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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;
sub import { #{{{
hook(type => "preprocess", id => "orphans", call => \&preprocess);
} # }}}
sub preprocess (@) { #{{{
my %params=@_;
$params{pages}="*" unless defined $params{pages};
# Needs to update whenever a page is added or removed, so
# register a dependency.
add_depends($params{page}, $params{pages});
my %linkedto;
foreach my $p (keys %links) {
map { $linkedto{bestlink($p, $_)}=1 if length $_ }
@{$links{$p}};
}
my @orphans;
foreach my $page (keys %renderedfiles) {
next if $linkedto{$page};
next unless pagespec_match($page, $params{pages});
# If the page has a link to some other page, it's
# indirectly linked to a page via that page's backlinks.
next if grep {
length $_ &&
($_ !~ /\/Discussion$/i || ! $config{discussion}) &&
bestlink($page, $_) !~ /^($page|)$/
} @{$links{$page}};
push @orphans, $page;
}
return "All pages are linked to by other pages." unless @orphans;
return "<ul>\n".join("\n", map { "<li>".htmllink($params{page}, $params{destpage}, $_, 1)."</li>" } sort @orphans)."</ul>\n";
} # }}}
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