1*cdf0e10cSrcweir /************************************************************************* 2*cdf0e10cSrcweir * 3*cdf0e10cSrcweir * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4*cdf0e10cSrcweir * 5*cdf0e10cSrcweir * Copyright 2000, 2010 Oracle and/or its affiliates. 6*cdf0e10cSrcweir * 7*cdf0e10cSrcweir * OpenOffice.org - a multi-platform office productivity suite 8*cdf0e10cSrcweir * 9*cdf0e10cSrcweir * This file is part of OpenOffice.org. 10*cdf0e10cSrcweir * 11*cdf0e10cSrcweir * OpenOffice.org is free software: you can redistribute it and/or modify 12*cdf0e10cSrcweir * it under the terms of the GNU Lesser General Public License version 3 13*cdf0e10cSrcweir * only, as published by the Free Software Foundation. 14*cdf0e10cSrcweir * 15*cdf0e10cSrcweir * OpenOffice.org is distributed in the hope that it will be useful, 16*cdf0e10cSrcweir * but WITHOUT ANY WARRANTY; without even the implied warranty of 17*cdf0e10cSrcweir * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18*cdf0e10cSrcweir * GNU Lesser General Public License version 3 for more details 19*cdf0e10cSrcweir * (a copy is included in the LICENSE file that accompanied this code). 20*cdf0e10cSrcweir * 21*cdf0e10cSrcweir * You should have received a copy of the GNU Lesser General Public License 22*cdf0e10cSrcweir * version 3 along with OpenOffice.org. If not, see 23*cdf0e10cSrcweir * <http://www.openoffice.org/license.html> 24*cdf0e10cSrcweir * for a copy of the LGPLv3 License. 25*cdf0e10cSrcweir * 26*cdf0e10cSrcweir ************************************************************************/ 27*cdf0e10cSrcweir #ifndef _XMLSEARCH_UTIL_DECOMPRESSOR_HXX_ 28*cdf0e10cSrcweir #define _XMLSEARCH_UTIL_DECOMPRESSOR_HXX_ 29*cdf0e10cSrcweir 30*cdf0e10cSrcweir #ifndef INCLUDED_STL_VECTOR 31*cdf0e10cSrcweir #include <vector> 32*cdf0e10cSrcweir #define INCLUDED_STL_VECTOR 33*cdf0e10cSrcweir #endif 34*cdf0e10cSrcweir #include <excep/XmlSearchExceptions.hxx> 35*cdf0e10cSrcweir #include <util/RandomAccessStream.hxx> 36*cdf0e10cSrcweir 37*cdf0e10cSrcweir 38*cdf0e10cSrcweir namespace xmlsearch { 39*cdf0e10cSrcweir 40*cdf0e10cSrcweir namespace util { 41*cdf0e10cSrcweir 42*cdf0e10cSrcweir 43*cdf0e10cSrcweir class CompressorIterator; 44*cdf0e10cSrcweir 45*cdf0e10cSrcweir 46*cdf0e10cSrcweir class Decompressor 47*cdf0e10cSrcweir { 48*cdf0e10cSrcweir public: 49*cdf0e10cSrcweir 50*cdf0e10cSrcweir Decompressor() 51*cdf0e10cSrcweir : toRead_( 0 ), 52*cdf0e10cSrcweir path_( 0 ) 53*cdf0e10cSrcweir { 54*cdf0e10cSrcweir } 55*cdf0e10cSrcweir 56*cdf0e10cSrcweir virtual ~Decompressor() { } 57*cdf0e10cSrcweir 58*cdf0e10cSrcweir virtual sal_Int32 getNextByte() = 0; 59*cdf0e10cSrcweir 60*cdf0e10cSrcweir virtual void initReading() 61*cdf0e10cSrcweir { 62*cdf0e10cSrcweir toRead_ = 0; 63*cdf0e10cSrcweir } 64*cdf0e10cSrcweir 65*cdf0e10cSrcweir private: 66*cdf0e10cSrcweir 67*cdf0e10cSrcweir static const sal_Int32 BitsInByte; 68*cdf0e10cSrcweir static const sal_Int32 NBits; 69*cdf0e10cSrcweir 70*cdf0e10cSrcweir sal_Int32 readByte_, toRead_, path_; 71*cdf0e10cSrcweir }; 72*cdf0e10cSrcweir 73*cdf0e10cSrcweir 74*cdf0e10cSrcweir 75*cdf0e10cSrcweir 76*cdf0e10cSrcweir class StreamDecompressor 77*cdf0e10cSrcweir : public Decompressor 78*cdf0e10cSrcweir { 79*cdf0e10cSrcweir public: 80*cdf0e10cSrcweir 81*cdf0e10cSrcweir StreamDecompressor( RandomAccessStream* in ) 82*cdf0e10cSrcweir : in_( in ) 83*cdf0e10cSrcweir { 84*cdf0e10cSrcweir } 85*cdf0e10cSrcweir 86*cdf0e10cSrcweir ~StreamDecompressor() { } 87*cdf0e10cSrcweir 88*cdf0e10cSrcweir 89*cdf0e10cSrcweir virtual sal_Int32 getNextByte(); 90*cdf0e10cSrcweir 91*cdf0e10cSrcweir private: 92*cdf0e10cSrcweir 93*cdf0e10cSrcweir RandomAccessStream* in_; 94*cdf0e10cSrcweir 95*cdf0e10cSrcweir }; 96*cdf0e10cSrcweir 97*cdf0e10cSrcweir 98*cdf0e10cSrcweir 99*cdf0e10cSrcweir class ByteArrayDecompressor 100*cdf0e10cSrcweir : public Decompressor 101*cdf0e10cSrcweir { 102*cdf0e10cSrcweir public: 103*cdf0e10cSrcweir 104*cdf0e10cSrcweir ByteArrayDecompressor( sal_Int32 arrayL,sal_Int8* array,sal_Int32 index ) 105*cdf0e10cSrcweir { 106*cdf0e10cSrcweir initReading(array,arrayL,index); 107*cdf0e10cSrcweir } 108*cdf0e10cSrcweir 109*cdf0e10cSrcweir 110*cdf0e10cSrcweir ~ByteArrayDecompressor() { } 111*cdf0e10cSrcweir 112*cdf0e10cSrcweir sal_Int32 bytesRead() 113*cdf0e10cSrcweir { 114*cdf0e10cSrcweir return index_ - index0_; 115*cdf0e10cSrcweir } 116*cdf0e10cSrcweir 117*cdf0e10cSrcweir 118*cdf0e10cSrcweir sal_Int32 getNextByte() throw( xmlsearch::excep::XmlSearchException ) 119*cdf0e10cSrcweir { 120*cdf0e10cSrcweir if( arrayL_ <= index_ ) 121*cdf0e10cSrcweir throw xmlsearch::excep::XmlSearchException( 122*cdf0e10cSrcweir rtl::OUString::createFromAscii( "ByteArrayDecompressor->getNextByte()" ) ); 123*cdf0e10cSrcweir return array_[index_++] & 0xFF; 124*cdf0e10cSrcweir } 125*cdf0e10cSrcweir 126*cdf0e10cSrcweir 127*cdf0e10cSrcweir private: 128*cdf0e10cSrcweir 129*cdf0e10cSrcweir sal_Int32 arrayL_; 130*cdf0e10cSrcweir sal_Int8 *array_; 131*cdf0e10cSrcweir 132*cdf0e10cSrcweir sal_Int32 index_,index0_; 133*cdf0e10cSrcweir 134*cdf0e10cSrcweir using xmlsearch::util::Decompressor::initReading; 135*cdf0e10cSrcweir void initReading( sal_Int8* array,sal_Int32 arrayL,sal_Int32 index ) 136*cdf0e10cSrcweir { 137*cdf0e10cSrcweir arrayL_ = arrayL; 138*cdf0e10cSrcweir array_ = array; 139*cdf0e10cSrcweir index_ = index0_ = index; 140*cdf0e10cSrcweir Decompressor::initReading(); 141*cdf0e10cSrcweir } 142*cdf0e10cSrcweir 143*cdf0e10cSrcweir }; 144*cdf0e10cSrcweir 145*cdf0e10cSrcweir 146*cdf0e10cSrcweir } 147*cdf0e10cSrcweir 148*cdf0e10cSrcweir } 149*cdf0e10cSrcweir 150*cdf0e10cSrcweir 151*cdf0e10cSrcweir #endif 152