42 lines
1.0 KiB
Go
42 lines
1.0 KiB
Go
// Copyright 2016 Russell Haering et al.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// https://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package uuid
|
|
|
|
// relevant bits from https://github.com/abneptis/GoUUID/blob/master/uuid.go
|
|
|
|
import (
|
|
"crypto/rand"
|
|
"fmt"
|
|
)
|
|
|
|
type UUID [16]byte
|
|
|
|
// NewV4 returns random generated UUID.
|
|
func NewV4() *UUID {
|
|
u := &UUID{}
|
|
_, err := rand.Read(u[:16])
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
|
|
u[8] = (u[8] | 0x80) & 0xBf
|
|
u[6] = (u[6] | 0x40) & 0x4f
|
|
return u
|
|
}
|
|
|
|
func (u *UUID) String() string {
|
|
return fmt.Sprintf("%x-%x-%x-%x-%x", u[:4], u[4:6], u[6:8], u[8:10], u[10:])
|
|
}
|