diff -r 5f819b90d479 -r 99b265e0d1d0 misc/libphysfs/lzma/CS/7zip/Compress/LZ/LzInWindow.cs
--- a/misc/libphysfs/lzma/CS/7zip/Compress/LZ/LzInWindow.cs	Thu Oct 11 23:43:31 2018 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,132 +0,0 @@
-// LzInWindow.cs
-
-using System;
-
-namespace SevenZip.Compression.LZ
-{
-	public class InWindow
-	{
-		public Byte[] _bufferBase = null; // pointer to buffer with data
-		System.IO.Stream _stream;
-		UInt32 _posLimit; // offset (from _buffer) of first byte when new block reading must be done
-		bool _streamEndWasReached; // if (true) then _streamPos shows real end of stream
-
-		UInt32 _pointerToLastSafePosition;
-
-		public UInt32 _bufferOffset;
-
-		public UInt32 _blockSize; // Size of Allocated memory block
-		public UInt32 _pos; // offset (from _buffer) of curent byte
-		UInt32 _keepSizeBefore; // how many BYTEs must be kept in buffer before _pos
-		UInt32 _keepSizeAfter; // how many BYTEs must be kept buffer after _pos
-		public UInt32 _streamPos; // offset (from _buffer) of first not read byte from Stream
-
-		public void MoveBlock()
-		{
-			UInt32 offset = (UInt32)(_bufferOffset) + _pos - _keepSizeBefore;
-			// we need one additional byte, since MovePos moves on 1 byte.
-			if (offset > 0)
-				offset--;
-			
-			UInt32 numBytes = (UInt32)(_bufferOffset) + _streamPos - offset;
-
-			// check negative offset ????
-			for (UInt32 i = 0; i < numBytes; i++)
-				_bufferBase[i] = _bufferBase[offset + i];
-			_bufferOffset -= offset;
-		}
-
-		public virtual void ReadBlock()
-		{
-			if (_streamEndWasReached)
-				return;
-			while (true)
-			{
-				int size = (int)((0 - _bufferOffset) + _blockSize - _streamPos);
-				if (size == 0)
-					return;
-				int numReadBytes = _stream.Read(_bufferBase, (int)(_bufferOffset + _streamPos), size);
-				if (numReadBytes == 0)
-				{
-					_posLimit = _streamPos;
-					UInt32 pointerToPostion = _bufferOffset + _posLimit;
-					if (pointerToPostion > _pointerToLastSafePosition)
-						_posLimit = (UInt32)(_pointerToLastSafePosition - _bufferOffset);
-
-					_streamEndWasReached = true;
-					return;
-				}
-				_streamPos += (UInt32)numReadBytes;
-				if (_streamPos >= _pos + _keepSizeAfter)
-					_posLimit = _streamPos - _keepSizeAfter;
-			}
-		}
-
-		void Free() { _bufferBase = null; }
-
-		public void Create(UInt32 keepSizeBefore, UInt32 keepSizeAfter, UInt32 keepSizeReserv)
-		{
-			_keepSizeBefore = keepSizeBefore;
-			_keepSizeAfter = keepSizeAfter;
-			UInt32 blockSize = keepSizeBefore + keepSizeAfter + keepSizeReserv;
-			if (_bufferBase == null || _blockSize != blockSize)
-			{
-				Free();
-				_blockSize = blockSize;
-				_bufferBase = new Byte[_blockSize];
-			}
-			_pointerToLastSafePosition = _blockSize - keepSizeAfter;
-		}
-
-		public void SetStream(System.IO.Stream stream) { _stream = stream; }
-		public void ReleaseStream() { _stream = null; }
-
-		public void Init()
-		{
-			_bufferOffset = 0;
-			_pos = 0;
-			_streamPos = 0;
-			_streamEndWasReached = false;
-			ReadBlock();
-		}
-
-		public void MovePos()
-		{
-			_pos++;
-			if (_pos > _posLimit)
-			{
-				UInt32 pointerToPostion = _bufferOffset + _pos;
-				if (pointerToPostion > _pointerToLastSafePosition)
-					MoveBlock();
-				ReadBlock();
-			}
-		}
-
-		public Byte GetIndexByte(Int32 index) { return _bufferBase[_bufferOffset + _pos + index]; }
-
-		// index + limit have not to exceed _keepSizeAfter;
-		public UInt32 GetMatchLen(Int32 index, UInt32 distance, UInt32 limit)
-		{
-			if (_streamEndWasReached)
-				if ((_pos + index) + limit > _streamPos)
-					limit = _streamPos - (UInt32)(_pos + index);
-			distance++;
-			// Byte *pby = _buffer + (size_t)_pos + index;
-			UInt32 pby = _bufferOffset + _pos + (UInt32)index;
-
-			UInt32 i;
-			for (i = 0; i < limit && _bufferBase[pby + i] == _bufferBase[pby + i - distance]; i++);
-			return i;
-		}
-
-		public UInt32 GetNumAvailableBytes() { return _streamPos - _pos; }
-
-		public void ReduceOffsets(Int32 subValue)
-		{
-			_bufferOffset += (UInt32)subValue;
-			_posLimit -= (UInt32)subValue;
-			_pos -= (UInt32)subValue;
-			_streamPos -= (UInt32)subValue;
-		}
-	}
-}