* Add an orphans plugin for finding pages that nothing links to.

* Removed backlinks page, which it turns out nothing used.

1 files changed, 40 insertions, 0 deletions

diff --git a/IkiWiki/Plugin/orphans.pm b/IkiWiki/Plugin/orphans.pm
new file mode 100644
index 000000000..06b51bddc
--- /dev/null
+++ b/IkiWiki/Plugin/orphans.pm
@@ -0,0 +1,40 @@
+#!/usr/bin/perl
+# Provides a list of pages no other page links to.
+package IkiWiki::Plugin::orphans;
+
+use warnings;
+use strict;
+
+sub import { #{{{
+	IkiWiki::register_plugin("preprocess", "orphans", \&preprocess);
+} # }}}
+
+sub preprocess (@) { #{{{
+	my %params=@_;
+	$params{pages}="*" unless defined $params{pages};
+	
+	# Needs to update whenever a page is added or removed, so
+	# register a dependency.
+	IkiWiki::add_depends($params{page}, $params{pages});
+	
+	my %linkedto;
+	foreach my $p (keys %IkiWiki::links) {
+		map { $linkedto{IkiWiki::bestlink($p, $_)}=1 if length $_ }
+			@{$IkiWiki::links{$p}};
+	}
+	
+	my @orphans;
+	foreach my $page (keys %IkiWiki::renderedfiles) {
+		next if $linkedto{$page};
+		next unless IkiWiki::globlist_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 && IkiWiki::bestlink($page, $_) ne $page } @{$IkiWiki::links{$page}};
+		push @orphans, $page;
+	}
+	
+	return "All pages are linked to by other pages." unless @orphans;
+	return "<ul>\n".join("\n", map { "<li>".IkiWiki::htmllink($params{page}, $_, 1)."</li>" } sort @orphans)."</ul>\n";
+} # }}}
+
+1