| 1 | /* hard-locale.h -- Same as hard-locale.c.
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| 2 | *
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| 3 | * For gawk, put this in a header file, provides source code
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| 4 | * compatibility with GNU grep for dfa.c, so that dfa.c need
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| 5 | * not be continually modified by hand.
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| 6 | */
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| 7 | /* hard-locale.c -- Determine whether a locale is hard.
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| 8 | Copyright 1997, 1998, 1999 Free Software Foundation, Inc.
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| 9 |
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| 10 | This program is free software; you can redistribute it and/or modify
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| 11 | it under the terms of the GNU General Public License as published by
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| 12 | the Free Software Foundation; either version 2, or (at your option)
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| 13 | any later version.
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| 14 |
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| 15 | This program is distributed in the hope that it will be useful,
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| 16 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 18 | GNU General Public License for more details.
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| 19 |
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| 20 | You should have received a copy of the GNU General Public License
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| 21 | along with this program; if not, write to the Free Software Foundation,
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| 22 | Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
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| 23 |
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| 24 |
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| 25 | /* Return nonzero if the current CATEGORY locale is hard, i.e. if you
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| 26 | can't get away with assuming traditional C or POSIX behavior. */
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| 27 | static int
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| 28 | hard_locale (int category)
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| 29 | {
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| 30 | #if ! (defined ENABLE_NLS && HAVE_SETLOCALE)
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| 31 | return 0;
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| 32 | #else
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| 33 |
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| 34 | int hard = 1;
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| 35 | char const *p = setlocale (category, 0);
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| 36 |
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| 37 | if (p)
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| 38 | {
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| 39 | # if defined __GLIBC__ && __GLIBC__ >= 2
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| 40 | if (strcmp (p, "C") == 0 || strcmp (p, "POSIX") == 0)
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| 41 | hard = 0;
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| 42 | # else
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| 43 | static ptr_t xmalloc PARAMS ((size_t n));
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| 44 |
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| 45 | char *locale = xmalloc (strlen (p) + 1);
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| 46 | strcpy (locale, p);
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| 47 |
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| 48 | /* Temporarily set the locale to the "C" and "POSIX" locales to
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| 49 | find their names, so that we can determine whether one or the
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| 50 | other is the caller's locale. */
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| 51 | if (((p = setlocale (category, "C")) && strcmp (p, locale) == 0)
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| 52 | || ((p = setlocale (category, "POSIX")) && strcmp (p, locale) == 0))
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| 53 | hard = 0;
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| 54 |
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| 55 | /* Restore the caller's locale. */
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| 56 | setlocale (category, locale);
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| 57 | free(locale);
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| 58 | # endif
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| 59 | }
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| 60 |
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| 61 | return hard;
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| 62 |
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| 63 | #endif
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| 64 | }
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