130 lines
3.7 KiB
C
130 lines
3.7 KiB
C
/* Determine the user's language preferences.
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Copyright (C) 2004-2005 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify it
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under the terms of the GNU Library General Public License as published
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by 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 GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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USA. */
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/* Written by Bruno Haible <bruno@clisp.org>. */
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <stdlib.h>
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#if HAVE_CFPREFERENCESCOPYAPPVALUE
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# include <string.h>
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# include <CFPreferences.h>
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# include <CFPropertyList.h>
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# include <CFArray.h>
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# include <CFString.h>
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extern void _nl_locale_name_canonicalize (char *name);
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#endif
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/* Determine the user's language preferences, as a colon separated list of
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locale names in XPG syntax
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language[_territory[.codeset]][@modifier]
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The result must not be freed; it is statically allocated.
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The LANGUAGE environment variable does not need to be considered; it is
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already taken into account by the caller. */
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const char *
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_nl_language_preferences_default (void)
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{
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#if HAVE_CFPREFERENCESCOPYAPPVALUE /* MacOS X 10.2 or newer */
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{
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/* Cache the preferences list, since CoreFoundation calls are expensive. */
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static const char *cached_languages;
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static int cache_initialized;
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if (!cache_initialized)
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{
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CFTypeRef preferences =
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CFPreferencesCopyAppValue (CFSTR ("AppleLanguages"),
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kCFPreferencesCurrentApplication);
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if (preferences != NULL
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&& CFGetTypeID (preferences) == CFArrayGetTypeID ())
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{
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CFArrayRef prefArray = (CFArrayRef)preferences;
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int n = CFArrayGetCount (prefArray);
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char buf[256];
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size_t size = 0;
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int i;
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for (i = 0; i < n; i++)
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{
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CFTypeRef element = CFArrayGetValueAtIndex (prefArray, i);
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if (element != NULL
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&& CFGetTypeID (element) == CFStringGetTypeID ()
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&& CFStringGetCString ((CFStringRef)element,
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buf, sizeof (buf),
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kCFStringEncodingASCII))
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{
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_nl_locale_name_canonicalize (buf);
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size += strlen (buf) + 1;
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/* Most GNU programs use msgids in English and don't ship
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an en.mo message catalog. Therefore when we see "en"
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in the preferences list, arrange for gettext() to
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return the msgid, and ignore all further elements of
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the preferences list. */
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if (strcmp (buf, "en") == 0)
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break;
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}
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else
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break;
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}
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if (size > 0)
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{
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char *languages = (char *) malloc (size);
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if (languages != NULL)
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{
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char *p = languages;
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for (i = 0; i < n; i++)
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{
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CFTypeRef element =
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CFArrayGetValueAtIndex (prefArray, i);
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if (element != NULL
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&& CFGetTypeID (element) == CFStringGetTypeID ()
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&& CFStringGetCString ((CFStringRef)element,
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buf, sizeof (buf),
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kCFStringEncodingASCII))
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{
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_nl_locale_name_canonicalize (buf);
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strcpy (p, buf);
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p += strlen (buf);
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*p++ = ':';
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if (strcmp (buf, "en") == 0)
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break;
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}
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else
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break;
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}
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*--p = '\0';
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cached_languages = languages;
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}
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}
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}
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cache_initialized = 1;
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}
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if (cached_languages != NULL)
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return cached_languages;
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}
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#endif
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return NULL;
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}
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