<html><head><meta name="color-scheme" content="light dark"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">#!/usr/bin/perl
# Ikiwiki tag plugin.
package IkiWiki::Plugin::tag;

use warnings;
use strict;
use IkiWiki;

my %tags;

sub import { #{{{
	IkiWiki::hook(type =&gt; "getopt", id =&gt; "tag",
		call =&gt; \&amp;getopt);
	IkiWiki::hook(type =&gt; "preprocess", id =&gt; "tag",
		call =&gt; \&amp;preprocess);
	IkiWiki::hook(type =&gt; "pagetemplate", id =&gt; "tag",
		call =&gt; \&amp;pagetemplate);
} # }}}

sub getopt () { #{{{
	eval q{use Getopt::Long};
	Getopt::Long::Configure('pass_through');
	GetOptions("tagbase=s" =&gt; \$IkiWiki::config{tagbase});
} #}}}

sub tagpage ($) { #{{{
	my $tag=shift;
			
	if (exists $IkiWiki::config{tagbase} &amp;&amp;
	    defined $IkiWiki::config{tagbase}) {
		$tag=$IkiWiki::config{tagbase}."/".$tag;
	}

	return $tag;
} #}}}

sub preprocess (@) { #{{{
	if (! @_) {
		return "";
	}
	my %params=@_;
	my $page = $params{page};
	delete $params{page};
	delete $params{destpage};

	$tags{$page} = [];
	foreach my $tag (keys %params) {
		push @{$tags{$page}}, $tag;
		# hidden WikiLink
		push @{$IkiWiki::links{$page}}, tagpage($tag);
	}
		
	return "";
} # }}}

sub pagetemplate (@) { #{{{
	my %params=@_;
	my $page=$params{page};
	my $destpage=$params{destpage};
	my $template=$params{template};

	$template-&gt;param(tags =&gt; [
		map { 
			link =&gt; IkiWiki::htmllink($page, $destpage, tagpage($_))
		}, @{$tags{$page}}
	]) if exists $tags{$page} &amp;&amp; @{$tags{$page}} &amp;&amp; $template-&gt;query(name =&gt; "tags");

	if ($template-&gt;query(name =&gt; "items")) {
		# It's an rss template. Modify each item in the feed,
		# adding any categories based on the page for that item.
		foreach my $item (@{$template-&gt;param("items")}) {
			my $p=$item-&gt;{page};
			if (exists $tags{$p} &amp;&amp; @{$tags{$p}}) {
				$item-&gt;{categories}=[];
				foreach my $tag (@{$tags{$p}}) {
					push @{$item-&gt;{categories}}, {
						category =&gt; $tag,
					};
				}
			}
		}
	}
} # }}}

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