IkiWiki::Receive: Avoid using asprintf

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

diff --git a/IkiWiki/Plugin/mdwn.pm b/IkiWiki/Plugin/mdwn.pm
index e5228c3299c5f98b3b8ac8b3cda0b2d11d4e6ce5..9f06c03f2ec05678e0426a723a352eab7475313c 100644 (file)
--- a/IkiWiki/Plugin/mdwn.pm
+++ b/IkiWiki/Plugin/mdwn.pm
@@ -4,42 +4,168 @@ package IkiWiki::Plugin::mdwn;
 
 use warnings;
 use strict;
 
 use warnings;
 use strict;

-use IkiWiki;
+use IkiWiki 3.00;

 
 

-sub import { #{{{
-       hook(type => "htmlize", id => "mdwn", call => \&htmlize);
-} # }}}
+sub import {
+       hook(type => "checkconfig", id => "mdwn", call => \&checkconfig);
+       hook(type => "getsetup", id => "mdwn", call => \&getsetup);
+       hook(type => "htmlize", id => "mdwn", call => \&htmlize, longname => "Markdown");
+       hook(type => "htmlize", id => "md", call => \&htmlize, longname => "Markdown (popular file extension)", nocreate => 1);
+}

 
 

-my $markdown_loaded=0;
-sub htmlize (@) { #{{{
+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,
+               },
+               nodiscount => {
+                       type => "boolean",
+                       example => 0,
+                       description => "disable use of markdown discount?",
+                       safe => 1,
+                       rebuild => 1,
+               },
+               mdwn_footnotes => {
+                       type => "boolean",
+                       example => 1,
+                       description => "enable footnotes in Markdown (where supported)?",
+                       safe => 1,
+                       rebuild => 1,
+               },
+               mdwn_alpha_lists => {
+                       type => "boolean",
+                       example => 0,
+                       description => "interpret line like 'A. First item' as ordered list when using Discount?",
+                       advanced => 1,
+                       safe => 1,
+                       rebuild => 1,
+               },
+}
+
+sub checkconfig () {
+       $config{mdwn_footnotes} = 1 unless defined $config{mdwn_footnotes};
+       $config{mdwn_alpha_lists} = 0 unless defined $config{mdwn_alpha_lists};
+}
+
+my $markdown_sub;
+sub htmlize (@) {

        my %params=@_;
        my $content = $params{content};
 
        my %params=@_;
        my $content = $params{content};
 

-       if (! $markdown_loaded) {
-               # Note: This hack to make markdown run as a proper perl
-               # module. A proper perl module is available in Debian
-               # for markdown, but not upstream yet.
+       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';
 
                no warnings 'once';
                $blosxom::version="is a proper perl module too much to ask?";
                use warnings 'all';
 

-               eval q{use Markdown};
-               if ($@) {
-                       do "/usr/bin/markdown" ||
-                               error("failed to load Markdown.pm perl module ($@) or /usr/bin/markdown ($!)");
+               if (exists $config{multimarkdown} && $config{multimarkdown}) {
+                       eval q{use Text::MultiMarkdown};
+                       if ($@) {
+                               debug(gettext("multimarkdown is enabled, but Text::MultiMarkdown is not installed"));
+                       }
+                       else {
+                               $markdown_sub=sub {
+                                       my %flags=( use_metadata => 0 );
+
+                                       if ($config{mdwn_footnotes}) {
+                                               $flags{disable_footnotes}=1;
+                                       }
+
+                                       Text::MultiMarkdown::markdown(shift, \%flags);
+                               }
+                       }

                }
                }

-               $markdown_loaded=1;
+               if (! defined $markdown_sub &&
+                   (! exists $config{nodiscount} || ! $config{nodiscount})) {
+                       eval q{use Text::Markdown::Discount};
+                       if (! $@) {
+                               $markdown_sub=sub {
+                                       my $t=shift;
+
+                                       # Workaround for discount binding bug
+                                       # https://rt.cpan.org/Ticket/Display.html?id=73657
+                                       return "" if $t=~/^\s*$/;
+
+                                       my $flags=0;
+
+                                       # Disable Pandoc-style % Title, % Author, % Date
+                                       # Use the meta plugin instead
+                                       $flags |= Text::Markdown::Discount::MKD_NOHEADER();
+
+                                       # Disable Unicodification of quote marks, em dashes...
+                                       # Use the typography plugin instead
+                                       $flags |= Text::Markdown::Discount::MKD_NOPANTS();
+
+                                       if ($config{mdwn_footnotes}) {
+                                               $flags |= Text::Markdown::Discount::MKD_EXTRA_FOOTNOTE();
+                                       }
+
+                                       unless ($config{mdwn_alpha_lists}) {
+                                               $flags |= Text::Markdown::Discount::MKD_NOALPHALIST();
+                                       }
+
+                                       # Workaround for discount's eliding
+                                       # of <style> blocks.
+                                       # https://rt.cpan.org/Ticket/Display.html?id=74016
+                                       if (Text::Markdown::Discount->can("MKD_NOSTYLE")) {
+                                               $flags |= Text::Markdown::Discount::MKD_NOSTYLE();
+                                       }
+                                       else {
+                                               # This is correct for the libmarkdown.so.2 ABI
+                                               $flags |= 0x00400000;
+                                       }
+
+                                       return Text::Markdown::Discount::markdown($t, $flags);
+                               }
+                       }
+               }
+               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 {
+                                       my $error = $@;
+                                       do "/usr/bin/markdown" ||
+                                               error(sprintf(gettext("failed to load Markdown.pm perl module (%s) or /usr/bin/markdown (%s)"), $error, $!));
+                                       $markdown_sub=\&Markdown::Markdown;
+                               }
+                       }
+               }
+               

                require Encode;
        }
        
        # Workaround for perl bug (#376329)
        $content=Encode::encode_utf8($content);
                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;
        $content=Encode::decode_utf8($content);
 
        return $content;

-} # }}}
+}

 
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