Remove third_party/twisted_8_1

third_party/twisted_8_1/twisted/names/hosts.py

-# Copyright (c) 2001-2004 Twisted Matrix Laboratories.
-# See LICENSE for details.
-
-
-from twisted.names import dns
-from twisted.persisted import styles
-from twisted.python import failure
-from twisted.internet import defer
-
-from twisted.names import common
-
-def searchFileFor(file, name):
-    try:
-        fp = open(file)
-    except:
-        return None
-
-    lines = fp.readlines()
-    for line in lines:
-        idx = line.find('#')
-        if idx != -1:
-            line = line[:idx]
-        if not line:
-            continue
-        parts = line.split()
-        if name.lower() in [s.lower() for s in parts[1:]]:
-            return parts[0]
-    return None
-
-
-
-class Resolver(common.ResolverBase, styles.Versioned):
-    """A resolver that services hosts(5) format files."""
-    #TODO: IPv6 support
-
-    persistenceVersion = 1
-
-    def upgradeToVersion1(self):
-        # <3 exarkun
-        self.typeToMethod = {}
-        for (k, v) in common.typeToMethod.items():
-            self.typeToMethod[k] = getattr(self, v)
-
-
-    def __init__(self, file='/etc/hosts', ttl = 60 * 60):
-        common.ResolverBase.__init__(self)
-        self.file = file
-        self.ttl = ttl
-
-
-    def lookupAddress(self, name, timeout = None):
-        res = searchFileFor(self.file, name)
-        if res:
-            return defer.succeed([
-                (dns.RRHeader(name, dns.A, dns.IN, self.ttl, dns.Record_A(res, self.ttl)),), (), ()
-            ])
-        return defer.fail(failure.Failure(dns.DomainError(name)))
-
-
-    # When we put IPv6 support in, this'll need a real impl
-    lookupAllRecords = lookupAddress