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18 import struct
19
20 import dns.exception
21 import dns.rdata
22 import dns.tokenizer
23 from dns._compat import text_type
24
25
26 -class ISDN(dns.rdata.Rdata):
27
28 """ISDN record
29
30 @ivar address: the ISDN address
31 @type address: string
32 @ivar subaddress: the ISDN subaddress (or '' if not present)
33 @type subaddress: string
34 @see: RFC 1183"""
35
36 __slots__ = ['address', 'subaddress']
37
38 - def __init__(self, rdclass, rdtype, address, subaddress):
48
49 - def to_text(self, origin=None, relativize=True, **kw):
50 if self.subaddress:
51 return '"{}" "{}"'.format(dns.rdata._escapify(self.address),
52 dns.rdata._escapify(self.subaddress))
53 else:
54 return '"%s"' % dns.rdata._escapify(self.address)
55
56 @classmethod
57 - def from_text(cls, rdclass, rdtype, tok, origin=None, relativize=True):
58 address = tok.get_string()
59 t = tok.get()
60 if not t.is_eol_or_eof():
61 tok.unget(t)
62 subaddress = tok.get_string()
63 else:
64 tok.unget(t)
65 subaddress = ''
66 tok.get_eol()
67 return cls(rdclass, rdtype, address, subaddress)
68
69 - def to_wire(self, file, compress=None, origin=None):
70 l = len(self.address)
71 assert l < 256
72 file.write(struct.pack('!B', l))
73 file.write(self.address)
74 l = len(self.subaddress)
75 if l > 0:
76 assert l < 256
77 file.write(struct.pack('!B', l))
78 file.write(self.subaddress)
79
80 @classmethod
81 - def from_wire(cls, rdclass, rdtype, wire, current, rdlen, origin=None):
100