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authorMartin Gallwey <mtg@openoffice.org>2000-11-13 12:38:03 +0000
committerMartin Gallwey <mtg@openoffice.org>2000-11-13 12:38:03 +0000
commitdb4e8a77ce6ad9a7f742574a6c01121675bd8c9c (patch)
tree5db30bcc8150595546941efc88ed432c6c7d3fb1 /package/source/zipapi/Deflater.cxx
parente1f02829a365c86e711bdc8141c8308e60bcfd45 (diff)
Initial Revision :D
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diff --git a/package/source/zipapi/Deflater.cxx b/package/source/zipapi/Deflater.cxx
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+/*************************************************************************
+ *
+ * $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 <tools/debug.hxx>
+#endif
+
+#include <iostream.h>
+#include <string.h>
+
+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;
+}