| 1 | /* hard-locale.c -- Determine whether a locale is hard.
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| 2 |
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| 3 | Copyright (C) 1997, 1998, 1999, 2002 Free Software Foundation, Inc.
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| 4 |
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| 5 | This program is free software; you can redistribute it and/or modify
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| 6 | it under the terms of the GNU General Public License as published by
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| 7 | the Free Software Foundation; either version 2, or (at your option)
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| 8 | any later version.
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| 9 |
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| 10 | This program is distributed in the hope that it will be useful,
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 13 | GNU General Public License for more details.
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| 14 |
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| 15 | You should have received a copy of the GNU General Public License
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| 16 | along with this program; if not, write to the Free Software Foundation,
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| 17 | Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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| 18 |
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| 19 | #if HAVE_CONFIG_H
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| 20 | # include <config.h>
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| 21 | #endif
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| 22 |
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| 23 | #if HAVE_LOCALE_H
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| 24 | # include <locale.h>
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| 25 | #endif
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| 26 |
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| 27 | #if HAVE_STDLIB_H
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| 28 | # include <stdlib.h>
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| 29 | #endif
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| 30 |
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| 31 | #if HAVE_STRING_H
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| 32 | # include <string.h>
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| 33 | #endif
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| 34 |
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| 35 | #include "hard-locale.h"
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| 36 |
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| 37 | /* Return nonzero if the current CATEGORY locale is hard, i.e. if you
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| 38 | can't get away with assuming traditional C or POSIX behavior. */
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| 39 | int
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| 40 | hard_locale (int category)
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| 41 | {
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| 42 | #if ! HAVE_SETLOCALE
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| 43 | return 0;
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| 44 | #else
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| 45 |
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| 46 | int hard = 1;
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| 47 | char const *p = setlocale (category, 0);
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| 48 |
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| 49 | if (p)
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| 50 | {
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| 51 | # if defined __GLIBC__ && 2 <= __GLIBC__
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| 52 | if (strcmp (p, "C") == 0 || strcmp (p, "POSIX") == 0)
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| 53 | hard = 0;
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| 54 | # else
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| 55 | char *locale = malloc (strlen (p) + 1);
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| 56 | if (locale)
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| 57 | {
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| 58 | strcpy (locale, p);
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| 59 |
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| 60 | /* Temporarily set the locale to the "C" and "POSIX" locales
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| 61 | to find their names, so that we can determine whether one
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| 62 | or the other is the caller's locale. */
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| 63 | if (((p = setlocale (category, "C"))
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| 64 | && strcmp (p, locale) == 0)
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| 65 | || ((p = setlocale (category, "POSIX"))
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| 66 | && strcmp (p, locale) == 0))
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| 67 | hard = 0;
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| 68 |
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| 69 | /* Restore the caller's locale. */
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| 70 | setlocale (category, locale);
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| 71 | free (locale);
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| 72 | }
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| 73 | # endif
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| 74 | }
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| 75 |
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| 76 | return hard;
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| 77 |
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| 78 | #endif
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| 79 | }
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