pagestats: add `among` parameter, which only counts links from specified pages

[ikiwiki.git] / IkiWiki / Plugin / pagestats.pm

diff --git a/IkiWiki/Plugin/pagestats.pm b/IkiWiki/Plugin/pagestats.pm
index 5dd2f337b4bc1b8822e097f3fcef714ee3c1ac42..874ead7e6de669c1d33c66b74984ef90504f9b8e 100644 (file)
--- a/IkiWiki/Plugin/pagestats.pm
+++ b/IkiWiki/Plugin/pagestats.pm
@@ -38,13 +38,22 @@ sub preprocess (@) {
        # Needs to update whenever a page is added or removed, so
        # register a dependency.
        add_depends($params{page}, $params{pages});
+       add_depends($params{page}, $params{among}) if exists $params{among};
        
        my %counts;
        my $max = 0;
        foreach my $page (pagespec_match_list([keys %links],
                        $params{pages}, location => $params{page})) {
                use IkiWiki::Render;
-               $counts{$page} = scalar(IkiWiki::backlinks($page));
+
+               my @backlinks = IkiWiki::backlink_pages($page);
+
+               if (exists $params{among}) {
+                       @backlinks = pagespec_match_list(\@backlinks,
+                               $params{among}, location => $params{page});
+               }
+
+               $counts{$page} = scalar(@backlinks);
                $max = $counts{$page} if $counts{$page} > $max;
        }