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/* -*- 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 <com/sun/star/i18n/TransliterationType.hpp>
#include <rtl/ref.hxx>

#include <i18nutil/casefolding.hxx>
#include <i18nutil/transliteration.hxx>

#include <transliteration_caseignore.hxx>

namespace com::sun::star::uno { class XComponentContext; }

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

namespace i18npool {

Transliteration_caseignore::Transliteration_caseignore()
{
    nMappingType = MappingType::FullFolding;
    moduleLoaded = TransliterationFlags::NONE;
    transliterationName = "case ignore (generic)";
    implementationName = "com.sun.star.i18n.Transliteration.Transliteration_caseignore";
}

void SAL_CALL
Transliteration_caseignore::loadModule( TransliterationModules modName, const Locale& rLocale )
{
    moduleLoaded |= static_cast<TransliterationFlags>(modName);
    aLocale = rLocale;
}

sal_Int16 SAL_CALL Transliteration_caseignore::getType()
{
    // It's NOT TransliterationType::ONE_TO_ONE because it's using casefolding
    return TransliterationType::IGNORE;
}


Sequence< OUString > SAL_CALL
Transliteration_caseignore::transliterateRange( const OUString& str1, const OUString& str2 )
{
    if (str1.getLength() != 1 || str2.getLength() != 1)
        throw RuntimeException();

    static rtl::Reference< Transliteration_u2l > u2l(new Transliteration_u2l);
    static rtl::Reference< Transliteration_l2u > l2u(new Transliteration_l2u);

    u2l->loadModule(TransliterationModules(0), aLocale);
    l2u->loadModule(TransliterationModules(0), aLocale);

    OUString l1 = u2l->transliterateString2String(str1, 0, str1.getLength());
    OUString u1 = l2u->transliterateString2String(str1, 0, str1.getLength());
    OUString l2 = u2l->transliterateString2String(str2, 0, str2.getLength());
    OUString u2 = l2u->transliterateString2String(str2, 0, str2.getLength());

    if ((l1 == u1) && (l2 == u2)) {
        Sequence< OUString > r(2);
        r[0] = l1;
        r[1] = l2;
        return r;
    } else {
        Sequence< OUString > r(4);
        r[0] = l1;
        r[1] = l2;
        r[2] = u1;
        r[3] = u2;
        return r;
    }
}

sal_Bool SAL_CALL
Transliteration_caseignore::equals(
    const OUString& str1, sal_Int32 pos1, sal_Int32 nCount1, sal_Int32& nMatch1,
    const OUString& str2, sal_Int32 pos2, sal_Int32 nCount2, sal_Int32& nMatch2)
{
    return (compare(str1, pos1, nCount1, nMatch1, str2, pos2, nCount2, nMatch2) == 0);
}

sal_Int32 SAL_CALL
Transliteration_caseignore::compareSubstring(
    const OUString& str1, sal_Int32 off1, sal_Int32 len1,
    const OUString& str2, sal_Int32 off2, sal_Int32 len2)
{
    sal_Int32 nMatch1, nMatch2;
    return compare(str1, off1, len1, nMatch1, str2, off2, len2, nMatch2);
}


sal_Int32 SAL_CALL
Transliteration_caseignore::compareString(
    const OUString& str1,
    const OUString& str2)
{
    sal_Int32 nMatch1, nMatch2;
    return compare(str1, 0, str1.getLength(), nMatch1, str2, 0, str2.getLength(), nMatch2);
}

sal_Int32
Transliteration_caseignore::compare(
    const OUString& str1, sal_Int32 pos1, sal_Int32 nCount1, sal_Int32& nMatch1,
    const OUString& str2, sal_Int32 pos2, sal_Int32 nCount2, sal_Int32& nMatch2)
{
    const sal_Unicode *unistr1 = const_cast<sal_Unicode*>(str1.getStr()) + pos1;
    const sal_Unicode *unistr2 = const_cast<sal_Unicode*>(str2.getStr()) + pos2;
    sal_Unicode c1, c2;
    i18nutil::MappingElement e1, e2;
    nMatch1 = nMatch2 = 0;

#define NOT_END_OF_STR1 (nMatch1 < nCount1 || e1.current < e1.element.nmap)
#define NOT_END_OF_STR2 (nMatch2 < nCount2 || e2.current < e2.element.nmap)

    while (NOT_END_OF_STR1 && NOT_END_OF_STR2) {
        c1 = i18nutil::casefolding::getNextChar(unistr1, nMatch1, nCount1, e1, aLocale, nMappingType, moduleLoaded);
        c2 = i18nutil::casefolding::getNextChar(unistr2, nMatch2, nCount2, e2, aLocale, nMappingType, moduleLoaded);
        if (c1 != c2) {
        nMatch1--; nMatch2--;
        return c1 > c2 ? 1 : -1;
        }
    }

    return (!NOT_END_OF_STR1 && !NOT_END_OF_STR2) ? 0
                : (NOT_END_OF_STR1 ? 1 : -1);
}

}

extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface *
com_sun_star_i18n_Transliteration_IGNORE_CASE_get_implementation(<--- The function 'com_sun_star_i18n_Transliteration_IGNORE_CASE_get_implementation' is never used.
    css::uno::XComponentContext *,
    css::uno::Sequence<css::uno::Any> const &)
{
    return cppu::acquire(new i18npool::Transliteration_caseignore());
}

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */