vswscanf.c revision 187302
1103856Stjr/*- 2103856Stjr * Copyright (c) 1990, 1993 3103856Stjr * The Regents of the University of California. All rights reserved. 4103856Stjr * 5103856Stjr * This code is derived from software contributed to Berkeley by 6103856Stjr * Donn Seeley at UUNET Technologies, Inc. 7103856Stjr * 8103856Stjr * Redistribution and use in source and binary forms, with or without 9103856Stjr * modification, are permitted provided that the following conditions 10103856Stjr * are met: 11103856Stjr * 1. Redistributions of source code must retain the above copyright 12103856Stjr * notice, this list of conditions and the following disclaimer. 13103856Stjr * 2. Redistributions in binary form must reproduce the above copyright 14103856Stjr * notice, this list of conditions and the following disclaimer in the 15103856Stjr * documentation and/or other materials provided with the distribution. 16103856Stjr * 4. Neither the name of the University nor the names of its contributors 17103856Stjr * may be used to endorse or promote products derived from this software 18103856Stjr * without specific prior written permission. 19103856Stjr * 20103856Stjr * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21103856Stjr * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22103856Stjr * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23103856Stjr * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24103856Stjr * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25103856Stjr * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26103856Stjr * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27103856Stjr * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28103856Stjr * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29103856Stjr * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30103856Stjr * SUCH DAMAGE. 31103856Stjr */ 32103856Stjr 33103856Stjr#include <sys/cdefs.h> 34103856Stjr#if 0 35103856Stjr#if defined(LIBC_SCCS) && !defined(lint) 36103856Stjrstatic char sccsid[] = "@(#)vsscanf.c 8.1 (Berkeley) 6/4/93"; 37103856Stjr#endif /* LIBC_SCCS and not lint */ 38103856Stjr__FBSDID("FreeBSD: src/lib/libc/stdio/vsscanf.c,v 1.11 2002/08/21 16:19:57 mike Exp "); 39103856Stjr#endif 40103856Stjr__FBSDID("$FreeBSD: head/lib/libc/stdio/vswscanf.c 187302 2009-01-15 18:53:52Z rdivacky $"); 41103856Stjr 42103856Stjr#include <limits.h> 43103856Stjr#include <stdarg.h> 44103856Stjr#include <stdio.h> 45103856Stjr#include <stdlib.h> 46103856Stjr#include <string.h> 47103856Stjr#include <wchar.h> 48103856Stjr#include "local.h" 49103856Stjr 50103856Stjrstatic int eofread(void *, char *, int); 51103856Stjr 52103856Stjrstatic int 53103856Stjreofread(void *cookie, char *buf, int len) 54103856Stjr{ 55103856Stjr 56103856Stjr return (0); 57103856Stjr} 58103856Stjr 59103856Stjrint 60103856Stjrvswscanf(const wchar_t * __restrict str, const wchar_t * __restrict fmt, 61103856Stjr va_list ap) 62103856Stjr{ 63128002Stjr static const mbstate_t initial; 64128002Stjr mbstate_t mbs; 65103856Stjr FILE f; 66103856Stjr char *mbstr; 67103856Stjr size_t mlen; 68103856Stjr int r; 69187302Srdivacky const wchar_t *strp; 70103856Stjr 71103856Stjr /* 72103856Stjr * XXX Convert the wide character string to multibyte, which 73103856Stjr * __vfwscanf() will convert back to wide characters. 74103856Stjr */ 75103856Stjr if ((mbstr = malloc(wcslen(str) * MB_CUR_MAX + 1)) == NULL) 76103856Stjr return (EOF); 77128002Stjr mbs = initial; 78187302Srdivacky strp = str; 79187302Srdivacky if ((mlen = wcsrtombs(mbstr, &strp, SIZE_T_MAX, &mbs)) == (size_t)-1) { 80103856Stjr free(mbstr); 81103856Stjr return (EOF); 82103856Stjr } 83103856Stjr f._file = -1; 84103856Stjr f._flags = __SRD; 85103856Stjr f._bf._base = f._p = (unsigned char *)mbstr; 86103856Stjr f._bf._size = f._r = mlen; 87103856Stjr f._read = eofread; 88103856Stjr f._ub._base = NULL; 89103856Stjr f._lb._base = NULL; 90178287Sjhb f._orientation = 0; 91178287Sjhb memset(&f._mbstate, 0, sizeof(mbstate_t)); 92103856Stjr r = __vfwscanf(&f, fmt, ap); 93103856Stjr free(mbstr); 94103856Stjr 95103856Stjr return (r); 96103856Stjr} 97