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mbtowc returns -1 if we can't find a valid multibyte char in the non

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NULL source string.
This commit is contained in:
Michael Stefaniuc 2003-04-17 02:15:03 +00:00 committed by Alexandre Julliard
parent 6a7d463ca6
commit 7d77d77d71
1 changed files with 15 additions and 10 deletions
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25
dlls/msvcrt/mbcs.c
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@ -588,16 +588,21 @@ unsigned char* _mbstok(unsigned char *str, const unsigned char *delim)
*/
int MSVCRT_mbtowc(MSVCRT_wchar_t *dst, const char* str, MSVCRT_size_t n)
{
if(n <= 0 || !str)
return 0;
if(!MultiByteToWideChar(CP_ACP, 0, str, n, dst, 1))
return 0;
/* return the number of bytes from src that have been used */
if(!*str)
return 0;
if(n >= 2 && MSVCRT_isleadbyte(*str) && str[1])
return 2;
return 1;
/* temp var needed because MultiByteToWideChar wants non NULL destination */
MSVCRT_wchar_t tmpdst = '\0';
if(n <= 0 || !str)
return 0;
if(!MultiByteToWideChar(CP_ACP, 0, str, n, &tmpdst, 1))
return -1;
if(dst)
*dst = tmpdst;
/* return the number of bytes from src that have been used */
if(!*str)
return 0;
if(n >= 2 && MSVCRT_isleadbyte(*str) && str[1])
return 2;
return 1;
}
/*********************************************************************