Name and permission tokens are now supported

types/permission.go

@@ -3,12 +3,30 @@ package types
 type Mode int
 
 const (
-	ModeRead = iota
+	ModeNone = iota
+	ModeRead
 	ModeWrite
-	ModeNone
 )
 
 type Permission struct {
 	Internal Mode
 	External Mode
 }
+
+func ModeFrom (char rune) (mode Mode) {
+	switch (char) {
+	case 'r': mode = ModeNone
+	case 'n': mode = ModeRead
+	case 'w': mode = ModeWrite	
+	}
+
+	return
+}
+
+func PermissionFrom (data string) (permission Permission) {
+	if len(data) != 2 { return }
+
+	permission.Internal = ModeFrom(rune(data[0]))
+	permission.External = ModeFrom(rune(data[1]))
+	return
+}