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All the Perl that's Practical to Extract and Report

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  • It is true that v 0.1 of the filter is hard-coded to munge OPML files, but the goal has always been to load a "sub" filter on the fly based on the /xref/@content-type attribute. Something along the lines of...
    if (my $ctype = $data->{Attributes}->{'{}content-type'}{'Value'}) {

        my $pkg = join("::",__PACKAGE__,(split(/\//,$ctype)));

        eval "require $pkg";
        if ($@) { ... }

        my $filter = $pkg->new();
        # Do stuff here....
    If I manage to find a pair of dastardly POD errors in Net::Blogger before the day is over, I was planning on adding the changes and uploading v 0.2 to the CPAN.
    • That code makes me rather uneasy from a security standpoint, since you're getting the module name by parsing the content-type. What happens when the value of content-type is something you don't expect to see like application/x-malcode-worm or ../../Malcode/BadWorm (thus overriding your initial setting of __PACKAGE__).

      That code may not have a new method, but the BEGIN block and import code may be sufficient to do something you don't expect.

      For safety's sake, you'd be better off to check to see if $pkg i