From db4e8a77ce6ad9a7f742574a6c01121675bd8c9c Mon Sep 17 00:00:00 2001 From: Martin Gallwey Date: Mon, 13 Nov 2000 12:38:03 +0000 Subject: Initial Revision :D --- package/source/zipapi/Deflater.cxx | 303 +++++++++++++++++++++++++++++++++++++ 1 file changed, 303 insertions(+) create mode 100644 package/source/zipapi/Deflater.cxx (limited to 'package/source/zipapi/Deflater.cxx') diff --git a/package/source/zipapi/Deflater.cxx b/package/source/zipapi/Deflater.cxx new file mode 100644 index 000000000000..3bcff5fd2971 --- /dev/null +++ b/package/source/zipapi/Deflater.cxx @@ -0,0 +1,303 @@ +/************************************************************************* + * + * $RCSfile: Deflater.cxx,v $ + * + * $Revision: 1.1 $ + * + * last change: $Author: mtg $ $Date: 2000-11-13 13:38:01 $ + * + * The Contents of this file are made available subject to the terms of + * either of the following licenses + * + * - 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 + * License version 2.1, as published by the Free Software Foundation. + * + * This library 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 for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * 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. + * + * Software provided under this License is provided on an "AS IS" basis, + * WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, + * WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS, + * MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING. + * See the License for the specific provisions governing your rights and + * obligations concerning the Software. + * + * The Initial Developer of the Original Code is: Sun Microsystems, Inc. + * + * Copyright: 2000 by Sun Microsystems, Inc. + * + * All Rights Reserved. + * + * Contributor(s): _______________________________________ + * + * + ************************************************************************/ +#ifndef _DEFLATER_HXX_ +#include "Deflater.hxx" +#endif + +#ifndef _TOOLS_DEBUG_HXX +#include +#endif + +#include +#include + +using namespace com::sun::star::package::ZipConstants; +using namespace com::sun::star; + +/** Provides general purpose compression using the ZLIB compression + * library. + */ + +Deflater::~Deflater(void) +{ + if (pStream) + delete pStream; +} +void Deflater::init (sal_Int16 nLevel, sal_Int16 nStrategy, sal_Bool bNowrap) +{ + pStream = new z_stream; + /* Memset it to 0...sets zalloc/zfree/opaque to NULL */ + memset (pStream, 0, sizeof(*pStream)); + + switch (deflateInit2(pStream, nLevel, Z_DEFLATED, bNowrap? -MAX_WBITS : MAX_WBITS, + DEF_MEM_LEVEL, nStrategy)) + { + case Z_OK: + break; + case Z_MEM_ERROR: + delete pStream; + break; + case Z_STREAM_ERROR: + delete pStream; + break; + default: + break; + } +} +Deflater::Deflater() +: nLevel(DEFAULT_COMPRESSION) +, nStrategy(DEFAULT_STRATEGY) +, bFinish(sal_False) +, bFinished(sal_False) +, bSetParams(sal_False) +, nOffset(0) +, nLength(0) +{ + init(DEFAULT_COMPRESSION, DEFAULT_STRATEGY, sal_False); +} + +Deflater::Deflater(sal_Int16 nSetLevel) +: nLevel(nSetLevel) +, nStrategy(DEFAULT_STRATEGY) +, bFinish(sal_False) +, bFinished(sal_False) +, bSetParams(sal_False) +, nOffset(0) +, nLength(0) +{ + init(nSetLevel, DEFAULT_STRATEGY, sal_False); +} + +Deflater::Deflater(sal_Int16 nSetLevel, sal_Bool bNowrap) +: nLevel(nSetLevel) +, nStrategy(DEFAULT_STRATEGY) +, bFinish(sal_False) +, bFinished(sal_False) +, bSetParams(sal_False) +, nOffset(0) +, nLength(0) +{ + init(nSetLevel, DEFAULT_STRATEGY, bNowrap); +} + +sal_Int16 Deflater::doDeflateBytes (uno::Sequence < sal_Int8 > &rBuffer, sal_Int16 nNewOffset, sal_Int16 nNewLength) +{ + sal_Int16 nResult; + if (bSetParams) + { + nResult = z_deflateParams(pStream, nLevel, nStrategy); + bSetParams = sal_False; + } + pStream->next_in = (unsigned char*) sInBuffer.getConstArray(); + pStream->next_out = (unsigned char*) rBuffer.getArray()+nNewOffset; + pStream->avail_in = nLength; + pStream->avail_out = nNewLength; + + + nResult = z_deflate(pStream, Z_FINISH); + switch (nResult) + { + case Z_STREAM_END: + bFinished = sal_True; + case Z_OK: + nOffset += nLength - pStream->avail_in; + nLength = pStream->avail_in; + return nNewLength - pStream->avail_out; + case Z_BUF_ERROR: + bSetParams = sal_False; + DBG_ERROR( pStream->msg ); + return 0; + default: + DBG_ERROR( pStream->msg ); + return 0; + } + return 0; +} + +void SAL_CALL Deflater::setInputSegment( const uno::Sequence< sal_Int8 >& rBuffer, sal_Int32 nNewOffset, sal_Int32 nNewLength ) + throw(uno::RuntimeException) +{ + if (nNewOffset < 0 || nNewLength < 0 || nNewOffset + nNewLength > rBuffer.getLength()) + DBG_ERROR("Invalid parameters to Deflater::setInputSegment!"); + + sInBuffer = rBuffer; + nOffset = nNewOffset; + nLength = nNewLength; +} +void SAL_CALL Deflater::setInput( const uno::Sequence< sal_Int8 >& rBuffer ) + throw(uno::RuntimeException) +{ + sInBuffer = rBuffer; + nOffset = 0; + nLength = rBuffer.getLength(); +} +void SAL_CALL Deflater::setDictionarySegment( const uno::Sequence< sal_Int8 >& rBuffer, sal_Int32 nNewOffset, sal_Int32 nNewLength ) + throw(uno::RuntimeException) +{ + if (pStream == NULL) + { + // do error handling + DBG_ERROR("No stream!"); + } + if (nNewOffset < 0 || nNewLength < 0 || nNewOffset + nNewLength > rBuffer.getLength()) + { + // do error handling + } + sal_Int16 nResult = z_deflateSetDictionary(pStream, (const unsigned char*)rBuffer.getConstArray()+nOffset, nLength); +} +void SAL_CALL Deflater::setDictionary( const uno::Sequence< sal_Int8 >& rBuffer ) + throw(uno::RuntimeException) +{ + if (pStream == NULL) + { + // do error handling + DBG_ERROR("No stream!"); + + } + sal_Int16 nResult = z_deflateSetDictionary(pStream, (const unsigned char*)rBuffer.getConstArray(), rBuffer.getLength()); +} +void SAL_CALL Deflater::setStrategy( sal_Int32 nNewStrategy ) + throw(uno::RuntimeException) +{ + if (nNewStrategy != DEFAULT_STRATEGY && + nNewStrategy != FILTERED && + nNewStrategy != HUFFMAN_ONLY) + { + // do error handling + } + if (nStrategy != nNewStrategy) + { + nStrategy = nNewStrategy; + bSetParams = sal_True; + } +} +void SAL_CALL Deflater::setLevel( sal_Int32 nNewLevel ) + throw(uno::RuntimeException) +{ + if ((nNewLevel < 0 || nNewLevel > 9) && nNewLevel != DEFAULT_COMPRESSION) + { + // do error handling + } + if (nNewLevel != nLevel) + { + nLevel = nNewLevel; + bSetParams = sal_True; + } +} +sal_Bool SAL_CALL Deflater::needsInput( ) + throw(uno::RuntimeException) +{ + return nLength <=0; +} +void SAL_CALL Deflater::finish( ) + throw(uno::RuntimeException) +{ + bFinish = sal_True; +} +sal_Bool SAL_CALL Deflater::finished( ) + throw(uno::RuntimeException) +{ + return bFinished; +} +sal_Int32 SAL_CALL Deflater::doDeflateSegment( uno::Sequence< sal_Int8 >& rBuffer, sal_Int32 nNewOffset, sal_Int32 nNewLength ) + throw(uno::RuntimeException) +{ + if (nNewOffset < 0 || nNewLength < 0 || nNewOffset + nNewLength > rBuffer.getLength()) + { + // do error handling + } + return doDeflateBytes(rBuffer, nNewOffset, nNewLength); +} +sal_Int32 SAL_CALL Deflater::doDeflate( uno::Sequence< sal_Int8 >& rBuffer ) + throw(uno::RuntimeException) +{ + return doDeflateBytes(rBuffer, 0, rBuffer.getLength()); +} + +sal_Int32 SAL_CALL Deflater::getAdler( ) + throw(uno::RuntimeException) +{ + return pStream->adler; +} +sal_Int32 SAL_CALL Deflater::getTotalIn( ) + throw(uno::RuntimeException) +{ + return pStream->total_in; +} +sal_Int32 SAL_CALL Deflater::getTotalOut( ) + throw(uno::RuntimeException) +{ + return pStream->total_out; +} +void SAL_CALL Deflater::reset( ) + throw(uno::RuntimeException) +{ + z_deflateReset(pStream); + bFinish = sal_False; + bFinished = sal_False; + nOffset = nLength = 0; +} +void SAL_CALL Deflater::end( ) + throw(uno::RuntimeException) +{ + z_deflateEnd(pStream); + pStream = NULL; +} -- cgit