Function normalize

index.js:459–477

* Takes a MAC address in various formats: * * - 00:00:00:00:00:00, * - 00-00-00-00-00-00, * - 0000.0000.0000 * * ... and returns it in the format 00:00:00:00:00:00. * * @param {string} mac * @return {string}

(mac)

 * @return {string}
 */
function normalize (mac) {
  let m = CISCO_MAC_ADDRESS_RE.exec(mac)
  if (m) {
    const halfwords = m.slice(1)
    mac = halfwords.map((halfword) => {
      return zeroFill(4, halfword)
    }).join('')
    return chunk(mac, 2).join(':').toUpperCase()
  }

  m = MAC_ADDRESS_RE.exec(mac)
  if (m) {
    const bytes = m.slice(1)
    return bytes
      .map(byte => zeroFill(2, byte))
      .join(':')
      .toUpperCase()
  }
}

function chunk (str, n) {
  const arr = []