Package ucar.unidata.io

Class UncompressInputStream

java.lang.Object

java.io.InputStream

java.io.FilterInputStream

ucar.unidata.io.UncompressInputStream

All Implemented Interfaces:

Closeable, AutoCloseable

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.

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

Constructor Summary

Constructors

Constructor	Description
UncompressInputStream(InputStream is)

Method Summary

Modifier and Type	Method	Description
int	available()
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(String fileInName, FileOutputStream out)

Methods inherited from class java.io.FilterInputStream

close, mark, read, reset

Methods inherited from class java.io.InputStream

nullInputStream, readAllBytes, readNBytes, readNBytes, transferTo

Methods inherited from class java.lang.Object

equals, 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

Throws:

IOException

read

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

Overrides:

read in class FilterInputStream

Throws:

IOException

skip

public long skip(long num)
          throws IOException

Overrides:

skip in class FilterInputStream

Throws:

IOException

available

public int available()
              throws IOException

Overrides:

available in class FilterInputStream

Throws:

IOException

markSupported

public boolean markSupported()

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

Overrides:

markSupported in class FilterInputStream

Returns:

false

uncompress

public static void uncompress(String fileInName,
                              FileOutputStream out)
                       throws IOException

Throws:

IOException