| 1 | /* hard-locale.c -- Determine whether a locale is hard.
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| 2 | Copyright 1997, 1998, 1999 Free Software Foundation, Inc.
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| 3 |
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| 4 | This program is free software; you can redistribute it and/or modify
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| 5 | it under the terms of the GNU General Public License as published by
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| 6 | the Free Software Foundation; either version 2, or (at your option)
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| 7 | any later version.
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| 8 |
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| 9 | This program is distributed in the hope that it will be useful,
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| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 12 | GNU General Public License for more details.
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| 13 |
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| 14 | You should have received a copy of the GNU General Public License
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| 15 | along with this program; if not, write to the Free Software Foundation,
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| 16 | Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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| 17 |
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| 18 | #if HAVE_CONFIG_H
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| 19 | # include <config.h>
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| 20 | #endif
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| 21 |
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| 22 | #ifndef __GNUC__
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| 23 | # ifdef HAVE_ALLOCA_H
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| 24 | # include <alloca.h>
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| 25 | # else
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| 26 | # ifdef _AIX
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| 27 | # pragma alloca
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| 28 | # else
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| 29 | # ifdef _WIN32
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| 30 | # include <malloc.h>
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| 31 | # include <io.h>
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| 32 | # else
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| 33 | # ifndef alloca
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| 34 | char *alloca ();
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| 35 | # endif
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| 36 | # endif
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| 37 | # endif
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| 38 | # endif
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| 39 | #endif
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| 40 |
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| 41 | #if HAVE_LOCALE_H
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| 42 | # include <locale.h>
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| 43 | #endif
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| 44 |
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| 45 | #if HAVE_STRING_H
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| 46 | # include <string.h>
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| 47 | #endif
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| 48 |
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| 49 | /* Return nonzero if the current CATEGORY locale is hard, i.e. if you
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| 50 | can't get away with assuming traditional C or POSIX behavior. */
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| 51 | int
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| 52 | hard_locale (int category)
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| 53 | {
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| 54 | #if ! (defined ENABLE_NLS && HAVE_SETLOCALE)
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| 55 | return 0;
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| 56 | #else
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| 57 |
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| 58 | int hard = 1;
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| 59 | char const *p = setlocale (category, 0);
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| 60 |
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| 61 | if (p)
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| 62 | {
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| 63 | # if defined __GLIBC__ && __GLIBC__ >= 2
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| 64 | if (strcmp (p, "C") == 0 || strcmp (p, "POSIX") == 0)
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| 65 | hard = 0;
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| 66 | # else
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| 67 | char *locale = alloca (strlen (p) + 1);
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| 68 | strcpy (locale, p);
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| 69 |
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| 70 | /* Temporarily set the locale to the "C" and "POSIX" locales to
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| 71 | find their names, so that we can determine whether one or the
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| 72 | other is the caller's locale. */
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| 73 | if (((p = setlocale (category, "C")) && strcmp (p, locale) == 0)
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| 74 | || ((p = setlocale (category, "POSIX")) && strcmp (p, locale) == 0))
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| 75 | hard = 0;
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| 76 |
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| 77 | /* Restore the caller's locale. */
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| 78 | setlocale (category, locale);
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| 79 | # endif
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| 80 | }
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| 81 |
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| 82 | return hard;
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| 83 |
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| 84 | #endif
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| 85 | }
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