1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Donn Seeley at UUNET Technologies, Inc. 9 * 10 * Copyright (c) 2011 The FreeBSD Foundation 11 * 12 * Portions of this software were developed by David Chisnall 13 * under sponsorship from the FreeBSD Foundation. 14 * 15 * Redistribution and use in source and binary forms, with or without 16 * modification, are permitted provided that the following conditions 17 * are met: 18 * 1. Redistributions of source code must retain the above copyright 19 * notice, this list of conditions and the following disclaimer. 20 * 2. Redistributions in binary form must reproduce the above copyright 21 * notice, this list of conditions and the following disclaimer in the 22 * documentation and/or other materials provided with the distribution. 23 * 3. 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 <sys/cdefs.h> 41 #if 0 42 #if defined(LIBC_SCCS) && !defined(lint) 43 static char sccsid[] = "@(#)vsscanf.c 8.1 (Berkeley) 6/4/93"; 44 #endif /* LIBC_SCCS and not lint */ 45 __FBSDID("FreeBSD: src/lib/libc/stdio/vsscanf.c,v 1.11 2002/08/21 16:19:57 mike Exp "); 46 #endif 47 #include <limits.h> 48 #include <stdarg.h> 49 #include <stdio.h> 50 #include <stdlib.h> 51 #include <string.h> 52 #include <wchar.h> 53 #include "local.h" 54 #include "xlocale_private.h" 55 56 static int eofread(void *, char *, int); 57 58 static int 59 eofread(void *cookie, char *buf, int len) 60 { 61 62 return (0); 63 } 64 65 int 66 vswscanf_l(const wchar_t * __restrict str, locale_t locale, 67 const wchar_t * __restrict fmt, va_list ap) 68 { 69 static const mbstate_t initial; 70 mbstate_t mbs; 71 FILE f = FAKE_FILE; 72 char *mbstr; 73 size_t mlen; 74 int r; 75 const wchar_t *strp; 76 FIX_LOCALE(locale); 77 78 /* 79 * XXX Convert the wide character string to multibyte, which 80 * __vfwscanf() will convert back to wide characters. 81 */ 82 if ((mbstr = malloc(wcslen(str) * MB_CUR_MAX + 1)) == NULL) 83 return (EOF); 84 mbs = initial; 85 strp = str; 86 if ((mlen = wcsrtombs_l(mbstr, &strp, SIZE_T_MAX, &mbs, locale)) == (size_t)-1) { 87 free(mbstr); 88 return (EOF); 89 } 90 f._flags = __SRD; 91 f._bf._base = f._p = (unsigned char *)mbstr; 92 f._bf._size = f._r = mlen; 93 f._read = eofread; 94 r = __vfwscanf(&f, locale, fmt, ap); 95 free(mbstr); 96 97 return (r); 98 } 99 int 100 vswscanf(const wchar_t * __restrict str, const wchar_t * __restrict fmt, 101 va_list ap) 102 { 103 return vswscanf_l(str, __get_locale(), fmt, ap); 104 } 105