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
|
/*
* convert.c: simple encoding conversions
*
* Copyright (C) 2007-2022 Colin Watson.
*
* This file is part of man-db.
*
* man-db is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* man-db is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with man-db; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif /* HAVE_CONFIG_H */
#include <errno.h>
#include <stdbool.h>
#include <string.h>
#ifdef HAVE_ICONV
# include <iconv.h>
#endif /* HAVE_ICONV */
#include "attribute.h"
#include "xalloc.h"
#include "xvasprintf.h"
#include "manconfig.h"
#include "cleanup.h"
#include "encodings.h"
#include "convert.h"
#ifdef HAVE_ICONV
static bool conv_to_locale_initialized = false;
static iconv_t conv_to_locale = (iconv_t) -1;
static void close_conv_to_locale (void *ignored MAYBE_UNUSED)
{
iconv_close (conv_to_locale);
}
char * ATTRIBUTE_MALLOC convert_to_locale (char *string)
{
if (!conv_to_locale_initialized) {
char *locale_charset = xasprintf
("%s//IGNORE", get_locale_charset ());
conv_to_locale = iconv_open (locale_charset, "UTF-8");
free (locale_charset);
if (conv_to_locale != (iconv_t) -1)
push_cleanup (close_conv_to_locale, NULL, 0);
conv_to_locale_initialized = true;
}
if (conv_to_locale != (iconv_t) -1) {
size_t string_conv_alloc = strlen (string) + 1;
char *string_conv = xmalloc (string_conv_alloc);
for (;;) {
char *inptr = string, *outptr = string_conv;
size_t inleft = strlen (string);
size_t outleft = string_conv_alloc - 1;
if (iconv (conv_to_locale,
(ICONV_CONST char **) &inptr, &inleft,
&outptr, &outleft) == (size_t) -1 &&
errno == E2BIG) {
string_conv_alloc <<= 1;
string_conv = xrealloc (string_conv,
string_conv_alloc);
} else {
/* Either we succeeded, or we've done our
* best; go ahead and print what we've got.
*/
string_conv[string_conv_alloc - 1 - outleft] =
'\0';
break;
}
}
return string_conv;
} else
return xstrdup (string);
}
#else /* !HAVE_ICONV */
char * ATTRIBUTE_MALLOC convert_to_locale (char *string)
{
return xstrdup (string);
}
#endif /* HAVE_ICONV */
|
