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:

java.io.Closeable

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:

Apache Commons Compress 1.3

Constructor Summary

Pack200CompressorInputStream(java.io.File f)
Decompresses the given file, caching the decompressed data in memory.

Pack200CompressorInputStream(java.io.File f, java.util.Map<java.lang.String,java.lang.String> props)
Decompresses the given file, caching the decompressed data in memory and using the given properties.

Pack200CompressorInputStream(java.io.File f, Pack200Strategy mode)
Decompresses the given file using the given strategy to cache the results.

Pack200CompressorInputStream(java.io.File f, Pack200Strategy mode, java.util.Map<java.lang.String,java.lang.String> props)
Decompresses the given file using the given strategy to cache the results and the given properties.

Pack200CompressorInputStream(java.io.InputStream in)
Decompresses the given stream, caching the decompressed data in memory.

Pack200CompressorInputStream(java.io.InputStream in, java.util.Map<java.lang.String,java.lang.String> props)
Decompresses the given stream, caching the decompressed data in memory and using the given properties.

Pack200CompressorInputStream(java.io.InputStream in, Pack200Strategy mode)
Decompresses the given stream using the given strategy to cache the results.

Pack200CompressorInputStream(java.io.InputStream in, Pack200Strategy mode, java.util.Map<java.lang.String,java.lang.String> props)
Decompresses the given stream using the given strategy to cache the results and the given properties.

Method Summary

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

Methods inherited from class java.lang.Object

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

Constructor Detail

Pack200CompressorInputStream

public Pack200CompressorInputStream(java.io.InputStream in)
                             throws java.io.IOException

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

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

Throws:

java.io.IOException

Pack200CompressorInputStream

public Pack200CompressorInputStream(java.io.InputStream in,
                                    Pack200Strategy mode)
                             throws java.io.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.

Throws:

java.io.IOException

Pack200CompressorInputStream

public Pack200CompressorInputStream(java.io.InputStream in,
                                    java.util.Map<java.lang.String,java.lang.String> props)
                             throws java.io.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.

Throws:

java.io.IOException

Pack200CompressorInputStream

public Pack200CompressorInputStream(java.io.InputStream in,
                                    Pack200Strategy mode,
                                    java.util.Map<java.lang.String,java.lang.String> props)
                             throws java.io.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.

Throws:

java.io.IOException

Pack200CompressorInputStream

public Pack200CompressorInputStream(java.io.File f)
                             throws java.io.IOException

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

Throws:

java.io.IOException

Pack200CompressorInputStream

public Pack200CompressorInputStream(java.io.File f,
                                    Pack200Strategy mode)
                             throws java.io.IOException

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

Throws:

java.io.IOException

Pack200CompressorInputStream

public Pack200CompressorInputStream(java.io.File f,
                                    java.util.Map<java.lang.String,java.lang.String> props)
                             throws java.io.IOException

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

Throws:

java.io.IOException

Pack200CompressorInputStream

public Pack200CompressorInputStream(java.io.File f,
                                    Pack200Strategy mode,
                                    java.util.Map<java.lang.String,java.lang.String> props)
                             throws java.io.IOException

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

Throws:

java.io.IOException

Method Detail

read

public int read()
         throws java.io.IOException

Specified by:

read in class java.io.InputStream

Throws:

java.io.IOException

read

public int read(byte[] b)
         throws java.io.IOException

Overrides:

read in class java.io.InputStream

Throws:

java.io.IOException

read

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

Overrides:

read in class java.io.InputStream

Throws:

java.io.IOException

available

public int available()
              throws java.io.IOException

Overrides:

available in class java.io.InputStream

Throws:

java.io.IOException

markSupported

public boolean markSupported()

Overrides:

markSupported in class java.io.InputStream

mark

public void mark(int limit)

Overrides:

mark in class java.io.InputStream

reset

public void reset()
           throws java.io.IOException

Overrides:

reset in class java.io.InputStream

Throws:

java.io.IOException

skip

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

Overrides:

skip in class java.io.InputStream

Throws:

java.io.IOException

close

public void close()
           throws java.io.IOException

Specified by:

close in interface java.io.Closeable

Overrides:

close in class java.io.InputStream

Throws:

java.io.IOException

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