1*7b6bd0c4SAndrew Rist /************************************************************** 2cdf0e10cSrcweir * 3*7b6bd0c4SAndrew Rist * Licensed to the Apache Software Foundation (ASF) under one 4*7b6bd0c4SAndrew Rist * or more contributor license agreements. See the NOTICE file 5*7b6bd0c4SAndrew Rist * distributed with this work for additional information 6*7b6bd0c4SAndrew Rist * regarding copyright ownership. The ASF licenses this file 7*7b6bd0c4SAndrew Rist * to you under the Apache License, Version 2.0 (the 8*7b6bd0c4SAndrew Rist * "License"); you may not use this file except in compliance 9*7b6bd0c4SAndrew Rist * with the License. You may obtain a copy of the License at 10*7b6bd0c4SAndrew Rist * 11*7b6bd0c4SAndrew Rist * http://www.apache.org/licenses/LICENSE-2.0 12*7b6bd0c4SAndrew Rist * 13*7b6bd0c4SAndrew Rist * Unless required by applicable law or agreed to in writing, 14*7b6bd0c4SAndrew Rist * software distributed under the License is distributed on an 15*7b6bd0c4SAndrew Rist * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16*7b6bd0c4SAndrew Rist * KIND, either express or implied. See the License for the 17*7b6bd0c4SAndrew Rist * specific language governing permissions and limitations 18*7b6bd0c4SAndrew Rist * under the License. 19*7b6bd0c4SAndrew Rist * 20*7b6bd0c4SAndrew Rist *************************************************************/ 21*7b6bd0c4SAndrew Rist 22*7b6bd0c4SAndrew Rist 23cdf0e10cSrcweir #ifndef _XMLSEARCH_UTIL_DECOMPRESSOR_HXX_ 24cdf0e10cSrcweir #define _XMLSEARCH_UTIL_DECOMPRESSOR_HXX_ 25cdf0e10cSrcweir 26cdf0e10cSrcweir #ifndef INCLUDED_STL_VECTOR 27cdf0e10cSrcweir #include <vector> 28cdf0e10cSrcweir #define INCLUDED_STL_VECTOR 29cdf0e10cSrcweir #endif 30cdf0e10cSrcweir #include <excep/XmlSearchExceptions.hxx> 31cdf0e10cSrcweir #include <util/RandomAccessStream.hxx> 32cdf0e10cSrcweir 33cdf0e10cSrcweir 34cdf0e10cSrcweir namespace xmlsearch { 35cdf0e10cSrcweir 36cdf0e10cSrcweir namespace util { 37cdf0e10cSrcweir 38cdf0e10cSrcweir 39cdf0e10cSrcweir class CompressorIterator; 40cdf0e10cSrcweir 41cdf0e10cSrcweir 42cdf0e10cSrcweir class Decompressor 43cdf0e10cSrcweir { 44cdf0e10cSrcweir public: 45cdf0e10cSrcweir Decompressor()46cdf0e10cSrcweir Decompressor() 47cdf0e10cSrcweir : toRead_( 0 ), 48cdf0e10cSrcweir path_( 0 ) 49cdf0e10cSrcweir { 50cdf0e10cSrcweir } 51cdf0e10cSrcweir ~Decompressor()52cdf0e10cSrcweir virtual ~Decompressor() { } 53cdf0e10cSrcweir 54cdf0e10cSrcweir virtual sal_Int32 getNextByte() = 0; 55cdf0e10cSrcweir initReading()56cdf0e10cSrcweir virtual void initReading() 57cdf0e10cSrcweir { 58cdf0e10cSrcweir toRead_ = 0; 59cdf0e10cSrcweir } 60cdf0e10cSrcweir 61cdf0e10cSrcweir private: 62cdf0e10cSrcweir 63cdf0e10cSrcweir static const sal_Int32 BitsInByte; 64cdf0e10cSrcweir static const sal_Int32 NBits; 65cdf0e10cSrcweir 66cdf0e10cSrcweir sal_Int32 readByte_, toRead_, path_; 67cdf0e10cSrcweir }; 68cdf0e10cSrcweir 69cdf0e10cSrcweir 70cdf0e10cSrcweir 71cdf0e10cSrcweir 72cdf0e10cSrcweir class StreamDecompressor 73cdf0e10cSrcweir : public Decompressor 74cdf0e10cSrcweir { 75cdf0e10cSrcweir public: 76cdf0e10cSrcweir StreamDecompressor(RandomAccessStream * in)77cdf0e10cSrcweir StreamDecompressor( RandomAccessStream* in ) 78cdf0e10cSrcweir : in_( in ) 79cdf0e10cSrcweir { 80cdf0e10cSrcweir } 81cdf0e10cSrcweir ~StreamDecompressor()82cdf0e10cSrcweir ~StreamDecompressor() { } 83cdf0e10cSrcweir 84cdf0e10cSrcweir 85cdf0e10cSrcweir virtual sal_Int32 getNextByte(); 86cdf0e10cSrcweir 87cdf0e10cSrcweir private: 88cdf0e10cSrcweir 89cdf0e10cSrcweir RandomAccessStream* in_; 90cdf0e10cSrcweir 91cdf0e10cSrcweir }; 92cdf0e10cSrcweir 93cdf0e10cSrcweir 94cdf0e10cSrcweir 95cdf0e10cSrcweir class ByteArrayDecompressor 96cdf0e10cSrcweir : public Decompressor 97cdf0e10cSrcweir { 98cdf0e10cSrcweir public: 99cdf0e10cSrcweir ByteArrayDecompressor(sal_Int32 arrayL,sal_Int8 * array,sal_Int32 index)100cdf0e10cSrcweir ByteArrayDecompressor( sal_Int32 arrayL,sal_Int8* array,sal_Int32 index ) 101cdf0e10cSrcweir { 102cdf0e10cSrcweir initReading(array,arrayL,index); 103cdf0e10cSrcweir } 104cdf0e10cSrcweir 105cdf0e10cSrcweir ~ByteArrayDecompressor()106cdf0e10cSrcweir ~ByteArrayDecompressor() { } 107cdf0e10cSrcweir bytesRead()108cdf0e10cSrcweir sal_Int32 bytesRead() 109cdf0e10cSrcweir { 110cdf0e10cSrcweir return index_ - index0_; 111cdf0e10cSrcweir } 112cdf0e10cSrcweir 113cdf0e10cSrcweir getNextByte()114cdf0e10cSrcweir sal_Int32 getNextByte() throw( xmlsearch::excep::XmlSearchException ) 115cdf0e10cSrcweir { 116cdf0e10cSrcweir if( arrayL_ <= index_ ) 117cdf0e10cSrcweir throw xmlsearch::excep::XmlSearchException( 118cdf0e10cSrcweir rtl::OUString::createFromAscii( "ByteArrayDecompressor->getNextByte()" ) ); 119cdf0e10cSrcweir return array_[index_++] & 0xFF; 120cdf0e10cSrcweir } 121cdf0e10cSrcweir 122cdf0e10cSrcweir 123cdf0e10cSrcweir private: 124cdf0e10cSrcweir 125cdf0e10cSrcweir sal_Int32 arrayL_; 126cdf0e10cSrcweir sal_Int8 *array_; 127cdf0e10cSrcweir 128cdf0e10cSrcweir sal_Int32 index_,index0_; 129cdf0e10cSrcweir 130cdf0e10cSrcweir using xmlsearch::util::Decompressor::initReading; initReading(sal_Int8 * array,sal_Int32 arrayL,sal_Int32 index)131cdf0e10cSrcweir void initReading( sal_Int8* array,sal_Int32 arrayL,sal_Int32 index ) 132cdf0e10cSrcweir { 133cdf0e10cSrcweir arrayL_ = arrayL; 134cdf0e10cSrcweir array_ = array; 135cdf0e10cSrcweir index_ = index0_ = index; 136cdf0e10cSrcweir Decompressor::initReading(); 137cdf0e10cSrcweir } 138cdf0e10cSrcweir 139cdf0e10cSrcweir }; 140cdf0e10cSrcweir 141cdf0e10cSrcweir 142cdf0e10cSrcweir } 143cdf0e10cSrcweir 144cdf0e10cSrcweir } 145cdf0e10cSrcweir 146cdf0e10cSrcweir 147cdf0e10cSrcweir #endif 148