Source/WebCore/platform/text/mac/HyphenationMac.mm

/*
 * Copyright (C) 2010 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 "Hyphenation.h"

#if !PLATFORM(IOS) && __MAC_OS_X_VERSION_MIN_REQUIRED <= 1060

#import "AtomicStringKeyedMRUCache.h"
#import "TextBreakIteratorInternalICU.h"
#import "WebCoreSystemInterface.h"
#import <wtf/RetainPtr.h>

namespace WebCore {

template<>
bool AtomicStringKeyedMRUCache<bool>::createValueForNullKey()
{
    return !strcmp(currentSearchLocaleID(), "en");
}

template<>
bool AtomicStringKeyedMRUCache<bool>::createValueForKey(const AtomicString& localeIdentifier)
{
    RetainPtr<CFStringRef> cfLocaleIdentifier(AdoptCF, localeIdentifier.createCFString());
    RetainPtr<CFDictionaryRef> components(AdoptCF, CFLocaleCreateComponentsFromLocaleIdentifier(kCFAllocatorDefault, cfLocaleIdentifier.get()));
    CFStringRef language = reinterpret_cast<CFStringRef>(CFDictionaryGetValue(components.get(), kCFLocaleLanguageCode));
    static CFStringRef englishLanguage = CFSTR("en");
    return language && CFEqual(language, englishLanguage);
}

bool canHyphenate(const AtomicString& localeIdentifier)
{
    DEFINE_STATIC_LOCAL(AtomicStringKeyedMRUCache<bool>, isEnglishCache, ());
    return isEnglishCache.get(localeIdentifier);
}

size_t lastHyphenLocation(const UChar* characters, size_t length, size_t beforeIndex, const AtomicString& localeIdentifier)
{
    ASSERT_UNUSED(localeIdentifier, canHyphenate(localeIdentifier));

    RetainPtr<CFStringRef> string(AdoptCF, CFStringCreateWithCharactersNoCopy(kCFAllocatorDefault, characters, length, kCFAllocatorNull));
    return wkGetHyphenationLocationBeforeIndex(string.get(), beforeIndex);
}

} // namespace WebCore

#endif // !PLATFORM(IOS) && __MAC_OS_X_VERSION_MIN_REQUIRED <= 1060