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