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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
* 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.
*
************************************************************************/
// INCLUDE ---------------------------------------------------------------
#include "rechead.hxx"
#include "scerrors.hxx"
// STATIC DATA -----------------------------------------------------------
// =======================================================================
ScMultipleReadHeader::ScMultipleReadHeader(SvStream& rNewStream) :
rStream( rNewStream )
{
sal_uInt32 nDataSize;
rStream >> nDataSize;
sal_uLong nDataPos = rStream.Tell();
nTotalEnd = nDataPos + nDataSize;
nEntryEnd = nTotalEnd;
rStream.SeekRel(nDataSize);
sal_uInt16 nID;
rStream >> nID;
if (nID != SCID_SIZES)
{
OSL_FAIL("SCID_SIZES nicht gefunden");
if ( rStream.GetError() == SVSTREAM_OK )
rStream.SetError( SVSTREAM_FILEFORMAT_ERROR );
// alles auf 0, damit BytesLeft() wenigstens abbricht
pBuf = NULL; pMemStream = NULL;
nEntryEnd = nDataPos;
}
else
{
sal_uInt32 nSizeTableLen;
rStream >> nSizeTableLen;
pBuf = new sal_uInt8[nSizeTableLen];
rStream.Read( pBuf, nSizeTableLen );
pMemStream = new SvMemoryStream( (char*)pBuf, nSizeTableLen, STREAM_READ );
}
nEndPos = rStream.Tell();
rStream.Seek( nDataPos );
}
ScMultipleReadHeader::~ScMultipleReadHeader()
{
if ( pMemStream && pMemStream->Tell() != pMemStream->GetEndOfData() )
{
OSL_FAIL( "Sizes nicht vollstaendig gelesen" );
if ( rStream.GetError() == SVSTREAM_OK )
rStream.SetError( SCWARN_IMPORT_INFOLOST );
}
delete pMemStream;
delete[] pBuf;
rStream.Seek(nEndPos);
}
void ScMultipleReadHeader::EndEntry()
{
sal_uLong nPos = rStream.Tell();
OSL_ENSURE( nPos <= nEntryEnd, "zuviel gelesen" );
if ( nPos != nEntryEnd )
{
if ( rStream.GetError() == SVSTREAM_OK )
rStream.SetError( SCWARN_IMPORT_INFOLOST );
rStream.Seek( nEntryEnd ); // Rest ueberspringen
}
nEntryEnd = nTotalEnd; // den ganzen Rest, wenn kein StartEntry kommt
}
void ScMultipleReadHeader::StartEntry()
{
sal_uLong nPos = rStream.Tell();
sal_uInt32 nEntrySize;
(*pMemStream) >> nEntrySize;
nEntryEnd = nPos + nEntrySize;
OSL_ENSURE( nEntryEnd <= nTotalEnd, "zuviele Eintraege gelesen" );
}
sal_uLong ScMultipleReadHeader::BytesLeft() const
{
sal_uLong nReadEnd = rStream.Tell();
if (nReadEnd <= nEntryEnd)
return nEntryEnd-nReadEnd;
OSL_FAIL("Fehler bei ScMultipleReadHeader::BytesLeft");
return 0;
}
// -----------------------------------------------------------------------
ScMultipleWriteHeader::ScMultipleWriteHeader(SvStream& rNewStream, sal_uInt32 nDefault) :
rStream( rNewStream ),
aMemStream( 4096, 4096 )
{
nDataSize = nDefault;
rStream << nDataSize;
nDataPos = rStream.Tell();
nEntryStart = nDataPos;
}
ScMultipleWriteHeader::~ScMultipleWriteHeader()
{
sal_uLong nDataEnd = rStream.Tell();
rStream << (sal_uInt16) SCID_SIZES;
rStream << static_cast<sal_uInt32>(aMemStream.Tell());
rStream.Write( aMemStream.GetData(), aMemStream.Tell() );
if ( nDataEnd - nDataPos != nDataSize ) // Default getroffen?
{
nDataSize = nDataEnd - nDataPos;
sal_uLong nPos = rStream.Tell();
rStream.Seek(nDataPos-sizeof(sal_uInt32));
rStream << nDataSize; // Groesse am Anfang eintragen
rStream.Seek(nPos);
}
}
void ScMultipleWriteHeader::EndEntry()
{
sal_uLong nPos = rStream.Tell();
aMemStream << static_cast<sal_uInt32>(nPos - nEntryStart);
}
void ScMultipleWriteHeader::StartEntry()
{
sal_uLong nPos = rStream.Tell();
nEntryStart = nPos;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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