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/*
* Copyright (C) 2005 Apple Computer, Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#import <WebKit/WebNSUserDefaultsExtras.h>
#import <JavaScriptCore/Assertions.h>
#import <WebKitSystemInterface.h>
@implementation NSString (WebNSUserDefaultsPrivate)
- (NSString *)_webkit_HTTPStyleLanguageCode
{
// Look up the language code using CFBundle.
NSString *languageCode = self;
NSString *preferredLanguageCode = [(id)WKCopyCFLocalizationPreferredName((CFStringRef)self) autorelease];
if (preferredLanguageCode)
languageCode = preferredLanguageCode;
// Make the string lowercase.
NSString *lowercaseLanguageCode = [languageCode lowercaseString];
// Turn a '_' into a '-' if it appears after a 2-letter language code.
if ([lowercaseLanguageCode length] < 3 || [lowercaseLanguageCode characterAtIndex:2] != '_') {
return lowercaseLanguageCode;
}
NSMutableString *result = [lowercaseLanguageCode mutableCopy];
[result replaceCharactersInRange:NSMakeRange(2, 1) withString:@"-"];
return [result autorelease];
}
@end
@implementation NSUserDefaults (WebNSUserDefaultsExtras)
static NSString *preferredLanguageCode = nil;
static NSLock *preferredLanguageLock = nil;
static pthread_once_t preferredLanguageLockOnce = PTHREAD_ONCE_INIT;
static pthread_once_t addDefaultsChangeObserverOnce = PTHREAD_ONCE_INIT;
static void makeLock(void)
{
preferredLanguageLock = [[NSLock alloc] init];
}
+ (void)_webkit_ensureAndLockPreferredLanguageLock
{
pthread_once(&preferredLanguageLockOnce, makeLock);
[preferredLanguageLock lock];
}
+ (void)_webkit_defaultsDidChange
{
[self _webkit_ensureAndLockPreferredLanguageLock];
[preferredLanguageCode release];
preferredLanguageCode = nil;
[preferredLanguageLock unlock];
}
static void addDefaultsChangeObserver(void)
{
[[NSNotificationCenter defaultCenter] addObserver:[NSUserDefaults class]
selector:@selector(_webkit_defaultsDidChange)
name:NSUserDefaultsDidChangeNotification
object:[NSUserDefaults standardUserDefaults]];
}
+ (void)_webkit_addDefaultsChangeObserver
{
pthread_once(&addDefaultsChangeObserverOnce, addDefaultsChangeObserver);
}
+ (NSString *)_webkit_preferredLanguageCode
{
// Get this outside the lock since it might block on the defaults lock, while we are inside registerDefaults:.
NSUserDefaults *standardDefaults = [self standardUserDefaults];
BOOL addObserver = NO;
[self _webkit_ensureAndLockPreferredLanguageLock];
if (!preferredLanguageCode) {
NSArray *languages = [standardDefaults stringArrayForKey:@"AppleLanguages"];
if ([languages count] == 0) {
preferredLanguageCode = [@"en" retain];
} else {
preferredLanguageCode = [[[languages objectAtIndex:0] _webkit_HTTPStyleLanguageCode] copy];
}
addObserver = YES;
}
NSString *code = [[preferredLanguageCode retain] autorelease];
[preferredLanguageLock unlock];
if (addObserver) {
[self _webkit_addDefaultsChangeObserver];
}
return code;
}
@end
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