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 <limits.h> 41 #include <stdarg.h> 42 #include <stdio.h> 43 #include <stdlib.h> 44 #include <string.h> 45 #include <wchar.h> 46 #include "local.h" 47 #include "xlocale_private.h" 48 49 static int eofread(void *, char *, int); 50 51 static int 52 eofread(void *cookie, char *buf, int len) 53 { 54 55 return (0); 56 } 57 58 int 59 vswscanf_l(const wchar_t * __restrict str, locale_t locale, 60 const wchar_t * __restrict fmt, va_list ap) 61 { 62 static const mbstate_t initial; 63 mbstate_t mbs; 64 FILE f = FAKE_FILE; 65 char *mbstr; 66 size_t mlen; 67 int r; 68 const wchar_t *strp; 69 FIX_LOCALE(locale); 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 strp = str; 79 if ((mlen = wcsrtombs_l(mbstr, &strp, SIZE_T_MAX, &mbs, locale)) == (size_t)-1) { 80 free(mbstr); 81 return (EOF); 82 } 83 f._flags = __SRD; 84 f._bf._base = f._p = (unsigned char *)mbstr; 85 f._bf._size = f._r = mlen; 86 f._read = eofread; 87 r = __vfwscanf(&f, locale, fmt, ap); 88 free(mbstr); 89 90 return (r); 91 } 92 int 93 vswscanf(const wchar_t * __restrict str, const wchar_t * __restrict fmt, 94 va_list ap) 95 { 96 return vswscanf_l(str, __get_locale(), fmt, ap); 97 } 98