/*
* Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
* 2018, 2019
* Jonathan Schleifer <js@heap.zone>
*
* All rights reserved.
*
* This file is part of ObjFW. It may be distributed under the terms of the
* Q Public License 1.0, which can be found in the file LICENSE.QPL included in
* the packaging of this file.
*
* Alternatively, it may be distributed under the terms of the GNU General
* Public License, either version 2 or 3, which can be found in the file
* LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
* file.
*/
#import "OFStream.h"
OF_ASSUME_NONNULL_BEGIN
#define OF_LHA_DECOMPRESSING_STREAM_BUFFER_SIZE 4096
@interface OFLHADecompressingStream: OFStream
{
@public
OFStream *_stream;
uint8_t _distanceBits, _dictionaryBits;
unsigned char _buffer[OF_LHA_DECOMPRESSING_STREAM_BUFFER_SIZE];
uint32_t _bytesConsumed;
uint16_t _bufferIndex, _bufferLength;
uint8_t _byte;
uint8_t _bitIndex, _savedBitsLength;
uint16_t _savedBits;
unsigned char *_slidingWindow;
uint32_t _slidingWindowIndex, _slidingWindowMask;
int _state;
uint16_t _symbolsLeft;
struct of_huffman_tree *_Nullable _codeLenTree, *_Nullable _litLenTree;
struct of_huffman_tree *_Nullable _distTree, *_Nullable _treeIter;
uint16_t _codesCount, _codesReceived;
bool _currentIsExtendedLength, _skip;
uint8_t *_Nullable _codesLengths;
uint16_t _length;
uint32_t _distance;
}
- (instancetype)of_initWithStream: (OFStream *)stream
distanceBits: (uint8_t)distanceBits
dictionaryBits: (uint8_t)dictionaryBits;
@end
OF_ASSUME_NONNULL_END