vswscanf.c revision 103856
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 * 3. All advertising materials mentioning features or use of this software 17103856Stjr * must display the following acknowledgement: 18103856Stjr * This product includes software developed by the University of 19103856Stjr * California, Berkeley and its contributors. 20103856Stjr * 4. Neither the name of the University nor the names of its contributors 21103856Stjr * may be used to endorse or promote products derived from this software 22103856Stjr * without specific prior written permission. 23103856Stjr * 24103856Stjr * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25103856Stjr * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26103856Stjr * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27103856Stjr * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28103856Stjr * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29103856Stjr * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30103856Stjr * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31103856Stjr * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32103856Stjr * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33103856Stjr * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34103856Stjr * SUCH DAMAGE. 35103856Stjr */ 36103856Stjr 37103856Stjr#include <sys/cdefs.h> 38103856Stjr#if 0 39103856Stjr#if defined(LIBC_SCCS) && !defined(lint) 40103856Stjrstatic char sccsid[] = "@(#)vsscanf.c 8.1 (Berkeley) 6/4/93"; 41103856Stjr#endif /* LIBC_SCCS and not lint */ 42103856Stjr__FBSDID("FreeBSD: src/lib/libc/stdio/vsscanf.c,v 1.11 2002/08/21 16:19:57 mike Exp "); 43103856Stjr#endif 44103856Stjr__FBSDID("$FreeBSD: head/lib/libc/stdio/vswscanf.c 103856 2002-09-23 12:40:06Z tjr $"); 45103856Stjr 46103856Stjr#include <limits.h> 47103856Stjr#include <stdarg.h> 48103856Stjr#include <stdio.h> 49103856Stjr#include <stdlib.h> 50103856Stjr#include <string.h> 51103856Stjr#include <wchar.h> 52103856Stjr#include "local.h" 53103856Stjr 54103856Stjrstatic int eofread(void *, char *, int); 55103856Stjr 56103856Stjrstatic int 57103856Stjreofread(void *cookie, char *buf, int len) 58103856Stjr{ 59103856Stjr 60103856Stjr return (0); 61103856Stjr} 62103856Stjr 63103856Stjrint 64103856Stjrvswscanf(const wchar_t * __restrict str, const wchar_t * __restrict fmt, 65103856Stjr va_list ap) 66103856Stjr{ 67103856Stjr FILE f; 68103856Stjr mbstate_t mbs; 69103856Stjr struct __sFILEX ext; 70103856Stjr char *mbstr; 71103856Stjr size_t mlen; 72103856Stjr int r; 73103856Stjr 74103856Stjr /* 75103856Stjr * XXX Convert the wide character string to multibyte, which 76103856Stjr * __vfwscanf() will convert back to wide characters. 77103856Stjr */ 78103856Stjr if ((mbstr = malloc(wcslen(str) * MB_CUR_MAX + 1)) == NULL) 79103856Stjr return (EOF); 80103856Stjr memset(&mbs, 0, sizeof(mbs)); 81103856Stjr if ((mlen = wcsrtombs(mbstr, &str, SIZE_T_MAX, &mbs)) == (size_t)-1) { 82103856Stjr free(mbstr); 83103856Stjr return (EOF); 84103856Stjr } 85103856Stjr f._file = -1; 86103856Stjr f._flags = __SRD; 87103856Stjr f._bf._base = f._p = (unsigned char *)mbstr; 88103856Stjr f._bf._size = f._r = mlen; 89103856Stjr f._read = eofread; 90103856Stjr f._ub._base = NULL; 91103856Stjr f._lb._base = NULL; 92103856Stjr f._extra = &ext; 93103856Stjr INITEXTRA(&f); 94103856Stjr r = __vfwscanf(&f, fmt, ap); 95103856Stjr free(mbstr); 96103856Stjr 97103856Stjr return (r); 98103856Stjr} 99