exports.toString = function (type) {
  switch (type) {
    case 1: return 'A'
    case 10: return 'NULL'
    case 28: return 'AAAA'
    case 18: return 'AFSDB'
    case 42: return 'APL'
    case 257: return 'CAA'
    case 60: return 'CDNSKEY'
    case 59: return 'CDS'
    case 37: return 'CERT'
    case 5: return 'CNAME'
    case 49: return 'DHCID'
    case 32769: return 'DLV'
    case 39: return 'DNAME'
    case 48: return 'DNSKEY'
    case 43: return 'DS'
    case 55: return 'HIP'
    case 13: return 'HINFO'
    case 45: return 'IPSECKEY'
    case 25: return 'KEY'
    case 36: return 'KX'
    case 29: return 'LOC'
    case 15: return 'MX'
    case 35: return 'NAPTR'
    case 2: return 'NS'
    case 47: return 'NSEC'
    case 50: return 'NSEC3'
    case 51: return 'NSEC3PARAM'
    case 12: return 'PTR'
    case 46: return 'RRSIG'
    case 17: return 'RP'
    case 24: return 'SIG'
    case 6: return 'SOA'
    case 99: return 'SPF'
    case 33: return 'SRV'
    case 44: return 'SSHFP'
    case 32768: return 'TA'
    case 249: return 'TKEY'
    case 52: return 'TLSA'
    case 250: return 'TSIG'
    case 16: return 'TXT'
    case 252: return 'AXFR'
    case 251: return 'IXFR'
    case 41: return 'OPT'
    case 255: return 'ANY'
  }
  return 'UNKNOWN_' + type
}

exports.toType = function (name) {
  switch (name.toUpperCase()) {
    case 'A': return 1
    case 'NULL': return 10
    case 'AAAA': return 28
    case 'AFSDB': return 18
    case 'APL': return 42
    case 'CAA': return 257
    case 'CDNSKEY': return 60
    case 'CDS': return 59
    case 'CERT': return 37
    case 'CNAME': return 5
    case 'DHCID': return 49
    case 'DLV': return 32769
    case 'DNAME': return 39
    case 'DNSKEY': return 48
    case 'DS': return 43
    case 'HIP': return 55
    case 'HINFO': return 13
    case 'IPSECKEY': return 45
    case 'KEY': return 25
    case 'KX': return 36
    case 'LOC': return 29
    case 'MX': return 15
    case 'NAPTR': return 35
    case 'NS': return 2
    case 'NSEC': return 47
    case 'NSEC3': return 50
    case 'NSEC3PARAM': return 51
    case 'PTR': return 12
    case 'RRSIG': return 46
    case 'RP': return 17
    case 'SIG': return 24
    case 'SOA': return 6
    case 'SPF': return 99
    case 'SRV': return 33
    case 'SSHFP': return 44
    case 'TA': return 32768
    case 'TKEY': return 249
    case 'TLSA': return 52
    case 'TSIG': return 250
    case 'TXT': return 16
    case 'AXFR': return 252
    case 'IXFR': return 251
    case 'OPT': return 41
    case 'ANY': return 255
    case '*': return 255
  }
  return 0
}