mirror of
https://github.com/searxng/searxng
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46ca32c3cc
use a sparql request on wikidata to get the list of currencies. currencies.json contains the translation for all supported searx languages. Supersede #993
152 lines
4.7 KiB
Python
152 lines
4.7 KiB
Python
#!/usr/bin/env python
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import re
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import unicodedata
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import json
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# set path
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from sys import path
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from os.path import realpath, dirname, join
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path.append(realpath(dirname(realpath(__file__)) + '/../'))
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from searx import searx_dir, settings
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from searx.engines.wikidata import send_wikidata_query
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# ORDER BY (with all the query fields) is important to keep a deterministic result order
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# so multiple invokation of this script doesn't change currencies.json
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SARQL_REQUEST = """
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SELECT DISTINCT ?iso4217 ?unit ?unicode ?label ?alias WHERE {
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?item wdt:P498 ?iso4217; rdfs:label ?label.
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OPTIONAL { ?item skos:altLabel ?alias FILTER (LANG (?alias) = LANG(?label)). }
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OPTIONAL { ?item wdt:P5061 ?unit. }
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OPTIONAL { ?item wdt:P489 ?symbol.
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?symbol wdt:P487 ?unicode. }
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MINUS { ?item wdt:P582 ?end_data . } # Ignore monney with an end date
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MINUS { ?item wdt:P31/wdt:P279* wd:Q15893266 . } # Ignore "former entity" (obsolete currency)
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FILTER(LANG(?label) IN (%LANGUAGES_SPARQL%)).
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}
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ORDER BY ?iso4217 ?unit ?unicode ?label ?alias
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"""
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# ORDER BY (with all the query fields) is important to keep a deterministic result order
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# so multiple invokation of this script doesn't change currencies.json
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SPARQL_WIKIPEDIA_NAMES_REQUEST = """
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SELECT DISTINCT ?iso4217 ?article_name WHERE {
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?item wdt:P498 ?iso4217 .
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?article schema:about ?item ;
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schema:name ?article_name ;
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schema:isPartOf [ wikibase:wikiGroup "wikipedia" ]
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MINUS { ?item wdt:P582 ?end_data . } # Ignore monney with an end date
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MINUS { ?item wdt:P31/wdt:P279* wd:Q15893266 . } # Ignore "former entity" (obsolete currency)
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FILTER(LANG(?article_name) IN (%LANGUAGES_SPARQL%)).
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}
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ORDER BY ?iso4217 ?article_name
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"""
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LANGUAGES = settings['locales'].keys()
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LANGUAGES_SPARQL = ', '.join(set(map(lambda l: repr(l.split('_')[0]), LANGUAGES)))
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def remove_accents(name):
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return unicodedata.normalize('NFKD', name).lower()
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def remove_extra(name):
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for c in ('(', ':'):
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if c in name:
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name = name.split(c)[0].strip()
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return name
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def _normalize_name(name):
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name = re.sub(' +', ' ', remove_accents(name.lower()).replace('-', ' '))
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name = remove_extra(name)
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return name
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def add_currency_name(db, name, iso4217, normalize_name=True):
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db_names = db['names']
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if normalize_name:
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name = _normalize_name(name)
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iso4217_set = db_names.setdefault(name, [])
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if iso4217 not in iso4217_set:
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iso4217_set.insert(0, iso4217)
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def add_currency_label(db, label, iso4217, language):
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labels = db['iso4217'].setdefault(iso4217, {})
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labels[language] = label
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def wikidata_request_result_iterator(request):
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result = send_wikidata_query(request.replace('%LANGUAGES_SPARQL%', LANGUAGES_SPARQL))
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if result is not None:
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for r in result['results']['bindings']:
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yield r
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def fetch_db():
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db = {
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'names': {},
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'iso4217': {},
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}
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for r in wikidata_request_result_iterator(SPARQL_WIKIPEDIA_NAMES_REQUEST):
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iso4217 = r['iso4217']['value']
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article_name = r['article_name']['value']
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article_lang = r['article_name']['xml:lang']
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add_currency_name(db, article_name, iso4217)
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add_currency_label(db, article_name, iso4217, article_lang)
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for r in wikidata_request_result_iterator(SARQL_REQUEST):
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iso4217 = r['iso4217']['value']
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if 'label' in r:
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label = r['label']['value']
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label_lang = r['label']['xml:lang']
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add_currency_name(db, label, iso4217)
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add_currency_label(db, label, iso4217, label_lang)
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if 'alias' in r:
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add_currency_name(db, r['alias']['value'], iso4217)
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if 'unicode' in r:
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add_currency_name(db, r['unicode']['value'], iso4217, normalize_name=False)
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if 'unit' in r:
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add_currency_name(db, r['unit']['value'], iso4217, normalize_name=False)
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# reduce memory usage:
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# replace lists with one item by the item.
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# see searx.search.processors.online_currency.name_to_iso4217
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for name in db['names']:
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if len(db['names'][name]) == 1:
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db['names'][name] = db['names'][name][0]
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return db
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def get_filename():
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return join(join(searx_dir, "data"), "currencies.json")
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def main():
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#
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db = fetch_db()
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# static
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add_currency_name(db, "euro", 'EUR')
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add_currency_name(db, "euros", 'EUR')
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add_currency_name(db, "dollar", 'USD')
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add_currency_name(db, "dollars", 'USD')
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add_currency_name(db, "peso", 'MXN')
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add_currency_name(db, "pesos", 'MXN')
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with open(get_filename(), 'w', encoding='utf8') as f:
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json.dump(db, f, ensure_ascii=False, indent=4)
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if __name__ == '__main__':
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main()
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