/
uuid.go
41 lines (35 loc) · 875 Bytes
/
uuid.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
/***********************************************************************
MicroCore
Copyright 2020 - 2020 by Danyil Dobryvechir (dobrivecher@yahoo.com ddobryvechir@gmail.com)
************************************************************************/
package dvcrypt
import (
"crypto/rand"
"fmt"
"log"
)
func GetUuidByByteArray(b []byte) string {
uuid := fmt.Sprintf("%x-%x-%x-%x-%x",
b[0:4], b[4:6], b[6:8], b[8:10], b[10:])
return uuid
}
func PutUInt64ToByteArray(b []byte, a uint64) {
for i := 0; i < 8; i++ {
b[i] = byte(a & 255)
a <<= 8
}
}
func GetUuidByLong(a1 uint64, a2 uint64) string {
b := make([]byte, 16)
PutUInt64ToByteArray(b, a1)
PutUInt64ToByteArray(b[8:], a2)
return GetUuidByByteArray(b)
}
func GetRandomUuid() string {
b := make([]byte, 16)
_, err := rand.Read(b)
if err != nil {
log.Print(err)
}
return GetUuidByByteArray(b)
}