mirror of
https://github.com/searxng/searxng.git
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a4dcfa025c
move meta information from comment to the about variable so the preferences, the documentation can show these information
207 lines
7.3 KiB
Python
207 lines
7.3 KiB
Python
#!/usr/bin/env python
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import sys
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import json
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from urllib.parse import quote, urlparse
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from os.path import realpath, dirname
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import cld3
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from lxml.html import fromstring
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# set path
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sys.path.append(realpath(dirname(realpath(__file__)) + '/../'))
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from searx.engines.wikidata import send_wikidata_query
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from searx.utils import extract_text
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import searx
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import searx.search
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import searx.poolrequests
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SPARQL_WIKIPEDIA_ARTICLE = """
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SELECT DISTINCT ?item ?name
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WHERE {
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VALUES ?item { %IDS% }
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?article schema:about ?item ;
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schema:inLanguage ?lang ;
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schema:name ?name ;
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schema:isPartOf [ wikibase:wikiGroup "wikipedia" ] .
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FILTER(?lang in (%LANGUAGES_SPARQL%)) .
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FILTER (!CONTAINS(?name, ':')) .
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}
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"""
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SPARQL_DESCRIPTION = """
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SELECT DISTINCT ?item ?itemDescription
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WHERE {
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VALUES ?item { %IDS% }
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?item schema:description ?itemDescription .
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FILTER (lang(?itemDescription) in (%LANGUAGES_SPARQL%))
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}
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ORDER BY ?itemLang
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"""
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LANGUAGES = searx.settings['locales'].keys()
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LANGUAGES_SPARQL = ', '.join(set(map(lambda l: repr(l.split('_')[0]), LANGUAGES)))
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IDS = None
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descriptions = {}
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wd_to_engine_name = {}
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def normalize_description(description):
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for c in [chr(c) for c in range(0, 31)]:
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description = description.replace(c, ' ')
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description = ' '.join(description.strip().split())
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return description
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def update_description(engine_name, lang, description, source, replace=True):
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if replace or lang not in descriptions[engine_name]:
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descriptions[engine_name][lang] = [normalize_description(description), source]
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def get_wikipedia_summary(language, pageid):
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search_url = 'https://{language}.wikipedia.org/api/rest_v1/page/summary/{title}'
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url = search_url.format(title=quote(pageid), language=language)
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try:
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response = searx.poolrequests.get(url)
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response.raise_for_status()
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api_result = json.loads(response.text)
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return api_result.get('extract')
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except:
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return None
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def detect_language(text):
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r = cld3.get_language(str(text)) # pylint: disable=E1101
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if r is not None and r.probability >= 0.98 and r.is_reliable:
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return r.language
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return None
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def get_website_description(url, lang1, lang2=None):
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headers = {
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'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:84.0) Gecko/20100101 Firefox/84.0',
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'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8',
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'DNT': '1',
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'Upgrade-Insecure-Requests': '1',
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'Sec-GPC': '1',
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'Cache-Control': 'max-age=0',
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}
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if lang1 is not None:
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lang_list = [lang1]
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if lang2 is not None:
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lang_list.append(lang2)
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headers['Accept-Language'] = f'{",".join(lang_list)};q=0.8'
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try:
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response = searx.poolrequests.get(url, headers=headers, timeout=10)
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response.raise_for_status()
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except Exception:
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return (None, None)
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try:
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html = fromstring(response.text)
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except ValueError:
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html = fromstring(response.content)
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description = extract_text(html.xpath('/html/head/meta[@name="description"]/@content'))
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if not description:
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description = extract_text(html.xpath('/html/head/meta[@property="og:description"]/@content'))
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if not description:
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description = extract_text(html.xpath('/html/head/title'))
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lang = extract_text(html.xpath('/html/@lang'))
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if lang is None and len(lang1) > 0:
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lang = lang1
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lang = detect_language(description) or lang or 'en'
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lang = lang.split('_')[0]
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lang = lang.split('-')[0]
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return (lang, description)
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def initialize():
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global descriptions, wd_to_engine_name, IDS
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searx.search.initialize()
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for engine_name, engine in searx.engines.engines.items():
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descriptions[engine_name] = {}
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wikidata_id = getattr(engine, "about", {}).get('wikidata_id')
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if wikidata_id is not None:
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wd_to_engine_name.setdefault(wikidata_id, set()).add(engine_name)
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IDS = ' '.join(list(map(lambda wd_id: 'wd:' + wd_id, wd_to_engine_name.keys())))
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def fetch_wikidata_descriptions():
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global IDS
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result = send_wikidata_query(SPARQL_DESCRIPTION
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.replace('%IDS%', IDS)
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.replace('%LANGUAGES_SPARQL%', LANGUAGES_SPARQL))
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if result is not None:
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for binding in result['results']['bindings']:
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wikidata_id = binding['item']['value'].replace('http://www.wikidata.org/entity/', '')
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lang = binding['itemDescription']['xml:lang']
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description = binding['itemDescription']['value']
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if ' ' in description: # skip unique word description (like "website")
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for engine_name in wd_to_engine_name[wikidata_id]:
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update_description(engine_name, lang, description, 'wikidata')
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def fetch_wikipedia_descriptions():
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global IDS
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result = send_wikidata_query(SPARQL_WIKIPEDIA_ARTICLE
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.replace('%IDS%', IDS)
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.replace('%LANGUAGES_SPARQL%', LANGUAGES_SPARQL))
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if result is not None:
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for binding in result['results']['bindings']:
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wikidata_id = binding['item']['value'].replace('http://www.wikidata.org/entity/', '')
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lang = binding['name']['xml:lang']
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pageid = binding['name']['value']
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description = get_wikipedia_summary(lang, pageid)
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if description is not None and ' ' in description:
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for engine_name in wd_to_engine_name[wikidata_id]:
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update_description(engine_name, lang, description, 'wikipedia')
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def normalize_url(url):
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url = url.replace('{language}', 'en')
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url = urlparse(url)._replace(path='/', params='', query='', fragment='').geturl()
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url = url.replace('https://api.', 'https://')
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return url
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def fetch_website_description(engine_name, website):
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default_lang, default_description = get_website_description(website, None, None)
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if default_lang is None or default_description is None:
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return
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if default_lang not in descriptions[engine_name]:
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descriptions[engine_name][default_lang] = [normalize_description(default_description), website]
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for request_lang in ('en-US', 'es-US', 'fr-FR', 'zh', 'ja', 'ru', 'ar', 'ko'):
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if request_lang.split('-')[0] not in descriptions[engine_name]:
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lang, desc = get_website_description(website, request_lang, request_lang.split('-')[0])
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if desc is not None and desc != default_description:
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update_description(engine_name, lang, desc, website, replace=False)
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else:
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break
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def fetch_website_descriptions():
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for engine_name, engine in searx.engines.engines.items():
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website = getattr(engine, "about", {}).get('website')
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if website is None:
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website = normalize_url(getattr(engine, "search_url"))
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if website is None:
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website = normalize_url(getattr(engine, "base_url"))
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if website is not None:
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fetch_website_description(engine_name, website)
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def main():
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initialize()
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fetch_wikidata_descriptions()
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fetch_wikipedia_descriptions()
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fetch_website_descriptions()
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sys.stdout.write(json.dumps(descriptions, indent=1, separators=(',', ':'), ensure_ascii=False))
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if __name__ == "__main__":
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main()
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