tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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OutWindow.java (1541B)

      1 // LZ.OutWindow
      2 
      3 package SevenZip.Compression.LZ;
      4 
      5 import java.io.IOException;
      6 
      7 public class OutWindow
      8 {
      9 byte[] _buffer;
     10 int _pos;
     11 int _windowSize = 0;
     12 int _streamPos;
     13 java.io.OutputStream _stream;
     14 
     15 public void Create(int windowSize)
     16 {
     17 	if (_buffer == null || _windowSize != windowSize)
     18 		_buffer = new byte[windowSize];
     19 	_windowSize = windowSize;
     20 	_pos = 0;
     21 	_streamPos = 0;
     22 }
     23 
     24 public void SetStream(java.io.OutputStream stream) throws IOException
     25 {
     26 	ReleaseStream();
     27 	_stream = stream;
     28 }
     29 
     30 public void ReleaseStream() throws IOException
     31 {
     32 	Flush();
     33 	_stream = null;
     34 }
     35 
     36 public void Init(boolean solid)
     37 {
     38 	if (!solid)
     39 	{
     40 		_streamPos = 0;
     41 		_pos = 0;
     42 	}
     43 }
     44 
     45 public void Flush() throws IOException
     46 {
     47 	int size = _pos - _streamPos;
     48 	if (size == 0)
     49 		return;
     50 	_stream.write(_buffer, _streamPos, size);
     51 	if (_pos >= _windowSize)
     52 		_pos = 0;
     53 	_streamPos = _pos;
     54 }
     55 
     56 public void CopyBlock(int distance, int len) throws IOException
     57 {
     58 	int pos = _pos - distance - 1;
     59 	if (pos < 0)
     60 		pos += _windowSize;
     61 	for (; len != 0; len--)
     62 	{
     63 		if (pos >= _windowSize)
     64 			pos = 0;
     65 		_buffer[_pos++] = _buffer[pos++];
     66 		if (_pos >= _windowSize)
     67 			Flush();
     68 	}
     69 }
     70 
     71 public void PutByte(byte b) throws IOException
     72 {
     73 	_buffer[_pos++] = b;
     74 	if (_pos >= _windowSize)
     75 		Flush();
     76 }
     77 
     78 public byte GetByte(int distance)
     79 {
     80 	int pos = _pos - distance - 1;
     81 	if (pos < 0)
     82 		pos += _windowSize;
     83 	return _buffer[pos];
     84 }
     85 }