flag

func Provider ¶

func Provider(ctx *cli.Context, flagDelim string, ko *koanf.Koanf) *Cli

Provider returns a commandline flags provider that returns a nested map[string]interface{} where the nesting hierarchy of keys are defined by flagDelim. For instance, the flagDelim "." will convert the flag name `parent.child.key: 1` to `{parent: {child: {key: 1}}}`. It takes an optional (but recommended) Koanf instance to see if the the flags defined have been set from other providers, for instance, a config file. If they are not, then the default values of the flags are merged. If they do exist, the flag values are not merged but only the values that have been explicitly set in the command line are merged.