forked from hans/Nominatim
59 lines
1.6 KiB
Python
59 lines
1.6 KiB
Python
# SPDX-License-Identifier: GPL-2.0-only
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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) 2022 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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Sanitizer that cleans and normalizes housenumbers.
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Arguments:
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delimiters: Define the set of characters to be used for
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splitting a list of housenumbers into parts. (default: ',;')
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"""
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from nominatim.tokenizer.sanitizers.helpers import create_split_regex
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class _HousenumberSanitizer:
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def __init__(self, config):
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self.kinds = config.get('filter-kind', ('housenumber', ))
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self.split_regexp = create_split_regex(config)
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def __call__(self, obj):
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if not obj.address:
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return
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new_address = []
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for item in obj.address:
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if item.kind in self.kinds:
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new_address.extend(item.clone(kind='housenumber', name=n) for n in self.sanitize(item.name))
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else:
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# Don't touch other address items.
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new_address.append(item)
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obj.address = new_address
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def sanitize(self, value):
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""" Extract housenumbers in a regularized format from an OSM value.
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The function works as a generator that yields all valid housenumbers
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that can be created from the value.
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"""
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for hnr in self.split_regexp.split(value):
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if hnr:
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yield from self._regularize(hnr)
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def _regularize(self, hnr):
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yield hnr
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def create(config):
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""" Create a housenumber processing function.
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"""
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return _HousenumberSanitizer(config)
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