/* -*- 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/.

 */

#ifndef INCLUDED_SVL_SHAREDSTRING_HXX

#define INCLUDED_SVL_SHAREDSTRING_HXX

#include <svl/svldllapi.h>

#include <rtl/ustring.hxx>

#include <utility>

namespace svl {

class SVL_DLLPUBLIC SharedString

{

    rtl_uString* mpData = nullptr;

    rtl_uString* mpDataIgnoreCase = nullptr;

public:

    static const SharedString & getEmptyString();

    static const OUString EMPTY_STRING;

    SharedString() = default;

    SharedString( rtl_uString* pData, rtl_uString* pDataIgnoreCase );

    explicit SharedString( const OUString& rStr );

    SharedString( const SharedString& r );

    SharedString(SharedString&& r) noexcept;

    ~SharedString();

    SharedString& operator= ( const SharedString& r );

    SharedString& operator=(SharedString&& r) noexcept;

    bool operator== ( const SharedString& r ) const;

    bool operator!= ( const SharedString& r ) const;

    const OUString & getString() const;

    const OUString & getIgnoreCaseString() const;

    rtl_uString* getData();

    const rtl_uString* getData() const;

    rtl_uString* getDataIgnoreCase();

    const rtl_uString* getDataIgnoreCase() const;

    bool isValid() const;

    bool isEmpty() const;

    sal_Int32 getLength() const;

};

inline SharedString::SharedString( rtl_uString* pData, rtl_uString* pDataIgnoreCase ) :

    mpData(pData), mpDataIgnoreCase(pDataIgnoreCase)

{

    if (mpData)

        rtl_uString_acquire(mpData);

    if (mpDataIgnoreCase)

        rtl_uString_acquire(mpDataIgnoreCase);

}

inline SharedString::SharedString( const OUString& rStr ) : mpData(rStr.pData)

{

    rtl_uString_acquire(mpData);

}

inline SharedString::SharedString( const SharedString& r ) : mpData(r.mpData), mpDataIgnoreCase(r.mpDataIgnoreCase)

{

    if (mpData)

        rtl_uString_acquire(mpData);

    if (mpDataIgnoreCase)

        rtl_uString_acquire(mpDataIgnoreCase);

}

inline SharedString::SharedString(SharedString&& r) noexcept

    : mpData(std::exchange(r.mpData, nullptr))

    , mpDataIgnoreCase(std::exchange(r.mpDataIgnoreCase, nullptr))

{

}

inline SharedString::~SharedString()

{

    if (mpData)

        rtl_uString_release(mpData);

    if (mpDataIgnoreCase)

        rtl_uString_release(mpDataIgnoreCase);

}

inline SharedString& SharedString::operator=(SharedString&& r) noexcept

{

    // Having this inline helps Calc's mdds::multi_type_vector to do some operations

    // much faster.

    if (mpData)

        rtl_uString_release(mpData);

    if (mpDataIgnoreCase)

        rtl_uString_release(mpDataIgnoreCase);

    mpData = std::exchange(r.mpData, nullptr);

    mpDataIgnoreCase = std::exchange(r.mpDataIgnoreCase, nullptr);

    return *this;

}

inline bool SharedString::operator!= ( const SharedString& r ) const

{

    return !operator== (r);

}

inline const OUString & SharedString::getString() const

{

    return mpData ? OUString::unacquired(&mpData) : EMPTY_STRING;

}

inline const OUString & SharedString::getIgnoreCaseString() const

{

    return mpDataIgnoreCase ? OUString::unacquired(&mpDataIgnoreCase) : EMPTY_STRING;

}

inline rtl_uString* SharedString::getData()

{

    return mpData;

}

inline const rtl_uString* SharedString::getData() const

{

    return mpData;

}

inline rtl_uString* SharedString::getDataIgnoreCase()

{

    return mpDataIgnoreCase;

}

inline const rtl_uString* SharedString::getDataIgnoreCase() const

{

    return mpDataIgnoreCase;

}

inline bool SharedString::isValid() const

{

    return mpData != nullptr;

}

inline bool SharedString::isEmpty() const

{

    return mpData == nullptr || mpData->length == 0;

}

inline sal_Int32 SharedString::getLength() const

{

    return mpData ? mpData->length : 0;

}

}

#endif

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