sdk/platform-tools/systrace/catapult/telemetry/third_party/web-page-replay/third_party/dns/rdtypes/ANY/ISDN.py

   1 # Copyright (C) 2003-2007, 2009, 2010 Nominum, Inc.
   2 #
   3 # Permission to use, copy, modify, and distribute this software and its
   4 # documentation for any purpose with or without fee is hereby granted,
   5 # provided that the above copyright notice and this permission notice
   6 # appear in all copies.
   7 #
   8 # THE SOFTWARE IS PROVIDED "AS IS" AND NOMINUM DISCLAIMS ALL WARRANTIES
   9 # WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10 # MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NOMINUM BE LIABLE FOR
  11 # ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12 # WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13 # ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
  14 # OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  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]
  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]
  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