path: root/IkiWiki/Plugin/mdwn.pm

#!/usr/bin/perl
# Markdown markup language
package IkiWiki::Plugin::mdwn;

use warnings;
use strict;
use IkiWiki 3.00;

sub import {
    hook(type => "getsetup", id => "mdwn", call => \&getsetup);
    hook(type => "htmlize", id => "mdwn", call => \&htmlize, longname => "Markdown");
}

sub getsetup () {
    return
        plugin => {
            safe => 1,
            rebuild => 1, # format plugin
            section => "format",
        },
        multimarkdown => {
            type => "boolean",
            example => 0,
            description => "enable multimarkdown features?",
            safe => 1,
            rebuild => 1,
        },
}

my $markdown_sub;
sub htmlize (@) {
    my %params=@_;
    my $content = $params{content};

    if (! defined $markdown_sub) {
        # Markdown is forked and splintered upstream and can be
        # available in a variety of forms. Support them all.
        no warnings 'once';
        $blosxom::version="is a proper perl module too much to ask?";
        use warnings 'all';

        if (exists $config{multimarkdown} && $config{multimarkdown}) {
            eval q{use Text::MultiMarkdown};
            if ($@) {
                debug(gettext("multimarkdown is enabled, but Text::MultiMarkdown is not installed"));
            }
            else {
                $markdown_sub=sub {
                    Text::MultiMarkdown::markdown(shift, {use_metadata => 0});
                }
            }
        }
        if (! defined $markdown_sub) {
            eval q{use Text::Markdown};
            if (! $@) {
                if (Text::Markdown->can('markdown')) {
                    $markdown_sub=\&Text::Markdown::markdown;
                }
                else {
                    $markdown_sub=\&Text::Markdown::Markdown;
                }
            }
            else {
                eval q{use Markdown};
                if (! $@) {
                    $markdown_sub=\&Markdown::Markdown;
                }
                else {
                    do "/usr/bin/markdown" ||
                        error(sprintf(gettext("failed to load Markdown.pm perl module (%s) or /usr/bin/markdown (%s)"), $@, $!));
                    $markdown_sub=\&Markdown::Markdown;
                }
            }
        }
        
        require Encode;
    }
    
    # Workaround for perl bug (#376329)
    $content=Encode::encode_utf8($content);
    eval {$content=&$markdown_sub($content)};
    if ($@) {
        eval {$content=&$markdown_sub($content)};
        print STDERR $@ if $@;
    }
    $content=Encode::decode_utf8($content);

    return $content;
}

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