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/***
* mbschr.c - Search MBCS string for character
*
* Copyright (c) 1985-1993, Microsoft Corporation. All rights reserved.
*
*Purpose:
* Search MBCS string for a character
*
*Revision History:
* 11-19-92 KRS Ported from 16-bit sources.
* 05-12-93 KRS Fix handling of c=='\0'.
* 08-20-93 CFW Change param type to int, use new style param declarators.
*
*******************************************************************************/
#ifdef _MBCS
#include <cruntime.h>
#include <mbdata.h>
#include <mbctype.h>
#include <mbstring.h>
#include <stddef.h>
/***
* _mbschr - Search MBCS string for character
*
*Purpose:
* Search the given string for the specified character.
* MBCS characters are handled correctly.
*
*Entry:
* unsigned char *string = string to search
* int c = character to search for
*
*Exit:
* returns a pointer to the first occurence of the specified char
* within the string.
*
* returns NULL if the character is not found n the string.
*
*Exceptions:
*
*******************************************************************************/
unsigned char * _CRTAPI1 _mbschr(
const unsigned char *string,
unsigned int c
)
{
unsigned short cc;
for (; (cc = *string); string++) {
if (_ISLEADBYTE(cc)) {
if (*++string == '\0')
return NULL; /* error */
if ( c == (unsigned int)((cc << 8) | *string) ) /* DBCS match */
return (unsigned char *)(string - 1);
}
else if (c == (unsigned int)cc)
break; /* SBCS match */
}
if (c == (unsigned int)cc) /* check for SBCS match--handles NUL char */
return (unsigned char *)(string);
return NULL;
}
#endif /* _MBCS */
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