com.mot.iden.zip
Class GZIPOutputStream

java.lang.Object
  java.io.OutputStream
      com.mot.iden.zip.FilterOutputStream
          com.mot.iden.zip.DeflaterOutputStream
              com.mot.iden.zip.GZIPOutputStream

public class GZIPOutputStream

extends DeflaterOutputStream

This class implements a stream filter for writing compressed data in the GZIP file format.

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© Copyright 2001-2003 Motorola, Inc. All Rights Reserved.

Field Summary

protected CRC32

crc CRC-32 of uncompressed data.

Fields inherited from class com.mot.iden.zip.DeflaterOutputStream

buf, def, usesDefaultDeflater

Fields inherited from class com.mot.iden.zip.FilterOutputStream

out

Constructor Summary

GZIPOutputStream(java.io.OutputStream out)
Creates a new output stream with a default buffer size.

GZIPOutputStream(java.io.OutputStream out, int size)
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.

Methods inherited from class com.mot.iden.zip.DeflaterOutputStream

deflate, write

Methods inherited from class com.mot.iden.zip.FilterOutputStream

flush, write

Methods inherited from class java.lang.Object

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

Field Detail

crc

protected CRC32 crc

CRC-32 of uncompressed data.

Constructor Detail

GZIPOutputStream

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

Creates a new output stream with the specified buffer size.

Parameters:

out - the output stream

size - the output buffer size

Throws:

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

java.lang.IllegalArgumentException - if size is <= 0

GZIPOutputStream

public GZIPOutputStream(java.io.OutputStream out)
                 throws java.io.IOException

Creates a new output stream with a default buffer size.

Parameters:

out - the output stream

Throws:

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

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.

Overrides:

write in class DeflaterOutputStream

Parameters:

buf - the data to be written

off - the start offset of the data

len - the length of the data

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 the underlying stream. Use this method when applying multiple filters in succession to the same output stream.

Overrides:

finish in class 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 the underlying stream.

Overrides:

close in class DeflaterOutputStream

Throws:

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