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
eofread(void * cookie __unused,char * buf __unused,int len __unused)54 eofread(void *cookie __unused, char *buf __unused, int len __unused)
55 {
56
57 return (0);
58 }
59
60 int
vswscanf_l(const wchar_t * __restrict str,locale_t locale,const wchar_t * __restrict fmt,va_list ap)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
vswscanf(const wchar_t * __restrict str,const wchar_t * __restrict fmt,va_list ap)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