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
38 #include <sys/cdefs.h>
39 #if 0
40 #if defined(LIBC_SCCS) && !defined(lint)
41 static char sccsid[] = "@(#)vsscanf.c 8.1 (Berkeley) 6/4/93";
42 #endif /* LIBC_SCCS and not lint */
43 __FBSDID("FreeBSD: src/lib/libc/stdio/vsscanf.c,v 1.11 2002/08/21 16:19:57 mike Exp ");
44 #endif
45 __FBSDID("$FreeBSD: stable/10/lib/libc/stdio/vswscanf.c 249808 2013-04-23 13:33:13Z emaste $");
46
47 #include <limits.h>
48 #include <stdarg.h>
49 #include <stdio.h>
50 #include <stdlib.h>
51 #include <string.h>
52 #include <wchar.h>
53 #include "local.h"
54 #include "xlocale_private.h"
55
56 static int eofread(void *, char *, int);
57
58 static int
eofread(void * cookie,char * buf,int len)59 eofread(void *cookie, char *buf, int len)
60 {
61
62 return (0);
63 }
64
65 int
vswscanf_l(const wchar_t * __restrict str,locale_t locale,const wchar_t * __restrict fmt,va_list ap)66 vswscanf_l(const wchar_t * __restrict str, locale_t locale,
67 const wchar_t * __restrict fmt, va_list ap)
68 {
69 static const mbstate_t initial;
70 mbstate_t mbs;
71 FILE f = FAKE_FILE;
72 char *mbstr;
73 size_t mlen;
74 int r;
75 const wchar_t *strp;
76 FIX_LOCALE(locale);
77
78 /*
79 * XXX Convert the wide character string to multibyte, which
80 * __vfwscanf() will convert back to wide characters.
81 */
82 if ((mbstr = malloc(wcslen(str) * MB_CUR_MAX + 1)) == NULL)
83 return (EOF);
84 mbs = initial;
85 strp = str;
86 if ((mlen = wcsrtombs_l(mbstr, &strp, SIZE_T_MAX, &mbs, locale)) == (size_t)-1) {
87 free(mbstr);
88 return (EOF);
89 }
90 f._flags = __SRD;
91 f._bf._base = f._p = (unsigned char *)mbstr;
92 f._bf._size = f._r = mlen;
93 f._read = eofread;
94 r = __vfwscanf(&f, locale, fmt, ap);
95 free(mbstr);
96
97 return (r);
98 }
99 int
vswscanf(const wchar_t * __restrict str,const wchar_t * __restrict fmt,va_list ap)100 vswscanf(const wchar_t * __restrict str, const wchar_t * __restrict fmt,
101 va_list ap)
102 {
103 return vswscanf_l(str, __get_locale(), fmt, ap);
104 }
105