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

/*

 * This file is part of the LibreOffice project.

 *

 * This Source Code Form is subject to the terms of the Mozilla Public

 * 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 <sal/config.h>

#include <o3tl/temporary.hxx>

#include <rtl/ustrbuf.hxx>

#include <collatorImpl.hxx>

#include <indexentrysupplier_asian.hxx>

#include "data/indexdata_alphanumeric.h"

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

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

namespace i18npool {

IndexEntrySupplier_asian::IndexEntrySupplier_asian(

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

{

    implementationName = "com.sun.star.i18n.IndexEntrySupplier_asian";

}

IndexEntrySupplier_asian::~IndexEntrySupplier_asian()

{

}

OUString SAL_CALL

IndexEntrySupplier_asian::getIndexCharacter( const OUString& rIndexEntry,

    const Locale& rLocale, const OUString& rAlgorithm )

{

    sal_uInt32 ch = rIndexEntry.iterateCodePoints(&o3tl::temporary(sal_Int32(0)), 0);

    const sal_uInt16** (*func)(sal_Int16&)=nullptr;

    if ( rLocale.Language == "zh" && u"TW HK MO"_ustr.indexOf(rLocale.Country) >= 0 ) {

        if ( rAlgorithm == "radical" )

            func = get_indexdata_zh_TW_radical;

        else if ( rAlgorithm == "stroke" )

            func = get_indexdata_zh_TW_stroke;

    }

    if (!func) {

        if ( rLocale.Language == "ko" ) {

            if ( rAlgorithm == "dict" )

                func = get_indexdata_ko_dict;

        } else if ( rLocale.Language == "zh" ) {

            if ( rAlgorithm == "pinyin" )

                func = get_indexdata_zh_pinyin;

            else if ( rAlgorithm == "radical" )

                func = get_indexdata_zh_radical;

            else if ( rAlgorithm == "stroke" )

                func = get_indexdata_zh_stroke;

            else if ( rAlgorithm == "zhuyin" )

                func = get_indexdata_zh_zhuyin;

        }

    }

    if (func) {

        sal_Int16 max_index;

        const sal_uInt16** idx=func(max_index);

        if (static_cast<sal_Int16>(ch >> 8) <= max_index) {

            sal_uInt16 address=idx[0][ch >> 8];

            if (address != 0xFFFF) {

                address=idx[1][address+(ch & 0xFF)];

                return idx[2]

                    ? OUString(

                        reinterpret_cast<const sal_Unicode *>(&idx[2][address]))

                    : OUString(sal_Unicode(address));

            }

        }

    }

    // using alphanumeric index for non-define string

    return OUString(&idxStr[(ch & 0xFFFFFF00) ? 0 : ch], 1);

}

OUString SAL_CALL

IndexEntrySupplier_asian::getIndexKey( const OUString& rIndexEntry,

    const OUString& rPhoneticEntry, const Locale& rLocale)

{

    return getIndexCharacter(getEntry(rIndexEntry, rPhoneticEntry, rLocale), rLocale, aAlgorithm);

}

sal_Int16 SAL_CALL

IndexEntrySupplier_asian::compareIndexEntry(

    const OUString& rIndexEntry1, const OUString& rPhoneticEntry1, const Locale& rLocale1,

    const OUString& rIndexEntry2, const OUString& rPhoneticEntry2, const Locale& rLocale2 )

{

    sal_Int32 result = collator->compareString(getEntry(rIndexEntry1, rPhoneticEntry1, rLocale1),

                                    getEntry(rIndexEntry2, rPhoneticEntry2, rLocale2));

    // equivalent of phonetic entries does not mean equivalent of index entries.

    // we have to continue comparing index entry here.

    if (result == 0 && usePhonetic && !rPhoneticEntry1.isEmpty() &&

            rLocale1.Language == rLocale2.Language && rLocale1.Country == rLocale2.Country &&

            rLocale1.Variant == rLocale2.Variant)

        result = collator->compareString(rIndexEntry1, rIndexEntry2);

    return sal::static_int_cast< sal_Int16 >(result); // result in { -1, 0, 1 }

}

OUString SAL_CALL

IndexEntrySupplier_asian::getPhoneticCandidate( const OUString& rIndexEntry,

        const Locale& rLocale )

{

    sal_uInt16 const **(*func)(sal_Int16&)=nullptr;

    if ( rLocale.Language == "zh" )

        func = (u"TW HK MO"_ustr.indexOf(rLocale.Country) >= 0) ?  get_zh_zhuyin : get_zh_pinyin;

    else if ( rLocale.Language == "ko" )

        func = get_ko_phonetic;

    if (func) {

        OUStringBuffer candidate;

        sal_Int16 max_index;

        sal_uInt16 const ** idx=func(max_index);

        for (sal_Int32 i=0,j=0; i < rIndexEntry.getLength(); i=j) {

            sal_uInt32 ch = rIndexEntry.iterateCodePoints(&j);

            if (static_cast<sal_Int16>(ch>>8) <= max_index) {

                sal_uInt16 address = idx[0][ch>>8];

                if (address != 0xFFFF) {

                    address = idx[1][address + (ch & 0xFF)];

                    if ( i > 0 && rLocale.Language == "zh" )

                        candidate.append(" ");

                    if (idx[2])

                        candidate.append(

                            reinterpret_cast<const sal_Unicode *>(&idx[2][address]));

                    else

                        candidate.append(sal_Unicode(address));

                } else

                    candidate.append(" ");

            }

        }

        return candidate.makeStringAndClear();

    }

    return OUString();

}

}

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