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/*
* Copyright (C) 2003, 2005, 2006, 2010, 2011 Apple 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. 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 INC. 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 "config.h"
#import "Language.h"
#import "BlockExceptions.h"
#import "WebCoreSystemInterface.h"
#import <wtf/Assertions.h>
#import <wtf/MainThread.h>
#import <wtf/RetainPtr.h>
#import <wtf/text/WTFString.h>
using namespace WebCore;
static BOOL useCachedPreferredLanguages;
@interface WebLanguageChangeObserver : NSObject {
}
@end
@implementation WebLanguageChangeObserver
+ (void)_webkit_languagePreferencesDidChange
{
ASSERT(isMainThread());
useCachedPreferredLanguages = NO;
languageDidChange();
}
@end
namespace WebCore {
static String httpStyleLanguageCode(NSString *languageCode)
{
ASSERT(isMainThread());
// Look up the language code using CFBundle.
RetainPtr<CFStringRef> preferredLanguageCode(AdoptCF, wkCopyCFLocalizationPreferredName((CFStringRef)languageCode));
if (preferredLanguageCode)
languageCode = (NSString *)preferredLanguageCode.get();
// 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] == '_') {
RetainPtr<NSMutableString> mutableLanguageCode(AdoptNS, [lowercaseLanguageCode mutableCopy]);
[mutableLanguageCode.get() replaceCharactersInRange:NSMakeRange(2, 1) withString:@"-"];
return mutableLanguageCode.get();
}
return lowercaseLanguageCode;
}
Vector<String> platformUserPreferredLanguages()
{
DEFINE_STATIC_LOCAL(Vector<String>, userPreferredLanguages, ());
ASSERT(isMainThread());
BEGIN_BLOCK_OBJC_EXCEPTIONS;
if (!useCachedPreferredLanguages) {
useCachedPreferredLanguages = YES;
userPreferredLanguages.clear();
RetainPtr<CFArrayRef> languages(AdoptCF, CFLocaleCopyPreferredLanguages());
CFIndex languageCount = CFArrayGetCount(languages.get());
if (!languageCount)
userPreferredLanguages.append("en");
else {
for (CFIndex i = 0; i < languageCount; i++)
userPreferredLanguages.append(httpStyleLanguageCode((NSString *)CFArrayGetValueAtIndex(languages.get(), i)));
}
}
#if !PLATFORM(IOS)
static bool languageChangeObserverAdded;
if (!languageChangeObserverAdded) {
[[NSDistributedNotificationCenter defaultCenter] addObserver:[WebLanguageChangeObserver self]
selector:@selector(_webkit_languagePreferencesDidChange)
name:@"AppleLanguagePreferencesChangedNotification"
object:nil];
languageChangeObserverAdded = true;
}
#endif // !PLATFORM(IOS)
return userPreferredLanguages;
END_BLOCK_OBJC_EXCEPTIONS;
return Vector<String>();
}
}
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