base

type Command struct {
	// Run runs the command.
	// The args are the arguments after the command name.
	Run func(cmd *Command, args []string)

	// UsageLine is the one-line usage message.
	// The words between the first word (the "executable name") and the first flag or argument in the line are taken to be the command name.
	//
	// UsageLine supports go template syntax. It's recommended to use "{{.Exec}}" instead of hardcoding name
	UsageLine string

	// Short is the short description shown in the 'go help' output.
	//
	// Note: Short does not support go template syntax.
	Short string

	// Long is the long message shown in the 'go help <this-command>' output.
	//
	// Long supports go template syntax. It's recommended to use "{{.Exec}}", "{{.LongName}}" instead of hardcoding strings
	Long string

	// Flag is a set of flags specific to this command.
	Flag flag.FlagSet

	// CustomFlags indicates that the command will do its own
	// flag parsing.
	CustomFlags bool

	// Commands lists the available commands and help topics.
	// The order here is the order in which they are printed by 'go help'.
	// Note that subcommands are in general best avoided.
	Commands []*Command
}

type CommandEnvHolder struct {
	// Excutable name of current binary
	Exec string
	// commands column width of current command
	CommandsWidth int
}