pt.tumba.ngram.compression
Class PPMCompress

java.lang.Object
  pt.tumba.ngram.compression.PPMCompress

public final class PPMCompress
extends java.lang.Object

Command-line function for compressing files or streams.

Usage:
java PPMCompress [Order [FileIn [FileOut]]]
Order : Order of PPM model to use.
FileIn : File to compress. If not specified, uses stdin.
FileOut : Name of file into which to write the compressed output. Directory must exist. If not specified, writes to stdout.

For example, java PPMCompress 5 foo foo.ppm uses order 5 compression to compress file foo to file foo.ppm. proc1 | PPMCompress 8 | proc2 takes input from the standard out of proc1 and sends the compressed stream to proc2.

Author:

Bruno Martins

See Also:

PPMDecompress

Field Summary

private static java.lang.String

USAGE_MESSAGE String detailing usage of class as a main.

Constructor Summary

PPMCompress()

Method Summary

static void

main(java.lang.String[] args) Compress according to the command line specification.

Methods inherited from class java.lang.Object

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

Field Detail

USAGE_MESSAGE

private static java.lang.String USAGE_MESSAGE

String detailing usage of class as a main.

Constructor Detail

PPMCompress

public PPMCompress()

Method Detail

main

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

Compress according to the command line specification. See class documentation for description.

Parameters:

args - The command line input, tokenized.

Throws:

java.io.IOException - If there is an underlying IO exception.