class Time
  # Returns a new Time created from the ISO date format String "YYYYMMDDhhmmss"
  def self.from_iso(t)
    return nil unless t

    if t.to_s =~ /^(\d{4})(\d{2})(\d{2})(\d{2})(\d{2})(\d{2})$/
      utc(Regexp.last_match(1).to_i, Regexp.last_match(2).to_i, Regexp.last_match(3).to_i, Regexp.last_match(4).to_i, Regexp.last_match(5).to_i, Regexp.last_match(6).to_i)
    else
      raise ArgumentError, "invalid iso time format: #{t}"
    end
  end

  # Returns the Time as ISO date format String "YYYYMMDDhhmmss"
  def to_iso
    getutc.strftime("%Y%m%d%H%M%S")
  end
end