1 /* hard-locale.c -- Determine whether a locale is hard.
3 Copyright (C) 1997, 1998, 1999, 2002, 2003, 2004, 2006, 2007, 2009, 2010
4 Free Software Foundation, Inc.
6 This program is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>. */
21 #include "hard-locale.h"
28 # define GLIBC_VERSION __GLIBC__
30 # define GLIBC_VERSION 0
33 /* Return true if the current CATEGORY locale is hard, i.e. if you
34 can't get away with assuming traditional C or POSIX behavior. */
36 hard_locale (int category)
39 char const *p = setlocale (category, NULL);
43 if (2 <= GLIBC_VERSION)
45 if (strcmp (p, "C") == 0 || strcmp (p, "POSIX") == 0)
50 char *locale = strdup (p);
53 /* Temporarily set the locale to the "C" and "POSIX" locales
54 to find their names, so that we can determine whether one
55 or the other is the caller's locale. */
56 if (((p = setlocale (category, "C"))
57 && strcmp (p, locale) == 0)
58 || ((p = setlocale (category, "POSIX"))
59 && strcmp (p, locale) == 0))
62 /* Restore the caller's locale. */
63 setlocale (category, locale);