src/win32/utf-conv.c

   1 /*
   2  * Copyright (C) 2009-2011 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
  11 /*
  12  * Default codepage value
  13  */
  14 static int _active_codepage = CP_UTF8;
  15
  16 void gitwin_set_codepage(unsigned int codepage)
  17 {
  18         _active_codepage = codepage;
  19 }
  20
  21 unsigned int gitwin_get_codepage(void)
  22 {
  23         return _active_codepage;
  24 }
  25
  26 void gitwin_set_utf8(void)
  27 {
  28         _active_codepage = CP_UTF8;
  29 }
  30
  31 wchar_t* gitwin_to_utf16(const char* str)
  32 {
  33         wchar_t* ret;
  34         int cb;
  35
  36         if (!str) {
  37                 return NULL;
  38         }
  39
  40         cb = strlen(str) * sizeof(wchar_t);
  41         if (cb == 0) {
  42                 ret = (wchar_t*)git__malloc(sizeof(wchar_t));
  43                 ret[0] = 0;
  44                 return ret;
  45         }
  46
  47         /* Add space for null terminator */
  48         cb += sizeof(wchar_t);
  49
  50         ret = (wchar_t*)git__malloc(cb);
  51
  52         if (MultiByteToWideChar(_active_codepage, 0, str, -1, ret, cb) == 0) {
  53                 git__free(ret);
  54                 ret = NULL;
  55         }
  56
  57         return ret;
  58 }
  59
  60 char* gitwin_from_utf16(const wchar_t* str)
  61 {
  62         char* ret;
  63         int cb;
  64
  65         if (!str) {
  66                 return NULL;
  67         }
  68
  69         cb = wcslen(str) * sizeof(char);
  70         if (cb == 0) {
  71                 ret = (char*)git__malloc(sizeof(char));
  72                 ret[0] = 0;
  73                 return ret;
  74         }
  75
  76         /* Add space for null terminator */
  77         cb += sizeof(char);
  78
  79         ret = (char*)git__malloc(cb);
  80
  81         if (WideCharToMultiByte(_active_codepage, 0, str, -1, ret, cb, NULL, NULL) == 0) {
  82                 git__free(ret);
  83                 ret = NULL;
  84         }
  85
  86         return ret;
  87
  88 }