IkiWiki/Plugin/tag.pm

   1 #!/usr/bin/perl
   2 # Ikiwiki tag plugin.
   3 package IkiWiki::Plugin::tag;
   4
   5 use warnings;
   6 use strict;
   7 use IkiWiki 3.00;
   8
   9 sub import {
  10         hook(type => "getopt", id => "tag", call => \&getopt);
  11         hook(type => "getsetup", id => "tag", call => \&getsetup);
  12         hook(type => "preprocess", id => "tag", call => \&preprocess_tag, scan => 1);
  13         hook(type => "preprocess", id => "taglink", call => \&preprocess_taglink, scan => 1);
  14         hook(type => "pagetemplate", id => "tag", call => \&pagetemplate);
  15 }
  16
  17 sub getopt () {
  18         eval q{use Getopt::Long};
  19         error($@) if $@;
  20         Getopt::Long::Configure('pass_through');
  21         GetOptions("tagbase=s" => \$config{tagbase});
  22 }
  23
  24 sub getsetup () {
  25         return
  26                 plugin => {
  27                         safe => 1,
  28                         rebuild => undef,
  29                 },
  30                 tagbase => {
  31                         type => "string",
  32                         example => "tag",
  33                         description => "parent page tags are located under",
  34                         safe => 1,
  35                         rebuild => 1,
  36                 },
  37                 tag_autocreate => {
  38                         type => "boolean",
  39                         example => 1,
  40                         description => "autocreate new tag pages?",
  41                         safe => 1,
  42                         rebuild => undef,
  43                 },
  44 }
  45
  46 sub taglink ($) {
  47         my $tag=shift;
  48
  49         if ($tag !~ m{^/} &&
  50             defined $config{tagbase}) {
  51                 $tag="/".$config{tagbase}."/".$tag;
  52                 $tag=~y#/#/#s; # squash dups
  53         }
  54
  55         return $tag;
  56 }
  57
  58 # Returns a tag name from a tag link
  59 sub tagname ($) {
  60         my $tag=shift;
  61         if (defined $config{tagbase}) {
  62                 $tag =~ s!^/\Q$config{tagbase}\E/!!;
  63         } else {
  64                 $tag =~ s!^\.?/!!;
  65         }
  66         return pagetitle($tag, 1);
  67 }
  68
  69 sub htmllink_tag ($$$;@) {
  70         my $page=shift;
  71         my $destpage=shift;
  72         my $tag=shift;
  73         my %opts=@_;
  74
  75         return htmllink($page, $destpage, taglink($tag), %opts);
  76 }
  77
  78 sub gentag ($) {
  79         my $tag=shift;
  80
  81         if ($config{tag_autocreate} ||
  82             ($config{tagbase} && ! defined $config{tag_autocreate})) {
  83                 my $tagpage=taglink($tag);
  84                 if ($tagpage=~/^\.\/(.*)/) {
  85                         $tagpage=$1;
  86                 }
  87                 else {
  88                         $tagpage=~s/^\///;
  89                 }
  90
  91                 my $tagfile = newpagefile($tagpage, $config{default_pageext});
  92
  93                 add_autofile($tagfile, "tag", sub {
  94                         my $message=sprintf(gettext("creating tag page %s"), $tagpage);
  95                         debug($message);
  96
  97                         my $template=template("autotag.tmpl");
  98                         $template->param(tagname => tagname($tag));
  99                         $template->param(tag => $tag);
 100                         writefile($tagfile, $config{srcdir}, $template->output);
 101                         if ($config{rcs}) {
 102                                 IkiWiki::disable_commit_hook();
 103                                 IkiWiki::rcs_add($tagfile);
 104                                 IkiWiki::rcs_commit_staged(message => $message);
 105                                 IkiWiki::enable_commit_hook();
 106                         }
 107                 });
 108         }
 109 }
 110
 111 sub preprocess_tag (@) {
 112         if (! @_) {
 113                 return "";
 114         }
 115         my %params=@_;
 116         my $page = $params{page};
 117         delete $params{page};
 118         delete $params{destpage};
 119         delete $params{preview};
 120
 121         foreach my $tag (keys %params) {
 122                 $tag=linkpage($tag);
 123
 124                 # hidden WikiLink
 125                 add_link($page, taglink($tag), 'tag');
 126
 127                 gentag($tag);
 128         }
 129
 130         return "";
 131 }
 132
 133 sub preprocess_taglink (@) {
 134         if (! @_) {
 135                 return "";
 136         }
 137         my %params=@_;
 138         return join(" ", map {
 139                 if (/(.*)\|(.*)/) {
 140                         my $tag=linkpage($2);
 141                         add_link($params{page}, taglink($tag), 'tag');
 142                         gentag($tag);
 143                         return htmllink_tag($params{page}, $params{destpage}, $tag,
 144                                 linktext => pagetitle($1));
 145                 }
 146                 else {
 147                         my $tag=linkpage($_);
 148                         add_link($params{page}, taglink($tag), 'tag');
 149                         gentag($tag);
 150                         return htmllink_tag($params{page}, $params{destpage}, $tag);
 151                 }
 152         }
 153         grep {
 154                 $_ ne 'page' && $_ ne 'destpage' && $_ ne 'preview'
 155         } keys %params);
 156 }
 157
 158 sub pagetemplate (@) {
 159         my %params=@_;
 160         my $page=$params{page};
 161         my $destpage=$params{destpage};
 162         my $template=$params{template};
 163
 164         my $tags = $typedlinks{$page}{tag};
 165
 166         $template->param(tags => [
 167                 map {
 168                         link => htmllink_tag($page, $destpage, $_,
 169                                         rel => "tag", linktext => tagname($_))
 170                 }, sort keys %$tags
 171         ]) if defined $tags && %$tags && $template->query(name => "tags");
 172
 173         if ($template->query(name => "categories")) {
 174                 # It's an rss/atom template. Add any categories.
 175                 if (defined $tags && %$tags) {
 176                         $template->param(categories => [map { category => tagname($_) },
 177                                 sort keys %$tags]);
 178                 }
 179         }
 180 }
 181
 182 package IkiWiki::PageSpec;
 183
 184 sub match_tagged ($$;@) {
 185         my $page=shift;
 186         my $glob=IkiWiki::Plugin::tag::taglink(shift);
 187         return match_link($page, $glob, linktype => 'tag', @_);
 188 }
 189
 190 1