/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
 *
 *  The Contents of this file are made available subject to the terms of
 *  either of the following licenses
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 *         - GNU Lesser General Public License Version 2.1
 *         - Sun Industry Standards Source License Version 1.1
 *
 *  Sun Microsystems Inc., October, 2000
 *
 *  GNU Lesser General Public License Version 2.1
 *  =============================================
 *  Copyright 2000 by Sun Microsystems, Inc.
 *  901 San Antonio Road, Palo Alto, CA 94303, USA
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
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 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Lesser General Public License for more details.
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 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
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 *  MA  02111-1307  USA
 *
 *
 *  Sun Industry Standards Source License Version 1.1
 *  =================================================
 *  The contents of this file are subject to the Sun Industry Standards
 *  Source License Version 1.1 (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.openoffice.org/license.html.
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 *  WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
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 *  Copyright: 2008 by IBM Corporation
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 ************************************************************************/
#include "first.hxx"
#include <assert.h>
namespace OpenStormBento
{
/**
*   Value stream read function
*   @param  data pointer of bytes read
*   @param  number of bytes to be read
*   @return number of bytes read
*/
sal_uLong   LtcUtBenValueStream::GetData( void* pData, sal_uLong nSize )
{
    //unsigned long AmtLeft;
    unsigned long AmtRead;
    //GetAmountLeft(&AmtLeft);

    //unsigned long AmtShouldRead = UtMin(nSize, AmtLeft);
    /*BenError Err = */cpValue->ReadValueData(pData, cCurrentPosition, nSize,
      &AmtRead);
    cCurrentPosition += AmtRead;

    return AmtRead;
}
 /**
*   Value stream write function, not supported now
*   @param  pointer of saved buffer
*   @param  size of buffer to be written
*   @return number of bytes written into value stream
*/
sal_uLong   LtcUtBenValueStream::PutData( const void* /*pData*/, sal_uLong nSize )
{
    /* Because we only support IMPORT filter, PutData implementation is ignored
        It won't bring negative influence to read-only stream object */
    assert(false);
    return nSize;
}
/**
*   Seek function of value stream
*   @param  position in value stream
*   @return current position in value stream
*/
sal_uInt64  LtcUtBenValueStream::SeekPos(sal_uInt64 const nPos)
{
    if (nPos <= m_ulValueLength)
        cCurrentPosition = nPos;
    else
        cCurrentPosition = m_ulValueLength;
    return cCurrentPosition;
}
/**
*   Set buffer size function
*   @param  size of buffer
*   @return
*/
 void   LtcUtBenValueStream::SetSize( sal_uInt64 /*nSize*/ )
{
    //pLtcBenContainer pContainer = cpValue->GetContainer();
    //pContainer->GetStream()->SetStreamSize(nSize);

    return;
}
/**
*   Flush data funciton, not supported now
*/
void    LtcUtBenValueStream::FlushData()
{
    /* Because we only support IMPORT filter, FlushData implementation is ignored
        It won't bring negative influence to read-only stream object
    pLtcBenContainer pContainer = cpValue->GetContainer();
    pContainer->GetStream()->Flush();*/
    assert(false);
    return;
}
/**
*   Construction
*/
LtcUtBenValueStream::LtcUtBenValueStream(pCBenValue pValue)
{
    // Calculate the length of the whole value stream
    cCurrentPosition = 0;
    m_ulValueLength = pValue->GetValueSize();
    cpValue = pValue;
}

LtcUtBenValueStream::~LtcUtBenValueStream()
{
}

} // end namespace OpenStormBento

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