Package dns :: Package rdtypes :: Package ANY :: Module ISDN
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Source Code for Module dns.rdtypes.ANY.ISDN

 1  # Copyright (C) 2003-2007, 2009-2011 Nominum, Inc. 
 2  # 
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15   
16  import dns.exception 
17  import dns.rdata 
18  import dns.tokenizer 
19   
20 -class ISDN(dns.rdata.Rdata):
21 """ISDN record 22 23 @ivar address: the ISDN address 24 @type address: string 25 @ivar subaddress: the ISDN subaddress (or '' if not present) 26 @type subaddress: string 27 @see: RFC 1183""" 28 29 __slots__ = ['address', 'subaddress'] 30
31 - def __init__(self, rdclass, rdtype, address, subaddress):
32 super(ISDN, self).__init__(rdclass, rdtype) 33 self.address = address 34 self.subaddress = subaddress
35
36 - def to_text(self, origin=None, relativize=True, **kw):
37 if self.subaddress: 38 return '"%s" "%s"' % (dns.rdata._escapify(self.address), 39 dns.rdata._escapify(self.subaddress)) 40 else: 41 return '"%s"' % dns.rdata._escapify(self.address)
42
43 - def from_text(cls, rdclass, rdtype, tok, origin = None, relativize = True):
44 address = tok.get_string() 45 t = tok.get() 46 if not t.is_eol_or_eof(): 47 tok.unget(t) 48 subaddress = tok.get_string() 49 else: 50 tok.unget(t) 51 subaddress = '' 52 tok.get_eol() 53 return cls(rdclass, rdtype, address, subaddress)
54 55 from_text = classmethod(from_text) 56
57 - def to_wire(self, file, compress = None, origin = None):
58 l = len(self.address) 59 assert l < 256 60 byte = chr(l) 61 file.write(byte) 62 file.write(self.address) 63 l = len(self.subaddress) 64 if l > 0: 65 assert l < 256 66 byte = chr(l) 67 file.write(byte) 68 file.write(self.subaddress)
69
70 - def from_wire(cls, rdclass, rdtype, wire, current, rdlen, origin = None):
71 l = ord(wire[current]) 72 current += 1 73 rdlen -= 1 74 if l > rdlen: 75 raise dns.exception.FormError 76 address = wire[current : current + l].unwrap() 77 current += l 78 rdlen -= l 79 if rdlen > 0: 80 l = ord(wire[current]) 81 current += 1 82 rdlen -= 1 83 if l != rdlen: 84 raise dns.exception.FormError 85 subaddress = wire[current : current + l].unwrap() 86 else: 87 subaddress = '' 88 return cls(rdclass, rdtype, address, subaddress)
89 90 from_wire = classmethod(from_wire) 91
92 - def _cmp(self, other):
93 v = cmp(self.address, other.address) 94 if v == 0: 95 v = cmp(self.subaddress, other.subaddress) 96 return v
97