/* -*- 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 <comphelper/processfactory.hxx>

#include <unotools/charclass.hxx>

#include <rtl/character.hxx>

#include <comphelper/diagnose_ex.hxx>

#include <com/sun/star/i18n/CharacterClassification.hpp>

#include <utility>

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

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

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

CharClass::CharClass(

            const Reference< uno::XComponentContext > & rxContext,

            LanguageTag aLanguageTag

            )

    : maLanguageTag(std::move( aLanguageTag))

{

    xCC = CharacterClassification::create( rxContext );

}

CharClass::CharClass( LanguageTag aLanguageTag )

    : maLanguageTag(std::move( aLanguageTag))

{

    xCC = CharacterClassification::create( comphelper::getProcessComponentContext() );

}

CharClass::~CharClass()

{

}

const LanguageTag& CharClass::getLanguageTag() const

{

    return maLanguageTag;

}

const css::lang::Locale& CharClass::getMyLocale() const

{

    return maLanguageTag.getLocale();

}

// static

bool CharClass::isAsciiNumeric( std::u16string_view rStr )

{

    if ( rStr.empty() )

        return false;

    const sal_Unicode* p = rStr.data();

    const sal_Unicode* const pStop = p + rStr.size();

    do

    {

        if ( !rtl::isAsciiDigit( *p ) )

            return false;

    }

    while ( ++p < pStop );

    return true;

}

// static

bool CharClass::isAsciiAlpha( std::u16string_view rStr )

{

    if ( rStr.empty() )

        return false;

    const sal_Unicode* p = rStr.data();

    const sal_Unicode* const pStop = p + rStr.size();

    do

    {

        if ( !rtl::isAsciiAlpha( *p ) )

            return false;

    }

    while ( ++p < pStop );

    return true;

}

bool CharClass::isAlpha( const OUString& rStr, sal_Int32 nPos ) const

{

    sal_Unicode c = rStr[nPos];

    if ( c < 128 )

        return rtl::isAsciiAlpha( c );

    try

    {

        return  (xCC->getCharacterType( rStr, nPos, getMyLocale() ) &

                 nCharClassAlphaType) != 0;

    }

    catch ( const Exception& )

    {

        TOOLS_WARN_EXCEPTION("unotools.i18n", "" );

    }

    return false;

}

bool CharClass::isLetter( const OUString& rStr, sal_Int32 nPos ) const

{

    sal_Unicode c = rStr[nPos];

    if ( c < 128 )

        return rtl::isAsciiAlpha( c );

    try

    {

        return  (xCC->getCharacterType( rStr, nPos, getMyLocale() ) &

                 nCharClassLetterType) != 0;

    }

    catch ( const Exception& )

    {

        TOOLS_WARN_EXCEPTION("unotools.i18n", "" );

    }

    return false;

}

bool CharClass::isLetter( const OUString& rStr ) const

{

    if (rStr.isEmpty())

        return false;

    try

    {

        sal_Int32 nPos = 0;

        while (nPos < rStr.getLength())

        {

            if (!isLetter( rStr, nPos))

                return false;

            rStr.iterateCodePoints( &nPos);

        }

        return true;

    }

    catch ( const Exception& )

    {

        TOOLS_WARN_EXCEPTION("unotools.i18n", "" );

    }

    return false;

}

bool CharClass::isDigit( const OUString& rStr, sal_Int32 nPos ) const

{

    sal_Unicode c = rStr[ nPos ];

    if ( c < 128 )

        return rtl::isAsciiDigit( c );

    try

    {

        return  (xCC->getCharacterType( rStr, nPos, getMyLocale() ) &

                 KCharacterType::DIGIT) != 0;

    }

    catch ( const Exception& )

    {

        TOOLS_WARN_EXCEPTION("unotools.i18n", "" );

    }

    return false;

}

bool CharClass::isNumeric( const OUString& rStr ) const

{

    if (rStr.isEmpty())

        return false;

    try

    {

        sal_Int32 nPos = 0;

        while (nPos < rStr.getLength())

        {

            if (!isDigit( rStr, nPos))

                return false;

            rStr.iterateCodePoints( &nPos);

        }

        return true;

    }

    catch ( const Exception& )

    {

        TOOLS_WARN_EXCEPTION("unotools.i18n", "" );

    }

    return false;

}

bool CharClass::isAlphaNumeric( const OUString& rStr, sal_Int32 nPos ) const

{

    sal_Unicode c = rStr[nPos];

    if ( c < 128 )

        return rtl::isAsciiAlphanumeric( c );

    try

    {

        return  (xCC->getCharacterType( rStr, nPos, getMyLocale() ) &

                (nCharClassAlphaType | nCharClassNumericType)) != 0;

    }

    catch ( const Exception& )

    {

        TOOLS_WARN_EXCEPTION("unotools.i18n", "" );

    }

    return false;

}

bool CharClass::isLetterNumeric( const OUString& rStr, sal_Int32 nPos ) const

{

    sal_Unicode c = rStr[nPos];

    if ( c < 128 )

        return rtl::isAsciiAlphanumeric( c );

    try

    {

        return  (xCC->getCharacterType( rStr, nPos, getMyLocale() ) &

                (nCharClassLetterType | nCharClassNumericType)) != 0;

    }

    catch ( const Exception& )

    {

        TOOLS_WARN_EXCEPTION("unotools.i18n", "" );

    }

    return false;

}

bool CharClass::isLetterNumeric( const OUString& rStr ) const

{

    if (rStr.isEmpty())

        return false;

    try

    {

        sal_Int32 nPos = 0;

        while (nPos < rStr.getLength())

        {

            if (!isLetterNumeric( rStr, nPos))

                return false;

            rStr.iterateCodePoints( &nPos);

        }

        return true;

    }

    catch ( const Exception& )

    {

        TOOLS_WARN_EXCEPTION("unotools.i18n", "" );

    }

    return false;

}

bool CharClass::isBase( const OUString& rStr, sal_Int32 nPos ) const

{

    sal_Unicode c = rStr[nPos];

    if ( c < 128 )

        return rtl::isAsciiAlphanumeric( c );

    try

    {

        return  (xCC->getCharacterType( rStr, nPos, getMyLocale() ) & nCharClassBaseType ) != 0;

    }

    catch ( const Exception& )

    {

        TOOLS_WARN_EXCEPTION("unotools.i18n", "" );

    }

    return false;

}

bool CharClass::isUpper( const OUString& rStr, sal_Int32 nPos ) const

{

    sal_Unicode c = rStr[nPos];

    if ( c < 128 )

        return rtl::isAsciiUpperCase(c);

    try

    {

        return (xCC->getCharacterType( rStr, nPos, getMyLocale()) &

                KCharacterType::UPPER) != 0;

    }

    catch ( const Exception& )

    {

        TOOLS_WARN_EXCEPTION("unotools.i18n", "" );

    }

    return false;

}

OUString CharClass::titlecase(const OUString& rStr, sal_Int32 nPos, sal_Int32 nCount) const

{

    try

    {

        return xCC->toTitle( rStr, nPos, nCount, getMyLocale() );

    }

    catch ( const Exception& )

    {

        TOOLS_WARN_EXCEPTION("unotools.i18n", "" );

    }

    return rStr.copy( nPos, nCount );

}

OUString CharClass::uppercase( const OUString& rStr, sal_Int32 nPos, sal_Int32 nCount ) const

{

    try

    {

        return xCC->toUpper( rStr, nPos, nCount, getMyLocale() );

    }

    catch ( const Exception& )

    {

        TOOLS_WARN_EXCEPTION("unotools.i18n", "" );

    }

    return rStr.copy( nPos, nCount );

}

OUString CharClass::lowercase( const OUString& rStr, sal_Int32 nPos, sal_Int32 nCount ) const

{

    try

    {

        return xCC->toLower( rStr, nPos, nCount, getMyLocale() );

    }

    catch ( const Exception& )

    {

        TOOLS_WARN_EXCEPTION("unotools.i18n", "" );

    }

    return rStr.copy( nPos, nCount );

}

sal_Int16 CharClass::getType( const OUString& rStr, sal_Int32 nPos ) const

{

    try

    {

        return xCC->getType( rStr, nPos );

    }

    catch ( const Exception& )

    {

        TOOLS_WARN_EXCEPTION("unotools.i18n", "" );

    }

    return 0;

}

css::i18n::DirectionProperty CharClass::getCharacterDirection( const OUString& rStr, sal_Int32 nPos ) const

{

    try

    {

        return static_cast<css::i18n::DirectionProperty>(xCC->getCharacterDirection( rStr, nPos ));

    }

    catch ( const Exception& )

    {

        TOOLS_WARN_EXCEPTION("unotools.i18n", "" );

    }

    return css::i18n::DirectionProperty_LEFT_TO_RIGHT;

}

css::i18n::UnicodeScript CharClass::getScript( const OUString& rStr, sal_Int32 nPos ) const

{

    try

    {

        return static_cast<css::i18n::UnicodeScript>(xCC->getScript( rStr, nPos ));

    }

    catch ( const Exception& )

    {

        TOOLS_WARN_EXCEPTION("unotools.i18n", "" );

    }

    return UnicodeScript_kBasicLatin;

}

sal_Int32 CharClass::getCharacterType( const OUString& rStr, sal_Int32 nPos ) const

{

    try

    {

        return xCC->getCharacterType( rStr, nPos, getMyLocale() );

    }

    catch ( const Exception& )

    {

        TOOLS_WARN_EXCEPTION("unotools.i18n", "" );

    }

    return 0;

}

css::i18n::ParseResult CharClass::parseAnyToken(

            const OUString& rStr,

            sal_Int32 nPos,

            sal_Int32 nStartCharFlags,

            const OUString& userDefinedCharactersStart,

            sal_Int32 nContCharFlags,

            const OUString& userDefinedCharactersCont ) const

{

    try

    {

        return xCC->parseAnyToken( rStr, nPos, getMyLocale(),

                nStartCharFlags, userDefinedCharactersStart,

                nContCharFlags, userDefinedCharactersCont );

    }

    catch ( const Exception& )

    {

        TOOLS_WARN_EXCEPTION( "unotools.i18n", "parseAnyToken" );

    }

    return ParseResult();

}

css::i18n::ParseResult CharClass::parsePredefinedToken(

            sal_Int32 nTokenType,

            const OUString& rStr,

            sal_Int32 nPos,

            sal_Int32 nStartCharFlags,

            const OUString& userDefinedCharactersStart,

            sal_Int32 nContCharFlags,

            const OUString& userDefinedCharactersCont ) const

{

    try

    {

        return xCC->parsePredefinedToken( nTokenType, rStr, nPos, getMyLocale(),

                nStartCharFlags, userDefinedCharactersStart,

                nContCharFlags, userDefinedCharactersCont );

    }

    catch ( const Exception& )

    {

        TOOLS_WARN_EXCEPTION( "unotools.i18n", "parsePredefinedToken" );

    }

    return ParseResult();

}

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