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
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
|
/*
* Copyright (C) 2014 ~ 2018 Deepin Technology Co., Ltd.
*
* Author: jouyouyun <jouyouwen717@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package utils
import (
"crypto/rand"
"fmt"
"io"
"reflect"
)
func IsElementEqual(e1, e2 interface{}) bool {
if e1 == nil && e2 == nil {
return true
}
return reflect.DeepEqual(e1, e2)
}
func IsElementInList(e interface{}, list interface{}) bool {
if list == nil {
return false
}
v := reflect.ValueOf(list)
if !v.IsValid() {
return false
}
if v.Type().Kind() == reflect.Slice ||
v.Type().Kind() == reflect.Array {
l := v.Len()
for i := 0; i < l; i++ {
if IsElementEqual(e, v.Index(i).Interface()) {
return true
}
}
}
return false
}
func GenUuid() string {
uuid := make([]byte, 16)
n, err := io.ReadFull(rand.Reader, uuid)
if n != len(uuid) || err != nil {
panic("This can failed?")
}
// variant bits; see section 4.1.1
uuid[8] = uuid[8]&^0xc0 | 0x80
// version 4 (pseudo-random); see section 4.1.3
uuid[6] = uuid[6]&^0xf0 | 0x40
return fmt.Sprintf("%x-%x-%x-%x-%x", uuid[0:4], uuid[4:6], uuid[6:8], uuid[8:10], uuid[10:])
}
func RandString(n int) string {
const alphanum = "0123456789abcdef"
var bytes = make([]byte, n)
_, _ = rand.Read(bytes)
for i, b := range bytes {
bytes[i] = alphanum[b%byte(len(alphanum))]
}
return string(bytes)
}
func IsInterfaceNil(v interface{}) bool {
if v == nil {
return true
}
value := reflect.ValueOf(v)
// The argument must be a chan, func, interface, map, pointer, or
// slice value; if it is not, Value.IsNil panics.
switch value.Kind() {
case reflect.Chan, reflect.Func, reflect.Map, reflect.Ptr, reflect.Interface, reflect.Slice:
return value.IsNil()
}
// should be a not nil type for rest cases
return false
}
|
