cli

type Choice struct {
	//If given, the choice can be selected by pressing the key that
	//produces this character.
	Shortcut byte
	//The display string that describes this choice.
	Text string
	//The string to return from Implementation.Query().
	Return string
}

type Command struct {
	Program []string
	WorkDir string
}

type CommandRunner func(c Command, stdin io.Reader, stdout, stderr io.Writer) error

type Implementation struct {

	//If this flag is set, only ShowResult() will write into stdout; everything
	//else that usually goes to stdout goes to stderr instead.
	//
	//This is useful when gofu is expected to output a certain value to stdout
	//which is used by the next program in the pipe, and additional output from
	//subprocesses could confuse the stdout handler.
	StdoutProtected bool
	// contains filtered or unexported fields
}

type TUI interface {
	//ReadLine reads a line from stdin (if tty: uses canonical mode).
	ReadLine(prompt string) (string, error)
	//Confirm displays a yes/no question and returns whether the user answered "yes".
	Confirm(question string) (bool, error)
	//Query displays a question and a set of answers and allows the user to select
	//one of the answers. Returns the Return attribute of the selected Choice.
	Query(prompt string, choices ...Choice) (string, error)
	//Print writes the given string (potentially including ANSI escape codes) to
	//the given writer. At this point, it can be decided whether to strip out the
	//ANSI escape codes.
	Print(w io.Writer, msg string)
}