env

Documentation

Index

• Variables
• func Expand(value string, keyHandles ...func(string) string) string
• func Get(names ...string) string
• func GetBoolVal(val *bool, names ...string)
• func GetFloatVal(val *float64, names ...string)
• func GetIntVal(val *int, names ...string)
• func GetWith(val *string, names ...string)
• func Key(key string) string
• func KeyOf(str ...string) []string
• func List() map[string]string
• func Lookup(key string) (string, bool)
• func Set(key, value string) error
• func UnSetenv(key string) error

Variables

var Cfg = struct {
	// Prefix 系统环境变量前缀
	Prefix string

	// Separator 分隔符
	Separator string
}{
	Prefix:    "",
	Separator: "_",
}

Functions

func Expand

func Expand(value string, keyHandles ...func(string) string) string

Expand returns value of convert with environment variable. Return environment variable if value start with "${" and end with "}". Return default value if environment variable is empty or not exist.

It accepts value formats "${env}" ,"${env||defaultValue}" , "defaultValue". Examples:

_ = config.Expand("${GOPATH}")
_ = config.Expand("${GOPATH||/usr/local/go}")
_ = config.Expand("hello")

func Get

func Get(names ...string) string

func GetBoolVal

func GetBoolVal(val *bool, names ...string)

func GetFloatVal

func GetFloatVal(val *float64, names ...string)

func GetIntVal

func GetIntVal(val *int, names ...string)

func GetWith

func GetWith(val *string, names ...string)

func Key

func Key(key string) string

func KeyOf

func KeyOf(str ...string) []string

func List

func List() map[string]string

func Lookup

func Lookup(key string) (string, bool)

func Set

func Set(key, value string) error

func UnSetenv

func UnSetenv(key string) error