ucar.unidata.io

Class UncompressInputStream

java.lang.Object

java.io.InputStream

java.io.FilterInputStream

ucar.unidata.io.UncompressInputStream

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

public class UncompressInputStream
extends java.io.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.

This version has been modified from the original 0.3-3 version by the Unidata Program Center (support@unidata.ucar.edu) to make the constructor public and to fix a couple of bugs. Also: - markSupported() returns false - add uncompress() static method

Field Summary

Fields inherited from class java.io.FilterInputStream

in

Constructor Summary

Constructors

Constructor and Description
UncompressInputStream(java.io.InputStream is)

Method Summary

Modifier and Type	Method and Description
int	available()
static void	main(java.lang.String[] args) test
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)
static void	uncompress(java.lang.String fileInName, java.io.FileOutputStream out)

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(java.io.InputStream is)
                      throws java.io.IOException

Parameters:

is - the input stream to decompress

Throws:

java.io.IOException - if the header is malformed

Method Detail

read

public int read()
         throws java.io.IOException

Overrides:

read in class java.io.FilterInputStream

Throws:

java.io.IOException

read

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

Overrides:

read in class java.io.FilterInputStream

Throws:

java.io.IOException

skip

public long skip(long num)
          throws java.io.IOException

Overrides:

skip in class java.io.FilterInputStream

Throws:

java.io.IOException

available

public int available()
              throws java.io.IOException

Overrides:

available in class java.io.FilterInputStream

Throws:

java.io.IOException

markSupported

public boolean markSupported()

This stream does not support mark/reset on the stream.

Overrides:

markSupported in class java.io.FilterInputStream

Returns:

false

uncompress

public static void uncompress(java.lang.String fileInName,
                              java.io.FileOutputStream out)
                       throws java.io.IOException

Throws:

java.io.IOException

main

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

test

Throws:

java.lang.Exception