mirror of
https://github.com/osm-search/Nominatim.git
synced 2026-02-16 15:47:58 +00:00
83054af46f
The typing_extensions package is only necessary now when running mypy. It won't be used at runtime anymore.
120 lines
4.2 KiB
Python
120 lines
4.2 KiB
Python
# SPDX-License-Identifier: GPL-2.0-only
|
|
#
|
|
# This file is part of Nominatim. (https://nominatim.org)
|
|
#
|
|
# Copyright (C) 2022 by the Nominatim developer community.
|
|
# For a full list of authors see the git log.
|
|
"""
|
|
Common data types and protocols for sanitizers.
|
|
"""
|
|
from typing import Optional, Dict, List, Mapping, Callable
|
|
|
|
from nominatim.tokenizer.sanitizers.config import SanitizerConfig
|
|
from nominatim.data.place_info import PlaceInfo
|
|
from nominatim.typing import Protocol, Final
|
|
|
|
class PlaceName:
|
|
""" A searchable name for a place together with properties.
|
|
Every name object saves the name proper and two basic properties:
|
|
* 'kind' describes the name of the OSM key used without any suffixes
|
|
(i.e. the part after the colon removed)
|
|
* 'suffix' contains the suffix of the OSM tag, if any. The suffix
|
|
is the part of the key after the first colon.
|
|
In addition to that, the name may have arbitrary additional attributes.
|
|
Which attributes are used, depends on the token analyser.
|
|
"""
|
|
|
|
def __init__(self, name: str, kind: str, suffix: Optional[str]):
|
|
self.name = name
|
|
self.kind = kind
|
|
self.suffix = suffix
|
|
self.attr: Dict[str, str] = {}
|
|
|
|
|
|
def __repr__(self) -> str:
|
|
return f"PlaceName(name='{self.name}',kind='{self.kind}',suffix='{self.suffix}')"
|
|
|
|
|
|
def clone(self, name: Optional[str] = None,
|
|
kind: Optional[str] = None,
|
|
suffix: Optional[str] = None,
|
|
attr: Optional[Mapping[str, str]] = None) -> 'PlaceName':
|
|
""" Create a deep copy of the place name, optionally with the
|
|
given parameters replaced. In the attribute list only the given
|
|
keys are updated. The list is not replaced completely.
|
|
In particular, the function cannot to be used to remove an
|
|
attribute from a place name.
|
|
"""
|
|
newobj = PlaceName(name or self.name,
|
|
kind or self.kind,
|
|
suffix or self.suffix)
|
|
|
|
newobj.attr.update(self.attr)
|
|
if attr:
|
|
newobj.attr.update(attr)
|
|
|
|
return newobj
|
|
|
|
|
|
def set_attr(self, key: str, value: str) -> None:
|
|
""" Add the given property to the name. If the property was already
|
|
set, then the value is overwritten.
|
|
"""
|
|
self.attr[key] = value
|
|
|
|
|
|
def get_attr(self, key: str, default: Optional[str] = None) -> Optional[str]:
|
|
""" Return the given property or the value of 'default' if it
|
|
is not set.
|
|
"""
|
|
return self.attr.get(key, default)
|
|
|
|
|
|
def has_attr(self, key: str) -> bool:
|
|
""" Check if the given attribute is set.
|
|
"""
|
|
return key in self.attr
|
|
|
|
|
|
class ProcessInfo:
|
|
""" Container class for information handed into to handler functions.
|
|
The 'names' and 'address' members are mutable. A handler must change
|
|
them by either modifying the lists place or replacing the old content
|
|
with a new list.
|
|
"""
|
|
|
|
def __init__(self, place: PlaceInfo):
|
|
self.place: Final = place
|
|
self.names = self._convert_name_dict(place.name)
|
|
self.address = self._convert_name_dict(place.address)
|
|
|
|
|
|
@staticmethod
|
|
def _convert_name_dict(names: Optional[Mapping[str, str]]) -> List[PlaceName]:
|
|
""" Convert a dictionary of names into a list of PlaceNames.
|
|
The dictionary key is split into the primary part of the key
|
|
and the suffix (the part after an optional colon).
|
|
"""
|
|
out = []
|
|
|
|
if names:
|
|
for key, value in names.items():
|
|
parts = key.split(':', 1)
|
|
out.append(PlaceName(value.strip(),
|
|
parts[0].strip(),
|
|
parts[1].strip() if len(parts) > 1 else None))
|
|
|
|
return out
|
|
|
|
|
|
class SanitizerHandler(Protocol):
|
|
""" Protocol for sanitizer modules.
|
|
"""
|
|
|
|
def create(self, config: SanitizerConfig) -> Callable[[ProcessInfo], None]:
|
|
"""
|
|
A sanitizer must define a single function `create`. It takes the
|
|
dictionary with the configuration information for the sanitizer and
|
|
returns a function that transforms name and address.
|
|
"""
|