Package dns :: Package rdtypes :: Package IN :: Module A
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Source Code for Module dns.rdtypes.IN.A

 1  # Copyright (C) 2003-2007, 2009-2011 Nominum, Inc. 
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15   
16  import dns.exception 
17  import dns.ipv4 
18  import dns.rdata 
19  import dns.tokenizer 
20  import dns.util 
21   
22 -class A(dns.rdata.Rdata):
23 """A record. 24 25 @ivar address: an IPv4 address 26 @type address: string (in the standard "dotted quad" format)""" 27 28 __slots__ = ['address'] 29
30 - def __init__(self, rdclass, rdtype, address):
31 super(A, self).__init__(rdclass, rdtype) 32 # check that it's OK 33 junk = dns.ipv4.inet_aton(address) 34 self.address = address
35
36 - def to_text(self, origin=None, relativize=True, **kw):
37 return self.address
38
39 - def from_text(cls, rdclass, rdtype, tok, origin = None, relativize = True):
40 address = tok.get_identifier() 41 tok.get_eol() 42 return cls(rdclass, rdtype, address)
43 44 from_text = classmethod(from_text) 45
46 - def to_wire(self, file, compress = None, origin = None):
47 file.write(dns.ipv4.inet_aton(self.address))
48
49 - def from_wire(cls, rdclass, rdtype, wire, current, rdlen, origin = None):
50 address = dns.ipv4.inet_ntoa(wire[current : current + rdlen]) 51 return cls(rdclass, rdtype, address)
52 53 from_wire = classmethod(from_wire) 54
55 - def _cmp(self, other):
56 sa = dns.ipv4.inet_aton(self.address) 57 oa = dns.ipv4.inet_aton(other.address) 58 return dns.util.cmp(sa, oa)
59