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 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 4. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * @(#)vsscanf.c 8.1 (Berkeley) 6/4/93 33 * $FreeBSD: src/lib/libc/stdio/vswscanf.c,v 1.6 2009/01/15 18:53:52 rdivacky Exp $ 34 * $DragonFly: src/lib/libc/stdio/vswscanf.c,v 1.3 2006/03/02 18:05:30 joerg Exp $ 35 */ 36 37 #include <limits.h> 38 #include <stdarg.h> 39 #include <stdio.h> 40 #include <stdlib.h> 41 #include <string.h> 42 #include <wchar.h> 43 #include "local.h" 44 #include "priv_stdio.h" 45 46 static int eofread(void *, char *, int); 47 48 static int 49 eofread(void *cookie __unused, char *buf __unused, int len __unused) 50 { 51 52 return (0); 53 } 54 55 int 56 vswscanf(const wchar_t * __restrict str, const wchar_t * __restrict fmt, 57 va_list ap) 58 { 59 static const mbstate_t initial; 60 mbstate_t mbs; 61 FILE f; 62 char *mbstr; 63 size_t mlen; 64 int r; 65 const wchar_t *strp; 66 67 /* 68 * XXX Convert the wide character string to multibyte, which 69 * __vfwscanf() will convert back to wide characters. 70 */ 71 if ((mbstr = malloc(wcslen(str) * MB_CUR_MAX + 1)) == NULL) 72 return (EOF); 73 mbs = initial; 74 strp = str; 75 if ((mlen = wcsrtombs(mbstr, &strp, SIZE_T_MAX, &mbs)) == (size_t)-1) { 76 free(mbstr); 77 return (EOF); 78 } 79 f.pub._fileno = -1; 80 f.pub._flags = __SRD; 81 f._bf._base = f.pub._p = (unsigned char *)mbstr; 82 f._bf._size = f.pub._r = mlen; 83 f._read = eofread; 84 f._ub._base = NULL; 85 f._lb._base = NULL; 86 memset(WCIO_GET(&f), 0, sizeof(struct wchar_io_data)); 87 r = __vfwscanf(&f, fmt, ap); 88 free(mbstr); 89 90 return (r); 91 } 92