Method Set

ipnet_slice.go:25–55

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

(val string)

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

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

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

	// parse ip values into slice
	out := make([]net.IPNet, 0, len(ipNetStrSlice))
	for _, ipNetStr := range ipNetStrSlice {
		_, n, err := net.ParseCIDR(strings.TrimSpace(ipNetStr))
		if err != nil {
			return fmt.Errorf("invalid string being converted to CIDR: %s", ipNetStr)
		}
		out = append(out, *n)
	}

	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 *ipNetSliceValue) Type() string {