/* -*- 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>
#include <config_options.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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