tar

type Tar interface {
	// CreateTarFile creates a tar file in the base directory
	// using the contents of dir directory
	// The name of the new tar file is returned if successful
	CreateTarFile(base, dir string) (string, error)

	// ExtractTarStream extracts files from a given tar stream.
	// Times out if reading from the stream for any given file
	// exceeds the value of timeout
	ExtractTarStream(dir string, reader io.Reader) error
}