reactos/lib/sdk/crt/stdlib/mbstowcs.c

   1 #include <precomp.h>
   2
   3 /*********************************************************************
   4  * _mbstowcs_l
   5  */
   6 size_t CDECL _mbstowcs_l(wchar_t *wcstr, const char *mbstr,
   7         size_t count, _locale_t locale)
   8 {
   9     MSVCRT_pthreadlocinfo locinfo;
  10     size_t i, size;
  11
  12     if(!locale)
  13         locinfo = get_locinfo();
  14     else
  15         locinfo = ((MSVCRT__locale_t)locale)->locinfo;
  16
  17     /* Ignore count parameter */
  18     if(!wcstr)
  19         return MultiByteToWideChar(locinfo->lc_codepage, 0, mbstr, -1, NULL, 0)-1;
  20
  21     for(i=0, size=0; i<count; i++) {
  22         if(mbstr[size] == '\0')
  23             break;
  24
  25         size += (_isleadbyte_l((unsigned char)mbstr[size], locale) ? 2 : 1);
  26     }
  27
  28     size = MultiByteToWideChar(locinfo->lc_codepage, 0,
  29             mbstr, size, wcstr, count);
  30
  31     if(size<count && wcstr)
  32         wcstr[size] = '\0';
  33
  34     return size;
  35 }
  36
  37 /*
  38  * @implemented
  39  */
  40 size_t mbstowcs (wchar_t *widechar, const char *multibyte, size_t number)
  41 {
  42     return _mbstowcs_l(widechar, multibyte, number, NULL);
  43 }