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# SPDX-License-Identifier: AGPL-3.0-or-later
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"""
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Wikipedia (Web)
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"""
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from urllib.parse import quote
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from json import loads
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from lxml.html import fromstring
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from searx.utils import match_language, searx_useragent
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from searx.raise_for_httperror import raise_for_httperror
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# about
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about = {
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"website": 'https://www.wikipedia.org/',
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"wikidata_id": 'Q52',
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"official_api_documentation": 'https://en.wikipedia.org/api/',
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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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# search-url
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search_url = 'https://{language}.wikipedia.org/api/rest_v1/page/summary/{title}'
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supported_languages_url = 'https://meta.wikimedia.org/wiki/List_of_Wikipedias'
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language_variants = {"zh": ("zh-cn", "zh-hk", "zh-mo", "zh-my", "zh-sg", "zh-tw")}
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# set language in base_url
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def url_lang(lang):
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lang_pre = lang.split('-')[0]
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if lang_pre == 'all' or lang_pre not in supported_languages and lang_pre not in language_aliases:
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return 'en'
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return match_language(lang, supported_languages, language_aliases).split('-')[0]
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# do search-request
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def request(query, params):
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if query.islower():
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query = query.title()
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language = url_lang(params['language'])
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params['url'] = search_url.format(title=quote(query),
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language=language)
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if params['language'].lower() in language_variants.get(language, []):
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params['headers']['Accept-Language'] = params['language'].lower()
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params['headers']['User-Agent'] = searx_useragent()
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params['raise_for_httperror'] = False
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params['soft_max_redirects'] = 2
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return params
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# get response from search-request
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def response(resp):
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if resp.status_code == 404:
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return []
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if resp.status_code == 400:
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try:
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api_result = loads(resp.text)
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except:
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pass
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else:
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if api_result['type'] == 'https://mediawiki.org/wiki/HyperSwitch/errors/bad_request' \
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and api_result['detail'] == 'title-invalid-characters':
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return []
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raise_for_httperror(resp)
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results = []
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api_result = loads(resp.text)
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# skip disambiguation pages
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if api_result.get('type') != 'standard':
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return []
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title = api_result['displaytitle']
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wikipedia_link = api_result['content_urls']['desktop']['page']
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results.append({'url': wikipedia_link, 'title': title})
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results.append({'infobox': title,
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'id': wikipedia_link,
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'content': api_result.get('extract', ''),
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'img_src': api_result.get('thumbnail', {}).get('source'),
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'urls': [{'title': 'Wikipedia', 'url': wikipedia_link}]})
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return results
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# get supported languages from their site
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def _fetch_supported_languages(resp):
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supported_languages = {}
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dom = fromstring(resp.text)
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tables = dom.xpath('//table[contains(@class,"sortable")]')
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for table in tables:
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# exclude header row
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trs = table.xpath('.//tr')[1:]
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for tr in trs:
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td = tr.xpath('./td')
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code = td[3].xpath('./a')[0].text
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name = td[2].xpath('./a')[0].text
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english_name = td[1].xpath('./a')[0].text
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articles = int(td[4].xpath('./a/b')[0].text.replace(',', ''))
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# exclude languages with too few articles
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if articles >= 100:
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supported_languages[code] = {"name": name, "english_name": english_name, "articles": articles}
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return supported_languages
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