update

location.go

@@ -0,0 +1,20 @@
+package main
+
+import "strings"
+
+type Location string
+
+func (l Location) Box() string {
+	s := strings.Split(string(l), `:`)
+	return s[0]
+}
+
+func (l Location) Path() string {
+	s := strings.Split(string(l), `:`)
+	return s[1]
+}
+
+func (l Location) Valid() bool {
+	s := strings.Split(string(l), `:`)
+	return len(s) == 2
+}