Method Msg

msg/msg.go:159–190

Msg prints a message with optional arguments, that can be printed, of varying types.

(msg string, args ...interface{})

// Msg prints a message with optional arguments, that can be printed, of
// varying types.
func (m *Messenger) Msg(msg string, args ...interface{}) {
	// When operations in Glide are happening concurrently messaging needs to be
	// locked to avoid displaying one message in the middle of another one.
	m.Lock()
	defer m.Unlock()
	// Get rid of the annoying fact that messages need \n at the end, but do
	// it in a backward compatible way.
	if !strings.HasSuffix(msg, "\n") {
		msg += "\n"
	}

	if len(args) == 0 {
		fmt.Fprint(m.Stderr, msg)
	} else {
		fmt.Fprintf(m.Stderr, msg, args...)
	}

	// If an arg is a vcs error print the output if in debug mode. This is
	// capured here rather than calling Debug because concurrent operations
	// could cause other messages to appear between the initial error and the
	// debug output by unlocking and calling Debug.
	if len(args) != 0 && !m.Quiet && m.IsDebugging {
		if err, ok := args[len(args)-1].(error); ok {
			switch t := err.(type) {
			case *vcs.LocalError:
				fmt.Fprintf(m.Stderr, "[DEBUG]\tOutput was: %s", strings.TrimSpace(t.Out()))
			case *vcs.RemoteError:
				fmt.Fprintf(m.Stderr, "[DEBUG]\tOutput was: %s", strings.TrimSpace(t.Out()))
			}
		}
	}
}

// Msg prints a message with optional arguments, that can be printed, of
// varying types using the Default Messenger.