1*b1cdbd2cSJim Jagielski /**************************************************************
2*b1cdbd2cSJim Jagielski  *
3*b1cdbd2cSJim Jagielski  * Licensed to the Apache Software Foundation (ASF) under one
4*b1cdbd2cSJim Jagielski  * or more contributor license agreements.  See the NOTICE file
5*b1cdbd2cSJim Jagielski  * distributed with this work for additional information
6*b1cdbd2cSJim Jagielski  * regarding copyright ownership.  The ASF licenses this file
7*b1cdbd2cSJim Jagielski  * to you under the Apache License, Version 2.0 (the
8*b1cdbd2cSJim Jagielski  * "License"); you may not use this file except in compliance
9*b1cdbd2cSJim Jagielski  * with the License.  You may obtain a copy of the License at
10*b1cdbd2cSJim Jagielski  *
11*b1cdbd2cSJim Jagielski  *   http://www.apache.org/licenses/LICENSE-2.0
12*b1cdbd2cSJim Jagielski  *
13*b1cdbd2cSJim Jagielski  * Unless required by applicable law or agreed to in writing,
14*b1cdbd2cSJim Jagielski  * software distributed under the License is distributed on an
15*b1cdbd2cSJim Jagielski  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16*b1cdbd2cSJim Jagielski  * KIND, either express or implied.  See the License for the
17*b1cdbd2cSJim Jagielski  * specific language governing permissions and limitations
18*b1cdbd2cSJim Jagielski  * under the License.
19*b1cdbd2cSJim Jagielski  *
20*b1cdbd2cSJim Jagielski  *************************************************************/
21*b1cdbd2cSJim Jagielski 
22*b1cdbd2cSJim Jagielski 
23*b1cdbd2cSJim Jagielski 
24*b1cdbd2cSJim Jagielski // MARKER(update_precomp.py): autogen include statement, do not remove
25*b1cdbd2cSJim Jagielski #include "precompiled_xmlhelp.hxx"
26*b1cdbd2cSJim Jagielski #include <util/Decompressor.hxx>
27*b1cdbd2cSJim Jagielski #include <util/CompressorIterator.hxx>
28*b1cdbd2cSJim Jagielski 
29*b1cdbd2cSJim Jagielski using namespace xmlsearch;
30*b1cdbd2cSJim Jagielski using namespace xmlsearch::util;
31*b1cdbd2cSJim Jagielski 
32*b1cdbd2cSJim Jagielski const sal_Int32 Decompressor::BitsInByte = 8;
33*b1cdbd2cSJim Jagielski const sal_Int32 Decompressor::NBits = 32;
34*b1cdbd2cSJim Jagielski 
getInteger_(const sal_Int8 * v)35*b1cdbd2cSJim Jagielski inline sal_Int32 getInteger_( const sal_Int8* v )
36*b1cdbd2cSJim Jagielski {
37*b1cdbd2cSJim Jagielski     return (((((( (v[0]&0xFF) ) << 8 )
38*b1cdbd2cSJim Jagielski                 | (v[1]&0xFF) ) << 8 )
39*b1cdbd2cSJim Jagielski                 | (v[2]&0xFF) ) << 8 )
40*b1cdbd2cSJim Jagielski                 | (v[3]&0xFF);
41*b1cdbd2cSJim Jagielski }
42*b1cdbd2cSJim Jagielski 
getNextByte()43*b1cdbd2cSJim Jagielski sal_Int32 StreamDecompressor::getNextByte()
44*b1cdbd2cSJim Jagielski {
45*b1cdbd2cSJim Jagielski   sal_Int8 a[4];
46*b1cdbd2cSJim Jagielski   a[0] = a[1] = a[2] = 0;
47*b1cdbd2cSJim Jagielski   if( in_->readBytes( &a[3],1 ) != -1 )
48*b1cdbd2cSJim Jagielski     return getInteger_( a );
49*b1cdbd2cSJim Jagielski   else
50*b1cdbd2cSJim Jagielski     return -1;
51*b1cdbd2cSJim Jagielski }
52