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#!/usr/bin/env python
# SPDX-License-Identifier: AGPL-3.0-or-later
"""Fetch currencies from :origin:`searx/engines/wikidata.py` engine.
Output file: :origin:`searx/data/currencies.json` (:origin:`CI Update data ...
<.github/workflows/data-update.yml>`).
"""
# pylint: disable=invalid-name
import re
import unicodedata
import json
from searx.locales import LOCALE_NAMES, locales_initialize
from searx.engines import wikidata, set_loggers
from searx.data import data_dir
DATA_FILE = data_dir / 'currencies.json'
set_loggers(wikidata, 'wikidata')
locales_initialize()
# ORDER BY (with all the query fields) is important to keep a deterministic result order
# so multiple invocation of this script doesn't change currencies.json
SARQL_REQUEST = """
SELECT DISTINCT ?iso4217 ?unit ?unicode ?label ?alias WHERE {
?item wdt:P498 ?iso4217; rdfs:label ?label.
OPTIONAL { ?item skos:altLabel ?alias FILTER (LANG (?alias) = LANG(?label)). }
OPTIONAL { ?item wdt:P5061 ?unit. }
OPTIONAL { ?item wdt:P489 ?symbol.
?symbol wdt:P487 ?unicode. }
MINUS { ?item wdt:P582 ?end_data . } # Ignore monney with an end date
MINUS { ?item wdt:P31/wdt:P279* wd:Q15893266 . } # Ignore "former entity" (obsolete currency)
FILTER(LANG(?label) IN (%LANGUAGES_SPARQL%)).
}
ORDER BY ?iso4217 ?unit ?unicode ?label ?alias
"""
# ORDER BY (with all the query fields) is important to keep a deterministic result order
# so multiple invocation of this script doesn't change currencies.json
SPARQL_WIKIPEDIA_NAMES_REQUEST = """
SELECT DISTINCT ?iso4217 ?article_name WHERE {
?item wdt:P498 ?iso4217 .
?article schema:about ?item ;
schema:name ?article_name ;
schema:isPartOf [ wikibase:wikiGroup "wikipedia" ]
MINUS { ?item wdt:P582 ?end_data . } # Ignore monney with an end date
MINUS { ?item wdt:P31/wdt:P279* wd:Q15893266 . } # Ignore "former entity" (obsolete currency)
FILTER(LANG(?article_name) IN (%LANGUAGES_SPARQL%)).
}
ORDER BY ?iso4217 ?article_name
"""
LANGUAGES = LOCALE_NAMES.keys()
LANGUAGES_SPARQL = ', '.join(set(map(lambda l: repr(l.split('_')[0]), LANGUAGES)))
def remove_accents(name):
return unicodedata.normalize('NFKD', name).lower()
def remove_extra(name):
for c in ('(', ':'):
if c in name:
name = name.split(c)[0].strip()
return name
def _normalize_name(name):
name = re.sub(' +', ' ', remove_accents(name.lower()).replace('-', ' '))
name = remove_extra(name)
return name
def add_currency_name(db, name, iso4217, normalize_name=True):
db_names = db['names']
if normalize_name:
name = _normalize_name(name)
iso4217_set = db_names.setdefault(name, [])
if iso4217 not in iso4217_set:
iso4217_set.insert(0, iso4217)
def add_currency_label(db, label, iso4217, language):
labels = db['iso4217'].setdefault(iso4217, {})
labels[language] = label
def wikidata_request_result_iterator(request):
result = wikidata.send_wikidata_query(request.replace('%LANGUAGES_SPARQL%', LANGUAGES_SPARQL))
if result is not None:
yield from result['results']['bindings']
def fetch_db():
db = {
'names': {},
'iso4217': {},
}
for r in wikidata_request_result_iterator(SPARQL_WIKIPEDIA_NAMES_REQUEST):
iso4217 = r['iso4217']['value']
article_name = r['article_name']['value']
article_lang = r['article_name']['xml:lang']
add_currency_name(db, article_name, iso4217)
add_currency_label(db, article_name, iso4217, article_lang)
for r in wikidata_request_result_iterator(SARQL_REQUEST):
iso4217 = r['iso4217']['value']
if 'label' in r:
label = r['label']['value']
label_lang = r['label']['xml:lang']
add_currency_name(db, label, iso4217)
add_currency_label(db, label, iso4217, label_lang)
if 'alias' in r:
add_currency_name(db, r['alias']['value'], iso4217)
if 'unicode' in r:
add_currency_name(db, r['unicode']['value'], iso4217, normalize_name=False)
if 'unit' in r:
add_currency_name(db, r['unit']['value'], iso4217, normalize_name=False)
return db
def main():
db = fetch_db()
# static
add_currency_name(db, "euro", 'EUR')
add_currency_name(db, "euros", 'EUR')
add_currency_name(db, "dollar", 'USD')
add_currency_name(db, "dollars", 'USD')
add_currency_name(db, "peso", 'MXN')
add_currency_name(db, "pesos", 'MXN')
# reduce memory usage:
# replace lists with one item by the item. see
# searx.search.processors.online_currency.name_to_iso4217
for name in db['names']:
if len(db['names'][name]) == 1:
db['names'][name] = db['names'][name][0]
with DATA_FILE.open('w', encoding='utf8') as f:
json.dump(db, f, indent=4, sort_keys=True, ensure_ascii=False)
if __name__ == '__main__':
main()
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