ikiwiki/IkiWiki/Plugin/tag.pm

86 lines
1.8 KiB
Perl

#!/usr/bin/perl
# Ikiwiki tag plugin.
package IkiWiki::Plugin::tag;
use warnings;
use strict;
use IkiWiki;
my %tags;
sub import { #{{{
IkiWiki::hook(type => "getopt", id => "tag",
call => \&getopt);
IkiWiki::hook(type => "preprocess", id => "tag",
call => \&preprocess);
IkiWiki::hook(type => "pagetemplate", id => "tag",
call => \&pagetemplate);
} # }}}
sub getopt () { #{{{
eval q{use Getopt::Long};
Getopt::Long::Configure('pass_through');
GetOptions("tagbase=s" => \$IkiWiki::config{tagbase});
} #}}}
sub tagpage ($) { #{{{
my $tag=shift;
if (exists $IkiWiki::config{tagbase} &&
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};
$template->param(tags => [
map {
link => IkiWiki::htmllink($page, $destpage, tagpage($_))
}, @{$tags{$page}}
]) if exists $tags{$page} && @{$tags{$page}} && $template->query(name => "tags");
if ($template->query(name => "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->param("items")}) {
my $p=$item->{page};
if (exists $tags{$p} && @{$tags{$p}}) {
$item->{categories}=[];
foreach my $tag (@{$tags{$p}}) {
push @{$item->{categories}}, {
category => $tag,
};
}
}
}
}
} # }}}
1