1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
|
/* $OpenBSD: vswscanf.c,v 1.3 2015/08/31 02:53:57 guenther Exp $ */
/*-
* Copyright (c) 1990, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Donn Seeley at UUNET Technologies, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <limits.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <wchar.h>
#include "local.h"
static int eofread(void *, char *, int);
static int
eofread(void *cookie, char *buf, int len)
{
return (0);
}
int
vswscanf(const wchar_t * __restrict str, const wchar_t * __restrict fmt,
__va_list ap)
{
mbstate_t mbs;
FILE f;
struct __sfileext fext;
char *mbstr;
size_t len, mlen;
int r;
const wchar_t *strp;
/*
* XXX Convert the wide character string to multibyte, which
* __vfwscanf() will convert back to wide characters.
*/
len = wcslen(str) * MB_CUR_MAX;
if ((mbstr = malloc(len + 1)) == NULL)
return (EOF);
bzero(&mbs, sizeof(mbs));
strp = str;
if ((mlen = wcsrtombs(mbstr, &strp, len, &mbs)) == (size_t)-1) {
free(mbstr);
return (EOF);
}
if (mlen == len)
mbstr[len] = '\0';
_FILEEXT_SETUP(&f, &fext);
f._flags = __SRD;
f._bf._base = f._p = (unsigned char *)mbstr;
f._bf._size = f._r = mlen;
f._read = eofread;
f._lb._base = NULL;
r = __vfwscanf(&f, fmt, ap);
free(mbstr);
return (r);
}
DEF_STRONG(vswscanf);
|
