void Finish()
{
// Console.WriteLine("BZip2:Finish");
try
{
var totalBefore = this.bw.TotalBytesWrittenOut;
this.compressor.CompressAndWrite();
TraceOutput(TraceBits.Write,"out block length (bytes): {0} (0x{0:X})",
this.bw.TotalBytesWrittenOut - totalBefore);
TraceOutput(TraceBits.Crc, " combined CRC (before): {0:X8}",
this.combinedCRC);
this.combinedCRC = (this.combinedCRC << 1) | (this.combinedCRC >> 31);
this.combinedCRC ^= (uint) compressor.Crc32;
TraceOutput(TraceBits.Crc, " block CRC : {0:X8}",
this.compressor.Crc32);
TraceOutput(TraceBits.Crc, " combined CRC (final) : {0:X8}",
this.combinedCRC);
EmitTrailer();
}
finally
{
this.output = null;
this.compressor = null;
this.bw = null;
}
}
public WorkItem(int ix, int blockSize)
{
// compressed data gets written to a MemoryStream
this.ms = new MemoryStream();
this.bw = new BitWriter(ms);
this.Compressor = new BZip2Compressor(bw, blockSize);
this.index = ix;
}
/// <summary>
/// Constructs a new <c>BZip2OutputStream</c> with specified blocksize,
/// and explicitly specifies whether to leave the wrapped stream open.
/// </summary>
///
/// <param name = "output">the destination stream.</param>
/// <param name = "blockSize">
/// The blockSize in units of 100000 bytes.
/// The valid range is 1..9.
/// </param>
/// <param name = "leaveOpen">
/// whether to leave the captive stream open upon closing this stream.
/// </param>
public BZip2OutputStream(Stream output, int blockSize, bool leaveOpen)
{
if (blockSize < BZip2.MinBlockSize ||
blockSize > BZip2.MaxBlockSize)
{
var msg = String.Format("blockSize={0} is out of range; must be between {1} and {2}",
blockSize,
BZip2.MinBlockSize, BZip2.MaxBlockSize);
throw new ArgumentException(msg, "blockSize");
}
this.output = output;
if (!this.output.CanWrite)
throw new ArgumentException("The stream is not writable.", "output");
this.bw = new BitWriter(this.output);
this.blockSize100k = blockSize;
this.compressor = new BZip2Compressor(this.bw, blockSize);
this.leaveOpen = leaveOpen;
this.combinedCRC = 0;
EmitHeader();
}
