+ */
+GIT_EXTERN(int) git_repository_hashfile(
+	git_oid *out,
+	git_repository *repo,
+	const char *path,
+	git_object_t type,
+	const char *as_path);
+
+/**
+ * Make the repository HEAD point to the specified reference.
+ *
+ * If the provided reference points to a Tree or a Blob, the HEAD is
+ * unaltered and -1 is returned.
+ *
+ * If the provided reference points to a branch, the HEAD will point
+ * to that branch, staying attached, or become attached if it isn't yet.
+ * If the branch doesn't exist yet, no error will be return. The HEAD
+ * will then be attached to an unborn branch.
+ *
+ * Otherwise, the HEAD will be detached and will directly point to
+ * the Commit.
+ *
+ * @param repo Repository pointer
+ * @param refname Canonical name of the reference the HEAD should point at
+ * @return 0 on success, or an error code
+ */
+GIT_EXTERN(int) git_repository_set_head(
+	git_repository *repo,
+	const char *refname);
+
+/**
+ * Make the repository HEAD directly point to the Commit.
+ *
+ * If the provided committish cannot be found in the repository, the HEAD
+ * is unaltered and GIT_ENOTFOUND is returned.
+ *
+ * If the provided committish cannot be peeled into a commit, the HEAD
+ * is unaltered and -1 is returned.
+ *
+ * Otherwise, the HEAD will eventually be detached and will directly point to
+ * the peeled Commit.
+ *
+ * @param repo Repository pointer
+ * @param committish Object id of the Commit the HEAD should point to
+ * @return 0 on success, or an error code
+ */
+GIT_EXTERN(int) git_repository_set_head_detached(
+	git_repository *repo,
+	const git_oid *committish);
+
+/**
+ * Make the repository HEAD directly point to the Commit.
+ *
+ * This behaves like `git_repository_set_head_detached()` but takes an
+ * annotated commit, which lets you specify which extended sha syntax
+ * string was specified by a user, allowing for more exact reflog
+ * messages.
+ *
+ * See the documentation for `git_repository_set_head_detached()`.
+ *
+ * @see git_repository_set_head_detached
+ */
+GIT_EXTERN(int) git_repository_set_head_detached_from_annotated(
+	git_repository *repo,
+	const git_annotated_commit *committish);
+
+/**
+ * Detach the HEAD.
+ *
+ * If the HEAD is already detached and points to a Commit, 0 is returned.
+ *
+ * If the HEAD is already detached and points to a Tag, the HEAD is
+ * updated into making it point to the peeled Commit, and 0 is returned.
+ *
+ * If the HEAD is already detached and points to a non committish, the HEAD is
+ * unaltered, and -1 is returned.
+ *
+ * Otherwise, the HEAD will be detached and point to the peeled Commit.
+ *
+ * @param repo Repository pointer
+ * @return 0 on success, GIT_EUNBORNBRANCH when HEAD points to a non existing
+ * branch or an error code
+ */
+GIT_EXTERN(int) git_repository_detach_head(
+	git_repository *repo);
+
+/**
+ * Repository state
+ *
+ * These values represent possible states for the repository to be in,
+ * based on the current operation which is ongoing.
+ */
+typedef enum {
+	GIT_REPOSITORY_STATE_NONE,
+	GIT_REPOSITORY_STATE_MERGE,
+	GIT_REPOSITORY_STATE_REVERT,
+	GIT_REPOSITORY_STATE_REVERT_SEQUENCE,
+	GIT_REPOSITORY_STATE_CHERRYPICK,
+	GIT_REPOSITORY_STATE_CHERRYPICK_SEQUENCE,
+	GIT_REPOSITORY_STATE_BISECT,
+	GIT_REPOSITORY_STATE_REBASE,
+	GIT_REPOSITORY_STATE_REBASE_INTERACTIVE,
+	GIT_REPOSITORY_STATE_REBASE_MERGE,
+	GIT_REPOSITORY_STATE_APPLY_MAILBOX,
+	GIT_REPOSITORY_STATE_APPLY_MAILBOX_OR_REBASE
+} git_repository_state_t;
+
+/**
+ * Determines the status of a git repository - ie, whether an operation
+ * (merge, cherry-pick, etc) is in progress.
+ *
+ * @param repo Repository pointer
+ * @return The state of the repository
+ */
+GIT_EXTERN(int) git_repository_state(git_repository *repo);
+
+/**
+ * Sets the active namespace for this Git Repository
+ *
+ * This namespace affects all reference operations for the repo.
+ * See `man gitnamespaces`
+ *
+ * @param repo The repo
+ * @param nmspace The namespace. This should not include the refs
+ *	folder, e.g. to namespace all references under `refs/namespaces/foo/`,
+ *	use `foo` as the namespace.
+ *	@return 0 on success, -1 on error
+ */
+GIT_EXTERN(int) git_repository_set_namespace(git_repository *repo, const char *nmspace);
+
+/**
+ * Get the currently active namespace for this repository
+ *
+ * @param repo The repo
+ * @return the active namespace, or NULL if there isn't one
+ */
+GIT_EXTERN(const char *) git_repository_get_namespace(git_repository *repo);
+
+
+/**
+ * Determine if the repository was a shallow clone
+ *
+ * @param repo The repository
+ * @return 1 if shallow, zero if not
+ */
+GIT_EXTERN(int) git_repository_is_shallow(git_repository *repo);
+
+/**
+ * Retrieve the configured identity to use for reflogs
+ *
+ * The memory is owned by the repository and must not be freed by the
+ * user.
+ *
+ * @param name where to store the pointer to the name
+ * @param email where to store the pointer to the email
+ * @param repo the repository
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_repository_ident(const char **name, const char **email, const git_repository *repo);
+
+/**
+ * Set the identity to be used for writing reflogs
+ *
+ * If both are set, this name and email will be used to write to the
+ * reflog. Pass NULL to unset. When unset, the identity will be taken
+ * from the repository's configuration.
+ *
+ * @param repo the repository to configure
+ * @param name the name to use for the reflog entries
+ * @param email the email to use for the reflog entries
+ * @return 0 or an error code.
+ */
+GIT_EXTERN(int) git_repository_set_ident(git_repository *repo, const char *name, const char *email);
+
+/**
+ * Gets the object type used by this repository.
+ *
+ * @param repo the repository
+ * @return the object id type
+ */
+GIT_EXTERN(git_oid_t) git_repository_oid_type(git_repository *repo);
+
+/**
+ * Gets the parents of the next commit, given the current repository state.
+ * Generally, this is the HEAD commit, except when performing a merge, in
+ * which case it is two or more commits.
+ *
+ * @param commits a `git_commitarray` that will contain the commit parents
+ * @param repo the repository
+ * @return 0 or an error code
+ */
+GIT_EXTERN(int) git_repository_commit_parents(git_commitarray *commits, git_repository *repo);
+
+/** @} */
+GIT_END_DECL
+#endif