mirror of
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move meta information from comment to the about variable so the preferences, the documentation can show these information
695 lines
25 KiB
Python
695 lines
25 KiB
Python
# SPDX-License-Identifier: AGPL-3.0-or-later
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"""
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Wikidata
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"""
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from urllib.parse import urlencode
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from json import loads
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from dateutil.parser import isoparse
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from babel.dates import format_datetime, format_date, format_time, get_datetime_format
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from searx import logger
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from searx.data import WIKIDATA_UNITS
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from searx.poolrequests import post, get
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from searx.utils import match_language, searx_useragent, get_string_replaces_function
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from searx.external_urls import get_external_url, get_earth_coordinates_url, area_to_osm_zoom
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from searx.engines.wikipedia import _fetch_supported_languages, supported_languages_url # NOQA # pylint: disable=unused-import
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logger = logger.getChild('wikidata')
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# about
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about = {
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"website": 'https://wikidata.org/',
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"wikidata_id": 'Q2013',
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"official_api_documentation": 'https://query.wikidata.org/',
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"use_official_api": True,
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"require_api_key": False,
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"results": 'JSON',
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}
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# SPARQL
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SPARQL_ENDPOINT_URL = 'https://query.wikidata.org/sparql'
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SPARQL_EXPLAIN_URL = 'https://query.wikidata.org/bigdata/namespace/wdq/sparql?explain'
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WIKIDATA_PROPERTIES = {
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'P434': 'MusicBrainz',
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'P435': 'MusicBrainz',
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'P436': 'MusicBrainz',
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'P966': 'MusicBrainz',
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'P345': 'IMDb',
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'P2397': 'YouTube',
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'P1651': 'YouTube',
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'P2002': 'Twitter',
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'P2013': 'Facebook',
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'P2003': 'Instagram',
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}
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# SERVICE wikibase:mwapi : https://www.mediawiki.org/wiki/Wikidata_Query_Service/User_Manual/MWAPI
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# SERVICE wikibase:label: https://en.wikibooks.org/wiki/SPARQL/SERVICE_-_Label#Manual_Label_SERVICE
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# https://en.wikibooks.org/wiki/SPARQL/WIKIDATA_Precision,_Units_and_Coordinates
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# https://www.mediawiki.org/wiki/Wikibase/Indexing/RDF_Dump_Format#Data_model
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# optmization:
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# * https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/query_optimization
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# * https://github.com/blazegraph/database/wiki/QueryHints
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QUERY_TEMPLATE = """
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SELECT ?item ?itemLabel ?itemDescription ?lat ?long %SELECT%
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WHERE
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{
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SERVICE wikibase:mwapi {
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bd:serviceParam wikibase:endpoint "www.wikidata.org";
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wikibase:api "EntitySearch";
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wikibase:limit 1;
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mwapi:search "%QUERY%";
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mwapi:language "%LANGUAGE%".
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?item wikibase:apiOutputItem mwapi:item.
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}
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%WHERE%
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SERVICE wikibase:label {
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bd:serviceParam wikibase:language "%LANGUAGE%,en".
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?item rdfs:label ?itemLabel .
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?item schema:description ?itemDescription .
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%WIKIBASE_LABELS%
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}
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}
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GROUP BY ?item ?itemLabel ?itemDescription ?lat ?long %GROUP_BY%
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"""
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# Get the calendar names and the property names
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QUERY_PROPERTY_NAMES = """
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SELECT ?item ?name
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WHERE {
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{
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SELECT ?item
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WHERE { ?item wdt:P279* wd:Q12132 }
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} UNION {
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VALUES ?item { %ATTRIBUTES% }
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}
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OPTIONAL { ?item rdfs:label ?name. }
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}
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"""
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# https://www.w3.org/TR/sparql11-query/#rSTRING_LITERAL1
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# https://lists.w3.org/Archives/Public/public-rdf-dawg/2011OctDec/0175.html
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sparql_string_escape = get_string_replaces_function({'\t': '\\\t',
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'\n': '\\\n',
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'\r': '\\\r',
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'\b': '\\\b',
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'\f': '\\\f',
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'\"': '\\\"',
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'\'': '\\\'',
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'\\': '\\\\'})
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replace_http_by_https = get_string_replaces_function({'http:': 'https:'})
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def get_headers():
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# user agent: https://www.mediawiki.org/wiki/Wikidata_Query_Service/User_Manual#Query_limits
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return {
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'Accept': 'application/sparql-results+json',
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'User-Agent': searx_useragent()
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}
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def get_label_for_entity(entity_id, language):
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name = WIKIDATA_PROPERTIES.get(entity_id)
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if name is None:
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name = WIKIDATA_PROPERTIES.get((entity_id, language))
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if name is None:
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name = WIKIDATA_PROPERTIES.get((entity_id, language.split('-')[0]))
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if name is None:
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name = WIKIDATA_PROPERTIES.get((entity_id, 'en'))
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if name is None:
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name = entity_id
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return name
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def send_wikidata_query(query, method='GET'):
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if method == 'GET':
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# query will be cached by wikidata
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http_response = get(SPARQL_ENDPOINT_URL + '?' + urlencode({'query': query}), headers=get_headers())
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else:
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# query won't be cached by wikidata
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http_response = post(SPARQL_ENDPOINT_URL, data={'query': query}, headers=get_headers())
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if http_response.status_code != 200:
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logger.debug('SPARQL endpoint error %s', http_response.content.decode())
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logger.debug('request time %s', str(http_response.elapsed))
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http_response.raise_for_status()
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return loads(http_response.content.decode())
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def request(query, params):
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language = params['language'].split('-')[0]
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if language == 'all':
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language = 'en'
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else:
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language = match_language(params['language'], supported_languages, language_aliases).split('-')[0]
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query, attributes = get_query(query, language)
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params['method'] = 'POST'
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params['url'] = SPARQL_ENDPOINT_URL
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params['data'] = {'query': query}
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params['headers'] = get_headers()
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params['language'] = language
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params['attributes'] = attributes
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return params
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def response(resp):
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results = []
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jsonresponse = loads(resp.content.decode())
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language = resp.search_params['language'].lower()
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attributes = resp.search_params['attributes']
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seen_entities = set()
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for result in jsonresponse.get('results', {}).get('bindings', []):
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attribute_result = {key: value['value'] for key, value in result.items()}
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entity_url = attribute_result['item']
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if entity_url not in seen_entities:
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seen_entities.add(entity_url)
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results += get_results(attribute_result, attributes, language)
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else:
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logger.debug('The SPARQL request returns duplicate entities: %s', str(attribute_result))
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return results
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def get_results(attribute_result, attributes, language):
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results = []
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infobox_title = attribute_result.get('itemLabel')
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infobox_id = attribute_result['item']
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infobox_id_lang = None
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infobox_urls = []
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infobox_attributes = []
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infobox_content = attribute_result.get('itemDescription', [])
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img_src = None
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img_src_priority = 100
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for attribute in attributes:
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value = attribute.get_str(attribute_result, language)
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if value is not None and value != '':
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attribute_type = type(attribute)
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if attribute_type in (WDURLAttribute, WDArticle):
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# get_select() method : there is group_concat(distinct ...;separator=", ")
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# split the value here
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for url in value.split(', '):
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infobox_urls.append({'title': attribute.get_label(language), 'url': url, **attribute.kwargs})
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# "normal" results (not infobox) include official website and Wikipedia links.
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if attribute.kwargs.get('official') or attribute_type == WDArticle:
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results.append({'title': infobox_title, 'url': url})
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# update the infobox_id with the wikipedia URL
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# first the local wikipedia URL, and as fallback the english wikipedia URL
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if attribute_type == WDArticle\
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and ((attribute.language == 'en' and infobox_id_lang is None)
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or attribute.language != 'en'):
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infobox_id_lang = attribute.language
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infobox_id = url
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elif attribute_type == WDImageAttribute:
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# this attribute is an image.
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# replace the current image only the priority is lower
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# (the infobox contain only one image).
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if attribute.priority < img_src_priority:
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img_src = value
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img_src_priority = attribute.priority
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elif attribute_type == WDGeoAttribute:
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# geocoordinate link
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# use the area to get the OSM zoom
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# Note: ignre the unit (must be km² otherwise the calculation is wrong)
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# Should use normalized value p:P2046/psn:P2046/wikibase:quantityAmount
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area = attribute_result.get('P2046')
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osm_zoom = area_to_osm_zoom(area) if area else 19
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url = attribute.get_geo_url(attribute_result, osm_zoom=osm_zoom)
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if url:
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infobox_urls.append({'title': attribute.get_label(language),
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'url': url,
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'entity': attribute.name})
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else:
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infobox_attributes.append({'label': attribute.get_label(language),
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'value': value,
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'entity': attribute.name})
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if infobox_id:
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infobox_id = replace_http_by_https(infobox_id)
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# add the wikidata URL at the end
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infobox_urls.append({'title': 'Wikidata', 'url': attribute_result['item']})
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if img_src is None and len(infobox_attributes) == 0 and len(infobox_urls) == 1 and\
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len(infobox_content) == 0:
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results.append({
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'url': infobox_urls[0]['url'],
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'title': infobox_title,
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'content': infobox_content
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})
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else:
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results.append({
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'infobox': infobox_title,
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'id': infobox_id,
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'content': infobox_content,
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'img_src': img_src,
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'urls': infobox_urls,
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'attributes': infobox_attributes
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})
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return results
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def get_query(query, language):
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attributes = get_attributes(language)
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select = [a.get_select() for a in attributes]
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where = list(filter(lambda s: len(s) > 0, [a.get_where() for a in attributes]))
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wikibase_label = list(filter(lambda s: len(s) > 0, [a.get_wikibase_label() for a in attributes]))
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group_by = list(filter(lambda s: len(s) > 0, [a.get_group_by() for a in attributes]))
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query = QUERY_TEMPLATE\
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.replace('%QUERY%', sparql_string_escape(query))\
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.replace('%SELECT%', ' '.join(select))\
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.replace('%WHERE%', '\n '.join(where))\
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.replace('%WIKIBASE_LABELS%', '\n '.join(wikibase_label))\
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.replace('%GROUP_BY%', ' '.join(group_by))\
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.replace('%LANGUAGE%', language)
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return query, attributes
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def get_attributes(language):
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attributes = []
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def add_value(name):
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attributes.append(WDAttribute(name))
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def add_amount(name):
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attributes.append(WDAmountAttribute(name))
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def add_label(name):
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attributes.append(WDLabelAttribute(name))
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def add_url(name, url_id=None, **kwargs):
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attributes.append(WDURLAttribute(name, url_id, kwargs))
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def add_image(name, url_id=None, priority=1):
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attributes.append(WDImageAttribute(name, url_id, priority))
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def add_date(name):
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attributes.append(WDDateAttribute(name))
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# Dates
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for p in ['P571', # inception date
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'P576', # dissolution date
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'P580', # start date
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'P582', # end date
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'P569', # date of birth
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'P570', # date of death
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'P619', # date of spacecraft launch
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'P620']: # date of spacecraft landing
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add_date(p)
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for p in ['P27', # country of citizenship
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'P495', # country of origin
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'P17', # country
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'P159']: # headquarters location
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add_label(p)
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# Places
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for p in ['P36', # capital
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'P35', # head of state
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'P6', # head of government
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'P122', # basic form of government
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'P37']: # official language
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add_label(p)
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add_value('P1082') # population
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add_amount('P2046') # area
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add_amount('P281') # postal code
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add_label('P38') # currency
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add_amount('P2048') # heigth (building)
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# Media
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for p in ['P400', # platform (videogames, computing)
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'P50', # author
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'P170', # creator
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'P57', # director
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'P175', # performer
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'P178', # developer
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'P162', # producer
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'P176', # manufacturer
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'P58', # screenwriter
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'P272', # production company
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'P264', # record label
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'P123', # publisher
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'P449', # original network
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'P750', # distributed by
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'P86']: # composer
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add_label(p)
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add_date('P577') # publication date
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add_label('P136') # genre (music, film, artistic...)
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add_label('P364') # original language
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add_value('P212') # ISBN-13
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add_value('P957') # ISBN-10
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add_label('P275') # copyright license
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add_label('P277') # programming language
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add_value('P348') # version
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add_label('P840') # narrative location
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# Languages
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add_value('P1098') # number of speakers
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add_label('P282') # writing system
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add_label('P1018') # language regulatory body
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add_value('P218') # language code (ISO 639-1)
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# Other
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add_label('P169') # ceo
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add_label('P112') # founded by
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add_label('P1454') # legal form (company, organization)
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add_label('P137') # operator (service, facility, ...)
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add_label('P1029') # crew members (tripulation)
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add_label('P225') # taxon name
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add_value('P274') # chemical formula
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add_label('P1346') # winner (sports, contests, ...)
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add_value('P1120') # number of deaths
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add_value('P498') # currency code (ISO 4217)
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# URL
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add_url('P856', official=True) # official website
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attributes.append(WDArticle(language)) # wikipedia (user language)
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if not language.startswith('en'):
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attributes.append(WDArticle('en')) # wikipedia (english)
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add_url('P1324') # source code repository
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add_url('P1581') # blog
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add_url('P434', url_id='musicbrainz_artist')
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add_url('P435', url_id='musicbrainz_work')
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add_url('P436', url_id='musicbrainz_release_group')
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add_url('P966', url_id='musicbrainz_label')
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add_url('P345', url_id='imdb_id')
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add_url('P2397', url_id='youtube_channel')
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add_url('P1651', url_id='youtube_video')
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add_url('P2002', url_id='twitter_profile')
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add_url('P2013', url_id='facebook_profile')
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add_url('P2003', url_id='instagram_profile')
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# Map
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attributes.append(WDGeoAttribute('P625'))
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# Image
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add_image('P15', priority=1, url_id='wikimedia_image') # route map
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add_image('P242', priority=2, url_id='wikimedia_image') # locator map
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add_image('P154', priority=3, url_id='wikimedia_image') # logo
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add_image('P18', priority=4, url_id='wikimedia_image') # image
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add_image('P41', priority=5, url_id='wikimedia_image') # flag
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add_image('P2716', priority=6, url_id='wikimedia_image') # collage
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add_image('P2910', priority=7, url_id='wikimedia_image') # icon
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return attributes
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class WDAttribute:
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__slots__ = 'name',
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def __init__(self, name):
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self.name = name
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def get_select(self):
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return '(group_concat(distinct ?{name};separator=", ") as ?{name}s)'.replace('{name}', self.name)
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def get_label(self, language):
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return get_label_for_entity(self.name, language)
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def get_where(self):
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return "OPTIONAL { ?item wdt:{name} ?{name} . }".replace('{name}', self.name)
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def get_wikibase_label(self):
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return ""
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def get_group_by(self):
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return ""
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def get_str(self, result, language):
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return result.get(self.name + 's')
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def __repr__(self):
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return '<' + str(type(self).__name__) + ':' + self.name + '>'
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class WDAmountAttribute(WDAttribute):
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def get_select(self):
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return '?{name} ?{name}Unit'.replace('{name}', self.name)
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def get_where(self):
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return """ OPTIONAL { ?item p:{name} ?{name}Node .
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?{name}Node rdf:type wikibase:BestRank ; ps:{name} ?{name} .
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OPTIONAL { ?{name}Node psv:{name}/wikibase:quantityUnit ?{name}Unit. } }""".replace('{name}', self.name)
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def get_group_by(self):
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return self.get_select()
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def get_str(self, result, language):
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value = result.get(self.name)
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unit = result.get(self.name + "Unit")
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if unit is not None:
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unit = unit.replace('http://www.wikidata.org/entity/', '')
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return value + " " + get_label_for_entity(unit, language)
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return value
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class WDArticle(WDAttribute):
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__slots__ = 'language', 'kwargs'
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def __init__(self, language, kwargs=None):
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super().__init__('wikipedia')
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self.language = language
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self.kwargs = kwargs or {}
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def get_label(self, language):
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# language parameter is ignored
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return "Wikipedia ({language})".replace('{language}', self.language)
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def get_select(self):
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return "?article{language} ?articleName{language}".replace('{language}', self.language)
|
|
|
|
def get_where(self):
|
|
return """OPTIONAL { ?article{language} schema:about ?item ;
|
|
schema:inLanguage "{language}" ;
|
|
schema:isPartOf <https://{language}.wikipedia.org/> ;
|
|
schema:name ?articleName{language} . }""".replace('{language}', self.language)
|
|
|
|
def get_group_by(self):
|
|
return self.get_select()
|
|
|
|
def get_str(self, result, language):
|
|
key = 'article{language}'.replace('{language}', self.language)
|
|
return result.get(key)
|
|
|
|
|
|
class WDLabelAttribute(WDAttribute):
|
|
|
|
def get_select(self):
|
|
return '(group_concat(distinct ?{name}Label;separator=", ") as ?{name}Labels)'.replace('{name}', self.name)
|
|
|
|
def get_where(self):
|
|
return "OPTIONAL { ?item wdt:{name} ?{name} . }".replace('{name}', self.name)
|
|
|
|
def get_wikibase_label(self):
|
|
return "?{name} rdfs:label ?{name}Label .".replace('{name}', self.name)
|
|
|
|
def get_str(self, result, language):
|
|
return result.get(self.name + 'Labels')
|
|
|
|
|
|
class WDURLAttribute(WDAttribute):
|
|
|
|
HTTP_WIKIMEDIA_IMAGE = 'http://commons.wikimedia.org/wiki/Special:FilePath/'
|
|
|
|
__slots__ = 'url_id', 'kwargs'
|
|
|
|
def __init__(self, name, url_id=None, kwargs=None):
|
|
super().__init__(name)
|
|
self.url_id = url_id
|
|
self.kwargs = kwargs
|
|
|
|
def get_str(self, result, language):
|
|
value = result.get(self.name + 's')
|
|
if self.url_id and value is not None and value != '':
|
|
value = value.split(',')[0]
|
|
url_id = self.url_id
|
|
if value.startswith(WDURLAttribute.HTTP_WIKIMEDIA_IMAGE):
|
|
value = value[len(WDURLAttribute.HTTP_WIKIMEDIA_IMAGE):]
|
|
url_id = 'wikimedia_image'
|
|
return get_external_url(url_id, value)
|
|
return value
|
|
|
|
|
|
class WDGeoAttribute(WDAttribute):
|
|
|
|
def get_label(self, language):
|
|
return "OpenStreetMap"
|
|
|
|
def get_select(self):
|
|
return "?{name}Lat ?{name}Long".replace('{name}', self.name)
|
|
|
|
def get_where(self):
|
|
return """OPTIONAL { ?item p:{name}/psv:{name} [
|
|
wikibase:geoLatitude ?{name}Lat ;
|
|
wikibase:geoLongitude ?{name}Long ] }""".replace('{name}', self.name)
|
|
|
|
def get_group_by(self):
|
|
return self.get_select()
|
|
|
|
def get_str(self, result, language):
|
|
latitude = result.get(self.name + 'Lat')
|
|
longitude = result.get(self.name + 'Long')
|
|
if latitude and longitude:
|
|
return latitude + ' ' + longitude
|
|
return None
|
|
|
|
def get_geo_url(self, result, osm_zoom=19):
|
|
latitude = result.get(self.name + 'Lat')
|
|
longitude = result.get(self.name + 'Long')
|
|
if latitude and longitude:
|
|
return get_earth_coordinates_url(latitude, longitude, osm_zoom)
|
|
return None
|
|
|
|
|
|
class WDImageAttribute(WDURLAttribute):
|
|
|
|
__slots__ = 'priority',
|
|
|
|
def __init__(self, name, url_id=None, priority=100):
|
|
super().__init__(name, url_id)
|
|
self.priority = priority
|
|
|
|
|
|
class WDDateAttribute(WDAttribute):
|
|
|
|
def get_select(self):
|
|
return '?{name} ?{name}timePrecision ?{name}timeZone ?{name}timeCalendar'.replace('{name}', self.name)
|
|
|
|
def get_where(self):
|
|
# To remove duplicate, add
|
|
# FILTER NOT EXISTS { ?item p:{name}/psv:{name}/wikibase:timeValue ?{name}bis FILTER (?{name}bis < ?{name}) }
|
|
# this filter is too slow, so the response function ignore duplicate results
|
|
# (see the seen_entities variable)
|
|
return """OPTIONAL { ?item p:{name}/psv:{name} [
|
|
wikibase:timeValue ?{name} ;
|
|
wikibase:timePrecision ?{name}timePrecision ;
|
|
wikibase:timeTimezone ?{name}timeZone ;
|
|
wikibase:timeCalendarModel ?{name}timeCalendar ] . }
|
|
hint:Prior hint:rangeSafe true;""".replace('{name}', self.name)
|
|
|
|
def get_group_by(self):
|
|
return self.get_select()
|
|
|
|
def format_8(self, value, locale):
|
|
# precision: less than a year
|
|
return value
|
|
|
|
def format_9(self, value, locale):
|
|
year = int(value)
|
|
# precision: year
|
|
if year < 1584:
|
|
if year < 0:
|
|
return str(year - 1)
|
|
return str(year)
|
|
timestamp = isoparse(value)
|
|
return format_date(timestamp, format='yyyy', locale=locale)
|
|
|
|
def format_10(self, value, locale):
|
|
# precision: month
|
|
timestamp = isoparse(value)
|
|
return format_date(timestamp, format='MMMM y', locale=locale)
|
|
|
|
def format_11(self, value, locale):
|
|
# precision: day
|
|
timestamp = isoparse(value)
|
|
return format_date(timestamp, format='full', locale=locale)
|
|
|
|
def format_13(self, value, locale):
|
|
timestamp = isoparse(value)
|
|
# precision: minute
|
|
return get_datetime_format(format, locale=locale) \
|
|
.replace("'", "") \
|
|
.replace('{0}', format_time(timestamp, 'full', tzinfo=None,
|
|
locale=locale)) \
|
|
.replace('{1}', format_date(timestamp, 'short', locale=locale))
|
|
|
|
def format_14(self, value, locale):
|
|
# precision: second.
|
|
return format_datetime(isoparse(value), format='full', locale=locale)
|
|
|
|
DATE_FORMAT = {
|
|
'0': ('format_8', 1000000000),
|
|
'1': ('format_8', 100000000),
|
|
'2': ('format_8', 10000000),
|
|
'3': ('format_8', 1000000),
|
|
'4': ('format_8', 100000),
|
|
'5': ('format_8', 10000),
|
|
'6': ('format_8', 1000),
|
|
'7': ('format_8', 100),
|
|
'8': ('format_8', 10),
|
|
'9': ('format_9', 1), # year
|
|
'10': ('format_10', 1), # month
|
|
'11': ('format_11', 0), # day
|
|
'12': ('format_13', 0), # hour (not supported by babel, display minute)
|
|
'13': ('format_13', 0), # minute
|
|
'14': ('format_14', 0) # second
|
|
}
|
|
|
|
def get_str(self, result, language):
|
|
value = result.get(self.name)
|
|
if value == '' or value is None:
|
|
return None
|
|
precision = result.get(self.name + 'timePrecision')
|
|
date_format = WDDateAttribute.DATE_FORMAT.get(precision)
|
|
if date_format is not None:
|
|
format_method = getattr(self, date_format[0])
|
|
precision = date_format[1]
|
|
try:
|
|
if precision >= 1:
|
|
t = value.split('-')
|
|
if value.startswith('-'):
|
|
value = '-' + t[1]
|
|
else:
|
|
value = t[0]
|
|
return format_method(value, language)
|
|
except Exception:
|
|
return value
|
|
return value
|
|
|
|
|
|
def debug_explain_wikidata_query(query, method='GET'):
|
|
if method == 'GET':
|
|
http_response = get(SPARQL_EXPLAIN_URL + '&' + urlencode({'query': query}), headers=get_headers())
|
|
else:
|
|
http_response = post(SPARQL_EXPLAIN_URL, data={'query': query}, headers=get_headers())
|
|
http_response.raise_for_status()
|
|
return http_response.content
|
|
|
|
|
|
def init(engine_settings=None):
|
|
# WIKIDATA_PROPERTIES : add unit symbols
|
|
WIKIDATA_PROPERTIES.update(WIKIDATA_UNITS)
|
|
|
|
# WIKIDATA_PROPERTIES : add property labels
|
|
wikidata_property_names = []
|
|
for attribute in get_attributes('en'):
|
|
if type(attribute) in (WDAttribute, WDAmountAttribute, WDURLAttribute, WDDateAttribute, WDLabelAttribute):
|
|
if attribute.name not in WIKIDATA_PROPERTIES:
|
|
wikidata_property_names.append("wd:" + attribute.name)
|
|
query = QUERY_PROPERTY_NAMES.replace('%ATTRIBUTES%', " ".join(wikidata_property_names))
|
|
jsonresponse = send_wikidata_query(query)
|
|
for result in jsonresponse.get('results', {}).get('bindings', {}):
|
|
name = result['name']['value']
|
|
lang = result['name']['xml:lang']
|
|
entity_id = result['item']['value'].replace('http://www.wikidata.org/entity/', '')
|
|
WIKIDATA_PROPERTIES[(entity_id, lang)] = name.capitalize()
|