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#!/usr/bin/perl
# Provides a list of pages no other page links to.
package IkiWiki::Plugin::orphans;
use warnings;
use strict;
use IkiWiki 3.00;
sub import {
hook(type => "getsetup", id => "orphans", call => \&getsetup);
hook(type => "preprocess", id => "orphans", call => \&preprocess);
}
sub getsetup () {
return
plugin => {
safe => 1,
rebuild => undef,
section => "widget",
},
}
sub preprocess (@) {
my %params=@_;
$params{pages}="*" unless defined $params{pages};
# Needs to update whenever a link changes, on any page
# since any page could link to one of the pages we're
# considering as orphans.
add_depends($params{page}, "*", deptype("links"));
my @orphans=pagespec_match_list($params{page}, $params{pages},
# update when orphans are added/removed
deptype => deptype("presence"),
filter => sub {
my $page=shift;
# Filter out pages that other pages link to.
return 1 if IkiWiki::backlink_pages($page);
# Toplevel index is assumed to never be orphaned.
return 1 if $page eq 'index';
# If the page has a link to some other page, it's
# indirectly linked via that page's backlinks.
return 1 if grep {
length $_ &&
($_ !~ /\/\Q$config{discussionpage}\E$/i || ! $config{discussion}) &&
bestlink($page, $_) !~ /^(\Q$page\E|)$/
} @{$links{$page}};
return 0;
},
);
return gettext("All pages have other pages linking to them.") unless @orphans;
return "<ul>\n".
join("\n",
map {
"<li>".
htmllink($params{page}, $params{destpage}, $_,
noimageinline => 1).
"</li>"
} sort @orphans).
"</ul>\n";
}
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