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Commit	Line	Data
	1	/* $NetBSD: vswscanf.c,v 1.1 2005/05/14 23:51:02 christos Exp $ */
	2	/* $DragonFly: src/lib/libc/stdio/vswscanf.c,v 1.3 2006/03/02 18:05:30 joerg Exp $ */
	3
	4	/*-
	5	* Copyright (c) 1990, 1993
	6	* The Regents of the University of California. All rights reserved.
	7	*
	8	* This code is derived from software contributed to Berkeley by
	9	* Donn Seeley at UUNET Technologies, Inc.
	10	*
	11	* Redistribution and use in source and binary forms, with or without
	12	* modification, are permitted provided that the following conditions
	13	* are met:
	14	* 1. Redistributions of source code must retain the above copyright
	15	* notice, this list of conditions and the following disclaimer.
	16	* 2. Redistributions in binary form must reproduce the above copyright
	17	* notice, this list of conditions and the following disclaimer in the
	18	* documentation and/or other materials provided with the distribution.
	19	* 3. All advertising materials mentioning features or use of this software
	20	* must display the following acknowledgement:
	21	* This product includes software developed by the University of
	22	* California, Berkeley and its contributors.
	23	* 4. Neither the name of the University nor the names of its contributors
	24	* may be used to endorse or promote products derived from this software
	25	* without specific prior written permission.
	26	*
	27	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	28	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	29	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	30	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	31	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	32	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	33	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	34	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	35	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	36	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	37	* SUCH DAMAGE.
	38	*/
	39
	40	#include <limits.h>
	41	#include <stdarg.h>
	42	#include <stdio.h>
	43	#include <stdlib.h>
	44	#include <string.h>
	45	#include <wchar.h>
	46
	47	#include "local.h"
	48	#include "priv_stdio.h"
	49
	50	static int eofread(void , char , int);
	51
	52	static int
	53	/ARGSUSED/
	54	eofread(void cookie __unused, char buf __unused, int len __unused)
	55	{
	56
	57	return (0);
	58	}
	59
	60	int
	61	vswscanf(const wchar_t * __restrict str, const wchar_t * __restrict fmt,
	62	va_list ap)
	63	{
	64	static const mbstate_t initial;
	65	mbstate_t mbs;
	66	FILE f;
	67	char *mbstr;
	68	size_t mlen;
	69	int r;
	70
	71	/*
	72	* XXX Convert the wide character string to multibyte, which
	73	* __vfwscanf() will convert back to wide characters.
	74	*/
	75	if ((mbstr = malloc(wcslen(str) * MB_CUR_MAX + 1)) == NULL)
	76	return (EOF);
	77	mbs = initial;
	78	if ((mlen = wcsrtombs(mbstr, (const wchar_t ** __restrict)&str,
	79	SIZE_T_MAX, &mbs)) == (size_t)-1) {
	80	free(mbstr);
	81	return (EOF);
	82	}
	83	f.pub._fileno = -1;
	84	f.pub._flags = __SRD;
	85	f._bf._base = f.pub._p = (unsigned char *)mbstr;
	86	f._bf._size = f.pub._r = mlen;
	87	f._read = eofread;
	88	f._ub._base = NULL;
	89	f._lb._base = NULL;
	90	f._up = NULL;
	91	f.fl_mutex = PTHREAD_MUTEX_INITIALIZER;
	92	f.fl_owner = NULL;
	93	f.fl_count = 0;
	94	memset(WCIO_GET(&f), 0, sizeof(struct wchar_io_data));
	95	r = __vfwscanf_unlocked(&f, fmt, ap);
	96	free(mbstr);
	97
	98	return (r);
	99	}