def run(arguments):
print('****************************')
print(' Start Get Wiki')
print('****************************')
print('\nArguments:')
for arg in sorted(arguments.keys()):
print(' - {:10} : {}'.format(arg, arguments[arg]))
print()
# Validate arguments
is_arguments_ok = True
if not arguments['term']:
logger.info(
'[INTERUPTION] No term has been given. Please add a search term using -t or --term. Use -h, --help for help.'
)
is_arguments_ok = False
if is_arguments_ok:
logger.info('Arguments are valid. Starting to scrap Wikipedia...')
wf = WikiFetcher(arguments['term'],
suggest=arguments['suggest'],
n_results=arguments['n_results'])
wf.fetch()
def __init__(self, query, geojson_path, place_claim="P19", data_path=None):
self.wf = WikiFetcher()
self.pr = PlaceResolver("places.json")
self.STEP = 50
self.DEBUG_DIR = "debug"
self.place_claim = place_claim
self.db = json.loads('{"entities": {} }')
self.place_info_cnt = 0
items = self.wf.get_items_from_query(query)
print("Fetched " + str(len(items)) + " from query...")
self.process_items(items)
self.write_geojson(geojson_path)
self.save_database(data_path, geojson_path)
self.pr.close_failed_places()
print("Written " + str(self.place_info_cnt) + " items with geoinformation to geojson file...")
print("(Equals " + str(round(100 * (self.place_info_cnt / len(items)), 2)) + "%)")
class GeoJSONWriter():
def __init__(self, query, geojson_path, place_claim="P19", data_path=None):
self.wf = WikiFetcher()
self.pr = PlaceResolver("places.json")
self.STEP = 50
self.DEBUG_DIR = "debug"
self.place_claim = place_claim
self.db = json.loads('{"entities": {} }')
self.place_info_cnt = 0
items = self.wf.get_items_from_query(query)
print("Fetched " + str(len(items)) + " from query...")
self.process_items(items)
self.write_geojson(geojson_path)
self.save_database(data_path, geojson_path)
self.pr.close_failed_places()
print("Written " + str(self.place_info_cnt) + " items with geoinformation to geojson file...")
print("(Equals " + str(round(100 * (self.place_info_cnt / len(items)), 2)) + "%)")
def save_database(self, data_path, geojson_path):
if (data_path == None):
data_path = geojson_path.replace(".geojson", "-data.json")
dir_path = os.path.dirname(data_path)
if (dir_path != ""):
if (os.path.exists(dir_path) == False):
os.makedirs(dir_path)
fh = open(data_path, "w+")
json.dump(self.db, fh)
fh.close()
def write_geojson(self, geojson_path):
geojson = json.loads("""{
"type": "FeatureCollection",
"crs": {
"type": "name",
"properties": { "name": "urn:ogc:def:crs:EPSG::4326" }
},
"features": []
}""")
for entity in self.db["entities"]:
# TODO: set properties to be written via cmd-line
#print(entity)
place_id = None
# check if 625 already in object itself (then use own wikidata-id)
# Problem: double processing of the same entity
if ("P625" in self.db["entities"][entity]["claims"]):
place_id = entity
place_info, exception = self.pr.get_place_info_from_json(self.db["entities"][entity])
feature = self.build_feature(entity, place_info["name"], [place_info["lon"], place_info["lat"]])
geojson["features"].append(feature)
self.place_info_cnt += 1
elif (self.place_claim in self.db["entities"][entity]["claims"]):
try:
place_id = self.db["entities"][entity]["claims"][self.place_claim][0]["mainsnak"]["datavalue"]["value"]["numeric-id"]
place_id = "Q" + str(place_id)
if (self.pr.has_place(place_id)):
if (self.pr.place_not_none(place_id)):
name = self.get_name(self.db["entities"][entity])
coords = self.pr.return_lon_lat(place_id)
feature = self.build_feature(entity, name, coords)
#feature["properties"]["name"] = self.get_name(self.db["entities"][entity])
#feature["geometry"]["coordinates"] = self.pr.return_lon_lat(place_id)
geojson["features"].append(feature)
self.place_info_cnt += 1
except Exception as e:
print("Exception processing entity: " + entity)
print(e)
fh = open(geojson_path, "w+")
json.dump(geojson, fh)
fh.close()
def build_feature(self, wikiid, name, coords):
feature = json.loads("""{
"properties": { },
"geometry": {
"type": "Point",
"coordinates": [null, null]
},
"type": "Feature"
}""")
feature["properties"]["wikiid"] = wikiid
feature["properties"]["name"] = name
feature["geometry"]["coordinates"] = coords
return feature
def get_name(self, entity):
if ("en" in entity["labels"]):
if ("value" in entity["labels"]["en"]):
return entity["labels"]["en"]["value"]
# No value for en, check for sitelinks
for link in entity["sitelinks"]:
if ("title" in entity["sitelinks"][link]):
if (entity["sitelinks"][link]["title"] != ""):
return entity["sitelinks"][link]["title"]
return ""
def process_items(self, items):
cnt = 0
length = len(items)
while (cnt < length):
print("Processing items " + str(cnt) + " to " + str(cnt + self.STEP))
curr_id_list = items[cnt:cnt+self.STEP]
curr_json = self.wf.get_json_for_id_list(curr_id_list)
for entity in curr_json["entities"]:
self.db["entities"][entity] = curr_json["entities"][entity]
if (self.place_claim in curr_json["entities"][entity]["claims"]):
try:
curr_place_id = "Q" + str(curr_json["entities"][entity]["claims"][self.place_claim][0]["mainsnak"]["datavalue"]["value"]["numeric-id"])
if (self.pr.has_place(curr_place_id) == False):
self.pr.append_id_to_resolver(curr_place_id)
except Exception as e:
print("Exception: ")
print(e)
cnt += self.STEP
self.pr.resolve_pending_ids()
class PlaceResolver():
def __init__(self, db_path):
self.wf = WikiFetcher()
self.db = self.init_database(db_path)
self.resolve_list = []
self.failed_places_no_point = open("failed_places.info", "w+") # holds list of non retrieval places
# (because refers to an object without an 625 Property (geolocation for a point))
def close_failed_places(self):
self.failed_places_no_point.close()
def append_id_to_resolver(self, place_id):
self.resolve_list.append(place_id)
def has_place(self, place_id):
if (place_id in self.db):
return True
else:
return False
def place_not_none(self, place_id):
try:
return self.db[place_id] != None
except:
return False
def return_lat_lon(self, place_id):
place_info = self.db[place_id]
return [place_info["lat"], place_info["lon"]]
def return_lon_lat(self, place_id):
place_info = self.db[place_id]
return [place_info["lon"], place_info["lat"]]
def resolve_pending_ids(self):
if (len(self.resolve_list) == 0):
return False
new_resolve_list = []
for item in self.resolve_list:
if (item not in self.db):
new_resolve_list.append(item)
#print(self.resolve_list)
json_resp = self.wf.get_json_for_id_list(new_resolve_list)
if ("entities" in json_resp):
for place in json_resp["entities"]:
if (place not in self.db):
#print("Resolving " + place + "...")
place_info, exception = self.get_place_info_from_json(json_resp["entities"][place])
self.db[place] = place_info
if (exception):
if (exception.args[0] == "P625"):
if place not in self.failed_places_no_point:
self.failed_places_no_point.write(place + "\n")
self.failed_places_no_point.flush()
def get_place_info_from_json(self, json):
try:
lat = json["claims"]["P625"][0]["mainsnak"]["datavalue"]["value"]["latitude"]
lon = json["claims"]["P625"][0]["mainsnak"]["datavalue"]["value"]["longitude"]
try:
name = json["labels"]["en"]["value"]
except:
try:
name = json["claims"]["P373"][0]["mainsnak"]["datavalue"]["value"]
except:
name = ""
return {
"lat": lat,
"lon": lon,
"name": name
}, None
except Exception as e:
#print(json_resp)
print(e)
return None, e
# Returns a json object with place-information
def init_database(self, db_path):
return json.loads("{}")
def save_database(self, db_path):
if (os.path.exists(os.path.dirname(db_path)) == False):
os.mkdir(os.path.dirname(db_path))
fh = open(db_path, "w+")
json.dump(self.db, fh)
fh.close()
print("Data was saved to " + db_path + "!")
def __init__(self, db_path):
self.wf = WikiFetcher()
self.db = self.init_database(db_path)
self.resolve_list = []
self.failed_places_no_point = open("failed_places.info", "w+") # holds list of non retrieval places
