PAR::Filter - Input filter for PAR

       Audrey Tang <cpan@audreyt.org>

       Copyright 2003-2009 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.

       See LICENSE.

perl v5.40.1                                       2025-02-18                                   PAR::Filter(3pm)

       Starting with PAR 0.76, "pp -f" takes a filter name, like "Bleach", and invokes this module to transform
       the programs with PAR::Filter::Bleach.  Similarly, "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:

       •   PAR::Filter::Bleach

           The archetypical obfuscating filter.

       •   PAR::Filter::Obfuscate

           Use B::Deobfuscate to strip away indents and comments, as well as mangling variable names.

       •   PAR::Filter::PatchContent

           Fix PAR-incompatible modules, applied to modules by default.

       •   PAR::Filter::PodStrip

           Strip away POD sections, applied to modules by default.

       •   PAR::Filter::Bytecode

           Use  B::Bytecode  to  strip away indents and comments.  Thisfilterisdeprecated! For source hiding,
           have a look at PAR::Filter::Crypto instead and make sure to read about its caveats.

       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