Windows NT 4.0 source code leak
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66 lines
1.3 KiB

/***
*mbslen.c - Find length of MBCS string
*
* Copyright (c) 1985-1994, Microsoft Corporation. All rights reserved.
*
*Purpose:
* Find length of MBCS string
*
*Revision History:
* 11-19-92 KRS Ported from 16-bit sources.
* 10-05-93 GJF Replaced _CRTAPI1 with __cdecl.
* 04-15-93 CFW Add _MB_CP_LOCK.
* 05-09-94 CFW Optimize for SBCS.
* 05-19-94 CFW Enable non-Win32.
*
*******************************************************************************/
#ifdef _MBCS
#include <mtdll.h>
#include <cruntime.h>
#include <string.h>
#include <mbdata.h>
#include <mbctype.h>
#include <mbstring.h>
/***
* _mbslen - Find length of MBCS string
*
*Purpose:
* Find the length of the MBCS string (in characters).
*
*Entry:
* unsigned char *s = string
*
*Exit:
* Returns the number of MBCS chars in the string
*
*Exceptions:
*
*******************************************************************************/
size_t __cdecl _mbslen(
const unsigned char *s
)
{
int n;
if (0 == __mbcodepage)
return strlen(s);
_mlock(_MB_CP_LOCK);
for (n = 0; *s; n++, s++) {
if (_ISLEADBYTE(*s)) {
if (*++s == '\0')
break;
}
}
_munlock(_MB_CP_LOCK);
return(n);
}
#endif /* _MBCS */