/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

/*

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 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/.

 *

 * This file incorporates work covered by the following license notice:

 *

 *   Licensed to the Apache Software Foundation (ASF) under one or more

 *   contributor license agreements. See the NOTICE file distributed

 *   with this work for additional information regarding copyright

 *   ownership. The ASF licenses this file to you under the Apache

 *   License, Version 2.0 (the "License"); you may not use this file

 *   except in compliance with the License. You may obtain a copy of

 *   the License at http://www.apache.org/licenses/LICENSE-2.0 .

 */

#include <cppuhelper/supportsservice.hxx>

#include <characterclassificationImpl.hxx>

#include <localedata.hxx>

#include <com/sun/star/uno/XComponentContext.hpp>

using namespace com::sun::star::uno;

using namespace ::com::sun::star::i18n;

using namespace com::sun::star::lang;

namespace i18npool {

CharacterClassificationImpl::CharacterClassificationImpl(

        const Reference < XComponentContext >& rxContext ) : m_xContext( rxContext )

{

    if (createLocaleSpecificCharacterClassification(u"Unicode"_ustr, Locale()))

        xUCI = cachedItem->xCI;

}

CharacterClassificationImpl::~CharacterClassificationImpl() {

}

OUString SAL_CALL

CharacterClassificationImpl::toUpper( const OUString& Text, sal_Int32 nPos,

        sal_Int32 nCount, const Locale& rLocale )

{

    return getLocaleSpecificCharacterClassification(rLocale)->toUpper(Text, nPos, nCount, rLocale);

}

OUString SAL_CALL

CharacterClassificationImpl::toLower( const OUString& Text, sal_Int32 nPos,

        sal_Int32 nCount, const Locale& rLocale )

{

    return getLocaleSpecificCharacterClassification(rLocale)->toLower(Text, nPos, nCount, rLocale);

}

OUString SAL_CALL

CharacterClassificationImpl::toTitle( const OUString& Text, sal_Int32 nPos,

        sal_Int32 nCount, const Locale& rLocale )

{

    return getLocaleSpecificCharacterClassification(rLocale)->toTitle(Text, nPos, nCount, rLocale);

}

sal_Int16 SAL_CALL

CharacterClassificationImpl::getType( const OUString& Text, sal_Int32 nPos )

{

    if (xUCI.is())

        return xUCI->getType(Text, nPos);

    throw RuntimeException();

}

sal_Int16 SAL_CALL

CharacterClassificationImpl::getCharacterDirection( const OUString& Text, sal_Int32 nPos )

{

    if (xUCI.is())

        return xUCI->getCharacterDirection(Text, nPos);

    throw RuntimeException();

}

sal_Int16 SAL_CALL

CharacterClassificationImpl::getScript( const OUString& Text, sal_Int32 nPos )

{

    if (xUCI.is())

        return xUCI->getScript(Text, nPos);

    throw RuntimeException();

}

sal_Int32 SAL_CALL

CharacterClassificationImpl::getCharacterType( const OUString& Text, sal_Int32 nPos,

        const Locale& rLocale )

{

    return getLocaleSpecificCharacterClassification(rLocale)->getCharacterType(Text, nPos, rLocale);

}

sal_Int32 SAL_CALL

CharacterClassificationImpl::getStringType( const OUString& Text, sal_Int32 nPos,

        sal_Int32 nCount, const Locale& rLocale )

{

    return getLocaleSpecificCharacterClassification(rLocale)->getStringType(Text, nPos, nCount, rLocale);

}

ParseResult SAL_CALL CharacterClassificationImpl::parseAnyToken(

        const OUString& Text, sal_Int32 nPos, const Locale& rLocale,

        sal_Int32 startCharTokenType, const OUString& userDefinedCharactersStart,

        sal_Int32 contCharTokenType, const OUString& userDefinedCharactersCont )

{

    return getLocaleSpecificCharacterClassification(rLocale)->parseAnyToken(Text, nPos, rLocale,

            startCharTokenType,userDefinedCharactersStart,

            contCharTokenType, userDefinedCharactersCont);

}

ParseResult SAL_CALL CharacterClassificationImpl::parsePredefinedToken(

        sal_Int32 nTokenType, const OUString& Text, sal_Int32 nPos,

        const Locale& rLocale, sal_Int32 startCharTokenType,

        const OUString& userDefinedCharactersStart, sal_Int32 contCharTokenType,

        const OUString& userDefinedCharactersCont )

{

    return getLocaleSpecificCharacterClassification(rLocale)->parsePredefinedToken(

            nTokenType, Text, nPos, rLocale, startCharTokenType, userDefinedCharactersStart,

            contCharTokenType, userDefinedCharactersCont);

}

bool CharacterClassificationImpl::createLocaleSpecificCharacterClassification(const OUString& serviceName, const Locale& rLocale)

{

    // to share service between same Language but different Country code, like zh_CN and zh_SG

    for (size_t l = 0; l < lookupTable.size(); l++) {

        cachedItem = lookupTable[l];

        if (serviceName == cachedItem->aName) {

            lookupTable.emplace_back( rLocale, serviceName, cachedItem->xCI );

            cachedItem = lookupTable.back();

            return true;

        }

    }

    Reference < XInterface > xI = m_xContext->getServiceManager()->createInstanceWithContext(

            "com.sun.star.i18n.CharacterClassification_" + serviceName, m_xContext);

    Reference < XCharacterClassification > xCI;

    if ( xI.is() ) {

        xCI.set( xI, UNO_QUERY );

        if (xCI.is()) {

            lookupTable.emplace_back( rLocale, serviceName, xCI );

            cachedItem = lookupTable.back();

            return true;

        }

    }

    return false;

}

Reference < XCharacterClassification > const &

CharacterClassificationImpl::getLocaleSpecificCharacterClassification(const Locale& rLocale)

{

    // reuse instance if locale didn't change

    if (cachedItem && cachedItem->equals(rLocale))

        return cachedItem->xCI;

    else {

        for (const auto & i : lookupTable) {

            cachedItem = i;

            if (cachedItem->equals(rLocale))

                return cachedItem->xCI;

        }

        // Load service with name <base>_<lang>_<country> or

        // <base>_<bcp47> and fallbacks.

        bool bLoaded = createLocaleSpecificCharacterClassification(

                LocaleDataImpl::getFirstLocaleServiceName( rLocale), rLocale);

        if (!bLoaded)

        {

            ::std::vector< OUString > aFallbacks( LocaleDataImpl::getFallbackLocaleServiceNames( rLocale));

            for (const auto& rFallback : aFallbacks)

            {

                bLoaded = createLocaleSpecificCharacterClassification(rFallback, rLocale);

                if (bLoaded)

                    break;

            }

        }

        if (bLoaded)

            return cachedItem->xCI;

        else if (xUCI.is())

        {

            lookupTable.emplace_back( rLocale, "Unicode", xUCI );

            cachedItem = lookupTable.back();

            return cachedItem->xCI;

        }

    }

    throw RuntimeException();

}

OUString SAL_CALL

CharacterClassificationImpl::getImplementationName()

{

    return u"com.sun.star.i18n.CharacterClassification"_ustr;

}

sal_Bool SAL_CALL

CharacterClassificationImpl::supportsService(const OUString& rServiceName)

{

    return cppu::supportsService(this, rServiceName);

}

Sequence< OUString > SAL_CALL

CharacterClassificationImpl::getSupportedServiceNames()

{

    return { u"com.sun.star.i18n.CharacterClassification"_ustr };

}

}

extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface *

com_sun_star_i18n_CharacterClassification_get_implementation(

    css::uno::XComponentContext *context,

    css::uno::Sequence<css::uno::Any> const &)

{

    return cppu::acquire(new i18npool::CharacterClassificationImpl(context));

}

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