PAR::Filter(3)        User Contributed Perl Documentation       PAR::Filter(3)


NAME
       PAR::Filter - Input filter for PAR

SYNOPSIS
           $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

DESCRIPTION
       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:

       o   PAR::Filter::Bleach

           The archetypical obfuscating filter.

       o   PAR::Filter::Obfuscate

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

       o   PAR::Filter::PatchContent

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

       o   PAR::Filter::PodStrip

           Strip away POD sections, applied to modules by default.

       o   PAR::Filter::Bytecode

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

AUTHORS
       Audrey Tang <cpan@audreyt.org>

COPYRIGHT
       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 v5.38.2                      2024-03-15                    PAR::Filter(3)