-
Notifications
You must be signed in to change notification settings - Fork 0
/
env.go
140 lines (116 loc) · 2.42 KB
/
env.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
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
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
package util
import (
"fmt"
"io/ioutil"
"os"
"strconv"
"strings"
)
var (
globalEnvs *Envs
ErrEmptyKey = fmt.Errorf("env: empty key")
ErrValueNotNumber = fmt.Errorf("env: the value is not a number")
)
func init() {
globalEnvs = NewEnvs()
}
func GetEnv(key string) (string, error) {
return globalEnvs.Get(key)
}
func MustGetEnv(key string) string {
return globalEnvs.MustGet(key)
}
func GetIntEnv(key string) (int, error) {
return globalEnvs.GetInt(key)
}
func MustGetIntEnv(key string) int {
return globalEnvs.MustGetInt(key)
}
func SetEnv(key, val string) error {
return globalEnvs.Set(key, val)
}
func MustSetEnv(key, val string) {
globalEnvs.MustSet(key, val)
}
func SetIntEnv(key string, val int) error {
return globalEnvs.SetInt(key, val)
}
func MustSetIntEnv(key string, val int) {
globalEnvs.MustSetInt(key, val)
}
func ReadEnvFile(path string) error {
return globalEnvs.ReadFile(path)
}
type Envs struct {
}
func NewEnvs() *Envs {
return &Envs{}
}
func (e *Envs) Get(key string) (string, error) {
if key == "" {
return "", ErrEmptyKey
}
return os.Getenv(key), nil
}
func (e *Envs) MustGet(key string) string {
val, err := e.Get(key)
if err != nil {
panic(err)
}
return val
}
func (e *Envs) GetInt(key string) (int, error) {
val, err := strconv.Atoi(os.Getenv(key))
if err != nil {
return -1, ErrValueNotNumber
}
return val, nil
}
func (e *Envs) MustGetInt(key string) int {
val, err := e.GetInt(key)
if err != nil {
panic(err)
}
return val
}
func (e *Envs) Set(key, val string) error {
if key == "" {
return ErrEmptyKey
}
if err := os.Setenv(key, val); err != nil {
return fmt.Errorf("env: %w", err)
}
return nil
}
func (e *Envs) MustSet(key, val string) {
err := e.Set(key, val)
if err != nil {
panic(err)
}
}
func (e *Envs) SetInt(key string, val int) error {
return e.Set(key, strconv.Itoa(val))
}
func (e *Envs) MustSetInt(key string, val int) {
err := e.SetInt(key, val)
if err != nil {
panic(err)
}
}
func (e *Envs) ReadFile(path string) error {
data, err := ioutil.ReadFile(path)
if err != nil {
return fmt.Errorf("env read file: %w", err)
}
for _, line := range strings.Split(string(data), "\n") {
tokens := strings.SplitN(line, "=", 2)
if len(tokens) == 2 {
key := strings.TrimSpace(tokens[0])
val := strings.TrimSpace(tokens[1])
if err := e.Set(key, val); err != nil {
return fmt.Errorf("env read file: %w", err)
}
}
}
return nil
}