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}=$value;
135 elsif ($key eq 'author') {
136 $pagestate{$page}{meta}{author}=$value;
137 if (exists $params{sortas}) {
138 $pagestate{$page}{meta}{authorsort}=$params{sortas};
141 delete $pagestate{$page}{meta}{authorsort};
145 elsif ($key eq 'authorurl') {
146 $pagestate{$page}{meta}{authorurl}=$value if safeurl($value);
149 elsif ($key eq 'permalink') {
150 $pagestate{$page}{meta}{permalink}=$value if safeurl($value);
153 elsif ($key eq 'date') {
154 eval q{use Date::Parse};
156 my $time = str2time($value);
157 $IkiWiki::pagectime{$page}=$time if defined $time;
160 elsif ($key eq 'updated') {
161 eval q{use Date::Parse};
163 my $time = str2time($value);
164 $pagestate{$page}{meta}{updated}=$time if defined $time;
168 if (! defined wantarray) {
169 # avoid collecting duplicate data during scan pass
173 # Metadata handling that happens only during preprocessing pass.
174 if ($key eq 'permalink') {
175 if (safeurl($value)) {
176 push @{$metaheaders{$page}}, scrub('<link rel="bookmark" href="'.encode_entities($value).'" />', $page, $destpage);
179 elsif ($key eq 'stylesheet') {
180 my $rel=exists $params{rel} ? $params{rel} : "alternate stylesheet";
181 my $title=exists $params{title} ? $params{title} : $value;
182 # adding .css to the value prevents using any old web
183 # editable page as a stylesheet
184 my $stylesheet=bestlink($page, $value.".css");
185 if (! length $stylesheet) {
186 error gettext("stylesheet not found")
188 push @{$metaheaders{$page}}, scrub('<link href="'.urlto($stylesheet, $page).
189 '" rel="'.encode_entities($rel).
190 '" title="'.encode_entities($title).
191 "\" type=\"text/css\" />", $page, $destpage);
193 elsif ($key eq 'script') {
194 my $defer=exists $params{defer} ? ' defer="defer"' : '';
195 my $async=exists $params{async} ? ' async="async"' : '';
196 my $js=bestlink($page, $value.".js");
198 error gettext("script not found");
200 push @{$metaheaders{$page}}, scrub('<script src="'.urlto($js, $page).
201 '"' . $defer . $async . ' type="text/javascript"></script>',
204 elsif ($key eq 'openid') {
205 my $delegate=0; # both by default
206 if (exists $params{delegate}) {
207 $delegate = 1 if lc $params{delegate} eq 'openid';
208 $delegate = 2 if lc $params{delegate} eq 'openid2';
210 if (exists $params{server} && safeurl($params{server})) {
211 push @{$metaheaders{$page}}, '<link href="'.encode_entities($params{server}).
212 '" rel="openid.server" />' if $delegate ne 2;
213 push @{$metaheaders{$page}}, '<link href="'.encode_entities($params{server}).
214 '" rel="openid2.provider" />' if $delegate ne 1;
216 if (safeurl($value)) {
217 push @{$metaheaders{$page}}, '<link href="'.encode_entities($value).
218 '" rel="openid.delegate" />' if $delegate ne 2;
219 push @{$metaheaders{$page}}, '<link href="'.encode_entities($value).
220 '" rel="openid2.local_id" />' if $delegate ne 1;
222 if (exists $params{"xrds-location"} && safeurl($params{"xrds-location"})) {
226 my $url=URI->new_abs($params{"xrds-location"}, $config{url});
227 push @{$metaheaders{$page}}, '<meta http-equiv="X-XRDS-Location" '.
228 'content="'.encode_entities($url).'" />';
231 elsif ($key eq 'foaf') {
232 if (safeurl($value)) {
233 push @{$metaheaders{$page}}, '<link rel="meta" '.
234 'type="application/rdf+xml" title="FOAF" '.
235 'href="'.encode_entities($value).'" />';
238 elsif ($key eq 'redir') {
239 return "" if $page ne $destpage;
241 if ($value !~ /^\w+:\/\//) {
242 my ($redir_page, $redir_anchor) = split /\#/, $value;
244 my $link=bestlink($page, $redir_page);
245 if (! length $link) {
246 error gettext("redir page not found")
248 add_depends($page, $link, deptype("presence"));
250 $value=urlto($link, $page);
251 $value.='#'.$redir_anchor if defined $redir_anchor;
254 # redir cycle detection
255 $pagestate{$page}{meta}{redir}=$link;
258 while (exists $pagestate{$at}{meta}{redir}) {
260 error gettext("redir cycle is not allowed")
263 $at=$pagestate{$at}{meta}{redir};
267 $value=encode_entities($value);
269 my $delay=int(exists $params{delay} ? $params{delay} : 0);
270 my $redir="<meta http-equiv=\"refresh\" content=\"$delay; URL=$value\" />";
272 $redir=scrub($redir, $page, $destpage);
274 push @{$metaheaders{$page}}, $redir;
276 elsif ($key eq 'link') {
278 push @{$metaheaders{$page}}, scrub("<link href=\"".encode_entities($value)."\" ".
280 encode_entities($_)."=\"".encode_entities(decode_entities($params{$_}))."\""
282 " />\n", $page, $destpage);
285 elsif ($key eq 'robots') {
286 push @{$metaheaders{$page}}, '<meta name="robots"'.
287 ' content="'.encode_entities($value).'" />';
289 elsif ($key eq 'description' || $key eq 'author') {
290 push @{$metaheaders{$page}}, '<meta name="'.$key.
291 '" content="'.encode_entities($value).'" />';
293 elsif ($key eq 'name') {
294 push @{$metaheaders{$page}}, scrub('<meta name="'.
295 encode_entities($value).
296 join(' ', map { "$_=\"$params{$_}\"" } keys %params).
297 ' />', $page, $destpage);
299 elsif ($key eq 'keywords') {
300 # Make sure the keyword string is safe: only allow alphanumeric
301 # characters, space and comma and strip the rest.
302 $value =~ s/[^[:alnum:], ]+//g;
303 push @{$metaheaders{$page}}, '<meta name="keywords"'.
304 ' content="'.encode_entities($value).'" />';
307 push @{$metaheaders{$page}}, scrub('<meta name="'.
308 encode_entities($key).'" content="'.
309 encode_entities($value).'" />', $page, $destpage);
315 sub pagetemplate (@) {
317 my $page=$params{page};
318 my $destpage=$params{destpage};
319 my $template=$params{template};
321 if (exists $metaheaders{$page} && $template->query(name => "meta")) {
322 # avoid duplicate meta lines
324 $template->param(meta => join("\n", grep { (! $seen{$_}) && ($seen{$_}=1) } @{$metaheaders{$page}}));
326 if (exists $pagestate{$page}{meta}{title} && $template->query(name => "title")) {
327 eval q{use HTML::Entities};
328 $template->param(title => HTML::Entities::encode_numeric($pagestate{$page}{meta}{title}));
329 $template->param(title_overridden => 1);
332 if (exists $pagestate{$page}{meta}{enclosure}) {
333 $template->param(enclosure => HTML::Entities::encode_entities(IkiWiki::urlabs($pagestate{$page}{meta}{enclosure}, $config{url})));
336 foreach my $field (qw{authorurl}) {
337 eval q{use HTML::Entities};
338 $template->param($field => HTML::Entities::encode_entities($pagestate{$page}{meta}{$field}))
339 if exists $pagestate{$page}{meta}{$field} && $template->query(name => $field);
342 foreach my $field (qw{permalink}) {
343 if (exists $pagestate{$page}{meta}{$field} && $template->query(name => $field)) {
344 eval q{use HTML::Entities};
345 $template->param($field => HTML::Entities::encode_entities(IkiWiki::urlabs($pagestate{$page}{meta}{$field}, $config{url})));
349 foreach my $field (qw{description author}) {
350 eval q{use HTML::Entities};
351 $template->param($field => HTML::Entities::encode_numeric($pagestate{$page}{meta}{$field}))
352 if exists $pagestate{$page}{meta}{$field} && $template->query(name => $field);
355 foreach my $field (qw{license copyright}) {
356 if (exists $pagestate{$page}{meta}{$field} && $template->query(name => $field) &&
357 ($page eq $destpage || ! exists $pagestate{$destpage}{meta}{$field} ||
358 $pagestate{$page}{meta}{$field} ne $pagestate{$destpage}{meta}{$field})) {
359 $template->param($field => htmlize($page, $destpage, $pagestate{$page}{meta}{$field}));
368 # e.g. titlesort (also makes sense for author)
369 my $key = $pagestate{$page}{meta}{$meta . "sort"};
370 return $key if defined $key;
373 $key = $pagestate{$page}{meta}{$meta};
374 return $key if defined $key;
376 # fall back to closer-to-core things
377 if ($meta eq 'title') {
378 return pagetitle(IkiWiki::basename($page));
380 elsif ($meta eq 'date') {
381 return $IkiWiki::pagectime{$page};
383 elsif ($meta eq 'updated') {
384 return $IkiWiki::pagemtime{$page};
395 # turn glob into a safe regexp
396 my $re=IkiWiki::glob2re(shift);
399 if (exists $pagestate{$page}{meta}{$field}) {
400 $val=$pagestate{$page}{meta}{$field};
402 elsif ($field eq 'title') {
403 $val = pagetitle($page);
408 return IkiWiki::SuccessReason->new("$re matches $field of $page", $page => $IkiWiki::DEPEND_CONTENT, "" => 1);
411 return IkiWiki::FailReason->new("$re does not match $field of $page", $page => $IkiWiki::DEPEND_CONTENT, "" => 1);
415 return IkiWiki::FailReason->new("$page does not have a $field", $page => $IkiWiki::DEPEND_CONTENT);
419 package IkiWiki::PageSpec;
421 sub match_title ($$;@) {
422 IkiWiki::Plugin::meta::match("title", @_);
425 sub match_author ($$;@) {
426 IkiWiki::Plugin::meta::match("author", @_);
429 sub match_authorurl ($$;@) {
430 IkiWiki::Plugin::meta::match("authorurl", @_);
433 sub match_license ($$;@) {
434 IkiWiki::Plugin::meta::match("license", @_);
437 sub match_copyright ($$;@) {
438 IkiWiki::Plugin::meta::match("copyright", @_);
441 sub match_guid ($$;@) {
442 IkiWiki::Plugin::meta::match("guid", @_);
445 package IkiWiki::SortSpec;
449 error(gettext("sort=meta requires a parameter")) unless defined $meta;
451 if ($meta eq 'updated' || $meta eq 'date') {
452 return IkiWiki::Plugin::meta::get_sort_key($a, $meta)
454 IkiWiki::Plugin::meta::get_sort_key($b, $meta);
457 return IkiWiki::Plugin::meta::get_sort_key($a, $meta)
459 IkiWiki::Plugin::meta::get_sort_key($b, $meta);
462 # A prototype of how sort=title could behave in 4.0 or something