First commit

middleware/zone.go

@@ -0,0 +1,21 @@
+package middleware
+
+import "strings"
+
+type Zones []string
+
+// Matches checks to see if other matches p.
+// The match will return the most specific zones
+// that matches other. The empty string signals a not found
+// condition.
+func (z Zones) Matches(qname string) string {
+	zone := ""
+	for _, zname := range z {
+		if strings.HasSuffix(qname, zname) {
+			if len(zname) > len(zone) {
+				zone = zname
+			}
+		}
+	}
+	return zone
+}