func parseVolume()

in pkg/transformer/utils.go [73:120]
34 lines of code
13 McCabe index (conditional complexity)

func parseVolume(volume string) (name, host, container, mode string, err error) {
	separator := ":"

	// Parse based on ":"
	volumeStrings := strings.Split(volume, separator)
	if len(volumeStrings) == 0 {
		return
	}

	// Set name if existed
	if !isPath(volumeStrings[0]) {
		name = volumeStrings[0]
		volumeStrings = volumeStrings[1:]
	}

	// Check if *anything* has been passed
	if len(volumeStrings) == 0 {
		err = fmt.Errorf("invalid volume format: %s", volume)
		return
	}

	// Get the last ":" passed which is presumingly the "access mode"
	possibleAccessMode := volumeStrings[len(volumeStrings)-1]

	// Check to see if :Z or :z exists. We do not support SELinux relabeling at the moment.
	// See https://github.com/kubernetes/kompose/issues/176
	// Otherwise, check to see if "rw" or "ro" has been passed
	if possibleAccessMode == "z" || possibleAccessMode == "Z" {
		log.Warnf("Volume mount \"%s\" will be mounted without labeling support. :z or :Z not supported", volume)
		mode = ""
		volumeStrings = volumeStrings[:len(volumeStrings)-1]
	} else if possibleAccessMode == "rw" || possibleAccessMode == "ro" {
		mode = possibleAccessMode
		volumeStrings = volumeStrings[:len(volumeStrings)-1]
	}

	// Check the volume format as well as host
	container = volumeStrings[len(volumeStrings)-1]
	volumeStrings = volumeStrings[:len(volumeStrings)-1]
	if len(volumeStrings) == 1 {
		host = volumeStrings[0]
	}
	if !isPath(container) || (len(host) > 0 && !isPath(host)) || len(volumeStrings) > 1 {
		err = fmt.Errorf("invalid volume format: %s", volume)
		return
	}
	return
}