2 # Ikiwiki metadata plugin.
3 package IkiWiki::Plugin::meta;
12 hook(type => "getsetup", id => "meta", call => \&getsetup);
13 hook(type => "needsbuild", id => "meta", call => \&needsbuild);
14 hook(type => "preprocess", id => "meta", call => \&preprocess, scan => 1);
15 hook(type => "pagetemplate", id => "meta", call => \&pagetemplate);
29 foreach my $page (keys %pagestate) {
30 if (exists $pagestate{$page}{meta}) {
31 if (exists $pagesources{$page} &&
32 grep { $_ eq $pagesources{$page} } @$needsbuild) {
33 # remove state, it will be re-added
34 # if the preprocessor directive is still
35 # there during the rebuild
36 delete $pagestate{$page}{meta};
44 if (IkiWiki::Plugin::htmlscrubber->can("sanitize")) {
45 return IkiWiki::Plugin::htmlscrubber::sanitize(
46 content => shift, page => shift, destpage => shift);
55 if (exists $IkiWiki::Plugin::htmlscrubber::{safe_url_regexp} &&
56 defined $IkiWiki::Plugin::htmlscrubber::safe_url_regexp) {
57 return $url=~/$IkiWiki::Plugin::htmlscrubber::safe_url_regexp/;
68 return IkiWiki::htmlize($page, $destpage, pagetype($pagesources{$page}),
69 IkiWiki::linkify($page, $destpage,
70 IkiWiki::preprocess($page, $destpage, shift)));
77 my $value=$params{$key};
79 my $page=$params{page};
81 my $destpage=$params{destpage};
82 delete $params{destpage};
83 delete $params{preview};
85 eval q{use HTML::Entities};
86 # Always decode, even if encoding later, since it might not be
88 $value=decode_entities($value);
90 # Metadata collection that needs to happen during the scan pass.
91 if ($key eq 'title') {
92 $pagestate{$page}{meta}{title}=$value;
93 if (exists $params{sortas}) {
94 $pagestate{$page}{meta}{titlesort}=$params{sortas};
97 delete $pagestate{$page}{meta}{titlesort};
101 elsif ($key eq 'description') {
102 $pagestate{$page}{meta}{description}=$value;
105 elsif ($key eq 'guid') {
106 $pagestate{$page}{meta}{guid}=$value;
109 elsif ($key eq 'license') {
110 push @{$metaheaders{$page}}, '<link rel="license" href="#pagelicense" />';
111 $pagestate{$page}{meta}{license}=$value;
114 elsif ($key eq 'copyright') {
115 push @{$metaheaders{$page}}, '<link rel="copyright" href="#pagecopyright" />';
116 $pagestate{$page}{meta}{copyright}=$value;
119 elsif ($key eq 'link' && ! %params) {
121 add_link($page, $value);
124 elsif ($key eq 'enclosure') {
125 my $link=bestlink($page, $value);
126 if (! length $link) {
127 error gettext("enclosure not found")
129 add_depends($page, $link, deptype("presence"));
131 $value=urlto($link, $page, 1);
132 $pagestate{$page}{meta}{enclosure}=$value;
133 $pagestate{$page}{meta}{enclosurefile}=$link;
136 elsif ($key eq 'author') {
137 $pagestate{$page}{meta}{author}=$value;
138 if (exists $params{sortas}) {
139 $pagestate{$page}{meta}{authorsort}=$params{sortas};
142 delete $pagestate{$page}{meta}{authorsort};
146 elsif ($key eq 'authorurl') {
147 $pagestate{$page}{meta}{authorurl}=$value if safeurl($value);
150 elsif ($key eq 'permalink') {
151 $pagestate{$page}{meta}{permalink}=$value if safeurl($value);
154 elsif ($key eq 'date') {
155 eval q{use Date::Parse};
157 my $time = str2time($value);
159 $IkiWiki::pagectime{$page}=$time;
162 error(sprintf(gettext('cannot parse date/time: %s'), $value));
169 elsif ($key eq 'updated') {
170 eval q{use Date::Parse};
172 my $time = str2time($value);
174 $pagestate{$page}{meta}{updated}=$time;
177 error(sprintf(gettext('cannot parse date/time: %s'), $value));
185 if (! defined wantarray) {
186 # avoid collecting duplicate data during scan pass
190 # Metadata handling that happens only during preprocessing pass.
191 if ($key eq 'permalink') {
192 if (safeurl($value)) {
193 push @{$metaheaders{$page}}, scrub('<link rel="bookmark" href="'.encode_entities($value).'" />', $page, $destpage);
196 elsif ($key eq 'stylesheet') {
197 my $rel=exists $params{rel} ? $params{rel} : "alternate stylesheet";
198 my $title=exists $params{title} ? $params{title} : $value;
199 # adding .css to the value prevents using any old web
200 # editable page as a stylesheet
201 my $stylesheet=bestlink($page, $value.".css");
202 if (! length $stylesheet) {
203 error gettext("stylesheet not found")
205 push @{$metaheaders{$page}}, scrub('<link href="'.urlto($stylesheet, $page).
206 '" rel="'.encode_entities($rel).
207 '" title="'.encode_entities($title).
208 "\" type=\"text/css\" />", $page, $destpage);
210 elsif ($key eq 'script') {
211 my $defer=exists $params{defer} ? ' defer="defer"' : '';
212 my $async=exists $params{async} ? ' async="async"' : '';
213 my $js=bestlink($page, $value.".js");
215 error gettext("script not found");
217 push @{$metaheaders{$page}}, scrub('<script src="'.urlto($js, $page).
218 '"' . $defer . $async . ' type="text/javascript"></script>',
221 elsif ($key eq 'openid') {
222 my $delegate=0; # both by default
223 if (exists $params{delegate}) {
224 $delegate = 1 if lc $params{delegate} eq 'openid';
225 $delegate = 2 if lc $params{delegate} eq 'openid2';
227 if (exists $params{server} && safeurl($params{server})) {
228 push @{$metaheaders{$page}}, '<link href="'.encode_entities($params{server}).
229 '" rel="openid.server" />' if $delegate ne 2;
230 push @{$metaheaders{$page}}, '<link href="'.encode_entities($params{server}).
231 '" rel="openid2.provider" />' if $delegate ne 1;
233 if (safeurl($value)) {
234 push @{$metaheaders{$page}}, '<link href="'.encode_entities($value).
235 '" rel="openid.delegate" />' if $delegate ne 2;
236 push @{$metaheaders{$page}}, '<link href="'.encode_entities($value).
237 '" rel="openid2.local_id" />' if $delegate ne 1;
239 if (exists $params{"xrds-location"} && safeurl($params{"xrds-location"})) {
243 my $url=URI->new_abs($params{"xrds-location"}, $config{url});
244 push @{$metaheaders{$page}}, '<meta http-equiv="X-XRDS-Location" '.
245 'content="'.encode_entities($url).'" />';
248 elsif ($key eq 'foaf') {
249 if (safeurl($value)) {
250 push @{$metaheaders{$page}}, '<link rel="meta" '.
251 'type="application/rdf+xml" title="FOAF" '.
252 'href="'.encode_entities($value).'" />';
255 elsif ($key eq 'redir') {
256 return "" if $page ne $destpage;
258 if ($value !~ /^\w+:\/\//) {
259 my ($redir_page, $redir_anchor) = split /\#/, $value;
261 my $link=bestlink($page, $redir_page);
262 if (! length $link) {
263 error gettext("redir page not found")
265 add_depends($page, $link, deptype("presence"));
267 $value=urlto($link, $page);
268 $value.='#'.$redir_anchor if defined $redir_anchor;
271 # redir cycle detection
272 $pagestate{$page}{meta}{redir}=$link;
275 while (exists $pagestate{$at}{meta}{redir}) {
277 error gettext("redir cycle is not allowed")
280 $at=$pagestate{$at}{meta}{redir};
284 $value=encode_entities($value);
286 my $delay=int(exists $params{delay} ? $params{delay} : 0);
287 my $redir="<meta http-equiv=\"refresh\" content=\"$delay; URL=$value\" />";
289 $redir=scrub($redir, $page, $destpage);
291 push @{$metaheaders{$page}}, $redir;
293 elsif ($key eq 'link') {
295 push @{$metaheaders{$page}}, scrub("<link href=\"".encode_entities($value)."\" ".
297 encode_entities($_)."=\"".encode_entities(decode_entities($params{$_}))."\""
299 " />\n", $page, $destpage);
302 elsif ($key eq 'robots') {
303 push @{$metaheaders{$page}}, '<meta name="robots"'.
304 ' content="'.encode_entities($value).'" />';
306 elsif ($key eq 'description' || $key eq 'author') {
307 push @{$metaheaders{$page}}, '<meta name="'.$key.
308 '" content="'.encode_entities($value).'" />';
310 elsif ($key eq 'name') {
311 push @{$metaheaders{$page}}, scrub('<meta name="'.
312 encode_entities($value).
314 join(' ', map { "$_=\"$params{$_}\"" } keys %params).
315 ' />', $page, $destpage);
317 elsif ($key eq 'keywords') {
318 # Make sure the keyword string is safe: only allow alphanumeric
319 # characters, space and comma and strip the rest.
320 $value =~ s/[^[:alnum:], ]+//g;
321 push @{$metaheaders{$page}}, '<meta name="keywords"'.
322 ' content="'.encode_entities($value).'" />';
325 push @{$metaheaders{$page}}, scrub('<meta name="'.
326 encode_entities($key).'" content="'.
327 encode_entities($value).'" />', $page, $destpage);
333 sub pagetemplate (@) {
335 my $page=$params{page};
336 my $destpage=$params{destpage};
337 my $template=$params{template};
339 if (exists $metaheaders{$page} && $template->query(name => "meta")) {
340 # avoid duplicate meta lines
342 $template->param(meta => join("\n", grep { (! $seen{$_}) && ($seen{$_}=1) } @{$metaheaders{$page}}));
344 if (exists $pagestate{$page}{meta}{title} && $template->query(name => "title")) {
345 eval q{use HTML::Entities};
346 $template->param(title => HTML::Entities::encode_numeric($pagestate{$page}{meta}{title}));
347 $template->param(title_overridden => 1);
350 if (exists $pagestate{$page}{meta}{enclosure}) {
351 $template->param(enclosure => HTML::Entities::encode_entities(IkiWiki::urlabs($pagestate{$page}{meta}{enclosure}, $config{url})));
354 foreach my $field (qw{authorurl}) {
355 eval q{use HTML::Entities};
356 $template->param($field => HTML::Entities::encode_entities($pagestate{$page}{meta}{$field}))
357 if exists $pagestate{$page}{meta}{$field} && $template->query(name => $field);
360 foreach my $field (qw{permalink}) {
361 if (exists $pagestate{$page}{meta}{$field} && $template->query(name => $field)) {
362 eval q{use HTML::Entities};
363 $template->param($field => HTML::Entities::encode_entities(IkiWiki::urlabs($pagestate{$page}{meta}{$field}, $config{url})));
367 foreach my $field (qw{description author}) {
368 eval q{use HTML::Entities};
369 $template->param($field => HTML::Entities::encode_numeric($pagestate{$page}{meta}{$field}))
370 if exists $pagestate{$page}{meta}{$field} && $template->query(name => $field);
373 foreach my $field (qw{license copyright}) {
374 if (exists $pagestate{$page}{meta}{$field} && $template->query(name => $field) &&
375 ($page eq $destpage || ! exists $pagestate{$destpage}{meta}{$field} ||
376 $pagestate{$page}{meta}{$field} ne $pagestate{$destpage}{meta}{$field})) {
377 $template->param($field => htmlize($page, $destpage, $pagestate{$page}{meta}{$field}));
386 # e.g. titlesort (also makes sense for author)
387 my $key = $pagestate{$page}{meta}{$meta . "sort"};
388 return $key if defined $key;
391 $key = $pagestate{$page}{meta}{$meta};
392 return $key if defined $key;
394 # fall back to closer-to-core things
395 if ($meta eq 'title') {
396 return pagetitle(IkiWiki::basename($page));
398 elsif ($meta eq 'date') {
399 return $IkiWiki::pagectime{$page};
401 elsif ($meta eq 'updated') {
402 return $IkiWiki::pagemtime{$page};
413 # turn glob into a safe regexp
414 my $re=IkiWiki::glob2re(shift);
417 if (exists $pagestate{$page}{meta}{$field}) {
418 $val=$pagestate{$page}{meta}{$field};
420 elsif ($field eq 'title') {
421 $val = pagetitle($page);
426 return IkiWiki::SuccessReason->new("$re matches $field of $page", $page => $IkiWiki::DEPEND_CONTENT, "" => 1);
429 return IkiWiki::FailReason->new("$re does not match $field of $page", $page => $IkiWiki::DEPEND_CONTENT, "" => 1);
433 return IkiWiki::FailReason->new("$page does not have a $field", $page => $IkiWiki::DEPEND_CONTENT);
437 package IkiWiki::PageSpec;
439 sub match_title ($$;@) {
440 IkiWiki::Plugin::meta::match("title", @_);
443 sub match_author ($$;@) {
444 IkiWiki::Plugin::meta::match("author", @_);
447 sub match_authorurl ($$;@) {
448 IkiWiki::Plugin::meta::match("authorurl", @_);
451 sub match_license ($$;@) {
452 IkiWiki::Plugin::meta::match("license", @_);
455 sub match_copyright ($$;@) {
456 IkiWiki::Plugin::meta::match("copyright", @_);
459 sub match_guid ($$;@) {
460 IkiWiki::Plugin::meta::match("guid", @_);
463 package IkiWiki::SortSpec;
467 error(gettext("sort=meta requires a parameter")) unless defined $meta;
469 if ($meta eq 'updated' || $meta eq 'date') {
470 return IkiWiki::Plugin::meta::get_sort_key($a, $meta)
472 IkiWiki::Plugin::meta::get_sort_key($b, $meta);
475 return IkiWiki::Plugin::meta::get_sort_key($a, $meta)
477 IkiWiki::Plugin::meta::get_sort_key($b, $meta);
480 # A prototype of how sort=title could behave in 4.0 or something