mirror of
https://github.com/osm-search/Nominatim.git
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96 lines
3.9 KiB
Python
96 lines
3.9 KiB
Python
# SPDX-License-Identifier: GPL-3.0-or-later
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#
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# This file is part of Nominatim. (https://nominatim.org)
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#
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# Copyright (C) 2023 by the Nominatim developer community.
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# For a full list of authors see the git log.
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"""
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Implementation of the 'convert' subcommand.
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"""
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from typing import Set, Any, Union, Optional, Sequence
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import argparse
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import asyncio
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from pathlib import Path
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from nominatim.clicmd.args import NominatimArgs
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from nominatim.errors import UsageError
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# Do not repeat documentation of subcommand classes.
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# pylint: disable=C0111
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# Using non-top-level imports to avoid eventually unused imports.
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# pylint: disable=E0012,C0415
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class WithAction(argparse.Action):
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""" Special action that saves a list of flags, given on the command-line
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as `--with-foo` or `--without-foo`.
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"""
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def __init__(self, option_strings: Sequence[str], dest: Any,
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default: bool = True, **kwargs: Any) -> None:
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if 'nargs' in kwargs:
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raise ValueError("nargs not allowed.")
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if option_strings is None:
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raise ValueError("Positional parameter not allowed.")
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self.dest_set = kwargs.pop('dest_set')
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full_option_strings = []
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for opt in option_strings:
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if not opt.startswith('--'):
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raise ValueError("short-form options not allowed")
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if default:
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self.dest_set.add(opt[2:])
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full_option_strings.append(f"--with-{opt[2:]}")
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full_option_strings.append(f"--without-{opt[2:]}")
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super().__init__(full_option_strings, argparse.SUPPRESS, nargs=0, **kwargs)
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def __call__(self, parser: argparse.ArgumentParser, namespace: argparse.Namespace,
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values: Union[str, Sequence[Any], None],
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option_string: Optional[str] = None) -> None:
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assert option_string
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if option_string.startswith('--with-'):
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self.dest_set.add(option_string[7:])
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if option_string.startswith('--without-'):
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self.dest_set.discard(option_string[10:])
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class ConvertDB:
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""" Convert an existing database into a different format. (EXPERIMENTAL)
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Dump a read-only version of the database in a different format.
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At the moment only a SQLite database suitable for reverse lookup
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can be created.
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"""
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def __init__(self) -> None:
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self.options: Set[str] = set()
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def add_args(self, parser: argparse.ArgumentParser) -> None:
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parser.add_argument('--format', default='sqlite',
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choices=('sqlite', ),
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help='Format of the output database (must be sqlite currently)')
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parser.add_argument('--output', '-o', required=True, type=Path,
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help='File to write the database to.')
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group = parser.add_argument_group('Switches to define database layout'
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'(currently no effect)')
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group.add_argument('--reverse', action=WithAction, dest_set=self.options, default=True,
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help='Enable/disable support for reverse and lookup API'
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' (default: enabled)')
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group.add_argument('--search', action=WithAction, dest_set=self.options, default=True,
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help='Enable/disable support for search API (default: disabled)')
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group.add_argument('--details', action=WithAction, dest_set=self.options, default=True,
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help='Enable/disable support for details API (default: enabled)')
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def run(self, args: NominatimArgs) -> int:
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if args.output.exists():
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raise UsageError(f"File '{args.output}' already exists. Refusing to overwrite.")
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if args.format == 'sqlite':
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from ..tools import convert_sqlite
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asyncio.run(convert_sqlite.convert(args.project_dir, args.output, self.options))
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return 0
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return 1
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