/usr/lib/python2.7/dist-packages/twext/who/util.py is in calendarserver 5.2+dfsg-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 | # -*- test-case-name: twext.who.test.test_util -*-
##
# Copyright (c) 2013-2014 Apple Inc. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
##
"""
Directory service module utilities.
"""
__all__ = [
"ConstantsContainer",
"uniqueResult",
"describe",
"iterFlags",
]
from twisted.python.constants import FlagConstant
from twext.who.idirectory import DirectoryServiceError
class ConstantsContainer(object):
"""
A container for constants.
"""
def __init__(self, constants):
myConstants = {}
for constant in constants:
if constant.name in myConstants:
raise ValueError("Name conflict: {0}".format(constant.name))
myConstants[constant.name] = constant
self._constants = myConstants
def __getattr__(self, name):
try:
return self._constants[name]
except KeyError:
raise AttributeError(name)
def iterconstants(self):
return self._constants.itervalues()
def lookupByName(self, name):
try:
return self._constants[name]
except KeyError:
raise ValueError(name)
def uniqueResult(values):
result = None
for value in values:
if result is None:
result = value
else:
raise DirectoryServiceError(
"Multiple values found where one expected."
)
return result
def describe(constant):
if isinstance(constant, FlagConstant):
parts = []
for flag in iterFlags(constant):
parts.append(getattr(flag, "description", flag.name))
return "|".join(parts)
else:
return getattr(constant, "description", constant.name)
def iterFlags(flags):
if hasattr(flags, "__iter__"):
return flags
else:
# Work around http://twistedmatrix.com/trac/ticket/6302
# FIXME: This depends on a private attribute (flags._container)
return (flags._container.lookupByName(name) for name in flags.names)
|