kopia lustrzana https://github.com/openmaptiles/openmaptiles
153 wiersze
5.0 KiB
Python
Executable File
153 wiersze
5.0 KiB
Python
Executable File
#!/usr/bin/env python
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"""
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Usage:
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omtgen tm2source <tileset> [--host=<host>] [--port=<port>] [--database=<dbname>] [--user=<user>] [--password=<pw>]
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omtgen imposm3 <tileset>
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omtgen dump-sql <tileset>
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omtgen --help
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omtgen --version
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Options:
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--help Show this screen.
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--version Show version.
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--host=<host> PostGIS host.
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--port=<port> PostGIS port.
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--database=<dbname> PostGIS database name.
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--user=<user> PostGIS user.
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--password=<pw> PostGIS password.
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"""
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import os
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import sys
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import yaml
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import collections
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from docopt import docopt
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DbParams = collections.namedtuple('DbParams', ['dbname', 'host', 'port',
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'password', 'user'])
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def generate_layer(layer_def, layer_defaults, db_params):
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layer = layer_def['layer']
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datasource = layer['datasource']
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tm2layer = {
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'id': layer['id'],
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'srs': layer.get('srs', layer_defaults['srs']),
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'properties': {
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'buffer-size': layer['buffer_size']
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},
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'Datasource': {
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'extent': [-20037508.34, -20037508.34, 20037508.34, 20037508.34],
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'geometry_field': datasource.get('geometry_field', 'geom'),
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'key_field': datasource.get('key_field', ''),
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'key_field_as_attribute': datasource.get('key_field_as_attribute', ''),
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'max_size': datasource.get('max_size', 512),
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'port': db_params.port,
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'srid': datasource.get('srid', layer_defaults['datasource']['srid']),
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'table': datasource['query'],
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'type': 'postgis',
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'host': db_params.host,
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'dbname': db_params.dbname,
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'user': db_params.user,
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'password': db_params.password,
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}
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}
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return tm2layer
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def parse_tileset(filename):
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return parse_file(filename)['tileset']
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def collect_sql(tileset_filename):
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tileset = parse_tileset(tileset_filename)
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sql = ''
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for layer_filename in tileset['layers']:
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with open(layer_filename, 'r') as stream:
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try:
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layer_def = yaml.load(stream)
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for sql_filename in layer_def['schema']:
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with open(os.path.join(os.path.dirname(layer_filename), sql_filename), 'r') as stream:
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sql += stream.read()
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except yaml.YAMLError as e:
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print('Could not parse ' + layer_filename)
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print(e)
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sys.exit(403)
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return sql
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def parse_file(filename):
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with open(filename, 'r') as stream:
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try:
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return yaml.load(stream)
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except yaml.YAMLError as e:
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print('Could not parse ' + filename)
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print(e)
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sys.exit(403)
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def create_imposm3_mapping(tileset_filename):
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tileset = parse_tileset(tileset_filename)
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generalized_tables = {}
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tables = {}
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for layer_filename in tileset['layers']:
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layer_def = parse_file(layer_filename)
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for data_source in layer_def.get('datasources', []):
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if data_source['type'] != 'imposm3':
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continue
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mapping_path = os.path.join(os.path.dirname(layer_filename),
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data_source['mapping_file'])
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mapping = parse_file(mapping_path)
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for table_name, definition in mapping.get('generalized_tables', {}).items():
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generalized_tables[table_name] = definition
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for table_name, definition in mapping.get('tables', {}).items():
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tables[table_name] = definition
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return {
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'generalized_tables': generalized_tables,
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'tables': tables,
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}
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def generate_tm2source(tileset_filename, db_params):
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tileset = parse_tileset(tileset_filename)
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layer_defaults = tileset['defaults']
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tm2 = {
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'attribution': tileset['attribution'],
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'center': tileset['center'],
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'description': tileset['description'],
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'maxzoom': tileset['maxzoom'],
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'minzoom': tileset['minzoom'],
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'name': tileset['name'],
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'Layer': [],
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}
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for layer_filename in tileset['layers']:
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with open(layer_filename, 'r') as stream:
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try:
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layer_def = yaml.load(stream)
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tm2layer = generate_layer(layer_def, layer_defaults, db_params)
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tm2['Layer'].append(tm2layer)
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except yaml.YAMLError as e:
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print('Could not parse ' + layer_filename)
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print(e)
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sys.exit(403)
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return tm2
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if __name__ == '__main__':
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args = docopt(__doc__, version=0.1)
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if args.get('tm2source'):
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db_params = DbParams(
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dbname=args['--database'],
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port=int(args['--port']),
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user=args['--user'],
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password=args['--password'],
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host=args['--host']
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)
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tm2 = generate_tm2source(args['<tileset>'], db_params)
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print(yaml.dump(tm2))
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if args.get('dump-sql'):
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sql = collect_sql(args['<tileset>'])
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print(sql)
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if args.get('imposm3'):
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mapping = create_imposm3_mapping(args['<tileset>'])
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print(yaml.dump(mapping))
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