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PAR::Filter - Input filter for PAR
$code = 'use strict; print "Hello, World!\n";';
$ref = PAR::Filter->new('PodStrip', 'Bleach')->apply(\$code);
print $code; # pod-stripped and obfuscated code
print $$ref; # same thing
$ref = PAR::Filter->new('PodStrip', 'Bleach')->apply('file.pl');
print $$ref; # same thing, applied to file.pl
Starting with PAR 0.76, pp -f takes a filter name, like Bleach, and
invokes this module to transform the programs with the PAR::Filter::Bleach manpage.
Similarily, pp -F Bleach applies the Bleach filter to all included
modules.
It is possible to pass in multiple such filters, which are applied in turn.
The output of each such filter is expected be semantically equivalent to the input, although possibly obfuscated.
The default list of filters include:
The archetypical obfuscating filter.
Use the B::Bytecode manpage to strip away indents and comments.
Use the B::Deobfuscate manpage to strip away indents and comments, as well as mangling variable names.
Fix PAR-incompatible modules, applied to modules by default.
Strip away POD sections, applied to modules by default.
Audrey Tang <cpan@audreyt.org>
Copyright 2003, 2004, 2005, 2006 by Audrey Tang <cpan@audreyt.org>.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.