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#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Copyright (C) 2017 Étienne Loks <etienne.loks_AT_peacefrogsDOTnet>
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# See the file COPYING for details.
import csv
import sys
from django.core.management.base import BaseCommand
from django.contrib.gis.geos import GEOSGeometry, Point
from django.db import transaction
from django.db.utils import DataError
from django.contrib.contenttypes.models import ContentType
from ishtar_common.models import Town, GeoVectorData, GeoDataType, GeoProviderType
town_content_type = ContentType.objects.get(app_label="ishtar_common", model="town")
data_type, __ = GeoDataType.objects.get_or_create(
txt_idx="town-limit", defaults={"label": "Limites commune"}
)
provider, __ = GeoProviderType.objects.get_or_create(
txt_idx="france-ign", defaults={"label": "IGN"}
)
class Command(BaseCommand):
help = 'Import GEOFLA csv'
def add_arguments(self, parser):
parser.add_argument('csv_file')
parser.add_argument(
'--year', type=int, default=2014, dest='year',
help='Default year to affect to the town')
parser.add_argument(
'--quiet', dest='quiet', action='store_true',
help='Quiet output')
parser.add_argument(
'--create-only', dest='create_only', action='store_true',
help='Create only missing geo')
parser.add_argument(
'--srid', type=int, default=2154, dest='srid',
help='SRID uses. Default: 2154.')
def get_town(self, num_insee, name, default_year):
q = Town.objects.filter(numero_insee=num_insee)
created = False
if q.count():
if q.filter(year=default_year).count():
town = q.filter(year=default_year).all()[0]
else:
town = q.order_by('-year').all()[0]
else:
created = True
town = Town(name=name,
numero_insee=num_insee)
return town, created
@transaction.atomic
def handle(self, *args, **options):
csv.field_size_limit(sys.maxsize)
csv_file = options['csv_file']
default_year = options['year']
srid = options['srid']
quiet = options['quiet']
create_only = options["create_only"]
if not quiet:
sys.stdout.write('* using year {} as a default\n'.format(
default_year))
sys.stdout.write('* Opening file {}\n'.format(csv_file))
nb_created, nb_changed, nb_error, nb_geo = 0, 0, 0, 0
with open(csv_file, 'rt') as csvfile:
header = csvfile.readline()
geom_colum = header.split(",")[0]
csvfile.seek(0)
reader = csv.DictReader(csvfile)
for idx, row in enumerate(reader):
if not quiet:
sys.stdout.write('Processing town %d.\r' % (idx + 1))
sys.stdout.flush()
num_insee = row['INSEE_COM']
if len(num_insee) < 5:
num_insee = '0' + num_insee
if 'NOM_COM_M' in row:
name = row['NOM_COM_M']
elif 'NOM_M' in row:
name = row['NOM_M']
elif 'NOM' in row:
name = row['NOM'].upper()
else:
name = row['NOM_COM'].upper()
town, created = self.get_town(num_insee, name, default_year)
if created:
nb_created += 1
else:
nb_changed += 1
if create_only and town.main_geodata:
continue
geom = row[geom_colum].upper()
if 'MULTI' not in geom:
geom = geom.replace('POLYGON', 'MULTIPOLYGON(') + ')'
limit = GEOSGeometry(geom, srid=srid)
if 'X_CENTROID' in row:
center = Point(
float(row['X_CENTROID']), float(row['Y_CENTROID']),
srid=srid)
else:
center = None
values = {}
values['center'] = None
if not town.year and default_year:
values['year'] = default_year
if 'SUPERFICIE' in row:
values['surface'] = row['SUPERFICIE']
else:
values['surface'] = None
for k in values:
setattr(town, k, values[k])
try:
with transaction.atomic():
town.save()
except DataError:
nb_error += 1
town, created = self.get_town(num_insee, name, default_year)
for k in values:
setattr(town, k, values[k])
town.save()
attrs = {
"name": town._generate_cached_label(),
"source_content_type": town_content_type,
"source_id": town.pk,
"data_type": data_type,
"provider": provider,
}
if limit:
attrs["multi_polygon"] = limit
else:
attrs["point_2d"] = center
try:
data, created = GeoVectorData.objects.get_or_create(**attrs)
except DataError:
if limit:
print(f"\nError {town} polygon\n")
attrs.pop("multi_polygon")
attrs["point_2d"] = center
data, created = GeoVectorData.objects.get_or_create(**attrs)
else:
print(f"\nError {town} center\n")
town.main_geodata = data
town._post_save_geo_ok = False
town.save()
if created:
nb_geo += 1
if quiet:
return
sys.stdout.write('\n* {} town created'.format(nb_created))
sys.stdout.write('\n* {} geo created'.format(nb_geo))
sys.stdout.write('\n* {} town changed'.format(nb_changed))
sys.stdout.write('\n* {} town with geometry error\n'.format(nb_error))
sys.stdout.flush()
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