Function splitHostname

pkg/image/image.go:158–172

splitHostname splits a repository name to hostname and remotename string. If no valid hostname is found, the default hostname is used. Repository name needs to be already validated before.

(name string)

// If no valid hostname is found, the default hostname is used. Repository name
// needs to be already validated before.
func splitHostname(name string) (hostname, remoteName string) {
	i := strings.IndexRune(name, '/')
	if i == -1 || (!strings.ContainsAny(name[:i], ".:") && name[:i] != "localhost") {
		hostname, remoteName = DefaultHostname, name
	} else {
		hostname, remoteName = name[:i], name[i+1:]
	}
	if hostname == LegacyDefaultHostname {
		hostname = DefaultHostname
	}
	if hostname == DefaultHostname && !strings.ContainsRune(remoteName, '/') {
		remoteName = DefaultRepoPrefix + remoteName
	}
	return
}