Function getExitCode

cmd/docker-trust/main.go:93–114

getExitCode returns the exit-code to use for the given error. If err is a [cli.StatusError] and has a StatusCode set, it uses the status-code from it, otherwise it returns "1" for any error.

(err error)

// If err is a [cli.StatusError] and has a StatusCode set, it uses the
// status-code from it, otherwise it returns "1" for any error.
func getExitCode(err error) int {
	if err == nil {
		return 0
	}

	var userTerminatedErr errCtxSignalTerminated
	if errors.As(err, &userTerminatedErr) {
		s, ok := userTerminatedErr.signal.(syscall.Signal)
		if !ok {
			return 1
		}
		return 128 + int(s)
	}

	var stErr cli.StatusError
	if errors.As(err, &stErr) && stErr.StatusCode != 0 { // FIXME(thaJeztah): StatusCode should never be used with a zero status-code. Check if we do this anywhere.
		return stErr.StatusCode
	}

	// No status-code provided; all errors should have a non-zero exit code.
	return 1
}