mbsrchr.cpp File Reference

#include <corecrt_internal_mbstring.h>
#include <locale.h>
#include <stddef.h>
#include <string.h>

Include dependency graph for mbsrchr.cpp:

Go to the source code of this file.

Functions
_CONST_RETURN unsigned char *__cdecl	_mbsrchr_l (const unsigned char *str, unsigned int c, _locale_t plocinfo)
_CONST_RETURN unsigned char *__cdecl	_mbsrchr (const unsigned char *str, unsigned int c)

Function Documentation

_mbsrchr()

_CONST_RETURN unsigned char *__cdecl _mbsrchr	(	const unsigned char *	str,
		unsigned int	c
	)

Definition at line 77 of file mbsrchr.cpp.

{
    return _mbsrchr_l(str, c, nullptr);
}

_mbsrchr_l()

_CONST_RETURN unsigned char *__cdecl _mbsrchr_l	(	const unsigned char *	str,
		unsigned int	c,
		_locale_t	plocinfo
	)

Definition at line 42 of file mbsrchr.cpp.

{
        char *r = nullptr;
        unsigned int cc;
        _LocaleUpdate _loc_update(plocinfo);
 
        /* validation section */
        _VALIDATE_RETURN(str != nullptr, EINVAL, 0);
 
        if (_loc_update.GetLocaleT()->mbcinfo->ismbcodepage == 0)
            return (_CONST_RETURN unsigned char *)strrchr((const char *)str, c);
 
        do {
            cc = *str;
            if ( _ismbblead_l(cc, _loc_update.GetLocaleT()) ) {
                if(*++str) {
                    if (c == ((cc<<8)|*str))
                        r = (char *)str - 1;
                }
                else if(!r)
                    /* return pointer to '\0' */
                    r = (char *)str;
            }
            else if (c == cc)
                r = (char *)str;
        }
        while (*str++);
 
        return((_CONST_RETURN unsigned char *)r);
}

Referenced by _mbsrchr().