1 /* $NetBSD: vswscanf.c,v 1.1 2005/05/14 23:51:02 christos Exp $ */ 2 /* $DragonFly: src/lib/libc/stdio/vswscanf.c,v 1.3 2006/03/02 18:05:30 joerg Exp $ */ 3 4 /*- 5 * Copyright (c) 1990, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * Donn Seeley at UUNET Technologies, Inc. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the University of 22 * California, Berkeley and its contributors. 23 * 4. 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 47 #include "local.h" 48 #include "priv_stdio.h" 49 50 static int eofread(void *, char *, int); 51 52 static int 53 /*ARGSUSED*/ 54 eofread(void *cookie __unused, char *buf __unused, int len __unused) 55 { 56 57 return (0); 58 } 59 60 int 61 vswscanf(const wchar_t * __restrict str, const wchar_t * __restrict fmt, 62 va_list ap) 63 { 64 static const mbstate_t initial; 65 mbstate_t mbs; 66 FILE f; 67 char *mbstr; 68 size_t mlen; 69 int r; 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 if ((mlen = wcsrtombs(mbstr, (const wchar_t ** __restrict)&str, 79 SIZE_T_MAX, &mbs)) == (size_t)-1) { 80 free(mbstr); 81 return (EOF); 82 } 83 f.pub._fileno = -1; 84 f.pub._flags = __SRD; 85 f._bf._base = f.pub._p = (unsigned char *)mbstr; 86 f._bf._size = f.pub._r = mlen; 87 f._read = eofread; 88 f._ub._base = NULL; 89 f._lb._base = NULL; 90 f._up = NULL; 91 f.fl_mutex = PTHREAD_MUTEX_INITIALIZER; 92 f.fl_owner = NULL; 93 f.fl_count = 0; 94 memset(WCIO_GET(&f), 0, sizeof(struct wchar_io_data)); 95 r = __vfwscanf_unlocked(&f, fmt, ap); 96 free(mbstr); 97 98 return (r); 99 } 100