1*18fd37a7SXin LI /* hard-locale.c -- Determine whether a locale is hard.
2*18fd37a7SXin LI
3*18fd37a7SXin LI Copyright (C) 1997, 1998, 1999, 2002, 2003 Free Software Foundation, Inc.
4*18fd37a7SXin LI
5*18fd37a7SXin LI This program is free software; you can redistribute it and/or modify
6*18fd37a7SXin LI it under the terms of the GNU General Public License as published by
7*18fd37a7SXin LI the Free Software Foundation; either version 2, or (at your option)
8*18fd37a7SXin LI any later version.
9*18fd37a7SXin LI
10*18fd37a7SXin LI This program is distributed in the hope that it will be useful,
11*18fd37a7SXin LI but WITHOUT ANY WARRANTY; without even the implied warranty of
12*18fd37a7SXin LI MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13*18fd37a7SXin LI GNU General Public License for more details.
14*18fd37a7SXin LI
15*18fd37a7SXin LI You should have received a copy of the GNU General Public License
16*18fd37a7SXin LI along with this program; if not, write to the Free Software Foundation,
17*18fd37a7SXin LI Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
18*18fd37a7SXin LI
19*18fd37a7SXin LI #if HAVE_CONFIG_H
20*18fd37a7SXin LI # include <config.h>
21*18fd37a7SXin LI #endif
22*18fd37a7SXin LI
23*18fd37a7SXin LI #include "hard-locale.h"
24*18fd37a7SXin LI
25*18fd37a7SXin LI #if HAVE_LOCALE_H
26*18fd37a7SXin LI # include <locale.h>
27*18fd37a7SXin LI #endif
28*18fd37a7SXin LI
29*18fd37a7SXin LI #include <stdlib.h>
30*18fd37a7SXin LI #include <string.h>
31*18fd37a7SXin LI
32*18fd37a7SXin LI /* Return nonzero if the current CATEGORY locale is hard, i.e. if you
33*18fd37a7SXin LI can't get away with assuming traditional C or POSIX behavior. */
34*18fd37a7SXin LI int
hard_locale(int category)35*18fd37a7SXin LI hard_locale (int category)
36*18fd37a7SXin LI {
37*18fd37a7SXin LI #if ! HAVE_SETLOCALE
38*18fd37a7SXin LI return 0;
39*18fd37a7SXin LI #else
40*18fd37a7SXin LI
41*18fd37a7SXin LI int hard = 1;
42*18fd37a7SXin LI char const *p = setlocale (category, 0);
43*18fd37a7SXin LI
44*18fd37a7SXin LI if (p)
45*18fd37a7SXin LI {
46*18fd37a7SXin LI # if defined __GLIBC__ && 2 <= __GLIBC__
47*18fd37a7SXin LI if (strcmp (p, "C") == 0 || strcmp (p, "POSIX") == 0)
48*18fd37a7SXin LI hard = 0;
49*18fd37a7SXin LI # else
50*18fd37a7SXin LI char *locale = malloc (strlen (p) + 1);
51*18fd37a7SXin LI if (locale)
52*18fd37a7SXin LI {
53*18fd37a7SXin LI strcpy (locale, p);
54*18fd37a7SXin LI
55*18fd37a7SXin LI /* Temporarily set the locale to the "C" and "POSIX" locales
56*18fd37a7SXin LI to find their names, so that we can determine whether one
57*18fd37a7SXin LI or the other is the caller's locale. */
58*18fd37a7SXin LI if (((p = setlocale (category, "C"))
59*18fd37a7SXin LI && strcmp (p, locale) == 0)
60*18fd37a7SXin LI || ((p = setlocale (category, "POSIX"))
61*18fd37a7SXin LI && strcmp (p, locale) == 0))
62*18fd37a7SXin LI hard = 0;
63*18fd37a7SXin LI
64*18fd37a7SXin LI /* Restore the caller's locale. */
65*18fd37a7SXin LI setlocale (category, locale);
66*18fd37a7SXin LI free (locale);
67*18fd37a7SXin LI }
68*18fd37a7SXin LI # endif
69*18fd37a7SXin LI }
70*18fd37a7SXin LI
71*18fd37a7SXin LI return hard;
72*18fd37a7SXin LI
73*18fd37a7SXin LI #endif
74*18fd37a7SXin LI }
75