[ust.git] / snprintf / mbrtowc_sb.c

/*	$OpenBSD: mbrtowc_sb.c,v 1.4 2005/11/27 20:03:06 cloder Exp $	*/
/*	$NetBSD: multibyte_sb.c,v 1.4 2003/08/07 16:43:04 agc Exp $	*/

/*
 * Copyright (c) 1991 The Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <errno.h>
#include <stdlib.h>
#include <wchar.h>

/*ARGSUSED*/
size_t
ust_safe_mbrtowc(wchar_t *pwc, const char *s, size_t n, mbstate_t *ps)
{

	/* pwc may be NULL */
	/* s may be NULL */
	/* ps appears to be unused */

	if (s == NULL)
		return 0;
	if (n == 0)
		return (size_t)-1;
	if (pwc)
		*pwc = (wchar_t)(unsigned char)*s;
	return (*s != '\0');
}
Commit	Line	Data
	1	/* $OpenBSD: mbrtowc_sb.c,v 1.4 2005/11/27 20:03:06 cloder Exp $ */
	2	/* $NetBSD: multibyte_sb.c,v 1.4 2003/08/07 16:43:04 agc Exp $ */
	3
	4	/*
	5	* Copyright (c) 1991 The Regents of the University of California.
	6	* All rights reserved.
	7	*
	8	* Redistribution and use in source and binary forms, with or without
	9	* modification, are permitted provided that the following conditions
	10	* are met:
	11	* 1. Redistributions of source code must retain the above copyright
	12	* notice, this list of conditions and the following disclaimer.
	13	* 2. Redistributions in binary form must reproduce the above copyright
	14	* notice, this list of conditions and the following disclaimer in the
	15	* documentation and/or other materials provided with the distribution.
	16	* 3. Neither the name of the University nor the names of its contributors
	17	* may be used to endorse or promote products derived from this software
	18	* without specific prior written permission.
	19	*
	20	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	21	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	22	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	23	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	24	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	25	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	26	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	27	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	28	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	29	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	30	* SUCH DAMAGE.
	31	*/
	32
	33	#include <errno.h>
	34	#include <stdlib.h>
	35	#include <wchar.h>
	36
	37	/ARGSUSED/
	38	size_t
	39	ust_safe_mbrtowc(wchar_t pwc, const char s, size_t n, mbstate_t *ps)
	40	{
	41
	42	/* pwc may be NULL */
	43	/* s may be NULL */
	44	/* ps appears to be unused */
	45
	46	if (s == NULL)
	47	return 0;
	48	if (n == 0)
	49	return (size_t)-1;
	50	if (pwc)
	51	pwc = (wchar_t)(unsigned char)s;
	52	return (*s != '\0');
	53	}