Function HelperForErrorf

internal/rfmt/helpers.go:162–170

HelperForErrorf is a helper to implement a redaction-aware fmt.Errorf-compatible function in a different package. It formats the string according to the given format and arguments in the same way as Sprintf, but in addition to this if the format contains %w and an error object in the proper argument

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

// Note: This function only works if an error redaction function
// has been injected with RegisterRedactErrorFn().
func HelperForErrorf(format string, args ...interface{}) (m.RedactableString, error) {
	p := newPrinter()
	p.wrapErrs = true
	p.doPrintf(format, args)
	e := p.wrappedErr
	s := p.buf.TakeRedactableString()
	p.free()
	return s, e
}

// EscapeBytes escapes markers inside the given byte slice and encloses
// the entire byte slice between redaction markers.