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| # Copyright 2010-2015 MongoDB, Inc. | |
| # | |
| # 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. | |
| """Timezone related utilities for BSON.""" | |
| from datetime import (timedelta, | |
| tzinfo) | |
| ZERO = timedelta(0) | |
| class FixedOffset(tzinfo): | |
| """Fixed offset timezone, in minutes east from UTC. | |
| Implementation based from the Python `standard library documentation | |
| <http://docs.python.org/library/datetime.html#tzinfo-objects>`_. | |
| Defining __getinitargs__ enables pickling / copying. | |
| """ | |
| def __init__(self, offset, name): | |
| if isinstance(offset, timedelta): | |
| self.__offset = offset | |
| else: | |
| self.__offset = timedelta(minutes=offset) | |
| self.__name = name | |
| def __getinitargs__(self): | |
| return self.__offset, self.__name | |
| def utcoffset(self, dt): | |
| return self.__offset | |
| def tzname(self, dt): | |
| return self.__name | |
| def dst(self, dt): | |
| return ZERO | |
| utc = FixedOffset(0, "UTC") | |
| """Fixed offset timezone representing UTC.""" | |