1 /************************************************************************* 2 * 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * Copyright 2000, 2010 Oracle and/or its affiliates. 6 * 7 * OpenOffice.org - a multi-platform office productivity suite 8 * 9 * This file is part of OpenOffice.org. 10 * 11 * OpenOffice.org is free software: you can redistribute it and/or modify 12 * it under the terms of the GNU Lesser General Public License version 3 13 * only, as published by the Free Software Foundation. 14 * 15 * OpenOffice.org is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU Lesser General Public License version 3 for more details 19 * (a copy is included in the LICENSE file that accompanied this code). 20 * 21 * You should have received a copy of the GNU Lesser General Public License 22 * version 3 along with OpenOffice.org. If not, see 23 * <http://www.openoffice.org/license.html> 24 * for a copy of the LGPLv3 License. 25 * 26 ************************************************************************/ 27 28 // MARKER(update_precomp.py): autogen include statement, do not remove 29 #include "precompiled_xmlhelp.hxx" 30 #include <util/Decompressor.hxx> 31 #include <util/CompressorIterator.hxx> 32 33 using namespace xmlsearch; 34 using namespace xmlsearch::util; 35 36 const sal_Int32 Decompressor::BitsInByte = 8; 37 const sal_Int32 Decompressor::NBits = 32; 38 39 inline sal_Int32 getInteger_( const sal_Int8* v ) 40 { 41 return (((((( (v[0]&0xFF) ) << 8 ) 42 | (v[1]&0xFF) ) << 8 ) 43 | (v[2]&0xFF) ) << 8 ) 44 | (v[3]&0xFF); 45 } 46 47 sal_Int32 StreamDecompressor::getNextByte() 48 { 49 sal_Int8 a[4]; 50 a[0] = a[1] = a[2] = 0; 51 if( in_->readBytes( &a[3],1 ) != -1 ) 52 return getInteger_( a ); 53 else 54 return -1; 55 } 56