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
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
|
/*-
* Copyright (c) 2002-2004 Tim J. Robbins.
* All rights reserved.
*
* Copyright (c) 2011 The FreeBSD Foundation
* All rights reserved.
* Portions of this software were developed by David Chisnall
* under sponsorship from the FreeBSD Foundation.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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 <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "namespace.h"
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <wchar.h>
#include "un-namespace.h"
#include "libc_private.h"
#include "local.h"
#include "mblocal.h"
#include "xlocale_private.h"
/*
* MT-safe version.
*/
wint_t
fgetwc_l(FILE *fp, locale_t locale)
{
wint_t r;
FIX_LOCALE(locale);
FLOCKFILE(fp);
ORIENT(fp, 1);
r = __fgetwc(fp, locale);
FUNLOCKFILE(fp);
return (r);
}
wint_t
fgetwc(FILE *fp)
{
return fgetwc_l(fp, __get_locale());
}
/*
* Internal (non-MPSAFE) version of fgetwc(). This version takes an
* mbstate_t argument specifying the initial conversion state. For
* wide streams, this should always be fp->_mbstate. On return, *nread
* is set to the number of bytes read.
*/
wint_t
__fgetwc_mbs(FILE *fp, mbstate_t *mbs, int *nread, locale_t locale)
{
wchar_t wc;
size_t nconv;
struct xlocale_ctype *l = XLOCALE_CTYPE(locale);
if (fp->_r <= 0 && __srefill(fp)) {
*nread = 0;
return (WEOF);
}
if (MB_CUR_MAX == 1) {
/* Fast path for single-byte encodings. */
wc = *fp->_p++;
fp->_r--;
*nread = 1;
return (wc);
}
*nread = 0;
do {
nconv = l->__mbrtowc(&wc, fp->_p, fp->_r, mbs);
if (nconv == (size_t)-1)
break;
else if (nconv == (size_t)-2)
continue;
else if (nconv == 0) {
fp->_p++;
fp->_r--;
(*nread)++;
return (L'\0');
} else {
fp->_p += nconv;
fp->_r -= nconv;
*nread += nconv;
return (wc);
}
} while (__srefill(fp) == 0);
fp->_flags |= __SERR;
errno = EILSEQ;
return (WEOF);
}
|
