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authorS. Solomon Darnell2025-03-28 21:52:21 -0500
committerS. Solomon Darnell2025-03-28 21:52:21 -0500
commit4a52a71956a8d46fcb7294ac71734504bb09bcc2 (patch)
treeee3dc5af3b6313e921cd920906356f5d4febc4ed /.venv/lib/python3.12/site-packages/dns/namedict.py
parentcc961e04ba734dd72309fb548a2f97d67d578813 (diff)
downloadgn-ai-master.tar.gz
two version of R2R are hereHEADmaster
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+# Copyright (C) Dnspython Contributors, see LICENSE for text of ISC license
+
+# Copyright (C) 2003-2017 Nominum, Inc.
+# Copyright (C) 2016 Coresec Systems AB
+#
+# 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.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND CORESEC SYSTEMS AB DISCLAIMS ALL
+# WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
+# WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL CORESEC
+# SYSTEMS AB 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.
+
+"""DNS name dictionary"""
+
+# pylint seems to be confused about this one!
+from collections.abc import MutableMapping # pylint: disable=no-name-in-module
+
+import dns.name
+
+
+class NameDict(MutableMapping):
+ """A dictionary whose keys are dns.name.Name objects.
+
+ In addition to being like a regular Python dictionary, this
+ dictionary can also get the deepest match for a given key.
+ """
+
+ __slots__ = ["max_depth", "max_depth_items", "__store"]
+
+ def __init__(self, *args, **kwargs):
+ super().__init__()
+ self.__store = dict()
+ #: the maximum depth of the keys that have ever been added
+ self.max_depth = 0
+ #: the number of items of maximum depth
+ self.max_depth_items = 0
+ self.update(dict(*args, **kwargs))
+
+ def __update_max_depth(self, key):
+ if len(key) == self.max_depth:
+ self.max_depth_items = self.max_depth_items + 1
+ elif len(key) > self.max_depth:
+ self.max_depth = len(key)
+ self.max_depth_items = 1
+
+ def __getitem__(self, key):
+ return self.__store[key]
+
+ def __setitem__(self, key, value):
+ if not isinstance(key, dns.name.Name):
+ raise ValueError("NameDict key must be a name")
+ self.__store[key] = value
+ self.__update_max_depth(key)
+
+ def __delitem__(self, key):
+ self.__store.pop(key)
+ if len(key) == self.max_depth:
+ self.max_depth_items = self.max_depth_items - 1
+ if self.max_depth_items == 0:
+ self.max_depth = 0
+ for k in self.__store:
+ self.__update_max_depth(k)
+
+ def __iter__(self):
+ return iter(self.__store)
+
+ def __len__(self):
+ return len(self.__store)
+
+ def has_key(self, key):
+ return key in self.__store
+
+ def get_deepest_match(self, name):
+ """Find the deepest match to *name* in the dictionary.
+
+ The deepest match is the longest name in the dictionary which is
+ a superdomain of *name*. Note that *superdomain* includes matching
+ *name* itself.
+
+ *name*, a ``dns.name.Name``, the name to find.
+
+ Returns a ``(key, value)`` where *key* is the deepest
+ ``dns.name.Name``, and *value* is the value associated with *key*.
+ """
+
+ depth = len(name)
+ if depth > self.max_depth:
+ depth = self.max_depth
+ for i in range(-depth, 0):
+ n = dns.name.Name(name[i:])
+ if n in self:
+ return (n, self[n])
+ v = self[dns.name.empty]
+ return (dns.name.empty, v)