/* -*- 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 .

 */

#ifndef INCLUDED_TOOLS_VCOMPAT_HXX

#define INCLUDED_TOOLS_VCOMPAT_HXX

#include <tools/toolsdllapi.h>

inline sal_uInt32 COMPAT_FORMAT(char char1, char char2, char char3, char char4)

{

    return static_cast<sal_uInt32>(char1) | (static_cast<sal_uInt32>(char2) << 8)

           | (static_cast<sal_uInt32>(char3) << 16) | (static_cast<sal_uInt32>(char4) << 24);

};

class SvStream;

class TOOLS_DLLPUBLIC VersionCompatRead

{

    SvStream& mrRStm;

    sal_uInt32 mnCompatPos;

    sal_uInt32 mnTotalSize;

    sal_uInt16 mnVersion;

    VersionCompatRead(const VersionCompatRead&) = delete;

    VersionCompatRead& operator=(const VersionCompatRead&) = delete;

public:

    VersionCompatRead(SvStream& rStm);

    ~VersionCompatRead();

    sal_uInt16 GetVersion() const { return mnVersion; }

};

class TOOLS_DLLPUBLIC VersionCompatWrite

{

    SvStream& mrWStm;

    sal_uInt32 mnCompatPos;

    sal_uInt32 mnTotalSize;

    VersionCompatWrite(const VersionCompatWrite&) = delete;

    VersionCompatWrite& operator=(const VersionCompatWrite&) = delete;

public:

    VersionCompatWrite(SvStream& rStm, sal_uInt16 nVersion = 1);

    ~VersionCompatWrite();

};

#endif

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