--- /dev/null
+// Copyright 2016 Google Inc. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package uuid
+
+import (
+ "errors"
+ "fmt"
+)
+
+// MarshalText implements encoding.TextMarshaler.
+func (u UUID) MarshalText() ([]byte, error) {
+ if len(u) != 16 {
+ return nil, nil
+ }
+ var js [36]byte
+ encodeHex(js[:], u)
+ return js[:], nil
+}
+
+// UnmarshalText implements encoding.TextUnmarshaler.
+func (u *UUID) UnmarshalText(data []byte) error {
+ if len(data) == 0 {
+ return nil
+ }
+ id := Parse(string(data))
+ if id == nil {
+ return errors.New("invalid UUID")
+ }
+ *u = id
+ return nil
+}
+
+// MarshalBinary implements encoding.BinaryMarshaler.
+func (u UUID) MarshalBinary() ([]byte, error) {
+ return u[:], nil
+}
+
+// UnmarshalBinary implements encoding.BinaryUnmarshaler.
+func (u *UUID) UnmarshalBinary(data []byte) error {
+ if len(data) == 0 {
+ return nil
+ }
+ if len(data) != 16 {
+ return fmt.Errorf("invalid UUID (got %d bytes)", len(data))
+ }
+ var id [16]byte
+ copy(id[:], data)
+ *u = id[:]
+ return nil
+}
+
+// MarshalText implements encoding.TextMarshaler.
+func (u Array) MarshalText() ([]byte, error) {
+ var js [36]byte
+ encodeHex(js[:], u[:])
+ return js[:], nil
+}
+
+// UnmarshalText implements encoding.TextUnmarshaler.
+func (u *Array) UnmarshalText(data []byte) error {
+ id := Parse(string(data))
+ if id == nil {
+ return errors.New("invalid UUID")
+ }
+ *u = id.Array()
+ return nil
+}
+
+// MarshalBinary implements encoding.BinaryMarshaler.
+func (u Array) MarshalBinary() ([]byte, error) {
+ return u[:], nil
+}
+
+// UnmarshalBinary implements encoding.BinaryUnmarshaler.
+func (u *Array) UnmarshalBinary(data []byte) error {
+ if len(data) != 16 {
+ return fmt.Errorf("invalid UUID (got %d bytes)", len(data))
+ }
+ copy(u[:], data)
+ return nil
+}