Package org.apache.commons.compress.compressors.pack200

Class Pack200CompressorInputStream

java.lang.Object

java.io.InputStream

org.apache.commons.compress.compressors.CompressorInputStream

org.apache.commons.compress.compressors.pack200.Pack200CompressorInputStream

All Implemented Interfaces:

Closeable, AutoCloseable

public class Pack200CompressorInputStream
extends CompressorInputStream

An input stream that decompresses from the Pack200 format to be read as any other stream.

The getCount and getBytesRead methods always return 0.

Since:

1.3

This class is not thread-safe

Constructor Summary

Constructors

Constructor	Description
Pack200CompressorInputStream(File f)	Decompresses the given file, caching the decompressed data in memory.
Pack200CompressorInputStream(File f, Map<String,String> props)	Decompresses the given file, caching the decompressed data in memory and using the given properties.
Pack200CompressorInputStream(File f, Pack200Strategy mode)	Decompresses the given file using the given strategy to cache the results.
Pack200CompressorInputStream(File f, Pack200Strategy mode, Map<String,String> props)	Decompresses the given file using the given strategy to cache the results and the given properties.
Pack200CompressorInputStream(InputStream in)	Decompresses the given stream, caching the decompressed data in memory.
Pack200CompressorInputStream(InputStream in, Map<String,String> props)	Decompresses the given stream, caching the decompressed data in memory and using the given properties.
Pack200CompressorInputStream(InputStream in, Pack200Strategy mode)	Decompresses the given stream using the given strategy to cache the results.
Pack200CompressorInputStream(InputStream in, Pack200Strategy mode, Map<String,String> props)	Decompresses the given stream using the given strategy to cache the results and the given properties.

Method Summary

Modifier and Type	Method	Description
int	available()
void	close()
void	mark(int limit)
boolean	markSupported()
static boolean	matches(byte[] signature, int length)	Checks if the signature matches what is expected for a pack200 file (0xCAFED00D).
int	read()
int	read(byte[] b)
int	read(byte[] b, int off, int count)
void	reset()
long	skip(long count)

Methods inherited from class org.apache.commons.compress.compressors.CompressorInputStream

count, count, getBytesRead, getCount, getUncompressedCount, pushedBackBytes

Methods inherited from class java.lang.Object

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

Constructor Details

Pack200CompressorInputStream

public Pack200CompressorInputStream(File f)
                             throws IOException

Decompresses the given file, caching the decompressed data in memory.

Parameters:

f - the file to decompress

Throws:

IOException - if reading fails

Pack200CompressorInputStream

public Pack200CompressorInputStream(File f,
 Map<String,String> props)
                             throws IOException

Decompresses the given file, caching the decompressed data in memory and using the given properties.

Parameters:

f - the file to decompress

props - Pack200 properties to use

Throws:

IOException - if reading fails

Pack200CompressorInputStream

public Pack200CompressorInputStream(File f,
 Pack200Strategy mode)
                             throws IOException

Decompresses the given file using the given strategy to cache the results.

Parameters:

f - the file to decompress

mode - the strategy to use

Throws:

IOException - if reading fails

Pack200CompressorInputStream

public Pack200CompressorInputStream(File f,
 Pack200Strategy mode,
 Map<String,String> props)
                             throws IOException

Decompresses the given file using the given strategy to cache the results and the given properties.

Parameters:

f - the file to decompress

mode - the strategy to use

props - Pack200 properties to use

Throws:

IOException - if reading fails

Pack200CompressorInputStream

public Pack200CompressorInputStream(InputStream in)
                             throws IOException

Decompresses the given stream, caching the decompressed data in memory.

When reading from a file the File-arg constructor may provide better performance.

Parameters:

in - the InputStream from which this object should be created

Throws:

IOException - if reading fails

Pack200CompressorInputStream

public Pack200CompressorInputStream(InputStream in,
 Map<String,String> props)
                             throws IOException

Decompresses the given stream, caching the decompressed data in memory and using the given properties.

When reading from a file the File-arg constructor may provide better performance.

Parameters:

in - the InputStream from which this object should be created

props - Pack200 properties to use

Throws:

IOException - if reading fails

Pack200CompressorInputStream

public Pack200CompressorInputStream(InputStream in,
 Pack200Strategy mode)
                             throws IOException

Decompresses the given stream using the given strategy to cache the results.

When reading from a file the File-arg constructor may provide better performance.

Parameters:

in - the InputStream from which this object should be created

mode - the strategy to use

Throws:

IOException - if reading fails

Pack200CompressorInputStream

public Pack200CompressorInputStream(InputStream in,
 Pack200Strategy mode,
 Map<String,String> props)
                             throws IOException

Decompresses the given stream using the given strategy to cache the results and the given properties.

When reading from a file the File-arg constructor may provide better performance.

Parameters:

in - the InputStream from which this object should be created

mode - the strategy to use

props - Pack200 properties to use

Throws:

IOException - if reading fails

Method Details

matches

public static boolean matches(byte[] signature,
 int length)

Checks if the signature matches what is expected for a pack200 file (0xCAFED00D).

Parameters:

signature - the bytes to check

length - the number of bytes to check

Returns:

true, if this stream is a pack200 compressed stream, false otherwise

available

public int available()
              throws IOException

Overrides:

available in class InputStream

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Overrides:

close in class InputStream

Throws:

IOException

mark

public void mark(int limit)

Overrides:

mark in class InputStream

markSupported

public boolean markSupported()

Overrides:

markSupported in class InputStream

read

public int read()
         throws IOException

Specified by:

read in class InputStream

Throws:

IOException

read

public int read(byte[] b)
         throws IOException

Overrides:

read in class InputStream

Throws:

IOException

read

public int read(byte[] b,
 int off,
 int count)
         throws IOException

Overrides:

read in class InputStream

Throws:

IOException

reset

public void reset()
           throws IOException

Overrides:

reset in class InputStream

Throws:

IOException

skip

public long skip(long count)
          throws IOException

Overrides:

skip in class InputStream

Throws:

IOException