git.iko.soy/crush
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crush/internal/env/env.go
58 lines 833 B history raw
1package env
3import "os"
5type Env interface {
6 Get(key string) string
7 Env() []string
8}
10type osEnv struct{}
12// Get implements Env.
13func (o *osEnv) Get(key string) string {
14 return os.Getenv(key)
17func (o *osEnv) Env() []string {
18 env := os.Environ()
19 if len(env) == 0 {
20 return nil
21 }
22 return env
25func New() Env {
26 return &osEnv{}
29type mapEnv struct {
30 m map[string]string
33// Get implements Env.
34func (m *mapEnv) Get(key string) string {
35 if value, ok := m.m[key]; ok {
36 return value
37 }
38 return ""
41// Env implements Env.
42func (m *mapEnv) Env() []string {
43 if len(m.m) == 0 {
44 return nil
45 }
46 env := make([]string, 0, len(m.m))
47 for k, v := range m.m {
48 env = append(env, k+"="+v)
49 }
50 return env
53func NewFromMap(m map[string]string) Env {
54 if m == nil {
55 m = make(map[string]string)
56 }
57 return &mapEnv{m: m}