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[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 2021-09-18 10:58:57 +02:00
parent 8961131497
commit f8d5fe0f11
1 changed files with 145 additions and 38 deletions
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175
searx_extra/update/update_engine_descriptions.py
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@ -1,15 +1,19 @@
#!/usr/bin/env python
import sys
import json
from urllib.parse import quote, urlparse
import detect_language
from urllib.parse import urlparse
from os.path import join
from lxml.html import fromstring
from langdetect import detect_langs
from langdetect.lang_detect_exception import LangDetectException
from searx.engines import wikidata, set_loggers
from searx.utils import extract_text
from searx.utils import extract_text, match_language
from searx.locales import LOCALE_NAMES
import searx
from searx import searx_dir
from searx.utils import gen_useragent
import searx.search
import searx.network
@ -18,6 +22,7 @@ set_loggers(wikidata, 'wikidata')
SPARQL_WIKIPEDIA_ARTICLE = """
SELECT DISTINCT ?item ?name
WHERE {
hint:Query hint:optimizer "None".
VALUES ?item { %IDS% }
?article schema:about ?item ;
schema:inLanguage ?lang ;
@ -38,8 +43,23 @@ WHERE {
ORDER BY ?itemLang
"""
NOT_A_DESCRIPTION = [
'web site',
'site web',
'komputa serĉilo',
'interreta serĉilo',
'bilaketa motor',
'web search engine',
'wikimedia täpsustuslehekülg',
]
SKIP_ENGINE_SOURCE = [
('gitlab', 'wikidata') # descriptions are about wikipedia disambiguation pages
]
LANGUAGES = LOCALE_NAMES.keys()
LANGUAGES_SPARQL = ', '.join(set(map(lambda l: repr(l.split('_')[0]), LANGUAGES)))
WIKIPEDIA_LANGUAGES = {'language': 'wikipedia_language'}
LANGUAGES_SPARQL = ''
IDS = None
descriptions = {}
@ -54,15 +74,30 @@ def normalize_description(description):
def update_description(engine_name, lang, description, source, replace=True):
if not isinstance(description, str):
return
description = normalize_description(description)
if description.lower() == engine_name.lower():
return
if description.lower() in NOT_A_DESCRIPTION:
return
if (engine_name, source) in SKIP_ENGINE_SOURCE:
return
if ' ' not in description:
# skip unique word description (like "website")
return
if replace or lang not in descriptions[engine_name]:
descriptions[engine_name][lang] = [normalize_description(description), source]
descriptions[engine_name][lang] = [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)
def get_wikipedia_summary(lang, pageid):
params = {
'language': lang.replace('_','-'),
'headers': {}
}
searx.engines.engines['wikipedia'].request(pageid, params)
try:
response = searx.network.get(url)
response = searx.network.get(params['url'], headers=params['headers'], timeout=10)
response.raise_for_status()
api_result = json.loads(response.text)
return api_result.get('extract')
@ -71,15 +106,19 @@ def get_wikipedia_summary(language, pageid):
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
try:
r = detect_langs(str(text)) # pylint: disable=E1101
except LangDetectException:
return None
if len(r) > 0 and r[0].prob > 0.95:
return r[0].lang
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',
'User-Agent': gen_useragent(),
'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8',
'DNT': '1',
'Upgrade-Insecure-Requests': '1',
@ -117,8 +156,15 @@ def get_website_description(url, lang1, lang2=None):
def initialize():
global descriptions, wd_to_engine_name, IDS
global IDS, WIKIPEDIA_LANGUAGES, LANGUAGES_SPARQL
searx.search.initialize()
wikipedia_engine = searx.engines.engines['wikipedia']
WIKIPEDIA_LANGUAGES = {
language: wikipedia_engine.url_lang(language.replace('_', '-'))
for language in LANGUAGES
}
WIKIPEDIA_LANGUAGES['nb_NO'] = 'no'
LANGUAGES_SPARQL = ', '.join(f"'{l}'" for l in set(WIKIPEDIA_LANGUAGES.values()))
for engine_name, engine in searx.engines.engines.items():
descriptions[engine_name] = {}
wikidata_id = getattr(engine, "about", {}).get('wikidata_id')
@ -129,7 +175,7 @@ def initialize():
def fetch_wikidata_descriptions():
global IDS
searx.network.set_timeout_for_thread(60)
result = wikidata.send_wikidata_query(
SPARQL_DESCRIPTION
.replace('%IDS%', IDS)
@ -138,15 +184,15 @@ def fetch_wikidata_descriptions():
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']
wikidata_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]:
for lang in LANGUAGES:
if WIKIPEDIA_LANGUAGES[lang] == wikidata_lang:
update_description(engine_name, lang, description, 'wikidata')
def fetch_wikipedia_descriptions():
global IDS
result = wikidata.send_wikidata_query(
SPARQL_WIKIPEDIA_ARTICLE
.replace('%IDS%', IDS)
@ -155,11 +201,12 @@ def fetch_wikipedia_descriptions():
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']
wikidata_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]:
for lang in LANGUAGES:
if WIKIPEDIA_LANGUAGES[lang] == wikidata_lang:
description = get_wikipedia_summary(lang, pageid)
update_description(engine_name, lang, description, 'wikipedia')
@ -173,36 +220,96 @@ def normalize_url(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:
# the front page can't be fetched: skip this engine
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:
wikipedia_languages_r = { V: K for K, V in WIKIPEDIA_LANGUAGES.items() }
languages = ['en', 'es', 'pt', 'ru', 'tr', 'fr']
languages = languages + [ l for l in LANGUAGES if l not in languages]
previous_matched_lang = None
previous_count = 0
for lang in languages:
if lang not in descriptions[engine_name]:
fetched_lang, desc = get_website_description(website, lang, WIKIPEDIA_LANGUAGES[lang])
if fetched_lang is None or desc is None:
continue
matched_lang = match_language(fetched_lang, LANGUAGES, fallback=None)
if matched_lang is None:
fetched_wikipedia_lang = match_language(fetched_lang, WIKIPEDIA_LANGUAGES.values(), fallback=None)
matched_lang = wikipedia_languages_r.get(fetched_wikipedia_lang)
if matched_lang is not None:
update_description(engine_name, matched_lang, desc, website, replace=False)
# check if desc changed with the different lang values
if matched_lang == previous_matched_lang:
previous_count += 1
if previous_count == 6:
# the website has returned the same description for 6 different languages in Accept-Language header
# stop now
break
else:
previous_matched_lang = matched_lang
previous_count = 0
def fetch_website_descriptions():
for engine_name, engine in searx.engines.engines.items():
website = getattr(engine, "about", {}).get('website')
if website is None:
if website is None and hasattr(engine, "search_url"):
website = normalize_url(getattr(engine, "search_url"))
if website is None:
if website is None and hasattr(engine, "base_url"):
website = normalize_url(getattr(engine, "base_url"))
if website is not None:
fetch_website_description(engine_name, website)
def get_engine_descriptions_filename():
return join(join(searx_dir, "data"), "engine_descriptions.json")
def get_output():
"""
From descriptions[engine][language] = [description, source]
To
* output[language][engine] = description_and_source
* description_and_source can be:
* [description, source]
* description (if source = "wikipedia")
* [f"engine:lang", "ref"] (reference to another existing description)
"""
output = {
locale: {} for locale in LOCALE_NAMES
}
seen_descriptions = {}
for engine_name, lang_descriptions in descriptions.items():
for language, description in lang_descriptions.items():
if description[0] in seen_descriptions:
ref = seen_descriptions[description[0]]
description = [f'{ref[0]}:{ref[1]}', 'ref']
else:
seen_descriptions[description[0]] = (engine_name, language)
if description[1] == 'wikipedia':
description = description[0]
output.setdefault(language, {}).setdefault(engine_name, description)
return output
def main():
initialize()
print('Fetching wikidata descriptions')
fetch_wikidata_descriptions()
print('Fetching wikipedia descriptions')
fetch_wikipedia_descriptions()
print('Fetching website descriptions')
fetch_website_descriptions()
sys.stdout.write(json.dumps(descriptions, indent=1, separators=(',', ':'), ensure_ascii=False))
output = get_output()
with open(get_engine_descriptions_filename(), 'w', encoding='utf8') as f:
f.write(json.dumps(output, indent=1, separators=(',', ':'), ensure_ascii=False))
if __name__ == "__main__":