windows-nt/Source/XPSP1/NT/base/crts/crtw32/string/wcslen.c
2020-09-26 16:20:57 +08:00

52 lines
1.2 KiB
C

/***
*wcslen.c - contains wcslen() routine
*
* Copyright (c) 1985-2001, Microsoft Corporation. All rights reserved.
*
*Purpose:
* wcslen returns the length of a null-terminated wide-character string,
* not including the null wchar_t itself.
*
*Revision History:
* 09-09-91 ETC Created from strlen.c.
* 04-07-92 KRS Updated and ripped out _INTL switches.
* 04-06-93 SKS Replace _CRTAPI* with __cdecl
* 02-07-94 CFW POSIXify.
*
*******************************************************************************/
#ifndef _POSIX_
#include <cruntime.h>
#include <string.h>
/***
*wcslen - return the length of a null-terminated wide-character string
*
*Purpose:
* Finds the length in wchar_t's of the given string, not including
* the final null wchar_t (wide-characters).
*
*Entry:
* const wchar_t * wcs - string whose length is to be computed
*
*Exit:
* length of the string "wcs", exclusive of the final null wchar_t
*
*Exceptions:
*
*******************************************************************************/
size_t __cdecl wcslen (
const wchar_t * wcs
)
{
const wchar_t *eos = wcs;
while( *eos++ ) ;
return( (size_t)(eos - wcs - 1) );
}
#endif /* _POSIX_ */