IkiWiki/Plugin/mdwn.pm

   1 #!/usr/bin/perl
   2 # Markdown markup language
   3 package IkiWiki::Plugin::mdwn;
   4
   5 use warnings;
   6 use strict;
   7 use IkiWiki 3.00;
   8
   9 sub import {
  10         hook(type => "getsetup", id => "mdwn", call => \&getsetup);
  11         hook(type => "htmlize", id => "mdwn", call => \&htmlize, longname => "Markdown");
  12 }
  13
  14 sub getsetup () {
  15         return
  16                 plugin => {
  17                         safe => 1,
  18                         rebuild => 1, # format plugin
  19                 },
  20                 multimarkdown => {
  21                         type => "boolean",
  22                         example => 0,
  23                         description => "enable multimarkdown features?",
  24                         safe => 1,
  25                         rebuild => 1,
  26                 },
  27 }
  28
  29 my $markdown_sub;
  30 sub htmlize (@) {
  31         my %params=@_;
  32         my $content = $params{content};
  33
  34         if (! defined $markdown_sub) {
  35                 # Markdown is forked and splintered upstream and can be
  36                 # available in a variety of forms. Support them all.
  37                 no warnings 'once';
  38                 $blosxom::version="is a proper perl module too much to ask?";
  39                 use warnings 'all';
  40
  41                 if (exists $config{multimarkdown} && $config{multimarkdown}) {
  42                         eval q{use Text::MultiMarkdown};
  43                         if ($@) {
  44                                 debug(gettext("multimarkdown is enabled, but Text::MultiMarkdown is not installed"));
  45                         }
  46                         $markdown_sub=sub {
  47                                 Text::MultiMarkdown::markdown(shift, {use_metadata => 0});
  48                         }
  49                 }
  50                 if (! defined $markdown_sub) {
  51                         eval q{use Text::Markdown};
  52                         if (! $@) {
  53                                 if (Text::Markdown->can('markdown')) {
  54                                         $markdown_sub=\&Text::Markdown::markdown;
  55                                 }
  56                                 else {
  57                                         $markdown_sub=\&Text::Markdown::Markdown;
  58                                 }
  59                         }
  60                         else {
  61                                 eval q{use Markdown};
  62                                 if (! $@) {
  63                                         $markdown_sub=\&Markdown::Markdown;
  64                                 }
  65                                 else {
  66                                         do "/usr/bin/markdown" ||
  67                                                 error(sprintf(gettext("failed to load Markdown.pm perl module (%s) or /usr/bin/markdown (%s)"), $@, $!));
  68                                         $markdown_sub=\&Markdown::Markdown;
  69                                 }
  70                         }
  71                 }
  72
  73                 require Encode;
  74         }
  75
  76         # Workaround for perl bug (#376329)
  77         $content=Encode::encode_utf8($content);
  78         eval {$content=&$markdown_sub($content)};
  79         if ($@) {
  80                 eval {$content=&$markdown_sub($content)};
  81                 print STDERR $@ if $@;
  82         }
  83         $content=Encode::decode_utf8($content);
  84
  85         return $content;
  86 }
  87
  88 1