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143 lines
4.3 KiB
143 lines
4.3 KiB
import json
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import urllib.request, urllib.parse, urllib.error
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import urllib.request, urllib.error, urllib.parse
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import csv
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import codecs
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import io
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def csvByLine(csvFile, lineHandler):
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errors = ''
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for row_id, line in enumerate(UnicodeReader(csvFile)):
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print(("Calling Line handler for %s" % line))
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errors = ''.join([errors, lineHandler(line)])
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return errors
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def geolocate(location, sensor=False):
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"""
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Take a "location" and return its latitude and longitude
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Keyword arguments:
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location - String defining a geographical location (address, zip code, etc)
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sensor - Boolean defining whether the location was taken from
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an on-device sensor
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Output:
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latitude and logitude in an dict
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"""
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sensor = str(sensor).lower()
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url = "http://maps.googleapis.com/maps/api/geocode/json?"
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url += urllib.parse.urlencode({'address': location, 'sensor': sensor})
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data = urllib.request.urlopen(url).read()
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data = json.loads(data)
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if data and data['status'] == 'OK':
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return ({
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'latitude': data['results'][0]['geometry']['location']['lat'],
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'longitude': data['results'][0]['geometry']['location']['lng']
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})
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else:
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return None
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def georeverse(lat, lon):
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# construct url for reverse geocoding with google-maps
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url = "http://maps.googleapis.com/maps/api/geocode/json?"
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url += urllib.parse.urlencode({'latlng': lat + ',' + lon, 'sensor': 'false'})
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# retrieve and load google-map data
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data = urllib.request.urlopen(url).read()
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data = json.loads(data)
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# if request goes through, return the state and country of the location
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if data['status'] == 'OK':
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address_components = data['results'][0]['address_components']
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# these probably shouldn't be booleans (test with None data-type at some point)
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country = False
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state = False
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for component in address_components:
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try:
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if component['types'][0] == 'country':
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country = component['long_name']
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if component['types'][0] == 'administrative_area_level_1':
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state = component['long_name']
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except Exception:
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pass
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return ({
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'state': state,
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'country': country
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})
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return ({
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'state': False,
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'country': False
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})
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class UTF8Recoder:
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"""
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Iterator that reads an encoded stream and reencodes the input to UTF-8
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"""
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def __init__(self, f, encoding):
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self.reader = codecs.getreader(encoding)(f)
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def __iter__(self):
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return self
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def __next__(self):
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# return self.reader.next().decode("cp1252").encode("utf-8")
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return self.reader.next().encode("utf-8")
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class UnicodeReader:
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"""
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A CSV reader which will iterate over lines in the CSV file "f",
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which is encoded in the given encoding.
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"""
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# def __init__(self, f, dialect=csv.excel, encoding="utf-8", **kwds):
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def __init__(self, f, dialect=csv.excel, encoding="cp1252", **kwds):
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f = UTF8Recoder(f, encoding)
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self.reader = csv.reader(f, dialect=dialect, **kwds)
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def __next__(self):
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row = next(self.reader)
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return [str(s, "utf-8") for s in row]
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def __iter__(self):
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return self
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class UnicodeWriter:
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"""
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A CSV writer which will write rows to CSV file "f",
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which is encoded in the given encoding.
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"""
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def __init__(self, f, dialect=csv.excel, encoding="utf-8", **kwds):
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# Redirect output to a queue
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self.queue = io.StringIO()
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self.writer = csv.writer(self.queue, dialect=dialect, **kwds)
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self.stream = f
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self.encoder = codecs.getincrementalencoder(encoding)()
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def writerow(self, row):
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self.writer.writerow([s.encode("utf-8") for s in row])
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# Fetch UTF-8 output from the queue ...
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data = self.queue.getvalue()
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data = data.decode("utf-8")
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# ... and reencode it into the target encoding
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data = self.encoder.encode(data)
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# write to the target stream
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self.stream.write(data)
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# empty queue
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self.queue.truncate(0)
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def writerows(self, rows):
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for row in rows:
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self.writerow(row)
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