envtemplate

func LookupEnv ¶ added in v1.83.0

func LookupEnv(name string) (string, bool)

LookupEnv returns the expanded environment variable value for the given name.

The expanded means that `%{ENV_VAR}` placeholders in env var value are replaced with the corresponding ENV_VAR values (recursively).

false is returned if environment variable isn't found.

func ReplaceBytes ¶ added in v1.83.0

func ReplaceBytes(b []byte) ([]byte, error)

ReplaceBytes replaces `%{ENV_VAR}` placeholders in b with the corresponding ENV_VAR values.

Error is returned if ENV_VAR isn't set for some `%{ENV_VAR}` placeholder.

func ReplaceString ¶ added in v1.83.0

func ReplaceString(s string) (string, error)

ReplaceString replaces `%{ENV_VAR}` placeholders in b with the corresponding ENV_VAR values.

Error is returned if ENV_VAR isn't set for some `%{ENV_VAR}` placeholder.