148 lines
3.6 KiB
C++
148 lines
3.6 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*************************************************************************
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*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* Copyright 2000, 2010 Oracle and/or its affiliates.
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*
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* OpenOffice.org - a multi-platform office productivity suite
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*
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* This file is part of OpenOffice.org.
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*
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* OpenOffice.org is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License version 3
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* only, as published by the Free Software Foundation.
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*
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* OpenOffice.org is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License version 3 for more details
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* (a copy is included in the LICENSE file that accompanied this code).
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*
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* You should have received a copy of the GNU Lesser General Public License
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* version 3 along with OpenOffice.org. If not, see
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* <http://www.openoffice.org/license.html>
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* for a copy of the LGPLv3 License.
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*
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************************************************************************/
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#ifndef _XMLSEARCH_UTIL_DECOMPRESSOR_HXX_
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#define _XMLSEARCH_UTIL_DECOMPRESSOR_HXX_
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#include <vector>
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#include <excep/XmlSearchExceptions.hxx>
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#include <util/RandomAccessStream.hxx>
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namespace xmlsearch {
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namespace util {
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class Decompressor
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{
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public:
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Decompressor()
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: toRead_( 0 ),
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path_( 0 )
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{
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}
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virtual ~Decompressor() { }
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virtual sal_Int32 getNextByte() = 0;
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virtual void initReading()
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{
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toRead_ = 0;
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}
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private:
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static const sal_Int32 BitsInByte;
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static const sal_Int32 NBits;
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sal_Int32 readByte_, toRead_, path_;
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};
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class StreamDecompressor
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: public Decompressor
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{
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public:
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StreamDecompressor( RandomAccessStream* in )
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: in_( in )
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{
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}
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~StreamDecompressor() { }
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virtual sal_Int32 getNextByte();
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private:
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RandomAccessStream* in_;
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};
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class ByteArrayDecompressor
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: public Decompressor
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{
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public:
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ByteArrayDecompressor( sal_Int32 arrayL,sal_Int8* array,sal_Int32 index )
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{
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initReading(array,arrayL,index);
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}
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~ByteArrayDecompressor() { }
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sal_Int32 bytesRead()
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{
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return index_ - index0_;
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}
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sal_Int32 getNextByte() throw( xmlsearch::excep::XmlSearchException )
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{
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if( arrayL_ <= index_ )
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throw xmlsearch::excep::XmlSearchException(
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rtl::OUString(RTL_CONSTASCII_USTRINGPARAM( "ByteArrayDecompressor->getNextByte()" )) );
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return array_[index_++] & 0xFF;
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}
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private:
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sal_Int32 arrayL_;
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sal_Int8 *array_;
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sal_Int32 index_,index0_;
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using xmlsearch::util::Decompressor::initReading;
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void initReading( sal_Int8* array,sal_Int32 arrayL,sal_Int32 index )
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{
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arrayL_ = arrayL;
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array_ = array;
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index_ = index0_ = index;
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Decompressor::initReading();
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}
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};
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}
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}
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#endif
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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