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                                                                                                                                                                                     # Copyright (C) Dnspython Contributors, see LICENSE for text of ISC license

# Copyright (C) 2003-2007, 2009-2011 Nominum, Inc.
#
# Permission to use, copy, modify, and distribute this software and its
# documentation for any purpose with or without fee is hereby granted,
# provided that the above copyright notice and this permission notice
# appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND NOMINUM DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NOMINUM BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
# OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

import struct

import dns.immutable
import dns.rdtypes.mxbase


@dns.immutable.immutable
class A(dns.rdata.Rdata):
    """A record for Chaosnet"""

    # domain: the domain of the address
    # address: the 16-bit address

    __slots__ = ["domain", "address"]

    def __init__(self, rdclass, rdtype, domain, address):
        super().__init__(rdclass, rdtype)
        self.domain = self._as_name(domain)
        self.address = self._as_uint16(address)

    def to_text(self, origin=None, relativize=True, **kw):
        domain = self.domain.choose_relativity(origin, relativize)
        return f"{domain} {self.address:o}"

    @classmethod
    def from_text(
        cls, rdclass, rdtype, tok, origin=None, relativize=True, relativize_to=None
    ):
        domain = tok.get_name(origin, relativize, relativize_to)
        address = tok.get_uint16(base=8)
        return cls(rdclass, rdtype, domain, address)

    def _to_wire(self, file, compress=None, origin=None, canonicalize=False):
        self.domain.to_wire(file, compress, origin, canonicalize)
        pref = struct.pack("!H", self.address)
        file.write(pref)

    @classmethod
    def from_wire_parser(cls, rdclass, rdtype, parser, origin=None):
        domain = parser.get_name(origin)
        address = parser.get_uint16()
        return cls(rdclass, rdtype, domain, address)