68 lines
1.5 KiB
C
68 lines
1.5 KiB
C
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/***
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*mbsrchr.c - Search for last occurence of character (MBCS)
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*
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* Copyright (c) 1985-1992, Microsoft Corporation. All rights reserved.
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*
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*Purpose:
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* Search for last occurence of character (MBCS)
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*
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*Revision History:
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* 11-19-92 KRS Ported from 16-bit sources.
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* 08-20-93 CFW Change short params to int for 32-bit tree.
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*
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*******************************************************************************/
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#ifdef _MBCS
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#include <cruntime.h>
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#include <mbdata.h>
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#include <mbctype.h>
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#include <mbstring.h>
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#include <stddef.h>
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/***
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* _mbsrchr - Search for last occurence of character (MBCS)
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*
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*Purpose:
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* Find the last occurrence of the specified character in
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* the supplied string. Handles MBCS chars/strings correctly.
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*
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*Entry:
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* unsigned char *str = string to search in
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* unsigned int c = character to search for
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*
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*Exit:
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* returns pointer to last occurrence of c in str
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* returns NULL if c not found
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*
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*Exceptions:
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*
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*******************************************************************************/
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unsigned char * _CRTAPI1 _mbsrchr(
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const unsigned char *str,
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unsigned int c
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)
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{
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char *r = NULL;
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unsigned int cc;
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do {
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cc = *str;
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if (_ISLEADBYTE(cc)) {
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if(*++str) {
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if (c == ((cc<<8)|*str))
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r = (char *)str - 1;
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}
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else if(!r)
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/* return pointer to '\0' */
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r = (char *)str;
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}
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else if (c == cc)
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r = (char *)str;
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}
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while (*str++);
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return(r);
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}
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#endif /* _MBCS */
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