src/win32/utf-conv.c

   1 /*
   2  * Copyright (C) 2009-2012 the libgit2 contributors
   3  *
   4  * This file is part of libgit2, distributed under the GNU GPL v2 with
   5  * a Linking Exception. For full terms see the included COPYING file.
   6  */
   7
   8 #include "common.h"
   9 #include "utf-conv.h"
  10 #include "git2/windows.h"
  11
  12 /*
  13  * Default codepage value
  14  */
  15 static int _active_codepage = CP_UTF8;
  16
  17 void gitwin_set_codepage(unsigned int codepage)
  18 {
  19         _active_codepage = codepage;
  20 }
  21
  22 unsigned int gitwin_get_codepage(void)
  23 {
  24         return _active_codepage;
  25 }
  26
  27 void gitwin_set_utf8(void)
  28 {
  29         _active_codepage = CP_UTF8;
  30 }
  31
  32 wchar_t* gitwin_to_utf16(const char* str)
  33 {
  34         wchar_t* ret;
  35         int cb;
  36
  37         if (!str) {
  38                 return NULL;
  39         }
  40
  41         cb = strlen(str) * sizeof(wchar_t);
  42         if (cb == 0) {
  43                 ret = (wchar_t*)git__malloc(sizeof(wchar_t));
  44                 ret[0] = 0;
  45                 return ret;
  46         }
  47
  48         /* Add space for null terminator */
  49         cb += sizeof(wchar_t);
  50
  51         ret = (wchar_t*)git__malloc(cb);
  52
  53         if (MultiByteToWideChar(_active_codepage, 0, str, -1, ret, cb) == 0) {
  54                 git__free(ret);
  55                 ret = NULL;
  56         }
  57
  58         return ret;
  59 }
  60
  61 int gitwin_append_utf16(wchar_t *buffer, const char *str, size_t len)
  62 {
  63         return MultiByteToWideChar(_active_codepage, 0, str, -1, buffer, len);
  64 }
  65
  66 char* gitwin_from_utf16(const wchar_t* str)
  67 {
  68         char* ret;
  69         int cb;
  70
  71         if (!str) {
  72                 return NULL;
  73         }
  74
  75         cb = wcslen(str) * sizeof(char);
  76         if (cb == 0) {
  77                 ret = (char*)git__malloc(sizeof(char));
  78                 ret[0] = 0;
  79                 return ret;
  80         }
  81
  82         /* Add space for null terminator */
  83         cb += sizeof(char);
  84
  85         ret = (char*)git__malloc(cb);
  86
  87         if (WideCharToMultiByte(_active_codepage, 0, str, -1, ret, cb, NULL, NULL) == 0) {
  88                 git__free(ret);
  89                 ret = NULL;
  90         }
  91
  92         return ret;
  93
  94 }