nativelibc/string/wcrtomb.c

/*	A part of the Native C Library for Windows NT
	Copyright 2007-2015 PC GO Ld.

	This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

	This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
*/

#include <wchar.h>
#include <windows.h>
#include <nt.h>
#include <errno.h>
#include <limits.h>

static mbstate_t state_private = 0;

size_t wcrtomb(char *s, wchar_t wc, mbstate_t *ps) {
	//char buffer[MB_CUR_MAX];
	char buffer[4];
	unsigned long int r;
/*
	if(!s) {
		s = buffer;
		wc = 0;
	}*/
	if(!ps) ps = &state_private;
	long int status = RtlUnicodeToMultiByteN(buffer, sizeof buffer, &r, &wc, MB_LEN_MAX);
	if(status < 0) {
		errno = EILSEQ;
		return (size_t)-1;
	}
	//return r;
	if(*ps == r) return r;
	s[*ps] = buffer[*ps];
	return ++(*ps);
}