forked from zaclys/searxng
[fix] fix searx_extra/update/update_engine_descriptions.py
write ouput in searx/data/engine_descriptions.json instead of stdout use the wikipedia engine to fetch the wikipedia descriptions (for example use tl.wikipedia.org for the Filipino language)
This commit is contained in:
Alexandre Flament
parent
8961131497
commit
f8d5fe0f11
1 changed files with 145 additions and 38 deletions
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@ -1,15 +1,19 @@
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#!/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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import detect_language
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from urllib.parse import urlparse
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from os.path import join
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from lxml.html import fromstring
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from langdetect import detect_langs
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from langdetect.lang_detect_exception import LangDetectException
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from searx.engines import wikidata, set_loggers
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from searx.utils import extract_text
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from searx.utils import extract_text, match_language
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from searx.locales import LOCALE_NAMES
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import searx
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from searx import searx_dir
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from searx.utils import gen_useragent
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import searx.search
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import searx.network
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@ -18,6 +22,7 @@ set_loggers(wikidata, 'wikidata')
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SPARQL_WIKIPEDIA_ARTICLE = """
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SELECT DISTINCT ?item ?name
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WHERE {
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hint:Query hint:optimizer "None".
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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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@ -38,8 +43,23 @@ WHERE {
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ORDER BY ?itemLang
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"""
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NOT_A_DESCRIPTION = [
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'web site',
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'site web',
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'komputa serĉilo',
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'interreta serĉilo',
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'bilaketa motor',
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'web search engine',
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'wikimedia täpsustuslehekülg',
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]
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SKIP_ENGINE_SOURCE = [
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('gitlab', 'wikidata') # descriptions are about wikipedia disambiguation pages
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]
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LANGUAGES = LOCALE_NAMES.keys()
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LANGUAGES_SPARQL = ', '.join(set(map(lambda l: repr(l.split('_')[0]), LANGUAGES)))
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WIKIPEDIA_LANGUAGES = {'language': 'wikipedia_language'}
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LANGUAGES_SPARQL = ''
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IDS = None
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descriptions = {}
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@ -54,15 +74,30 @@ def normalize_description(description):
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def update_description(engine_name, lang, description, source, replace=True):
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if not isinstance(description, str):
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return
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description = normalize_description(description)
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if description.lower() == engine_name.lower():
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return
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if description.lower() in NOT_A_DESCRIPTION:
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return
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if (engine_name, source) in SKIP_ENGINE_SOURCE:
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return
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if ' ' not in description:
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# skip unique word description (like "website")
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return
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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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descriptions[engine_name][lang] = [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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def get_wikipedia_summary(lang, pageid):
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params = {
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'language': lang.replace('_','-'),
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'headers': {}
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}
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searx.engines.engines['wikipedia'].request(pageid, params)
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try:
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response = searx.network.get(url)
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response = searx.network.get(params['url'], headers=params['headers'], timeout=10)
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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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@ -71,15 +106,19 @@ def get_wikipedia_summary(language, pageid):
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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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try:
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r = detect_langs(str(text)) # pylint: disable=E1101
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except LangDetectException:
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return None
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if len(r) > 0 and r[0].prob > 0.95:
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return r[0].lang
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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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'User-Agent': gen_useragent(),
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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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@ -117,8 +156,15 @@ def get_website_description(url, lang1, lang2=None):
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def initialize():
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global descriptions, wd_to_engine_name, IDS
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global IDS, WIKIPEDIA_LANGUAGES, LANGUAGES_SPARQL
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searx.search.initialize()
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wikipedia_engine = searx.engines.engines['wikipedia']
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WIKIPEDIA_LANGUAGES = {
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language: wikipedia_engine.url_lang(language.replace('_', '-'))
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for language in LANGUAGES
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}
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WIKIPEDIA_LANGUAGES['nb_NO'] = 'no'
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LANGUAGES_SPARQL = ', '.join(f"'{l}'" for l in set(WIKIPEDIA_LANGUAGES.values()))
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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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@ -129,7 +175,7 @@ def initialize():
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def fetch_wikidata_descriptions():
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global IDS
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searx.network.set_timeout_for_thread(60)
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result = wikidata.send_wikidata_query(
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SPARQL_DESCRIPTION
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.replace('%IDS%', IDS)
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@ -138,15 +184,15 @@ def fetch_wikidata_descriptions():
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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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wikidata_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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for engine_name in wd_to_engine_name[wikidata_id]:
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for lang in LANGUAGES:
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if WIKIPEDIA_LANGUAGES[lang] == wikidata_lang:
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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 = wikidata.send_wikidata_query(
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SPARQL_WIKIPEDIA_ARTICLE
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.replace('%IDS%', IDS)
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@ -155,12 +201,13 @@ def fetch_wikipedia_descriptions():
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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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wikidata_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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for engine_name in wd_to_engine_name[wikidata_id]:
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for lang in LANGUAGES:
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if WIKIPEDIA_LANGUAGES[lang] == wikidata_lang:
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description = get_wikipedia_summary(lang, pageid)
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update_description(engine_name, lang, description, 'wikipedia')
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def normalize_url(url):
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@ -173,36 +220,96 @@ def normalize_url(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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# the front page can't be fetched: skip this engine
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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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wikipedia_languages_r = { V: K for K, V in WIKIPEDIA_LANGUAGES.items() }
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languages = ['en', 'es', 'pt', 'ru', 'tr', 'fr']
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languages = languages + [ l for l in LANGUAGES if l not in languages]
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previous_matched_lang = None
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previous_count = 0
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for lang in languages:
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if lang not in descriptions[engine_name]:
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fetched_lang, desc = get_website_description(website, lang, WIKIPEDIA_LANGUAGES[lang])
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if fetched_lang is None or desc is None:
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continue
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matched_lang = match_language(fetched_lang, LANGUAGES, fallback=None)
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if matched_lang is None:
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fetched_wikipedia_lang = match_language(fetched_lang, WIKIPEDIA_LANGUAGES.values(), fallback=None)
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matched_lang = wikipedia_languages_r.get(fetched_wikipedia_lang)
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if matched_lang is not None:
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update_description(engine_name, matched_lang, desc, website, replace=False)
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# check if desc changed with the different lang values
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if matched_lang == previous_matched_lang:
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previous_count += 1
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if previous_count == 6:
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# the website has returned the same description for 6 different languages in Accept-Language header
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# stop now
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break
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else:
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break
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previous_matched_lang = matched_lang
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previous_count = 0
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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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if website is None and hasattr(engine, "search_url"):
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website = normalize_url(getattr(engine, "search_url"))
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if website is None:
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if website is None and hasattr(engine, "base_url"):
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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 get_engine_descriptions_filename():
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return join(join(searx_dir, "data"), "engine_descriptions.json")
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def get_output():
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"""
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From descriptions[engine][language] = [description, source]
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To
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* output[language][engine] = description_and_source
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* description_and_source can be:
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* [description, source]
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* description (if source = "wikipedia")
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* [f"engine:lang", "ref"] (reference to another existing description)
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"""
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output = {
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locale: {} for locale in LOCALE_NAMES
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}
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seen_descriptions = {}
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for engine_name, lang_descriptions in descriptions.items():
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for language, description in lang_descriptions.items():
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if description[0] in seen_descriptions:
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ref = seen_descriptions[description[0]]
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description = [f'{ref[0]}:{ref[1]}', 'ref']
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else:
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seen_descriptions[description[0]] = (engine_name, language)
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if description[1] == 'wikipedia':
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description = description[0]
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output.setdefault(language, {}).setdefault(engine_name, description)
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return output
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def main():
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initialize()
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print('Fetching wikidata descriptions')
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fetch_wikidata_descriptions()
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print('Fetching wikipedia descriptions')
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fetch_wikipedia_descriptions()
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print('Fetching website 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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output = get_output()
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with open(get_engine_descriptions_filename(), 'w', encoding='utf8') as f:
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f.write(json.dumps(output, indent=1, separators=(',', ':'), ensure_ascii=False))
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if __name__ == "__main__":
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