inopinatus

module Uu58
  # Convert a string UUID to a base58 string representation.
  #
  # Output will be padded up to 22 digits if necessary.
  #
  # Behaviour is undefined if passing something other than a 128-bit
  # hex string in network order with optional interstitial hyphens.
  def self.uuid_to_base58(uuid, alphabet = SecureRandom::BASE58_ALPHABET)
    ary = uuid.delete("-").to_i(16).digits(58).reverse
    ary.unshift(0) while ary.length < 22