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
|
/* hard-locale.c -- Determine whether a locale is hard.
Copyright (C) 1997, 1998, 1999, 2002, 2003, 2004 Free Software
Foundation, Inc.
This program 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, or (at your option)
any later version.
This program 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 this program; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
#if HAVE_CONFIG_H
# include <config.h>
#endif
#include "hard-locale.h"
#include <locale.h>
#include <stdlib.h>
#include <string.h>
#include "strdup.h"
#ifdef __GLIBC__
# define GLIBC_VERSION __GLIBC__
#else
# define GLIBC_VERSION 0
#endif
/* Return true if the current CATEGORY locale is hard, i.e. if you
can't get away with assuming traditional C or POSIX behavior. */
bool
hard_locale (int category)
{
bool hard = true;
char const *p = setlocale (category, NULL);
if (p)
{
if (2 <= GLIBC_VERSION)
{
if (strcmp (p, "C") == 0 || strcmp (p, "POSIX") == 0)
hard = false;
}
else
{
char *locale = strdup (p);
if (locale)
{
/* Temporarily set the locale to the "C" and "POSIX" locales
to find their names, so that we can determine whether one
or the other is the caller's locale. */
if (((p = setlocale (category, "C"))
&& strcmp (p, locale) == 0)
|| ((p = setlocale (category, "POSIX"))
&& strcmp (p, locale) == 0))
hard = false;
/* Restore the caller's locale. */
setlocale (category, locale);
free (locale);
}
}
}
return hard;
}
|
