11 		UInt32 _posLimit; // offset (from _buffer) of first byte when new block reading must be done
14 		UInt32 _pointerToLastSafePosition;
16 		public UInt32 _bufferOffset;
18 		public UInt32 _blockSize; // Size of Allocated memory block
19 		public UInt32 _pos; // offset (from _buffer) of curent byte
20 		UInt32 _keepSizeBefore; // how many BYTEs must be kept in buffer before _pos
21 		UInt32 _keepSizeAfter; // how many BYTEs must be kept buffer after _pos
22 		public UInt32 _streamPos; // offset (from _buffer) of first not read byte from Stream
26 			UInt32 offset = (UInt32)(_bufferOffset) + _pos - _keepSizeBefore;  in MoveBlock()
31 			UInt32 numBytes = (UInt32)(_bufferOffset) + _streamPos - offset;  in MoveBlock()
34 			for (UInt32 i = 0; i < numBytes; i++)  in MoveBlock()
52 					UInt32 pointerToPostion = _bufferOffset + _posLimit;  in ReadBlock()
54 						_posLimit = (UInt32)(_pointerToLastSafePosition - _bufferOffset);  in ReadBlock()
59 				_streamPos += (UInt32)numReadBytes;  in ReadBlock()
67 		public void Create(UInt32 keepSizeBefore, UInt32 keepSizeAfter, UInt32 keepSizeReserv)  in Create()
71 			UInt32 blockSize = keepSizeBefore + keepSizeAfter + keepSizeReserv;  in Create()
98 				UInt32 pointerToPostion = _bufferOffset + _pos;  in MovePos()
108 		public UInt32 GetMatchLen(Int32 index, UInt32 distance, UInt32 limit)  in GetMatchLen()
112 					limit = _streamPos - (UInt32)(_pos + index);  in GetMatchLen()
115 			UInt32 pby = _bufferOffset + _pos + (UInt32)index;  in GetMatchLen()
117 			UInt32 i;  in GetMatchLen()
122 		public UInt32 GetNumAvailableBytes() { return _streamPos - _pos; }  in GetNumAvailableBytes()
126 			_bufferOffset += (UInt32)subValue;  in ReduceOffsets()
127 			_posLimit -= (UInt32)subValue;  in ReduceOffsets()
128 			_pos -= (UInt32)subValue;  in ReduceOffsets()
129 			_streamPos -= (UInt32)subValue;  in ReduceOffsets()