Method Set

ip_slice.go:25–55

Set converts, and assigns, the comma-separated IP argument string representation as the []net.IP value of this flag. If Set is called on a flag that already has a []net.IP assigned, the newly converted values will be appended.

(val string)

// Set converts, and assigns, the comma-separated IP argument string representation as the []net.IP value of this flag.
// If Set is called on a flag that already has a []net.IP assigned, the newly converted values will be appended.
func (s *ipSliceValue) Set(val string) error {

	// remove all quote characters
	rmQuote := strings.NewReplacer(`"`, "", `'`, "", "`", "")

	// read flag arguments with CSV parser
	ipStrSlice, err := readAsCSV(rmQuote.Replace(val))
	if err != nil && err != io.EOF {
		return err
	}

	// parse ip values into slice
	out := make([]net.IP, 0, len(ipStrSlice))
	for _, ipStr := range ipStrSlice {
		ip := net.ParseIP(strings.TrimSpace(ipStr))
		if ip == nil {
			return fmt.Errorf("invalid string being converted to IP address: %s", ipStr)
		}
		out = append(out, ip)
	}

	if !s.changed {
		*s.value = out
	} else {
		*s.value = append(*s.value, out...)
	}

	s.changed = true

	return nil
}

// Type returns a string that uniquely represents this flag's type.
func (s *ipSliceValue) Type() string {