Method Format

dgraph/cmd/cert/info.go:189–218

Format implements the fmt.Formatter interface, used by fmt functions to generate output using custom format specifiers. This function creates the format specifiers '%n', '%x', '%e' to extract name, expiration date, and error string from an Info object.

(f fmt.State, c rune)

// format specifiers '%n', '%x', '%e' to extract name, expiration date, and
// error string from an Info object.
func (i *certInfo) Format(f fmt.State, c rune) {
	w, wok := f.Width()     // width modifier. eg., %20n
	p, pok := f.Precision() // precision modifier. eg., %.20n

	var str string
	switch c {
	case 'n':
		str = i.commonName

	case 'x':
		if i.expireDate.IsZero() {
			break
		}
		str = i.expireDate.Format(time.RFC822)

	case 'e':
		if i.err != nil {
			str = i.err.Error()
		}
	}

	if wok {
		str = fmt.Sprintf("%-[2]*[1]s", str, w)
	}
	if pok && len(str) < p {
		str = str[:p]
	}

	x.Check2(f.Write([]byte(str)))
}