trim uuid

uuid/uuid.go

@@ -1,27 +1,5 @@
 package uuid
 
-//	MIT License
-//
-//	Copyright (c) Microsoft Corporation. All rights reserved.
-//
-//	Permission is hereby granted, free of charge, to any person obtaining a copy
-//	of this software and associated documentation files (the "Software"), to deal
-//	in the Software without restriction, including without limitation the rights
-//	to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-//	copies of the Software, and to permit persons to whom the Software is
-//	furnished to do so, subject to the following conditions:
-//
-//	The above copyright notice and this permission notice shall be included in all
-//	copies or substantial portions of the Software.
-//
-//	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-//	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-//	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-//	AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-//	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-//	OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-//	SOFTWARE
-
 import (
 	"crypto/rand"
 	"encoding/hex"
@@ -39,10 +17,14 @@ const (
 	V4
 	_
 
-	VariantNCS byte = iota
+	_ byte = iota
 	VariantRFC4122
-	VariantMicrosoft
-	VariantFuture
+)
+
+type (
+	// UUID representation compliant with specification
+	// described in RFC 4122.
+	UUID [Size]byte
 )
 
 var (
@@ -53,12 +35,6 @@ var (
 	Nil = UUID{}
 )
 
-type (
-	// UUID representation compliant with specification
-	// described in RFC 4122.
-	UUID [Size]byte
-)
-
 // NewV4 returns random generated UUID.
 func NewV4() (UUID, error) {
 	u := UUID{}
@@ -76,18 +52,7 @@ func (u *UUID) setVersion(v byte) {
 }
 
 func (u *UUID) setVariant(v byte) {
-	switch v {
-	case VariantNCS:
-		u[8] = u[8]&(0xff>>1) | (0x00 << 7)
-	case VariantRFC4122:
-		u[8] = u[8]&(0xff>>2) | (0x02 << 6)
-	case VariantMicrosoft:
-		u[8] = u[8]&(0xff>>3) | (0x06 << 5)
-	case VariantFuture:
-		fallthrough
-	default:
-		u[8] = u[8]&(0xff>>3) | (0x07 << 5)
-	}
+	u[8] = u[8]&(0xff>>2) | (0x02 << 6)
 }
 
 func (u UUID) String() string {