org.hd.d.pg2k.svrCore
Class DefOutputStream

java.lang.Object
  java.io.OutputStream
      java.io.FilterOutputStream
          java.util.zip.DeflaterOutputStream
              org.hd.d.pg2k.svrCore.DefOutputStream

All Implemented Interfaces:

java.io.Closeable, java.io.Flushable

public final class DefOutputStream
extends java.util.zip.DeflaterOutputStream

Like GZIPOutputStream but no GZIP header or checksum. This is meant to give maximum compression and assumes error checking/recovery is done elsewhere.

DefOutputStream

private DefOutputStream(java.io.OutputStream out,
                        int size)

Creates a new output stream with the specified buffer size. Forces use of the best possible compression at the possible expense of CPU time.

This compressed stream is wrapped with neither GZIP nor ZLIB headers/checksums to minimise overheads; we'd better be doing error detection and correction elsewhere!

Parameters:

out - the output stream

size - the output buffer size; changing this from the default of 512 bytes is unlikely to improve performance

DefOutputStream

public DefOutputStream(java.io.OutputStream out)

Creates a new output stream with a default buffer size.

Parameters:

out - the output stream

write

public void write(byte[] buf,
                  int off,
                  int len)
           throws java.io.IOException

Writes array of bytes to the compressed output stream; blocking.

Overrides:

write in class java.util.zip.DeflaterOutputStream

Throws:

java.io.IOException - if an I/O error has occurred

finish

public void finish()
            throws java.io.IOException

Finishes writing compressed data to the output stream without closing it.

Overrides:

finish in class java.util.zip.DeflaterOutputStream

Throws:

java.io.IOException - if an I/O error has occurred

close

public void close()
           throws java.io.IOException

Writes remaining compressed data to the output stream and closes it.

Specified by:

close in interface java.io.Closeable

Overrides:

close in class java.util.zip.DeflaterOutputStream

Throws:

java.io.IOException - if an I/O error has occurred