func main()

in container/go/cmd/digester/digester.go [38:70]

• 31 lines of code
• 10 McCabe index (conditional complexity)

func main() {
	flag.Var(&layers, "layer", "One or more layers with the following comma separated values (Compressed layer tarball, Uncompressed layer tarball, digest file, diff ID file). e.g., --layer layer.tar.gz,layer.tar,<file with digest>,<file with diffID>.")
	flag.Parse()

	if *dst == "" {
		log.Fatalln("Required option -dst was not specified.")
	}
	if *imgTarball == "" && *imgConfig == "" {
		log.Fatalln("Neither --tarball nor --config was specified.")
	}
	imgParts, err := compat.ImagePartsFromArgs(*imgConfig, *baseManifest, *imgTarball, layers)
	if err != nil {
		log.Fatalf("Unable to determine parts of the image from the specified arguments: %v", err)
	}
	img, err := compat.ReadImage(imgParts)
	if err != nil {
		log.Fatalf("Error reading image: %v", err)
	}
	if *format == "OCI" {
		img, err = oci.AsOCIImage(img)
		if err != nil {
			log.Fatalf("Failed to convert image to OCI format: %v", err)
		}
	}

	d, err := img.Digest()
	if err != nil {
		log.Fatalf("Unable to get digest of image: %v", err)
	}
	if err := ioutil.WriteFile(*dst, []byte(d.String()), os.ModePerm); err != nil {
		log.Fatalf("Error outputting digest file to %s: %v", *dst, err)
	}
}