/*
 * 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.
 */

#include "config.h"
#include "Hyphenation.h"

#if !defined(BUILDING_ON_TIGER) && !defined(BUILDING_ON_LEOPARD) && !defined(BUILDING_ON_SNOW_LEOPARD)

#include "AtomicStringKeyedMRUCache.h"
#include "TextBreakIteratorInternalICU.h"
#include <wtf/ListHashSet.h>
#include <wtf/RetainPtr.h>

#if PLATFORM(WIN)

#include "SoftLinking.h"

#ifdef DEBUG_ALL
SOFT_LINK_DEBUG_LIBRARY(CoreFoundation)
#else
SOFT_LINK_LIBRARY(CoreFoundation)
#endif

SOFT_LINK_OPTIONAL(CoreFoundation, CFStringGetHyphenationLocationBeforeIndex, CFIndex, , (CFStringRef string, CFIndex location, CFRange limitRange, CFOptionFlags options, CFLocaleRef locale, UTF32Char *character))
SOFT_LINK_OPTIONAL(CoreFoundation, CFStringIsHyphenationAvailableForLocale, Boolean, , (CFLocaleRef locale))

static CFIndex wkCFStringGetHyphenationLocationBeforeIndex(CFStringRef string, CFIndex location, CFRange limitRange, CFOptionFlags options, CFLocaleRef locale, UTF32Char *character)
{
    static CFStringGetHyphenationLocationBeforeIndexPtrType cfStringGetHyphenationLocationBeforeIndex = CFStringGetHyphenationLocationBeforeIndexPtr();
    if (!cfStringGetHyphenationLocationBeforeIndex)
        return kCFNotFound;
    return cfStringGetHyphenationLocationBeforeIndex(string, location, limitRange, options, locale, character);
}

static Boolean wkCFStringIsHyphenationAvailableForLocale(CFLocaleRef locale)
{
    static CFStringIsHyphenationAvailableForLocalePtrType cfStringIsHyphenationAvailableForLocale = CFStringIsHyphenationAvailableForLocalePtr();
    return cfStringIsHyphenationAvailableForLocale && cfStringIsHyphenationAvailableForLocale(locale);
}

#define CFStringGetHyphenationLocationBeforeIndex wkCFStringGetHyphenationLocationBeforeIndex
#define CFStringIsHyphenationAvailableForLocale wkCFStringIsHyphenationAvailableForLocale

#endif // PLATFORM(WIN)

namespace WebCore {

template<>
RetainPtr<CFLocaleRef> AtomicStringKeyedMRUCache<RetainPtr<CFLocaleRef> >::createValueForNullKey()
{
    RetainPtr<CFStringRef> cfLocaleIdentifier(AdoptCF, CFStringCreateWithBytesNoCopy(kCFAllocatorDefault, reinterpret_cast<const UInt8*>(currentSearchLocaleID()), strlen(currentSearchLocaleID()), kCFStringEncodingASCII, false, kCFAllocatorNull));
    RetainPtr<CFLocaleRef> locale(AdoptCF, CFLocaleCreate(kCFAllocatorDefault, cfLocaleIdentifier.get()));
    return locale;
}

template<>
RetainPtr<CFLocaleRef> AtomicStringKeyedMRUCache<RetainPtr<CFLocaleRef> >::createValueForKey(const AtomicString& localeIdentifier)
{
    RetainPtr<CFStringRef> cfLocaleIdentifier(AdoptCF, localeIdentifier.createCFString());
    RetainPtr<CFLocaleRef> locale(AdoptCF, CFLocaleCreate(kCFAllocatorDefault, cfLocaleIdentifier.get()));
    
    return CFStringIsHyphenationAvailableForLocale(locale.get()) ? locale : 0;
}

static AtomicStringKeyedMRUCache<RetainPtr<CFLocaleRef> >& cfLocaleCache()
{
    DEFINE_STATIC_LOCAL(AtomicStringKeyedMRUCache<RetainPtr<CFLocaleRef> >, cache, ());
    return cache;
}

bool canHyphenate(const AtomicString& localeIdentifier)
{
    return cfLocaleCache().get(localeIdentifier);
}

size_t lastHyphenLocation(const UChar* characters, size_t length, size_t beforeIndex, const AtomicString& localeIdentifier)
{
    RetainPtr<CFStringRef> string(AdoptCF, CFStringCreateWithCharactersNoCopy(kCFAllocatorDefault, reinterpret_cast<const UniChar*>(characters), length, kCFAllocatorNull));

    RetainPtr<CFLocaleRef> locale = cfLocaleCache().get(localeIdentifier);
    ASSERT(locale);

    CFIndex result = CFStringGetHyphenationLocationBeforeIndex(string.get(), beforeIndex, CFRangeMake(0, length), 0, locale.get(), 0);
    return result == kCFNotFound ? 0 : result;
}

} // namespace WebCore

#endif // !defined(BUILDING_ON_TIGER) && !defined(BUILDING_ON_LEOPARD) && !defined(BUILDING_ON_SNOW_LEOPARD)