Ported functions for the import of special phrases from php to python.

- the command is now --import-special-phrases
- the output is not an sql file anymore, data are directly imported to the database.
- the little part on the documentation (section data import) has been modified.

nominatim/clicmd/__init__.py

@@ -10,3 +10,4 @@ from .refresh import UpdateRefresh
 from .admin import AdminFuncs
 from .freeze import SetupFreeze
 from .transition import AdminTransition
+from .special_phrases import ImportSpecialPhrases

nominatim/clicmd/special_phrases.py

@@ -0,0 +1,29 @@
+"""
+    Implementation of the 'import-special-phrases' command.
+"""
+import logging
+from nominatim.tools.special_phrases import import_from_wiki
+from nominatim.db.connection import connect
+
+LOG = logging.getLogger()
+
+# Do not repeat documentation of subcommand classes.
+# pylint: disable=C0111
+
+class ImportSpecialPhrases:
+    """\
+    Import special phrases.
+    """
+    @staticmethod
+    def add_args(parser):
+        group = parser.add_argument_group('Input arguments')
+        group.add_argument('--from-wiki', action='store_true',
+                           help='Import special phrases from the OSM wiki to the database.')
+
+    @staticmethod
+    def run(args):
+        if args.from_wiki:
+            LOG.warning('Special phrases importation starting')
+            with connect(args.config.get_libpq_dsn()) as db_connection:
+                import_from_wiki(args.config, db_connection)
+        return 0