Add modified opengraph plugin.

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

diff --git a/IkiWiki/Plugin/mdwn.pm b/IkiWiki/Plugin/mdwn.pm
index 1520b3eecc66d96eb7b0da44a441b01bc3fc5ad1..9158a477beb5bdbd98855253a57dafa21ca53fb3 100644 (file)
--- a/IkiWiki/Plugin/mdwn.pm
+++ b/IkiWiki/Plugin/mdwn.pm
@@ -4,45 +4,186 @@ package IkiWiki::Plugin::mdwn;
 
 use warnings;
 use strict;
 
 use warnings;
 use strict;

-use IkiWiki 2.00;
+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_sub;
-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};
+}
+
+our $markdown_sub;
+sub htmlize (@) {

        my %params=@_;
        my $content = $params{content};
 
        if (! defined $markdown_sub) {
                # Markdown is forked and splintered upstream and can be
        my %params=@_;
        my $content = $params{content};
 
        if (! defined $markdown_sub) {
                # Markdown is forked and splintered upstream and can be

-               # available in a variety of incompatible forms. Support
-               # them all.
+               # 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 (! $@) {
-                       $markdown_sub=\&Markdown::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 );
+
+                                       $flags{disable_footnotes}=not $config{mdwn_footnotes};
+
+                                       Text::MultiMarkdown::markdown(shift, \%flags);
+                               }
+                       }

                }
                }

-               else {
+               if (! defined $markdown_sub &&
+                   (! exists $config{nodiscount} || ! $config{nodiscount})) {
+                       eval q{use Text::Markdown::Discount};
+                       if (! $@) {
+                               my $markdown = \&Text::Markdown::Discount::markdown;
+                               my $always_flags = 0;
+
+                               # Disable Pandoc-style % Title, % Author, % Date
+                               # Use the meta plugin instead
+                               $always_flags |= Text::Markdown::Discount::MKD_NOHEADER();
+
+                               # Disable Unicodification of quote marks, em dashes...
+                               # Use the typography plugin instead
+                               $always_flags |= Text::Markdown::Discount::MKD_NOPANTS();
+
+                               # Workaround for discount's eliding of <style> blocks.
+                               # https://rt.cpan.org/Ticket/Display.html?id=74016
+                               if (Text::Markdown::Discount->can('MKD_NOSTYLE')) {
+                                       $always_flags |= Text::Markdown::Discount::MKD_NOSTYLE();
+                               }
+                               elsif ($markdown->('<style>x</style>', 0) !~ '<style>' &&
+                                       $markdown->('<style>x</style>', 0x00400000) =~ m{<style>x</style>}) {
+                                       $always_flags |= 0x00400000;
+                               }
+
+                               # Enable fenced code blocks in libmarkdown >= 2.2.0
+                               # https://bugs.debian.org/888055
+                               if (Text::Markdown::Discount->can('MKD_FENCEDCODE')) {
+                                       $always_flags |= Text::Markdown::Discount::MKD_FENCEDCODE();
+                               }
+                               elsif ($markdown->("~~~\nx\n~~~", 0) !~ m{<pre\b} &&
+                                       $markdown->("~~~\nx\n~~~", 0x02000000) =~ m{<pre\b}) {
+                                       $always_flags |= 0x02000000;
+                               }
+
+                               # PHP Markdown Extra-style term\n: definition -> <dl>
+                               if (Text::Markdown::Discount->can('MKD_DLEXTRA')) {
+                                       $always_flags |= Text::Markdown::Discount::MKD_DLEXTRA();
+                               }
+                               elsif ($markdown->("term\n: def\n", 0) !~ m{<dl>} &&
+                                       $markdown->("term\n: def\n", 0x01000000) =~ m{<dl>}) {
+                                       $always_flags |= 0x01000000;
+                               }
+
+                               # Allow dashes and underscores in tag names
+                               if (Text::Markdown::Discount->can('MKD_GITHUBTAGS')) {
+                                       $always_flags |= Text::Markdown::Discount::MKD_GITHUBTAGS();
+                               }
+                               elsif ($markdown->('<foo_bar>', 0) !~ m{<foo_bar} &&
+                                       $markdown->('<foo_bar>', 0x08000000) =~ m{<foo_bar\b}) {
+                                       $always_flags |= 0x08000000;
+                               }
+
+                               $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 $flags=$always_flags;
+
+                                       if ($config{mdwn_footnotes}) {
+                                               $flags |= Text::Markdown::Discount::MKD_EXTRA_FOOTNOTE();
+                                       }
+
+                                       unless ($config{mdwn_alpha_lists}) {
+                                               $flags |= Text::Markdown::Discount::MKD_NOALPHALIST();
+                                       }
+
+                                       return Text::Markdown::Discount::markdown($t, $flags);
+                               }
+                       }
+               }
+               if (! defined $markdown_sub) {

                        eval q{use Text::Markdown};
                        if (! $@) {
                        eval q{use Text::Markdown};
                        if (! $@) {

-                               $markdown_sub=\&Text::Markdown::Markdown;
+                               if (Text::Markdown->can('markdown')) {
+                                       $markdown_sub=\&Text::Markdown::markdown;
+                               }
+                               else {
+                                       $markdown_sub=\&Text::Markdown::Markdown;
+                               }

                        }
                        else {
                        }
                        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;
+                               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;
        }
        
                require Encode;
        }
        

-       my $oneline = $content !~ /\n/;
-

        # Workaround for perl bug (#376329)
        $content=Encode::encode_utf8($content);
        eval {$content=&$markdown_sub($content)};
        # Workaround for perl bug (#376329)
        $content=Encode::encode_utf8($content);
        eval {$content=&$markdown_sub($content)};


@@ -52,14 +193,7 @@ sub htmlize (@) { #{{{
        }
        $content=Encode::decode_utf8($content);
 
        }
        $content=Encode::decode_utf8($content);
 

-       if ($oneline) {
-               # hack to get rid of enclosing junk added by markdown
-               $content=~s!^<p>!!;
-               $content=~s!</p>$!!;
-               chomp $content;
-       }
-

        return $content;
        return $content;

-} # }}}
+}

 
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