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Viewing changes to modules/geopy/geocoders/yahoo.py

  • Committer: eliao
  • Date: 2010-08-01 09:56:45 UTC
  • Revision ID: eliao@ibm-l3bw307-20100801095645-gsq9wcmjan0o0tby
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modules/geopy/geocoders/yahoo.py
 
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import xml.dom.minidom
 
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from geopy import util
 
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from geopy import Point, Location
 
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from urllib import urlencode
 
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from urllib2 import urlopen, HTTPError
 
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from geopy.geocoders.base import Geocoder
 
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class Yahoo(Geocoder):
 
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    BASE_URL = "http://api.local.yahoo.com/MapsService/V1/geocode?%s"
 
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    def __init__(self, app_id, format_string='%s', output_format='xml'):
 
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        self.app_id = app_id
 
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        self.format_string = format_string
 
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        self.output_format = output_format.lower()
 
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    def geocode(self, string):
 
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        params = {'location': self.format_string % string,
 
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                  'output': self.output_format,
 
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                  'appid': self.app_id
 
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                 }
 
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        url = self.BASE_URL % urlencode(params)
 
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        return self.geocode_url(url)
 
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    def geocode_url(self, url):
 
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        print "Fetching %s..." % url
 
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        page = urlopen(url)
 
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        parse = getattr(self, 'parse_' + self.output_format)
 
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        return parse(page)
 
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    def parse_xml(self, page):
 
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        if not isinstance(page, basestring):
 
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            page = util.decode_page(page)
 
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        doc = xml.dom.minidom.parseString(page)
 
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        results = doc.getElementsByTagName('Result')
 
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        def parse_result(result):
 
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            strip = ", \n"
 
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            address = util.get_first_text(result, 'Address', strip)
 
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            city = util.get_first_text(result, 'City', strip)
 
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            state = util.get_first_text(result, 'State', strip)
 
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            zip = util.get_first_text(result, 'Zip', strip)
 
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            country = util.get_first_text(result, 'Country', strip)
 
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            city_state = util.join_filter(", ", [city, state])
 
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            place = util.join_filter(" ", [city_state, zip])
 
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            location = util.join_filter(", ", [address, place, country])
 
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            latitude = util.get_first_text(result, 'Latitude') or None
 
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            longitude = util.get_first_text(result, 'Longitude') or None
 
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            if latitude and longitude:
 
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                point = Point(latitude, longitude)
 
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            else:
 
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                point = Non
 
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            return Location(location, point, {
 
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                'Address': address,
 
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                'City': city,
 
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                'State': state,
 
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                'Zip': zip,
 
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                'Country': country
 
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            })
 
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        return [parse_result(result) for result in results]