1 /*- 2 * Copyright (c) 1990, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Donn Seeley at UUNET Technologies, Inc. 7 * 8 * Copyright (c) 2011 The FreeBSD Foundation 9 * All rights reserved. 10 * Portions of this software were developed by David Chisnall 11 * under sponsorship from the FreeBSD Foundation. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 3. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * @(#)vsscanf.c 8.1 (Berkeley) 6/4/93 38 * $FreeBSD: head/lib/libc/stdio/vswscanf.c 249808 2013-04-23 13:33:13Z emaste $ 39 */ 40 41 #include <limits.h> 42 #include <pthread.h> /* for FAKE_FILE PTHREAD_MUTEX_INITIALIZER */ 43 #include <stdarg.h> 44 #include <stdio.h> 45 #include <stdlib.h> 46 #include <string.h> 47 #include <wchar.h> 48 #include "local.h" 49 #include "xlocale_private.h" 50 51 static int eofread(void *, char *, int); 52 53 static int 54 eofread(void *cookie __unused, char *buf __unused, int len __unused) 55 { 56 57 return (0); 58 } 59 60 int 61 vswscanf_l(const wchar_t * __restrict str, locale_t locale, 62 const wchar_t * __restrict fmt, va_list ap) 63 { 64 static const mbstate_t initial; 65 mbstate_t mbs; 66 FILE f = FAKE_FILE; 67 char *mbstr; 68 size_t mlen; 69 int r; 70 const wchar_t *strp; 71 FIX_LOCALE(locale); 72 73 /* 74 * XXX Convert the wide character string to multibyte, which 75 * __vfwscanf() will convert back to wide characters. 76 */ 77 if ((mbstr = malloc(wcslen(str) * MB_CUR_MAX + 1)) == NULL) 78 return (EOF); 79 mbs = initial; 80 strp = str; 81 if ((mlen = wcsrtombs_l(mbstr, &strp, SIZE_T_MAX, &mbs, locale)) == (size_t)-1) { 82 free(mbstr); 83 return (EOF); 84 } 85 f.pub._flags = __SRD; 86 f._bf._base = f.pub._p = (unsigned char *)mbstr; 87 f._bf._size = f.pub._r = mlen; 88 f._read = eofread; 89 r = __vfwscanf(&f, locale, fmt, ap); 90 free(mbstr); 91 92 return (r); 93 } 94 int 95 vswscanf(const wchar_t * __restrict str, const wchar_t * __restrict fmt, 96 va_list ap) 97 { 98 return vswscanf_l(str, __get_locale(), fmt, ap); 99 } 100