Package ca.cgjennings.algo.compression

Class LZMACompressor

java.lang.Object

ca.cgjennings.algo.compression.AbstractCompressor

ca.cgjennings.algo.compression.LZMACompressor

All Implemented Interfaces:

Compressor

public class LZMACompressor
extends AbstractCompressor

A Compressor that writes a stream of LZMA2 compressed data.

Author:

Chris Jennings

Constructor Summary

Constructors

Constructor	Description
LZMACompressor()	Creates a new LZMA compressor at a default compression level.
LZMACompressor(int compressionLevel)	Creates a new LZMA compressor with the requested compression level.

Method Summary

Modifier and Type	Method	Description
void	compress(java.io.InputStream in, java.io.OutputStream out)	Reads the data from the input stream, compresses it, and writes it to the output stream.
java.io.InputStream	filter(java.io.InputStream in)	Returns an input stream that reads decompresses data from a stream of compressed data.
java.io.OutputStream	filter(java.io.OutputStream out)	Returns an output stream that compresses data as it writes it to an existing stream.

Methods inherited from class ca.cgjennings.algo.compression.AbstractCompressor

compress, compress, decompress, decompress, decompress, getCompressionLevel, pumpStream, setCompressionLevel, wrap, wrap

Methods inherited from class java.lang.Object

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

Constructor Detail

LZMACompressor

public LZMACompressor()

Creates a new LZMA compressor at a default compression level.

LZMACompressor

public LZMACompressor(int compressionLevel)

Creates a new LZMA compressor with the requested compression level.

Parameters:

compressionLevel - the compression level, from 0-9

Method Detail

compress

public void compress(java.io.InputStream in,
                     java.io.OutputStream out)
              throws java.io.IOException

Description copied from interface: Compressor

Reads the data from the input stream, compresses it, and writes it to the output stream.

Parameters:

in - the source for data to compress

out - the sink for compressed data

Throws:

java.io.IOException - if an error occurs during compression

filter

public java.io.OutputStream filter(java.io.OutputStream out)
                            throws java.io.IOException

Description copied from interface: Compressor

Returns an output stream that compresses data as it writes it to an existing stream.

Parameters:

out - the stream to write compressed data to

Returns:

a filter stream that will compress data and write it to out

Throws:

java.io.IOException - if an error occurs while creating the stream

filter

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

Description copied from interface: Compressor

Returns an input stream that reads decompresses data from a stream of compressed data.

Parameters:

in - the stream to read compressed data from

Returns:

a filter stream that will decompress data from in as it is read from

Throws:

java.io.IOException - if an error occurs while creating the stream