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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#ifndef _CACHESTR_HXX
#define _CACHESTR_HXX
#include <tools/stream.hxx>
#include <tools/string.hxx>
#include <tools/link.hxx>
#include "tools/toolsdllapi.h"
// -----------------
// - SvCacheStream -
// -----------------
class TempFile;
class TOOLS_DLLPUBLIC SvCacheStream : public SvStream
{
private:
String aFileName;
ULONG nMaxSize;
int bPersistent;
SvStream* pSwapStream;
SvStream* pCurrentStream;
TempFile* pTempFile;
Link aFilenameLinkHdl;
TOOLS_DLLPRIVATE virtual ULONG GetData( void* pData, ULONG nSize );
TOOLS_DLLPRIVATE virtual ULONG PutData( const void* pData, ULONG nSize );
TOOLS_DLLPRIVATE virtual ULONG SeekPos( ULONG nPos );
TOOLS_DLLPRIVATE virtual void FlushData();
TOOLS_DLLPRIVATE virtual void SetSize( ULONG nSize );
public:
SvCacheStream( ULONG nMaxMemSize = 0 );
SvCacheStream( const String &rFileName,
ULONG nExpectedSize = 0,
ULONG nMaxMemSize = 0 );
~SvCacheStream();
void SetFilenameHdl( const Link& rLink);
const Link& GetFilenameHdl() const;
void SetFilename( const String& rFN )
{ aFileName = rFN; } // darf nur vom FilenameHdl gerufen werden!
const String& GetFilename() const { return aFileName; }
void SwapOut();
const void* GetBuffer();
ULONG GetSize();
BOOL IsPersistent() { return bPersistent != 0; }
void SetPersistence( BOOL b = TRUE ) { bPersistent = b; }
void SetSwapStream( SvStream *p )
{ pSwapStream = p; } // darf nur vom FilenameHdl gerufen werden!
};
#endif
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