uk.ac.starlink.util
Class UncompressInputStream

java.lang.Object
  |
  +--java.io.InputStream
        |
        +--java.io.FilterInputStream
              |
              +--uk.ac.starlink.util.UncompressInputStream

public class UncompressInputStream
extends FilterInputStream

This class decompresses an input stream containing data compressed with the unix "compress" utility (LZC, a LZW variant). This code is based heavily on the unlzw.c code in gzip-1.2.4 (written by Peter Jannesen) and the original compress code.


Field Summary
 
Fields inherited from class java.io.FilterInputStream
in
 
Constructor Summary
UncompressInputStream(InputStream is)
           
 
Method Summary
 int available()
           
static void main(String[] args)
           
 boolean markSupported()
          This stream does not support mark/reset on the stream.
 int read()
           
 int read(byte[] buf, int off, int len)
           
 long skip(long num)
           
 
Methods inherited from class java.io.FilterInputStream
close, mark, read, reset
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

UncompressInputStream

public UncompressInputStream(InputStream is)
                      throws IOException
Parameters:
is - the input stream to decompress
Throws:
IOException - if the header is malformed
Method Detail

read

public int read()
         throws IOException
Overrides:
read in class FilterInputStream
IOException

read

public int read(byte[] buf,
                int off,
                int len)
         throws IOException
Overrides:
read in class FilterInputStream
IOException

skip

public long skip(long num)
          throws IOException
Overrides:
skip in class FilterInputStream
IOException

available

public int available()
              throws IOException
Overrides:
available in class FilterInputStream
IOException

markSupported

public boolean markSupported()
This stream does not support mark/reset on the stream.

Overrides:
markSupported in class FilterInputStream
Returns:
false

main

public static void main(String[] args)
                 throws Exception
Exception

Copyright © 2004 CLRC: Central Laboratory of the Research Councils. All rights reserved.