223 lines
6.3 KiB
Perl
223 lines
6.3 KiB
Perl
#!/usr/bin/perl
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# Ikiwiki metadata plugin.
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package IkiWiki::Plugin::meta;
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use warnings;
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use strict;
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use IkiWiki 2.00;
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my %meta;
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my %title;
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my %permalink;
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my %author;
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my %authorurl;
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my %license;
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my %copyright;
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sub import { #{{{
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hook(type => "needsbuild", id => "meta", call => \&needsbuild);
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hook(type => "preprocess", id => "meta", call => \&preprocess);
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hook(type => "pagetemplate", id => "meta", call => \&pagetemplate);
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} # }}}
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sub needsbuild (@) { #{{{
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my $needsbuild=shift;
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foreach my $page (keys %pagestate) {
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if (exists $pagestate{$page}{meta}) {
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if (grep { $_ eq $pagesources{$page} } @$needsbuild) {
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# remove state, it will be re-added
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# if the preprocessor directive is still
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# there during the rebuild
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delete $pagestate{$page}{meta};
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}
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}
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}
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}
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sub scrub ($) { #{{{
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if (IkiWiki::Plugin::htmlscrubber->can("sanitize")) {
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return IkiWiki::Plugin::htmlscrubber::sanitize(content => shift);
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}
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else {
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return shift;
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}
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} #}}}
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sub htmlize ($$$) { #{{{
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my $page = shift;
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my $destpage = shift;
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my $text = shift;
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$text=IkiWiki::htmlize($page, pagetype($pagesources{$page}),
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IkiWiki::linkify($page, $destpage,
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IkiWiki::preprocess($page, $destpage, $text)));
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# hack to get rid of enclosing junk added by markdown
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$text=~s!^<p>!!;
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$text=~s!</p>$!!;
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chomp $text;
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return $text;
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}
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sub preprocess (@) { #{{{
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return "" unless @_;
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my %params=@_;
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my $key=shift;
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my $value=$params{$key};
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delete $params{$key};
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my $page=$params{page};
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delete $params{page};
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my $destpage=$params{destpage};
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delete $params{destpage};
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delete $params{preview};
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eval q{use HTML::Entities};
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# Always decode, even if encoding later, since it might not be
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# fully encoded.
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$value=decode_entities($value);
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if ($key eq 'title') {
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$title{$page}=HTML::Entities::encode_numeric($value);
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}
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elsif ($key eq 'permalink') {
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$permalink{$page}=$value;
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push @{$meta{$page}}, scrub('<link rel="bookmark" href="'.encode_entities($value).'" />');
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}
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elsif ($key eq 'date') {
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eval q{use Date::Parse};
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if (! $@) {
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my $time = str2time($value);
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$IkiWiki::pagectime{$page}=$time if defined $time;
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}
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}
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elsif ($key eq 'stylesheet') {
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my $rel=exists $params{rel} ? $params{rel} : "alternate stylesheet";
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my $title=exists $params{title} ? $params{title} : $value;
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# adding .css to the value prevents using any old web
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# editable page as a stylesheet
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my $stylesheet=bestlink($page, $value.".css");
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if (! length $stylesheet) {
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return "[[meta ".gettext("stylesheet not found")."]]";
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}
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push @{$meta{$page}}, '<link href="'.urlto($stylesheet, $page).
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'" rel="'.encode_entities($rel).
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'" title="'.encode_entities($title).
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"\" type=\"text/css\" />";
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}
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elsif ($key eq 'openid') {
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if (exists $params{server}) {
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push @{$meta{$page}}, '<link href="'.encode_entities($params{server}).
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'" rel="openid.server" />';
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}
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push @{$meta{$page}}, '<link href="'.encode_entities($value).
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'" rel="openid.delegate" />';
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}
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elsif ($key eq 'license') {
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push @{$meta{$page}}, '<link rel="license" href="#page_license" />';
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$license{$page}=$value;
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}
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elsif ($key eq 'copyright') {
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push @{$meta{$page}}, '<link rel="copyright" href="#page_copyright" />';
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$copyright{$page}=$value;
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}
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elsif ($key eq 'redir') {
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return "" if $page ne $destpage;
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my $safe=0;
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if ($value !~ /^\w+:\/\//) {
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my ($redir_page, $redir_anchor) = split /\#/, $value;
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add_depends($page, $redir_page);
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my $link=bestlink($page, $redir_page);
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if (! length $link) {
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return "[[meta ".gettext("redir page not found")."]]";
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}
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$value=urlto($link, $page);
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$value.='#'.$redir_anchor if defined $redir_anchor;
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$safe=1;
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# redir cycle detection
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$pagestate{$page}{meta}{redir}=$link;
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my $at=$page;
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my %seen;
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while (exists $pagestate{$at}{meta}{redir}) {
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if ($seen{$at}) {
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return "[[meta ".gettext("redir cycle is not allowed")."]]";
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}
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$seen{$at}=1;
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$at=$pagestate{$at}{meta}{redir};
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}
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}
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else {
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$value=encode_entities($value);
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}
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my $delay=int(exists $params{delay} ? $params{delay} : 0);
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my $redir="<meta http-equiv=\"refresh\" content=\"$delay; URL=$value\">";
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if (! $safe) {
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$redir=scrub($redir);
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}
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push @{$meta{$page}}, $redir;
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}
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elsif ($key eq 'link') {
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return "[[meta ".gettext("link is no longer supported")."]]";
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}
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else {
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push @{$meta{$page}}, scrub('<meta name="'.encode_entities($key).
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'" content="'.encode_entities($value).'" />');
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if ($key eq 'author') {
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$author{$page}=$value;
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}
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elsif ($key eq 'authorurl') {
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$authorurl{$page}=$value;
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}
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}
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return "";
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} # }}}
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sub pagetemplate (@) { #{{{
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my %params=@_;
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my $page=$params{page};
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my $destpage=$params{destpage};
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my $template=$params{template};
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if (exists $meta{$page} && $template->query(name => "meta")) {
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# avoid duplicate meta lines
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my %seen;
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$template->param(meta => join("\n", grep { (! $seen{$_}) && ($seen{$_}=1) } @{$meta{$page}}));
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}
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if (exists $title{$page} && $template->query(name => "title")) {
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$template->param(title => $title{$page});
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$template->param(title_overridden => 1);
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}
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$template->param(permalink => $permalink{$page})
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if exists $permalink{$page} && $template->query(name => "permalink");
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$template->param(author => $author{$page})
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if exists $author{$page} && $template->query(name => "author");
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$template->param(authorurl => $authorurl{$page})
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if exists $authorurl{$page} && $template->query(name => "authorurl");
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if ($page ne $destpage &&
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((exists $license{$page} && ! exists $license{$destpage}) ||
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(exists $copyright{$page} && ! exists $copyright{$destpage}))) {
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# Force a scan of the destpage to get its copyright/license
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# info. If the info is declared after an inline, it will
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# otherwise not be available at this point.
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IkiWiki::scan($pagesources{$destpage});
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}
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if (exists $license{$page} && $template->query(name => "license") &&
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($page eq $destpage || ! exists $license{$destpage} ||
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$license{$page} ne $license{$destpage})) {
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$template->param(license => htmlize($page, $destpage, $license{$page}));
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}
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if (exists $copyright{$page} && $template->query(name => "copyright") &&
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($page eq $destpage || ! exists $copyright{$destpage} ||
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$copyright{$page} ne $copyright{$destpage})) {
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$template->param(copyright => htmlize($page, $destpage, $copyright{$page}));
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}
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} # }}}
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1
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