xenv

func Clear ¶

func Clear()

func Expand ¶

func Expand(data string) string

Expand replaces ${var} or $var in the string according to the values of the current environment variables. References to undefined variables are replaced by the empty string.

func ExpandEnv ¶

func ExpandEnv(value string) string

ExpandEnv 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 accept value formats "${env}" , "${env||}}" , "${env||defaultValue}" , "defaultvalue". Examples:

v1 := config.ExpandValueEnv("${GOPATH}")			// return the GOPATH environment variable.
v2 := config.ExpandValueEnv("${GOAsta||/usr/local/go}")	// return the default value "/usr/local/go/".
v3 := config.ExpandValueEnv("Astaxie")				// return the value "Astaxie".

func Get ¶

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

func GetEnv ¶

func GetEnv(names ...string) string

func GetSys ¶

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

func GetSysEnv ¶

func GetSysEnv(names ...string) string

func Lookup ¶

func Lookup(key string) (string, bool)

func Set ¶

func Set(key, value string) error

func SetSys ¶

func SetSys(key, value string) error

func TrimPrefix ¶

func TrimPrefix(key string) string

func Unsetenv ¶

func Unsetenv(key string) error

func WithPrefix ¶

func WithPrefix(key string) string