Make it easy to select a Markdown executible.

[ikiwiki.git] / IkiWiki / Plugin / mdwn.pm

diff --git a/IkiWiki/Plugin/mdwn.pm b/IkiWiki/Plugin/mdwn.pm
index c1f978ad3b99c2c0cd68c5aa75570725e3db8489..dc5d8f01a93efbb2b9693272c3145fefff391c29 100644 (file)
--- a/IkiWiki/Plugin/mdwn.pm
+++ b/IkiWiki/Plugin/mdwn.pm
@@ -4,33 +4,123 @@ package IkiWiki::Plugin::mdwn;
 
 use warnings;
 use strict;
-use IkiWiki;
+use IkiWiki 3.00;
 
-sub import { #{{{
-       IkiWiki::hook(type => "htmlize", id => "mdwn", call => \&htmlize);
-} # }}}
+sub import {
+       hook(type => "getsetup", id => "mdwn", call => \&getsetup);
+       hook(type => "htmlize", id => "mdwn", call => \&htmlize, longname => "Markdown");
+}
 
-sub htmlize ($) { #{{{
-       my $content = shift;
+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,
+               },
+               markdown_path => {
+                       type => "string",
+                       example => 0,
+                       description => "path to an external markdown binary",
+                       safe => 0,
+                       rebuild => undef,
+               },
+}
 
-       if (! $INC{"/usr/bin/markdown"}) {
-               # Note: a proper perl module is available in Debian
-               # for markdown, but not upstream yet.
+sub checkconfig () {
+       if (! defined $config{markdown_path}) {
+               $config{markdown_path}="/usr/bin/markdown";
+       }
+}
+
+my $markdown_sub;
+my $tempdir;
+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';
-               do "/usr/bin/markdown" || IkiWiki::error("failed to load /usr/bin/markdown: $!");
+       
+               if ($config{markdown_path}) {
+                        eval q{use File::Temp};
+                        if ($@) {
+                                debug(gettext("markdown_path is set, but File::Temp is not installed"));
+                        }
+                       else {
+                               debug("Markdown: $config{markdown_path}");
+                               $tempdir=File::Temp::tempdir( CLEANUP => 1 );
+                               $markdown_sub=sub {
+                                       my $content=shift;
+                                       my $fh;
+                                       my $filename;
+                                       ($fh, $filename) = File::Temp::tempfile( DIR => $tempdir );
+                                       print $fh "$content\n";
+                                       close($fh);
+                                       $content = `$config{markdown_path} $filename`;
+                                       return $content;
+                               }
+                       }
+               } elsif (exists $config{multimarkdown} && $config{multimarkdown}) {
+                       eval q{use Text::MultiMarkdown};
+                       if ($@) {
+                               debug(gettext("multimarkdown is enabled, but Text::MultiMarkdown is not installed"));
+                       }
+                       else {
+                               debug("Markdown: Text::MultiMarkdown::markdown()");
+                               $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')) {
+                                       debug("Markdown: Text::Markdown::markdown()");
+                                       $markdown_sub=\&Text::Markdown::markdown;
+                               }
+                               else {
+                                       debug("Markdown: Text::Markdown::Markdown()");
+                                       $markdown_sub=\&Text::Markdown::Markdown;
+                               }
+                       }
+                       else {
+                               eval q{use Markdown};
+                               if (! $@) {
+                                       debug("Markdown: Markdown::Markdown()");
+                                       $markdown_sub=\&Markdown::Markdown;
+                               }
+                               else {
+                                       error(sprintf(gettext("failed to load Markdown.pm perl module (%s) or $config{markdown_path} (%s)"), $@, $!));
+                               }
+                       }
+               }
+               
                require Encode;
        }
        
        # Workaround for perl bug (#376329)
        $content=Encode::encode_utf8($content);
-       $content=Encode::encode_utf8($content);
-       $content=Markdown::Markdown($content);
-       $content=Encode::decode_utf8($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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