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#!/usr/bin/perl
# Ikiwiki metadata plugin.
package IkiWiki::Plugin::meta;
use warnings;
use strict;
use IkiWiki 2.00;
my %meta;
my %title;
my %permalink;
my %author;
my %authorurl;
my %license;
my %copyright;
sub import { #{{{
hook(type => "preprocess", id => "meta", call => \&preprocess, scan => 1);
hook(type => "filter", id => "meta", call => \&filter);
hook(type => "pagetemplate", id => "meta", call => \&pagetemplate);
} # }}}
sub filter (@) { #{{{
my %params=@_;
$meta{$params{page}}='';
return $params{content};
} # }}}
sub scrub ($) { #{{{
if (IkiWiki::Plugin::htmlscrubber->can("sanitize")) {
return IkiWiki::Plugin::htmlscrubber::sanitize(content => shift);
}
else {
return shift;
}
} #}}}
sub preprocess (@) { #{{{
if (! @_) {
return "";
}
my %params=@_;
my $key=shift;
my $value=$params{$key};
delete $params{$key};
my $page=$params{page};
delete $params{page};
my $destpage=$params{destpage};
delete $params{destpage};
delete $params{preview};
eval q{use HTML::Entities};
# Always dencode, even if encoding later, since it might not be
# fully encoded.
$value=decode_entities($value);
if ($key eq 'link') {
if (%params) {
$meta{$page}.=scrub("<link href=\"".encode_entities($value)."\" ".
join(" ", map { encode_entities($_)."=\"".encode_entities(decode_entities($params{$_}))."\"" } keys %params).
" />\n");
}
else {
# hidden WikiLink
push @{$links{$page}}, $value;
}
}
elsif ($key eq 'title') {
$title{$page}=HTML::Entities::encode_numeric($value);
}
elsif ($key eq 'permalink') {
$permalink{$page}=$value;
$meta{$page}.=scrub("<link rel=\"bookmark\" href=\"".encode_entities($value)."\" />\n");
}
elsif ($key eq 'date') {
eval q{use Date::Parse};
if (! $@) {
my $time = str2time($value);
$IkiWiki::pagectime{$page}=$time if defined $time;
}
}
elsif ($key eq 'stylesheet') {
my $rel=exists $params{rel} ? $params{rel} : "alternate stylesheet";
my $title=exists $params{title} ? $params{title} : $value;
# adding .css to the value prevents using any old web
# editable page as a stylesheet
my $stylesheet=bestlink($page, $value.".css");
if (! length $stylesheet) {
return "[[meta ".gettext("stylesheet not found")."]]";
}
$meta{$page}.='<link href="'.urlto($stylesheet, $page).
'" rel="'.encode_entities($rel).
'" title="'.encode_entities($title).
"\" type=\"text/css\" />\n";
}
elsif ($key eq 'openid') {
if (exists $params{server}) {
$meta{$page}.='<link href="'.encode_entities($params{server}).
"\" rel=\"openid.server\" />\n";
}
$meta{$page}.='<link href="'.encode_entities($value).
"\" rel=\"openid.delegate\" />\n";
}
elsif ($key eq 'license') {
$meta{$page}.="<link rel=\"license\" href=\"#page_license\" />\n";
$license{$page}=$value;
}
elsif ($key eq 'copyright') {
$meta{$page}.="<link rel=\"copyright\" href=\"#page_copyright\" />\n";
$copyright{$page}=$value;
}
elsif ($key eq 'forward') {
my $delay=0;
my $dest_url;
my $text;
if (exists $params{delay}) {
$delay=$params{delay};
}
# Is this a wikilink?
if ($value =~ /^\[\[(.*)\]\]$/) {
$text=htmllink($page, $destpage, $1);
$dest_url=urlto(bestlink($page, $1), $destpage);
} else {
$text="<a href=\"$dest_url\">$dest_url</a>";
$dest_url=$value;
}
# TODO. $meta{$page}.=scrub("<meta http-equiv=\"refresh\" content=\"$delay; URL=$dest_url\">");
$meta{$page}.="<meta http-equiv=\"refresh\" content=\"$delay; URL=$dest_url\">";
return "You are being forwarded to $text.";
}
else {
$meta{$page}.=scrub("<meta name=\"".encode_entities($key).
"\" content=\"".encode_entities($value)."\" />\n");
if ($key eq 'author') {
$author{$page}=$value;
}
elsif ($key eq 'authorurl') {
$authorurl{$page}=$value;
}
}
return "";
} # }}}
sub pagetemplate (@) { #{{{
my %params=@_;
my $page=$params{page};
my $destpage=$params{destpage};
my $template=$params{template};
$template->param(meta => $meta{$page})
if exists $meta{$page} && $template->query(name => "meta");
if (exists $title{$page} && $template->query(name => "title")) {
$template->param(title => $title{$page});
$template->param(title_overridden => 1);
}
$template->param(permalink => $permalink{$page})
if exists $permalink{$page} && $template->query(name => "permalink");
$template->param(author => $author{$page})
if exists $author{$page} && $template->query(name => "author");
$template->param(authorurl => $authorurl{$page})
if exists $authorurl{$page} && $template->query(name => "authorurl");
if ($page ne $destpage &&
((exists $license{$page} && ! exists $license{$destpage}) ||
(exists $copyright{$page} && ! exists $copyright{$destpage}))) {
# Force a scan of the destpage to get its copyright/license
# info. If the info is declared after an inline, it will
# otherwise not be available at this point.
IkiWiki::scan($pagesources{$destpage});
}
if (exists $license{$page} && $template->query(name => "license") &&
($page eq $destpage || ! exists $license{$destpage} ||
$license{$page} ne $license{$destpage})) {
$template->param(license => IkiWiki::linkify($page, $destpage, $license{$page}));
}
if (exists $copyright{$page} && $template->query(name => "copyright") &&
($page eq $destpage || ! exists $copyright{$destpage} ||
$copyright{$page} ne $copyright{$destpage})) {
$template->param(copyright => IkiWiki::linkify($page, $destpage, $copyright{$page}));
}
} # }}}
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