reactos/lib/msvcrt/stdlib/mbtowc.c

   1 #include <windows.h>
   2 #include <msvcrt/stdlib.h>
   3 #include <msvcrt/ctype.h>
   4
   5
   6 #if 1
   7
   8 int mbtowc(wchar_t *dst, const char *str, size_t n)
   9 {
  10 //    printf("\t\t\tmbtowc(%p, %p, %d) called.\n", dst, str, n);
  11
  12     if (n <= 0 || !str)
  13         return 0;
  14
  15     *dst = *str;
  16
  17     if (!*str)
  18         return 0;
  19     return 1;
  20 }
  21
  22 #else
  23
  24 int mbtowc(wchar_t *dst, const char *str, size_t n)
  25 {
  26     if (n <= 0 || !str)
  27         return 0;
  28     if (!MultiByteToWideChar(CP_ACP, 0, str, n, dst, (dst == NULL) ? 0 : 1)) {
  29         DWORD err = GetLastError();
  30         switch (err) {
  31         case ERROR_INSUFFICIENT_BUFFER:
  32             break;
  33         case ERROR_INVALID_FLAGS:
  34             break;
  35         case ERROR_INVALID_PARAMETER:
  36             break;
  37         case ERROR_NO_UNICODE_TRANSLATION:
  38             break;
  39         default:
  40             return 1;
  41         }
  42         return -1;
  43     }
  44     /* return the number of bytes from src that have been used */
  45     if (!*str)
  46         return 0;
  47     if (n >= 2 && isleadbyte(*str) && str[1])
  48         return 2;
  49     return 1;
  50 }
  51
  52 #endif