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			306 lines
		
	
	
		
			9.2 KiB
		
	
	
	
		
			Python
		
	
	
	
	
	
			
		
		
	
	
			306 lines
		
	
	
		
			9.2 KiB
		
	
	
	
		
			Python
		
	
	
	
	
	
import json
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from urllib import urlencode
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from searx.poolrequests import get
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from searx.utils import format_date_by_locale
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result_count = 1
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wikidata_host = 'https://www.wikidata.org'
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wikidata_api = wikidata_host + '/w/api.php'
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url_search = wikidata_api \
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    + '?action=query&list=search&format=json'\
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    + '&srnamespace=0&srprop=sectiontitle&{query}'
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url_detail = wikidata_api\
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    + '?action=wbgetentities&format=json'\
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    + '&props=labels%7Cinfo%7Csitelinks'\
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    + '%7Csitelinks%2Furls%7Cdescriptions%7Cclaims'\
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    + '&{query}'
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url_map = 'https://www.openstreetmap.org/'\
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    + '?lat={latitude}&lon={longitude}&zoom={zoom}&layers=M'
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def request(query, params):
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    params['url'] = url_search.format(
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        query=urlencode({'srsearch': query,
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                        'srlimit': result_count}))
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    return params
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def response(resp):
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    results = []
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    search_res = json.loads(resp.text)
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    wikidata_ids = set()
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    for r in search_res.get('query', {}).get('search', {}):
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        wikidata_ids.add(r.get('title', ''))
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    language = resp.search_params['language'].split('_')[0]
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    if language == 'all':
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        language = 'en'
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    url = url_detail.format(query=urlencode({'ids': '|'.join(wikidata_ids),
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                                            'languages': language + '|en'}))
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    htmlresponse = get(url)
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    jsonresponse = json.loads(htmlresponse.content)
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    for wikidata_id in wikidata_ids:
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        results = results + getDetail(jsonresponse, wikidata_id, language, resp.search_params['language'])
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    return results
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def getDetail(jsonresponse, wikidata_id, language, locale):
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    results = []
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    urls = []
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    attributes = []
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    result = jsonresponse.get('entities', {}).get(wikidata_id, {})
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    title = result.get('labels', {}).get(language, {}).get('value', None)
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    if title is None:
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        title = result.get('labels', {}).get('en', {}).get('value', None)
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    if title is None:
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        return results
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    description = result\
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        .get('descriptions', {})\
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        .get(language, {})\
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        .get('value', None)
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    if description is None:
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        description = result\
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            .get('descriptions', {})\
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            .get('en', {})\
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            .get('value', '')
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    claims = result.get('claims', {})
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    official_website = get_string(claims, 'P856', None)
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    if official_website is not None:
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        urls.append({'title': 'Official site', 'url': official_website})
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        results.append({'title': title, 'url': official_website})
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    wikipedia_link_count = 0
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    if language != 'en':
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        wikipedia_link_count += add_url(urls,
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                                        'Wikipedia (' + language + ')',
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                                        get_wikilink(result, language +
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                                                     'wiki'))
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    wikipedia_en_link = get_wikilink(result, 'enwiki')
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    wikipedia_link_count += add_url(urls,
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                                    'Wikipedia (en)',
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                                    wikipedia_en_link)
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    if wikipedia_link_count == 0:
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        misc_language = get_wiki_firstlanguage(result, 'wiki')
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        if misc_language is not None:
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            add_url(urls,
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                    'Wikipedia (' + misc_language + ')',
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                    get_wikilink(result, misc_language + 'wiki'))
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    if language != 'en':
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        add_url(urls,
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                'Wiki voyage (' + language + ')',
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                get_wikilink(result, language + 'wikivoyage'))
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    add_url(urls,
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            'Wiki voyage (en)',
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            get_wikilink(result, 'enwikivoyage'))
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    if language != 'en':
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        add_url(urls,
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                'Wikiquote (' + language + ')',
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                get_wikilink(result, language + 'wikiquote'))
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    add_url(urls,
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            'Wikiquote (en)',
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            get_wikilink(result, 'enwikiquote'))
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    add_url(urls,
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            'Commons wiki',
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            get_wikilink(result, 'commonswiki'))
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    add_url(urls,
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            'Location',
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            get_geolink(claims, 'P625', None))
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    add_url(urls,
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            'Wikidata',
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            'https://www.wikidata.org/wiki/'
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            + wikidata_id + '?uselang=' + language)
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    musicbrainz_work_id = get_string(claims, 'P435')
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    if musicbrainz_work_id is not None:
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        add_url(urls,
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                'MusicBrainz',
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                'http://musicbrainz.org/work/'
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                + musicbrainz_work_id)
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    musicbrainz_artist_id = get_string(claims, 'P434')
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    if musicbrainz_artist_id is not None:
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        add_url(urls,
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                'MusicBrainz',
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                'http://musicbrainz.org/artist/'
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                + musicbrainz_artist_id)
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    musicbrainz_release_group_id = get_string(claims, 'P436')
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    if musicbrainz_release_group_id is not None:
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        add_url(urls,
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                'MusicBrainz',
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                'http://musicbrainz.org/release-group/'
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                + musicbrainz_release_group_id)
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    musicbrainz_label_id = get_string(claims, 'P966')
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    if musicbrainz_label_id is not None:
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        add_url(urls,
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                'MusicBrainz',
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                'http://musicbrainz.org/label/'
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                + musicbrainz_label_id)
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    # musicbrainz_area_id = get_string(claims, 'P982')
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    # P1407 MusicBrainz series ID
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    # P1004 MusicBrainz place ID
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    # P1330 MusicBrainz instrument ID
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    # P1407 MusicBrainz series ID
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    postal_code = get_string(claims, 'P281', None)
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    if postal_code is not None:
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        attributes.append({'label': 'Postal code(s)', 'value': postal_code})
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    date_of_birth = get_time(claims, 'P569', None)
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    if date_of_birth is not None:
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        date_of_birth = format_date_by_locale(date_of_birth[8:], locale)
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        attributes.append({'label': 'Date of birth', 'value': date_of_birth})
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    date_of_death = get_time(claims, 'P570', None)
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    if date_of_death is not None:
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        date_of_death = format_date_by_locale(date_of_death[8:], locale)
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        attributes.append({'label': 'Date of death', 'value': date_of_death})
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    if len(attributes) == 0 and len(urls) == 2 and len(description) == 0:
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        results.append({
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                       'url': urls[0]['url'],
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                       'title': title,
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                       'content': description
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                       })
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    else:
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        results.append({
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                       'infobox': title,
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                       'id': wikipedia_en_link,
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                       'content': description,
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                       'attributes': attributes,
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                       'urls': urls
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                       })
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    return results
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def add_url(urls, title, url):
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    if url is not None:
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        urls.append({'title': title, 'url': url})
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        return 1
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    else:
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        return 0
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def get_mainsnak(claims, propertyName):
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    propValue = claims.get(propertyName, {})
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    if len(propValue) == 0:
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        return None
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    propValue = propValue[0].get('mainsnak', None)
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    return propValue
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def get_string(claims, propertyName, defaultValue=None):
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    propValue = claims.get(propertyName, {})
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    if len(propValue) == 0:
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        return defaultValue
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    result = []
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    for e in propValue:
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        mainsnak = e.get('mainsnak', {})
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        datavalue = mainsnak.get('datavalue', {})
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        if datavalue is not None:
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            result.append(datavalue.get('value', ''))
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    if len(result) == 0:
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        return defaultValue
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    else:
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        # TODO handle multiple urls
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        return result[0]
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def get_time(claims, propertyName, defaultValue=None):
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    propValue = claims.get(propertyName, {})
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    if len(propValue) == 0:
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        return defaultValue
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    result = []
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    for e in propValue:
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        mainsnak = e.get('mainsnak', {})
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        datavalue = mainsnak.get('datavalue', {})
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        if datavalue is not None:
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            value = datavalue.get('value', '')
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            result.append(value.get('time', ''))
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    if len(result) == 0:
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        return defaultValue
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    else:
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        return ', '.join(result)
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def get_geolink(claims, propertyName, defaultValue=''):
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    mainsnak = get_mainsnak(claims, propertyName)
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    if mainsnak is None:
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        return defaultValue
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    datatype = mainsnak.get('datatype', '')
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    datavalue = mainsnak.get('datavalue', {})
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    if datatype != 'globe-coordinate':
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        return defaultValue
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    value = datavalue.get('value', {})
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    precision = value.get('precision', 0.0002)
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    # there is no zoom information, deduce from precision (error prone)
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    # samples :
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    # 13 --> 5
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    # 1 --> 6
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    # 0.016666666666667 --> 9
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    # 0.00027777777777778 --> 19
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    # wolframalpha :
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    # quadratic fit { {13, 5}, {1, 6}, {0.0166666, 9}, {0.0002777777,19}}
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    # 14.1186-8.8322 x+0.625447 x^2
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    if precision < 0.0003:
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        zoom = 19
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    else:
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        zoom = int(15 - precision*8.8322 + precision*precision*0.625447)
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    url = url_map\
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        .replace('{latitude}', str(value.get('latitude', 0)))\
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        .replace('{longitude}', str(value.get('longitude', 0)))\
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        .replace('{zoom}', str(zoom))
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    return url
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def get_wikilink(result, wikiid):
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    url = result.get('sitelinks', {}).get(wikiid, {}).get('url', None)
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    if url is None:
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        return url
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    elif url.startswith('http://'):
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        url = url.replace('http://', 'https://')
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    elif url.startswith('//'):
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        url = 'https:' + url
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    return url
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def get_wiki_firstlanguage(result, wikipatternid):
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    for k in result.get('sitelinks', {}).keys():
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        if k.endswith(wikipatternid) and len(k) == (2+len(wikipatternid)):
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            return k[0:2]
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    return None
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