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/*
* Copyright (C) 2008 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.
* 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.
*/
#include "config.h"
#include <wtf/unicode/Collator.h>
#if USE(ICU_UNICODE) && !UCONFIG_NO_COLLATION
#include <wtf/Assertions.h>
#include <wtf/Threading.h>
#include <unicode/ucol.h>
#include <string.h>
#if OS(DARWIN)
#include <wtf/RetainPtr.h>
#include <CoreFoundation/CoreFoundation.h>
#endif
namespace WTF {
static UCollator* cachedCollator;
static Mutex& cachedCollatorMutex()
{
AtomicallyInitializedStatic(Mutex&, mutex = *new Mutex);
return mutex;
}
Collator::Collator(const char* locale)
: m_collator(0)
, m_locale(locale ? strdup(locale) : 0)
, m_lowerFirst(false)
{
}
PassOwnPtr<Collator> Collator::userDefault()
{
#if OS(DARWIN) && USE(CF)
// Mac OS X doesn't set UNIX locale to match user-selected one, so ICU default doesn't work.
#if !OS(IOS) && __MAC_OS_X_VERSION_MIN_REQUIRED >= 1060
RetainPtr<CFLocaleRef> currentLocale(AdoptCF, CFLocaleCopyCurrent());
CFStringRef collationOrder = (CFStringRef)CFLocaleGetValue(currentLocale.get(), kCFLocaleCollatorIdentifier);
#else
RetainPtr<CFStringRef> collationOrderRetainer(AdoptCF, (CFStringRef)CFPreferencesCopyValue(CFSTR("AppleCollationOrder"), kCFPreferencesAnyApplication, kCFPreferencesCurrentUser, kCFPreferencesAnyHost));
CFStringRef collationOrder = collationOrderRetainer.get();
#endif
char buf[256];
if (!collationOrder)
return adoptPtr(new Collator(""));
CFStringGetCString(collationOrder, buf, sizeof(buf), kCFStringEncodingASCII);
return adoptPtr(new Collator(buf));
#else
return adoptPtr(new Collator(0));
#endif
}
Collator::~Collator()
{
releaseCollator();
free(m_locale);
}
void Collator::setOrderLowerFirst(bool lowerFirst)
{
m_lowerFirst = lowerFirst;
}
Collator::Result Collator::collate(const UChar* lhs, size_t lhsLength, const UChar* rhs, size_t rhsLength) const
{
if (!m_collator)
createCollator();
return static_cast<Result>(ucol_strcoll(m_collator, lhs, lhsLength, rhs, rhsLength));
}
void Collator::createCollator() const
{
ASSERT(!m_collator);
UErrorCode status = U_ZERO_ERROR;
{
Locker<Mutex> lock(cachedCollatorMutex());
if (cachedCollator) {
const char* cachedCollatorLocale = ucol_getLocaleByType(cachedCollator, ULOC_REQUESTED_LOCALE, &status);
ASSERT(U_SUCCESS(status));
ASSERT(cachedCollatorLocale);
UColAttributeValue cachedCollatorLowerFirst = ucol_getAttribute(cachedCollator, UCOL_CASE_FIRST, &status);
ASSERT(U_SUCCESS(status));
// FIXME: default locale is never matched, because ucol_getLocaleByType returns the actual one used, not 0.
if (m_locale && 0 == strcmp(cachedCollatorLocale, m_locale)
&& ((UCOL_LOWER_FIRST == cachedCollatorLowerFirst && m_lowerFirst) || (UCOL_UPPER_FIRST == cachedCollatorLowerFirst && !m_lowerFirst))) {
m_collator = cachedCollator;
cachedCollator = 0;
return;
}
}
}
m_collator = ucol_open(m_locale, &status);
if (U_FAILURE(status)) {
status = U_ZERO_ERROR;
m_collator = ucol_open("", &status); // Fallback to Unicode Collation Algorithm.
}
ASSERT(U_SUCCESS(status));
ucol_setAttribute(m_collator, UCOL_CASE_FIRST, m_lowerFirst ? UCOL_LOWER_FIRST : UCOL_UPPER_FIRST, &status);
ASSERT(U_SUCCESS(status));
}
void Collator::releaseCollator()
{
{
Locker<Mutex> lock(cachedCollatorMutex());
if (cachedCollator)
ucol_close(cachedCollator);
cachedCollator = m_collator;
m_collator = 0;
}
}
}
#endif
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