87cb3a7c96
Which makes bSetParams always false; remove that too, together with nLevel. Change-Id: I94a4ec14b2b2c498d749ef72c1b6b118bba37076
151 lines
4.2 KiB
C++
151 lines
4.2 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include <package/Deflater.hxx>
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#include <zlib.h>
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#include <com/sun/star/packages/zip/ZipConstants.hpp>
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#include <string.h>
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using namespace com::sun::star::packages::zip::ZipConstants;
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using namespace com::sun::star;
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using namespace ZipUtils;
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/** Provides general purpose compression using the ZLIB compression
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* library.
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*/
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Deflater::~Deflater(void)
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{
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end();
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}
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void Deflater::init (sal_Int32 nLevelArg, sal_Int32 nStrategyArg, bool bNowrap)
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{
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pStream = new z_stream;
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/* Memset it to 0...sets zalloc/zfree/opaque to NULL */
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memset (pStream, 0, sizeof(*pStream));
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switch (deflateInit2(pStream, nLevelArg, Z_DEFLATED, bNowrap? -MAX_WBITS : MAX_WBITS,
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DEF_MEM_LEVEL, nStrategyArg))
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{
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case Z_OK:
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break;
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case Z_MEM_ERROR:
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delete pStream;
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break;
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case Z_STREAM_ERROR:
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delete pStream;
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break;
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default:
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break;
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}
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}
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Deflater::Deflater(sal_Int32 nSetLevel, bool bNowrap)
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: bFinish(false)
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, bFinished(false)
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, nStrategy(DEFAULT_STRATEGY)
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, nOffset(0)
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, nLength(0)
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{
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init(nSetLevel, DEFAULT_STRATEGY, bNowrap);
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}
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sal_Int32 Deflater::doDeflateBytes (uno::Sequence < sal_Int8 > &rBuffer, sal_Int32 nNewOffset, sal_Int32 nNewLength)
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{
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sal_Int32 nResult;
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pStream->next_in = (unsigned char*) sInBuffer.getConstArray() + nOffset;
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pStream->next_out = (unsigned char*) rBuffer.getArray()+nNewOffset;
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pStream->avail_in = nLength;
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pStream->avail_out = nNewLength;
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#if !defined Z_PREFIX
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nResult = deflate(pStream, bFinish ? Z_FINISH : Z_NO_FLUSH);
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#else
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nResult = z_deflate(pStream, bFinish ? Z_FINISH : Z_NO_FLUSH);
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#endif
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switch (nResult)
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{
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case Z_STREAM_END:
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bFinished = true;
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case Z_OK:
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nOffset += nLength - pStream->avail_in;
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nLength = pStream->avail_in;
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return nNewLength - pStream->avail_out;
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default:
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return 0;
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}
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}
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void SAL_CALL Deflater::setInputSegment( const uno::Sequence< sal_Int8 >& rBuffer, sal_Int32 nNewOffset, sal_Int32 nNewLength )
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{
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OSL_ASSERT( !(nNewOffset < 0 || nNewLength < 0 || nNewOffset + nNewLength > rBuffer.getLength()));
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sInBuffer = rBuffer;
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nOffset = nNewOffset;
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nLength = nNewLength;
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}
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bool SAL_CALL Deflater::needsInput( )
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{
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return nLength <=0;
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}
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void SAL_CALL Deflater::finish( )
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{
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bFinish = true;
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}
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sal_Int32 SAL_CALL Deflater::doDeflateSegment( uno::Sequence< sal_Int8 >& rBuffer, sal_Int32 nNewOffset, sal_Int32 nNewLength )
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{
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OSL_ASSERT( !(nNewOffset < 0 || nNewLength < 0 || nNewOffset + nNewLength > rBuffer.getLength()));
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return doDeflateBytes(rBuffer, nNewOffset, nNewLength);
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}
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sal_Int64 SAL_CALL Deflater::getTotalIn( )
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{
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return pStream->total_in; // FIXME64: zlib doesn't look 64bit clean here
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}
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sal_Int64 SAL_CALL Deflater::getTotalOut( )
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{
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return pStream->total_out; // FIXME64: zlib doesn't look 64bit clean here
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}
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void SAL_CALL Deflater::reset( )
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{
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#if !defined Z_PREFIX
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deflateReset(pStream);
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#else
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z_deflateReset(pStream);
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#endif
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bFinish = false;
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bFinished = false;
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nOffset = nLength = 0;
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}
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void SAL_CALL Deflater::end( )
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{
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if (pStream != NULL)
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{
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#if !defined Z_PREFIX
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deflateEnd(pStream);
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#else
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z_deflateEnd(pStream);
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#endif
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delete pStream;
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}
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pStream = NULL;
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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