Meredith Howard > Compress-LZW-0.03 > Compress::LZW

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Module Version: 0.03   Source  

NAME ^

Compress::LZW - Pure-Perl implementation of scaling LZW

VERSION ^

version 0.03

SYNOPSIS ^

 use Compress::LZW;
  
 my $compressed = compress($some_data);
 my $data       = decompress($compressed);

DESCRIPTION ^

Compress::LZW is a perl implementation of the Lempel-Ziv-Welch compression algorithm, which should no longer be patented worldwide. It is shooting for loose compatibility with the flavor of LZW found in the classic UNIX compress(1), though there are a few variations out there today. I test against ncompress on Linux x86.

FUNCTIONS ^

compress

Accepts a scalar, returns compressed data in a scalar.

Wraps Compress::LZW::Compressor

decompress

Accepts a (compressed) scalar, returns decompressed data in a scalar.

Wraps Compress::LZW::Deompressor

EXPORTS ^

compress decompress

SEE ALSO ^

The implementations, Compress::LZW::Compressor and Compress::LZW::Decompressor.

Other Compress::* modules, especially Compress::LZV1, Compress::LZF and Compress::Zlib.

I definitely studied some other implementations that deserve credit, in particular: Sean O'Rourke, <SEANO> - Original author, Compress::SelfExtracting, and another by Rocco Caputo which was posted online.

AUTHOR ^

Meredith Howard <mhoward@cpan.org>

COPYRIGHT AND LICENSE ^

This software is copyright (c) 2013 by Meredith Howard.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

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