mbrtowc.c File Reference

#include <precomp.h>
#include <locale.h>

Include dependency graph for mbrtowc.c:

Go to the source code of this file.

Functions
size_t CDECL	mbrtowc (wchar_t *dst, const char *str, size_t n, mbstate_t *state)

Function Documentation

mbrtowc()

size_t CDECL mbrtowc	(	wchar_t *	dst,
		const char *	str,
		size_t	n,
		mbstate_t *	state
	)

Definition at line 28 of file mbrtowc.c.

{
    mbstate_t s = (state ? *state : 0);
    char tmpstr[2];
    int len = 0;
 
    if(dst)
        *dst = 0;
 
    if(!n || !str || !*str)
        return 0;
 
    if(___mb_cur_max_func() == 1) {
        tmpstr[len++] = *str;
    }else if(!s && isleadbyte((unsigned char)*str)) {
        if(n == 1) {
            s = (unsigned char)*str;
            len = -2;
        }else {
            tmpstr[0] = str[0];
            tmpstr[1] = str[1];
            len = 2;
        }
    }else if(!s) {
        tmpstr[len++] = *str;
    }else {
        tmpstr[0] = s;
        tmpstr[1] = *str;
        len = 2;
        s = 0;
    }
 
    if(len > 0) {
        if(!MultiByteToWideChar(___lc_codepage_func(), 0, tmpstr, len, dst, dst ? 1 : 0))
            len = -1;
    }
 
    if(state)
        *state = s;
    return len;
}