79 lines
2.8 KiB
Python
79 lines
2.8 KiB
Python
import os
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import six
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import yaml
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from geodata.address_formatting.formatter import AddressFormatter
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this_dir = os.path.realpath(os.path.dirname(__file__))
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OSM_BOUNDARIES_DIR = os.path.join(this_dir, os.pardir, os.pardir, os.pardir,
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'resources', 'boundaries', 'osm')
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class OSMAddressComponents(object):
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'''
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Keeps a map of OSM keys and values to the standard components
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of an address like city, state, etc. used for address formatting.
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When we reverse geocode a point, it will fall into a number of
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polygons, and we simply need to assign the names of said polygons
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to an address field.
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'''
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ADMIN_LEVEL = 'admin_level'
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# These keys are country-independent
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global_keys = {
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'place': {
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'country': AddressFormatter.COUNTRY,
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'state': AddressFormatter.STATE,
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'region': AddressFormatter.STATE,
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'province': AddressFormatter.STATE,
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'county': AddressFormatter.STATE_DISTRICT,
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'island': AddressFormatter.ISLAND,
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'islet': AddressFormatter.ISLAND,
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'municipality': AddressFormatter.CITY,
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'city': AddressFormatter.CITY,
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'town': AddressFormatter.CITY,
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'township': AddressFormatter.CITY,
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'village': AddressFormatter.CITY,
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'hamlet': AddressFormatter.CITY,
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'borough': AddressFormatter.CITY_DISTRICT,
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'suburb': AddressFormatter.SUBURB,
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'quarter': AddressFormatter.SUBURB,
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'neighbourhood': AddressFormatter.SUBURB
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}
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}
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def __init__(self, boundaries_dir=OSM_BOUNDARIES_DIR):
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self.config = {}
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for filename in os.listdir(boundaries_dir):
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if not filename.endswith('.yaml'):
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continue
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country_code = filename.rsplit('.yaml', 1)[0]
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data = yaml.load(open(os.path.join(boundaries_dir, filename)))
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for prop, values in six.iteritems(data):
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for k, v in values.iteritems():
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if v not in AddressFormatter.address_formatter_fields:
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raise ValueError(u'Invalid value in {} for prop={}, key={}: {}'.format(filename, prop, k, v))
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self.config[country_code] = data
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def get_component(self, country, prop, value):
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if prop in self.global_keys:
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props = self.global_keys[prop]
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else:
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props = self.config.get(country, {}).get(prop, {})
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return props.get(value, None)
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def get_first_component(self, country, properties):
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for k, v in six.iteritems(props):
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containing_component = self.get_component(country, k, v)
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break
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else:
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containing_component = None
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return containing_component
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osm_address_components = OSMAddressComponents()
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