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com.arranger.jarl.io
Class GZipOutputStreamEx  

java.lang.Object
  java.io.OutputStream
      java.io.FilterOutputStream
          java.util.zip.DeflaterOutputStream
              com.arranger.jarl.io.GZipOutputStreamEx

Direct Known Subclasses:

CompressedOutputStream

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public class GZipOutputStreamEx

extends java.util.zip.DeflaterOutputStream

This class essentially copies sources of original GZIPOutputStream, just adds ability to pass in desired compression level into constructor

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Field Summary
protected  java.util.zip.CRC32	crc           CRC-32 of uncompressed data.
private static int	GZIP_MAGIC

 

Fields inherited from class java.util.zip.DeflaterOutputStream

buf, def

 

Fields inherited from class java.io.FilterOutputStream

out

 

Constructor Summary

GZipOutputStreamEx(java.io.OutputStream out, int compression)           Creates a new output stream with a default buffer size.

GZipOutputStreamEx(java.io.OutputStream out, int size, int compression)           Creates a new output stream with the specified buffer size.

 

Method Summary
void	close()           Writes remaining compressed data to the output stream and closes the underlying stream.
void	finish()           Finishes writing compressed data to the output stream without closing the underlying stream.
void	write(byte[] buf, int off, int len)           Writes array of bytes to the compressed output stream.
private  void	writeHeader()
private  void	writeInt(int i)
private  void	writeShort(int s)
private  void	writeTrailer()

 

Methods inherited from class java.util.zip.DeflaterOutputStream

deflate, flush, write

 

Methods inherited from class java.io.FilterOutputStream

write

 

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

 

Field Detail

crc

protected java.util.zip.CRC32 crc

CRC-32 of uncompressed data.

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GZIP_MAGIC

private static final int GZIP_MAGIC

See Also:

Constant Field Values

Constructor Detail

GZipOutputStreamEx

public GZipOutputStreamEx(java.io.OutputStream out,
                          int size,
                          int compression)
                   throws java.io.IOException

Creates a new output stream with the specified buffer size.

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GZipOutputStreamEx

public GZipOutputStreamEx(java.io.OutputStream out,
                          int compression)
                   throws java.io.IOException

Creates a new output stream with a default buffer size.

Method Detail

write

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

Writes array of bytes to the compressed output stream. This method will block until all the bytes are written.

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finish

public void finish()
            throws java.io.IOException

Finishes writing compressed data to the output stream without closing the underlying stream. Use this method when applying multiple filters in succession to the same output stream.

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close

public void close()
           throws java.io.IOException

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

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writeHeader

private void writeHeader()
                  throws java.io.IOException

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writeTrailer

private void writeTrailer()
                   throws java.io.IOException

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writeInt

private void writeInt(int i)
               throws java.io.IOException

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writeShort

private void writeShort(int s)
                 throws java.io.IOException

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