88 lines
2.1 KiB
C
88 lines
2.1 KiB
C
/* hard-locale.c -- Determine whether a locale is hard.
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Copyright 1997, 1998, 1999 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation,
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Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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/* $FreeBSD$ */
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#if HAVE_CONFIG_H
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# include <config.h>
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#endif
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#ifndef __GNUC__
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# ifdef HAVE_ALLOCA_H
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# include <alloca.h>
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# else
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# ifdef _AIX
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# pragma alloca
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# else
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# ifdef _WIN32
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# include <malloc.h>
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# include <io.h>
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# else
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# ifndef alloca
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char *alloca ();
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# endif
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# endif
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# endif
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# endif
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#endif
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#if HAVE_LOCALE_H
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# include <locale.h>
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#endif
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#if HAVE_STRING_H
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# include <string.h>
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#endif
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/* Return nonzero if the current CATEGORY locale is hard, i.e. if you
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can't get away with assuming traditional C or POSIX behavior. */
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int
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hard_locale (int category)
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{
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#if ! HAVE_SETLOCALE
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return 0;
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#else
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int hard = 1;
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char const *p = setlocale (category, 0);
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if (p)
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{
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# if defined(__FreeBSD__) || (defined __GLIBC__ && __GLIBC__ >= 2)
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if (strcmp (p, "C") == 0 || strcmp (p, "POSIX") == 0)
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hard = 0;
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# else
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char *locale = alloca (strlen (p) + 1);
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strcpy (locale, p);
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/* Temporarily set the locale to the "C" and "POSIX" locales to
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find their names, so that we can determine whether one or the
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other is the caller's locale. */
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if (((p = setlocale (category, "C")) && strcmp (p, locale) == 0)
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|| ((p = setlocale (category, "POSIX")) && strcmp (p, locale) == 0))
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hard = 0;
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/* Restore the caller's locale. */
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setlocale (category, locale);
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# endif
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}
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return hard;
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#endif
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}
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