63 lines
1.5 KiB
C
63 lines
1.5 KiB
C
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/***
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*wcsrchr.c - find last occurrence of wchar_t character in wide string
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*
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* Copyright (c) 1985-2001, Microsoft Corporation. All rights reserved.
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*
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*Purpose:
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* defines wcsrchr() - find the last occurrence of a given character
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* in a string (wide-characters).
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*
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*Revision History:
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* 09-09-91 ETC Created from strrchr.c.
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* 04-07-92 KRS Updated and ripped out _INTL switches.
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* 04-06-93 SKS Replace _CRTAPI* with __cdecl
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* 02-07-94 CFW POSIXify.
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*
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*******************************************************************************/
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#ifndef _POSIX_
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#include <cruntime.h>
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#include <string.h>
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/***
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*wchar_t *wcsrchr(string, ch) - find last occurrence of ch in wide string
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*
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*Purpose:
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* Finds the last occurrence of ch in string. The terminating
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* null character is used as part of the search (wide-characters).
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*
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*Entry:
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* wchar_t *string - string to search in
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* wchar_t ch - character to search for
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*
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*Exit:
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* returns a pointer to the last occurrence of ch in the given
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* string
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* returns NULL if ch does not occurr in the string
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*
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*Exceptions:
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*
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*******************************************************************************/
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wchar_t * __cdecl wcsrchr (
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const wchar_t * string,
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wchar_t ch
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)
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{
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wchar_t *start = (wchar_t *)string;
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while (*string++) /* find end of string */
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;
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/* search towards front */
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while (--string != start && *string != (wchar_t)ch)
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;
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if (*string == (wchar_t)ch) /* wchar_t found ? */
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return( (wchar_t *)string );
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return(NULL);
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}
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#endif /* _POSIX_ */
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