ui-refs.c: improve handling of lightweight tags

When a lightweight tag is referencing a commit object, cgit now uses
the commit date when comparing tag age. Also, the commitdate and author
info is printed in the refs view, making lightweight tags appear similar
to annotated tags.

Signed-off-by: Stefan Bühler <lighttpd@stbuehler.de>
Signed-off-by: Lars Hjemli <hjemli@gmail.com>

ui-refs.c

@@ -46,8 +46,19 @@ static int cmp_tag_age(const void *a, const void *b)
 {
 	struct refinfo *r1 = *(struct refinfo **)a;
 	struct refinfo *r2 = *(struct refinfo **)b;
+	int r1date, r2date;
 
-	return cmp_age(r1->tag->tagger_date, r2->tag->tagger_date);
+	if (r1->object->type != OBJ_COMMIT)
+		r1date = r1->tag->tagger_date;
+	else
+		r1date = r1->commit->committer_date;
+
+	if (r2->object->type != OBJ_COMMIT)
+		r2date = r2->tag->tagger_date;
+	else
+		r2date = r2->commit->committer_date;
+
+	return cmp_age(r1date, r2date);
 }
 
 static int print_branch(struct refinfo *ref)
@@ -145,6 +156,12 @@ static int print_tag(struct refinfo *ref)
 			print_tag_downloads(ctx.repo, name);
 		else
 			cgit_object_link(ref->object);
+		html("</td><td>");
+		if (ref->object->type == OBJ_COMMIT)
+			html(ref->commit->author);
+		html("</td><td colspan='2'>");
+		if (ref->object->type == OBJ_COMMIT)
+			cgit_print_age(ref->commit->commit->date, -1, NULL);
 		html("</td></tr>\n");
 	}
 	return 0;