env

Documentation

Index

• func Lookup(name string, vars []string) (string, bool)
• func RequireListWithEnvFallback(cctx *cli.Context, name string, envName string) ([]string, error)
• func RequireStringWithEnvFallback(cctx *cli.Context, name string, envName string) (string, error)

Functions

func Lookup

func Lookup(name string, vars []string) (string, bool)

Lookup is the equivalent of os.LookupEnv, only you are able to provide the list of environment variables. To use this as os.LookupEnv would be used, simply call `env.Lookup("ENVIRONMENT_VARIABLE", os.Environ())`

func RequireListWithEnvFallback

func RequireListWithEnvFallback(cctx *cli.Context, name string, envName string) ([]string, error)

RequireListWithEnvFallback first checks the CLI for a flag with the required name. If this is empty, it falls back to taking the environment variable. Sadly, we cannot use cli.Flag.EnvVars for this due to it potentially leaking environment variables as default values in usage-errors.

func RequireStringWithEnvFallback

func RequireStringWithEnvFallback(cctx *cli.Context, name string, envName string) (string, error)