362 lines
12 KiB
C++
362 lines
12 KiB
C++
/*************************************************************************
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*
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* $RCSfile: ZipOutputStream.cxx,v $
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*
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* $Revision: 1.2 $
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*
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* last change: $Author: mtg $ $Date: 2000-11-16 11:55:52 $
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*
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* The Contents of this file are made available subject to the terms of
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* either of the following licenses
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*
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* - GNU Lesser General Public License Version 2.1
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* - Sun Industry Standards Source License Version 1.1
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*
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* Sun Microsystems Inc., October, 2000
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*
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* GNU Lesser General Public License Version 2.1
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* =============================================
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* Copyright 2000 by Sun Microsystems, Inc.
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* 901 San Antonio Road, Palo Alto, CA 94303, USA
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License version 2.1, as published by the Free Software Foundation.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*
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*
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* Sun Industry Standards Source License Version 1.1
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* =================================================
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* The contents of this file are subject to the Sun Industry Standards
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* Source License Version 1.1 (the "License"); You may not use this file
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* except in compliance with the License. You may obtain a copy of the
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* License at http://www.openoffice.org/license.html.
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*
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* Software provided under this License is provided on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
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* WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
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* MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
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* See the License for the specific provisions governing your rights and
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* obligations concerning the Software.
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*
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* The Initial Developer of the Original Code is: Sun Microsystems, Inc.
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*
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* Copyright: 2000 by Sun Microsystems, Inc.
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*
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* All Rights Reserved.
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*
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* Contributor(s): _______________________________________
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*
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*
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************************************************************************/
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#ifndef _ZIP_OUTPUT_STREAM_HXX
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#include "ZipOutputStream.hxx"
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#endif
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using namespace rtl;
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using namespace com::sun::star;
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using namespace com::sun::star::package::ZipConstants;
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/** This class is used to write Zip files
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*/
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ZipOutputStream::ZipOutputStream( uno::Reference < io::XOutputStream > &xOStream, sal_Int32 nNewBufferSize)
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: xStream(xOStream)
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, aChucker(xOStream)
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, nMethod(DEFLATED)
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, pCurrentEntry(NULL)
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, bFinished(sal_False)
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, aBuffer(nNewBufferSize)
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, aDeflater(DEFAULT_COMPRESSION, sal_True)
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{
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}
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ZipOutputStream::~ZipOutputStream( void )
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{
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}
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void SAL_CALL ZipOutputStream::setComment( const ::rtl::OUString& rComment )
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throw(uno::RuntimeException)
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{
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sComment = rComment;
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}
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void SAL_CALL ZipOutputStream::setMethod( sal_Int32 nNewMethod )
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throw(uno::RuntimeException)
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{
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nMethod = nNewMethod;
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}
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void SAL_CALL ZipOutputStream::setLevel( sal_Int32 nNewLevel )
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throw(uno::RuntimeException)
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{
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aDeflater.setLevel( nNewLevel);
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}
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void SAL_CALL ZipOutputStream::putNextEntry( const package::ZipEntry& rEntry )
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throw(io::IOException, uno::RuntimeException)
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{
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package::ZipEntry *pNonConstEntry = const_cast < package::ZipEntry* >(&rEntry);
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if (pCurrentEntry != NULL)
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closeEntry();
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if (pNonConstEntry->nTime == -1)
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{
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Time aTime;
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aTime = Time();
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pNonConstEntry->nTime = aTime.GetTime();
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}
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if (pNonConstEntry->nMethod == -1)
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{
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pNonConstEntry->nMethod = nMethod;
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}
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switch (pNonConstEntry->nMethod)
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{
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case DEFLATED:
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if (pNonConstEntry->nSize == -1 || pNonConstEntry->nCompressedSize == -1 ||
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pNonConstEntry->nCrc == -1)
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pNonConstEntry->nFlag |= 8;
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else if (pNonConstEntry->nSize != -1 && pNonConstEntry->nCompressedSize != -1 &&
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pNonConstEntry->nCrc != -1)
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pNonConstEntry->nFlag &= 8;
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pNonConstEntry->nVersion = 20;
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break;
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case STORED:
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if (pNonConstEntry->nSize == -1)
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pNonConstEntry->nSize = pNonConstEntry->nCompressedSize;
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else if (pNonConstEntry->nCompressedSize == -1)
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pNonConstEntry->nCompressedSize = pNonConstEntry->nSize;
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pNonConstEntry->nVersion = 10;
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pNonConstEntry->nFlag &= 8;
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break;
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}
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pNonConstEntry->nOffset = aChucker.getPosition();
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writeLOC(rEntry);
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aZipList.push_back(*pNonConstEntry);
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pCurrentEntry=pNonConstEntry;
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}
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void SAL_CALL ZipOutputStream::close( )
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throw(io::IOException, uno::RuntimeException)
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{
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finish();
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}
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void SAL_CALL ZipOutputStream::closeEntry( )
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throw(io::IOException, uno::RuntimeException)
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{
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package::ZipEntry *pEntry = pCurrentEntry;
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if (pEntry)
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{
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switch (pEntry->nMethod)
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{
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case DEFLATED:
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aDeflater.finish();
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while (!aDeflater.finished())
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doDeflate();
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if ((pEntry->nFlag & 8) == 0)
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{
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if (pEntry->nSize != aDeflater.getTotalIn())
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{
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// boom
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DBG_ERROR("Invalid entry size");
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}
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if (pEntry->nCompressedSize != aDeflater.getTotalOut())
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{
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// boom
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DBG_ERROR("Invalid entry compressed size");
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}
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if (pEntry->nCrc != aCRC.getValue())
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{
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// boom
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DBG_ERROR("Invalid entry CRC-32");
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}
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}
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else
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{
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pEntry->nSize = aDeflater.getTotalIn();
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pEntry->nCompressedSize = aDeflater.getTotalOut();
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pEntry->nCrc = aCRC.getValue();
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writeEXT(*pEntry);
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}
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aDeflater.reset();
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break;
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case STORED:
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{
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sal_uInt32 na= pEntry->nCrc;
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sal_uInt32 nb = aCRC.getValue();
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int i=0;
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}
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if (static_cast < sal_uInt32 > (pEntry->nCrc) != static_cast <sal_uInt32> (aCRC.getValue()))
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{
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// boom
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DBG_ERROR("Invalid entry crc32");
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}
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break;
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default:
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// boom;
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DBG_ERROR("Invalid compression method");
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break;
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}
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aCRC.reset();
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pCurrentEntry = NULL;
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}
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}
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void SAL_CALL ZipOutputStream::write( const uno::Sequence< sal_Int8 >& rBuffer, sal_Int32 nNewOffset, sal_Int32 nNewLength )
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throw(io::IOException, uno::RuntimeException)
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{
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switch (pCurrentEntry->nMethod)
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{
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case DEFLATED:
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if (!aDeflater.finished())
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{
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aDeflater.setInputSegment(rBuffer, nNewOffset, nNewLength);
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while (!aDeflater.needsInput())
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doDeflate();
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}
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break;
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case STORED:
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aChucker.writeBytes(rBuffer);
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break;
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}
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aCRC.updateSegment(rBuffer, nNewOffset, nNewLength);
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}
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void SAL_CALL ZipOutputStream::finish( )
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throw(io::IOException, uno::RuntimeException)
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{
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if (bFinished)
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return;
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if (pCurrentEntry != NULL)
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closeEntry();
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if (aZipList.size() < 1)
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{
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// boom
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DBG_ERROR("Zip file must have at least one entry!\n");
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}
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sal_Int32 nOffset= aChucker.getPosition();
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for (int i =0, nEnd = aZipList.size(); i < nEnd; i++)
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writeCEN(aZipList[i]);
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writeEND( nOffset, aChucker.getPosition() - nOffset);
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bFinished = sal_True;
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}
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void ZipOutputStream::doDeflate()
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{
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sal_Int16 nLength = aDeflater.doDeflateSegment(aBuffer, 0, aBuffer.getLength());
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if (nLength > 0 )
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{
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aChucker.writeBytes(aBuffer);
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}
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}
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void ZipOutputStream::writeEND(sal_uInt32 nOffset, sal_uInt32 nLength)
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{
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sal_Int16 i=0, nCommentLength = sComment.getLength();
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const sal_Unicode *pChar = sComment.getStr();
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uno::Sequence < sal_Int8 > aSequence (nCommentLength);
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for ( ; i < nCommentLength; i++)
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{
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DBG_ASSERT (pChar[i] <127, "Non US ASCII character in zipfile comment!");
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aSequence[i] = static_cast < const sal_Int8 > (pChar[i]);
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}
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aChucker << ENDSIG;
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aChucker << static_cast < sal_Int16 > ( 0 );
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aChucker << static_cast < sal_Int16 > ( 0 );
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aChucker << static_cast < sal_Int16 > ( aZipList.size() );
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aChucker << static_cast < sal_Int16 > ( aZipList.size() );
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aChucker << nLength;
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aChucker << nOffset;
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aChucker << nCommentLength;
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if (nCommentLength)
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aChucker.writeBytes(aSequence);
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}
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void ZipOutputStream::writeCEN( const package::ZipEntry &rEntry )
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{
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sal_Int16 nNameLength = rEntry.sName.getLength(),
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nCommentLength = rEntry.sName.getLength(),
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nExtraLength = rEntry.extra.getLength(), i = 0;
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aChucker << CENSIG;
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aChucker << rEntry.nVersion;
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aChucker << rEntry.nVersion;
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aChucker << rEntry.nFlag;
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aChucker << rEntry.nMethod;
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aChucker << rEntry.nTime;
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aChucker << static_cast < sal_uInt32> (rEntry.nCrc);
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aChucker << rEntry.nCompressedSize;
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aChucker << rEntry.nSize;
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aChucker << nNameLength;
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aChucker << nExtraLength;
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aChucker << nCommentLength;
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aChucker << static_cast < sal_Int16> (0);
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aChucker << static_cast < sal_Int16> (0);
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aChucker << static_cast < sal_Int32> (0);
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aChucker << rEntry.nOffset;
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const sal_Unicode *pChar = rEntry.sName.getStr();
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uno::Sequence < sal_Int8 > aSequence (nNameLength);
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for ( ; i < nNameLength; i++)
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{
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DBG_ASSERT (pChar[i] <127, "Non US ASCII character in zipentry name!");
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aSequence[i] = static_cast < const sal_Int8 > (pChar[i]);
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}
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aChucker.writeBytes( aSequence );
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if (nExtraLength)
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aChucker.writeBytes( rEntry.extra);
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if (nCommentLength)
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{
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aSequence.realloc (nCommentLength);
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for (i=0, pChar = rEntry.sName.getStr(); i < nCommentLength; i++)
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{
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DBG_ASSERT (pChar[i] <127, "Non US ASCII character in zipentry comment!");
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aSequence[i] = static_cast < const sal_Int8 > (pChar[i]);
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}
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aChucker.writeBytes( aSequence );
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}
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}
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void ZipOutputStream::writeEXT( const package::ZipEntry &rEntry )
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{
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aChucker << EXTSIG;
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aChucker << rEntry.nCrc;
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aChucker << rEntry.nCompressedSize;
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aChucker << rEntry.nSize;
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}
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void ZipOutputStream::writeLOC( const package::ZipEntry &rEntry )
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{
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sal_Int16 nNameLength = rEntry.sName.getLength(), i=0;
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aChucker << LOCSIG;
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aChucker << rEntry.nVersion;
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aChucker << rEntry.nFlag;
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aChucker << rEntry.nMethod;
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aChucker << rEntry.nTime;
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if ((rEntry.nFlag & 8) == 8 )
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{
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aChucker << static_cast < sal_Int32 > (0);
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aChucker << static_cast < sal_Int32 > (0);
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aChucker << static_cast < sal_Int32 > (0);
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}
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else
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{
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aChucker << static_cast < sal_uInt32 > (rEntry.nCrc);
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aChucker << rEntry.nCompressedSize;
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aChucker << rEntry.nSize;
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}
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aChucker << nNameLength;
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aChucker << static_cast <sal_Int16 > ( rEntry.extra.getLength());
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const sal_Unicode *pChar = rEntry.sName.getStr();
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uno::Sequence < sal_Int8 > aSequence (nNameLength);
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for ( ; i < nNameLength; i++)
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{
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DBG_ASSERT (pChar[i] <127, "Non US ASCII character in zipentry name!");
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aSequence[i] = static_cast < const sal_Int8 > (pChar[i]);
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}
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aChucker.writeBytes( aSequence );
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if (rEntry.extra.getLength() != 0)
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aChucker.writeBytes( rEntry.extra );
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}
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