# SPDX-License-Identifier: AGPL-3.0-or-later
"""This module implements functions needed for the autocompleter.
"""
# pylint: disable=use-dict-literal
import json
import html
from urllib.parse import urlencode, quote_plus
import lxml.etree
import lxml.html
from httpx import HTTPError
from searx.extended_types import SXNG_Response
from searx import settings
from searx.engines import (
engines,
google,
)
from searx.network import get as http_get, post as http_post
from searx.exceptions import SearxEngineResponseException
def update_kwargs(**kwargs):
if 'timeout' not in kwargs:
kwargs['timeout'] = settings['outgoing']['request_timeout']
kwargs['raise_for_httperror'] = True
def get(*args, **kwargs) -> SXNG_Response:
update_kwargs(**kwargs)
return http_get(*args, **kwargs)
def post(*args, **kwargs) -> SXNG_Response:
update_kwargs(**kwargs)
return http_post(*args, **kwargs)
def baidu(query, _lang):
# baidu search autocompleter
base_url = "https://www.baidu.com/sugrec?"
response = get(base_url + urlencode({'ie': 'utf-8', 'json': 1, 'prod': 'pc', 'wd': query}))
results = []
if response.ok:
data = response.json()
if 'g' in data:
for item in data['g']:
results.append(item['q'])
return results
def brave(query, _lang):
# brave search autocompleter
url = 'https://search.brave.com/api/suggest?'
url += urlencode({'q': query})
country = 'all'
# if lang in _brave:
# country = lang
kwargs = {'cookies': {'country': country}}
resp = get(url, **kwargs)
results = []
if resp.ok:
data = resp.json()
for item in data[1]:
results.append(item)
return results
def dbpedia(query, _lang):
# dbpedia autocompleter, no HTTPS
autocomplete_url = 'https://lookup.dbpedia.org/api/search.asmx/KeywordSearch?'
response = get(autocomplete_url + urlencode(dict(QueryString=query)))
results = []
if response.ok:
dom = lxml.etree.fromstring(response.content)
results = dom.xpath('//Result/Label//text()')
return results
def duckduckgo(query, sxng_locale):
"""Autocomplete from DuckDuckGo. Supports DuckDuckGo's languages"""
traits = engines['duckduckgo'].traits
args = {
'q': query,
'kl': traits.get_region(sxng_locale, traits.all_locale),
}
url = 'https://duckduckgo.com/ac/?type=list&' + urlencode(args)
resp = get(url)
ret_val = []
if resp.ok:
j = resp.json()
if len(j) > 1:
ret_val = j[1]
return ret_val
def google_complete(query, sxng_locale):
"""Autocomplete from Google. Supports Google's languages and subdomains
(:py:obj:`searx.engines.google.get_google_info`) by using the async REST
API::
https://{subdomain}/complete/search?{args}
"""
google_info = google.get_google_info({'searxng_locale': sxng_locale}, engines['google'].traits)
url = 'https://{subdomain}/complete/search?{args}'
args = urlencode(
{
'q': query,
'client': 'gws-wiz',
'hl': google_info['params']['hl'],
}
)
results = []
resp = get(url.format(subdomain=google_info['subdomain'], args=args))
if resp and resp.ok:
json_txt = resp.text[resp.text.find('[') : resp.text.find(']', -3) + 1]
data = json.loads(json_txt)
for item in data[0]:
results.append(lxml.html.fromstring(item[0]).text_content())
return results
def mwmbl(query, _lang):
"""Autocomplete from Mwmbl_."""
# mwmbl autocompleter
url = 'https://api.mwmbl.org/search/complete?{query}'
results = get(url.format(query=urlencode({'q': query}))).json()[1]
# results starting with `go:` are direct urls and not useful for auto completion
return [result for result in results if not result.startswith("go: ") and not result.startswith("search: ")]
def seznam(query, _lang):
# seznam search autocompleter
url = 'https://suggest.seznam.cz/fulltext/cs?{query}'
resp = get(
url.format(
query=urlencode(
{'phrase': query, 'cursorPosition': len(query), 'format': 'json-2', 'highlight': '1', 'count': '6'}
)
)
)
if not resp.ok:
return []
data = resp.json()
return [
''.join([part.get('text', '') for part in item.get('text', [])])
for item in data.get('result', [])
if item.get('itemType', None) == 'ItemType.TEXT'
]
def stract(query, _lang):
# stract autocompleter (beta)
url = f"https://stract.com/beta/api/autosuggest?q={quote_plus(query)}"
resp = post(url)
if not resp.ok:
return []
return [html.unescape(suggestion['raw']) for suggestion in resp.json()]
def startpage(query, sxng_locale):
"""Autocomplete from Startpage. Supports Startpage's languages"""
lui = engines['startpage'].traits.get_language(sxng_locale, 'english')
url = 'https://startpage.com/suggestions?{query}'
resp = get(url.format(query=urlencode({'q': query, 'segment': 'startpage.udog', 'lui': lui})))
data = resp.json()
return [e['text'] for e in data.get('suggestions', []) if 'text' in e]
def swisscows(query, _lang):
# swisscows autocompleter
url = 'https://swisscows.ch/api/suggest?{query}&itemsCount=5'
resp = json.loads(get(url.format(query=urlencode({'query': query}))).text)
return resp
def qwant(query, sxng_locale):
"""Autocomplete from Qwant. Supports Qwant's regions."""
results = []
locale = engines['qwant'].traits.get_region(sxng_locale, 'en_US')
url = 'https://api.qwant.com/v3/suggest?{query}'
resp = get(url.format(query=urlencode({'q': query, 'locale': locale, 'version': '2'})))
if resp.ok:
data = resp.json()
if data['status'] == 'success':
for item in data['data']['items']:
results.append(item['value'])
return results
def wikipedia(query, sxng_locale):
"""Autocomplete from Wikipedia. Supports Wikipedia's languages (aka netloc)."""
results = []
eng_traits = engines['wikipedia'].traits
wiki_lang = eng_traits.get_language(sxng_locale, 'en')
wiki_netloc = eng_traits.custom['wiki_netloc'].get(wiki_lang, 'en.wikipedia.org') # type: ignore
url = 'https://{wiki_netloc}/w/api.php?{args}'
args = urlencode(
{
'action': 'opensearch',
'format': 'json',
'formatversion': '2',
'search': query,
'namespace': '0',
'limit': '10',
}
)
resp = get(url.format(args=args, wiki_netloc=wiki_netloc))
if resp.ok:
data = resp.json()
if len(data) > 1:
results = data[1]
return results
def yandex(query, _lang):
# yandex autocompleter
url = "https://suggest.yandex.com/suggest-ff.cgi?{0}"
resp = json.loads(get(url.format(urlencode(dict(part=query)))).text)
if len(resp) > 1:
return resp[1]
return []
backends = {
'baidu': baidu,
'brave': brave,
'dbpedia': dbpedia,
'duckduckgo': duckduckgo,
'google': google_complete,
'mwmbl': mwmbl,
'qwant': qwant,
'seznam': seznam,
'startpage': startpage,
'stract': stract,
'swisscows': swisscows,
'wikipedia': wikipedia,
'yandex': yandex,
}
def search_autocomplete(backend_name, query, sxng_locale):
backend = backends.get(backend_name)
if backend is None:
return []
try:
return backend(query, sxng_locale)
except (HTTPError, SearxEngineResponseException):
return []
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