po: added postscan hook, to make pages depend on the pages linking to them

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

diff --git a/IkiWiki/Plugin/tag.pm b/IkiWiki/Plugin/tag.pm
index 48ed1a8f87eb67ae74302484d49942a468a7a7f4..ecc77cbb11162a5587de36ab30adc9edc9defdb1 100644 (file)
--- a/IkiWiki/Plugin/tag.pm
+++ b/IkiWiki/Plugin/tag.pm
@@ -8,31 +8,58 @@ use IkiWiki 2.00;
 
 my %tags;
 
-sub import { #{{{
+sub import {
        hook(type => "getopt", id => "tag", call => \&getopt);
-       hook(type => "preprocess", id => "tag", call => \&preprocess, scan => 1);
+       hook(type => "getsetup", id => "tag", call => \&getsetup);
+       hook(type => "preprocess", id => "tag", call => \&preprocess_tag, scan => 1);
+       hook(type => "preprocess", id => "taglink", call => \&preprocess_taglink, scan => 1);
        hook(type => "pagetemplate", id => "tag", call => \&pagetemplate);
-} # }}}
+}
 
-sub getopt () { #{{{
+sub getopt () {
        eval q{use Getopt::Long};
        error($@) if $@;
        Getopt::Long::Configure('pass_through');
        GetOptions("tagbase=s" => \$config{tagbase});
-} #}}}
+}
 
-sub tagpage ($) { #{{{
+sub getsetup () {
+       return
+               plugin => {
+                       safe => 1,
+                       rebuild => undef,
+               },
+               tagbase => {
+                       type => "string",
+                       example => "tag",
+                       description => "parent page tags are located under",
+                       safe => 1,
+                       rebuild => 1,
+               },
+}
+
+sub tagpage ($) {
        my $tag=shift;
                        
-       if (exists $config{tagbase} &&
+       if ($tag !~ m{^\.?/} &&
            defined $config{tagbase}) {
-               $tag=$config{tagbase}."/".$tag;
+               $tag="/".$config{tagbase}."/".$tag;
+               $tag=~y#/#/#s; # squash dups
        }
 
        return $tag;
-} #}}}
+}
+
+sub taglink ($$$;@) {
+       my $page=shift;
+       my $destpage=shift;
+       my $tag=shift;
+       my %opts=@_;
 
-sub preprocess (@) { #{{{
+       return htmllink($page, $destpage, tagpage($tag), %opts);
+}
+
+sub preprocess_tag (@) {
        if (! @_) {
                return "";
        }
@@ -43,16 +70,41 @@ sub preprocess (@) { #{{{
        delete $params{preview};
 
        foreach my $tag (keys %params) {
-               $tag=IkiWiki::linkpage($tag);
+               $tag=linkpage($tag);
                $tags{$page}{$tag}=1;
                # hidden WikiLink
                push @{$links{$page}}, tagpage($tag);
        }
                
        return "";
-} # }}}
+}
+
+sub preprocess_taglink (@) {
+       if (! @_) {
+               return "";
+       }
+       my %params=@_;
+       return join(" ", map {
+               if (/(.*)\|(.*)/) {
+                       my $tag=linkpage($2);
+                       $tags{$params{page}}{$tag}=1;
+                       push @{$links{$params{page}}}, tagpage($tag);
+                       return taglink($params{page}, $params{destpage}, $tag,
+                               linktext => pagetitle($1));
+               }
+               else {
+                       my $tag=linkpage($_);
+                       $tags{$params{page}}{$tag}=1;
+                       push @{$links{$params{page}}}, tagpage($tag);
+                       return taglink($params{page}, $params{destpage}, $tag);
+               }
+       }
+       grep {
+               $_ ne 'page' && $_ ne 'destpage' && $_ ne 'preview'
+       } keys %params);
+}
 
-sub pagetemplate (@) { #{{{
+sub pagetemplate (@) {
        my %params=@_;
        my $page=$params{page};
        my $destpage=$params{destpage};
@@ -60,7 +112,7 @@ sub pagetemplate (@) { #{{{
 
        $template->param(tags => [
                map { 
-                       link => htmllink($page, $destpage, tagpage($_))
+                       link => taglink($page, $destpage, $_, rel => "tag")
                }, sort keys %{$tags{$page}}
        ]) if exists $tags{$page} && %{$tags{$page}} && $template->query(name => "tags");
 
@@ -71,6 +123,6 @@ sub pagetemplate (@) { #{{{
                                sort keys %{$tags{$page}}]);
                }
        }
-} # }}}
+}
 
 1