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 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35
36 FreeBSD: src/lib/libc/stdio/vswscanf.c,v 1.3 2004/04/07 09:55:05 tjr Exp
37 NetBSD: vswscanf.c,v 1.3 2005/12/02 13:51:22 yamt Exp
38 */
39 #include <LibConfig.h>
40 #include <sys/EfiCdefs.h>
41
42 #include <limits.h>
43 #include <stdarg.h>
44 #include <stdio.h>
45 #include <stdlib.h>
46 #include <string.h>
47 #include <wchar.h>
48 #include <sys/types.h>
49 #include "reentrant.h"
50 #include "local.h"
51
52 static int eofread(void *, char *, int);
53
54 static int
55 /*ARGSUSED*/
eofread(void * cookie,char * buf,int len)56 eofread(void *cookie, char *buf, int len)
57 {
58 return (0);
59 }
60
61 int
vswscanf(const wchar_t * __restrict str,const wchar_t * __restrict fmt,va_list ap)62 vswscanf(
63 const wchar_t * __restrict str,
64 const wchar_t * __restrict fmt,
65 va_list ap
66 )
67 {
68 static const mbstate_t initial = { 0 };
69 mbstate_t mbs;
70 FILE f;
71 char *mbstr;
72 size_t mlen;
73 int r;
74 const wchar_t *rstr = str;
75 struct __sfileext fext = { { 0 } };
76
77 /*
78 * XXX Convert the wide character string to multibyte, which
79 * __vfwscanf() will convert back to wide characters.
80 */
81 if ((mbstr = malloc(wcslen(str) * MB_CUR_MAX + 1)) == NULL)
82 return (EOF);
83 mbs = initial;
84 if ((mlen = wcsrtombs(mbstr, &rstr, SIZE_T_MAX, &mbs)) == (size_t)-1) {
85 free(mbstr);
86 return (EOF);
87 }
88 _FILEEXT_SETUP(&f, &fext);
89 f._file = -1;
90 f._flags = __SRD;
91 f._bf._base = f._p = (unsigned char *)mbstr;
92 f._bf._size = f._r = (int)mlen;
93 f._read = eofread;
94 _UB(&f)._base = NULL;
95 f._lb._base = NULL;
96 r = __vfwscanf_unlocked(&f, fmt, ap);
97 free(mbstr);
98
99 return (r);
100 }
101