meblog / appengine_django / serializer /

# Copyright 2009 Google 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
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# See the License for the specific language governing permissions and
# limitations under the License.

Replacement YAML dumper that can handle datetime.time objects.

import datetime
import yaml

    import decimal
except ImportError:
    from django.utils import _decimal as decimal # Python 2.3 fallback

class DjangoSafeDumper(yaml.SafeDumper):
  """Replacement DjangoSafeDumper that handles datetime.time objects.

  Serializes datetime.time objects to a YAML timestamp tag, there is a
  corresponding hack in to convert the datetime.datetime that the
  YAML decoder returns back to the expected datetime.time object.

  def represent_decimal(self, data):
    return self.represent_scalar(',2002:str', str(data))

  def represent_time(self, data):
    value = '1970-01-01 %s' % unicode(data.isoformat())
    return self.represent_scalar(',2002:timestamp', value)

DjangoSafeDumper.add_representer(decimal.Decimal, DjangoSafeDumper.represent_decimal)
DjangoSafeDumper.add_representer(datetime.time, DjangoSafeDumper.represent_time)
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