| /* |
| * 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_utfconv_h__ |
| #define INCLUDE_git_utfconv_h__ |
| |
| #include <wchar.h> |
| #include "common.h" |
| |
| /* Equal to the Win32 MAX_PATH constant. The maximum path length is 259 |
| * characters plus a NULL terminator. */ |
| #define GIT_WIN_PATH_UTF16 260 |
| |
| /* Maximum size of a UTF-8 Win32 path. UTF-8 does have 4-byte sequences, |
| * but they are encoded in UTF-16 using surrogate pairs, which takes up |
| * the space of two characters. Two characters in the range U+0800 -> |
| * U+FFFF take up more space in UTF-8 (6 bytes) than one surrogate pair |
| * (4 bytes). */ |
| #define GIT_WIN_PATH_UTF8 (259 * 3 + 1) |
| |
| /* Win32 path types */ |
| typedef wchar_t git_win32_path[GIT_WIN_PATH_UTF16]; |
| typedef char git_win32_utf8_path[GIT_WIN_PATH_UTF8]; |
| |
| /** |
| * Converts a UTF-8 string to wide characters. |
| * |
| * @param dest The buffer to receive the wide string. |
| * @param dest_size The size of the buffer, in characters. |
| * @param src The UTF-8 string to convert. |
| * @return The length of the wide string, in characters (not counting the NULL terminator), or < 0 for failure |
| */ |
| int git__utf8_to_16(wchar_t *dest, size_t dest_size, const char *src); |
| |
| /** |
| * Converts a wide string to UTF-8. |
| * |
| * @param dest The buffer to receive the UTF-8 string. |
| * @param dest_size The size of the buffer, in bytes. |
| * @param src The wide string to convert. |
| * @return The length of the UTF-8 string, in bytes (not counting the NULL terminator), or < 0 for failure |
| */ |
| int git__utf16_to_8(char *dest, size_t dest_size, const wchar_t *src); |
| |
| /** |
| * Converts a UTF-8 string to wide characters. |
| * Memory is allocated to hold the converted string. |
| * The caller is responsible for freeing the string with git__free. |
| * |
| * @param dest Receives a pointer to the wide string. |
| * @param src The UTF-8 string to convert. |
| * @return The length of the wide string, in characters (not counting the NULL terminator), or < 0 for failure |
| */ |
| int git__utf8_to_16_alloc(wchar_t **dest, const char *src); |
| |
| /** |
| * Converts a wide string to UTF-8. |
| * Memory is allocated to hold the converted string. |
| * The caller is responsible for freeing the string with git__free. |
| * |
| * @param dest Receives a pointer to the UTF-8 string. |
| * @param src The wide string to convert. |
| * @return The length of the UTF-8 string, in bytes (not counting the NULL terminator), or < 0 for failure |
| */ |
| int git__utf16_to_8_alloc(char **dest, const wchar_t *src); |
| |
| /** |
| * Converts a UTF-8 Win32 path to wide characters. |
| * |
| * @param dest The buffer to receive the wide string. |
| * @param src The UTF-8 string to convert. |
| * @return The length of the wide string, in characters (not counting the NULL terminator), or < 0 for failure |
| */ |
| GIT_INLINE(int) git_win32_path_from_utf8(git_win32_path dest, const char *src) |
| { |
| return git__utf8_to_16(dest, GIT_WIN_PATH_UTF16, src); |
| } |
| |
| /** |
| * Converts a wide Win32 path to UTF-8. |
| * |
| * @param dest The buffer to receive the UTF-8 string. |
| * @param src The wide string to convert. |
| * @return The length of the UTF-8 string, in bytes (not counting the NULL terminator), or < 0 for failure |
| */ |
| GIT_INLINE(int) git_win32_path_to_utf8(git_win32_utf8_path dest, const wchar_t *src) |
| { |
| return git__utf16_to_8(dest, GIT_WIN_PATH_UTF8, src); |
| } |
| |
| #endif |