126 lines
3.3 KiB
Python
126 lines
3.3 KiB
Python
#!/usr/bin/env python
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#
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# Copyright (C) 2009 Google Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Data model classes for parsing and generating XML for the Maps Data API."""
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__author__ = 'api.roman.public@google.com (Roman Nurik)'
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import re
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import atom.core
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import gdata.data
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MAP_ATOM_ID_PATTERN = re.compile('/maps/feeds/maps/'
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'(?P<user_id>\w+)/'
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'(?P<map_id>\w+)$')
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FEATURE_ATOM_ID_PATTERN = re.compile('/maps/feeds/features/'
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'(?P<user_id>\w+)/'
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'(?P<map_id>\w+)/'
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'(?P<feature_id>\w+)$')
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# The KML mime type
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KML_CONTENT_TYPE = 'application/vnd.google-earth.kml+xml'
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# The OGC KML 2.2 namespace
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KML_NAMESPACE = 'http://www.opengis.net/kml/2.2'
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class MapsDataEntry(gdata.data.GDEntry):
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"""Adds convenience methods inherited by all Maps Data entries."""
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def get_user_id(self):
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"""Extracts the user ID of this entry."""
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if self.id.text:
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match = self.__class__.atom_id_pattern.search(self.id.text)
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if match:
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return match.group('user_id')
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return None
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GetUserId = get_user_id
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def get_map_id(self):
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"""Extracts the map ID of this entry."""
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if self.id.text:
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match = self.__class__.atom_id_pattern.search(self.id.text)
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if match:
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return match.group('map_id')
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return None
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GetMapId = get_map_id
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class Map(MapsDataEntry):
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"""Represents a map which belongs to the user."""
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atom_id_pattern = MAP_ATOM_ID_PATTERN
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class MapFeed(gdata.data.GDFeed):
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"""Represents an atom feed of maps."""
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entry = [Map]
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class KmlContent(atom.data.Content):
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"""Represents an atom content element that encapsulates KML content."""
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def __init__(self, **kwargs):
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super(KmlContent, self).__init__(type=KML_CONTENT_TYPE, **kwargs)
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if 'kml' in kwargs:
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self.kml = kwargs['kml']
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def _get_kml(self):
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if self.children:
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return self.children[0]
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else:
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return ''
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def _set_kml(self, kml):
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if not kml:
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self.children = []
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return
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if type(kml) == str:
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kml = atom.core.parse(kml)
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if not kml.namespace:
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kml.namespace = KML_NAMESPACE
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self.children = [kml]
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kml = property(_get_kml, _set_kml)
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class Feature(MapsDataEntry):
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"""Represents a single feature in a map."""
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atom_id_pattern = FEATURE_ATOM_ID_PATTERN
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content = KmlContent
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def get_feature_id(self):
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"""Extracts the feature ID of this feature."""
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if self.id.text:
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match = self.__class__.atom_id_pattern.search(self.id.text)
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if match:
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return match.group('feature_id')
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return None
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GetFeatureId = get_feature_id
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class FeatureFeed(gdata.data.GDFeed):
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"""Represents an atom feed of features."""
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entry = [Feature]
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