mirror of https://github.com/searxng/searxng.git
126 lines
3.6 KiB
Python
126 lines
3.6 KiB
Python
# SPDX-License-Identifier: AGPL-3.0-or-later
|
|
"""
|
|
Bing (Web)
|
|
"""
|
|
|
|
import re
|
|
from urllib.parse import urlencode
|
|
from lxml import html
|
|
from searx import logger
|
|
from searx.utils import eval_xpath, extract_text, match_language
|
|
|
|
logger = logger.getChild('bing engine')
|
|
|
|
# about
|
|
about = {
|
|
"website": 'https://www.bing.com',
|
|
"wikidata_id": 'Q182496',
|
|
"official_api_documentation": 'https://www.microsoft.com/en-us/bing/apis/bing-web-search-api',
|
|
"use_official_api": False,
|
|
"require_api_key": False,
|
|
"results": 'HTML',
|
|
}
|
|
|
|
# engine dependent config
|
|
categories = ['general']
|
|
paging = True
|
|
language_support = True
|
|
supported_languages_url = 'https://www.bing.com/account/general'
|
|
language_aliases = {'zh-CN': 'zh-CHS', 'zh-TW': 'zh-CHT', 'zh-HK': 'zh-CHT'}
|
|
|
|
# search-url
|
|
base_url = 'https://www.bing.com/'
|
|
search_string = 'search?{query}&first={offset}'
|
|
|
|
|
|
def _get_offset_from_pageno(pageno):
|
|
return (pageno - 1) * 10 + 1
|
|
|
|
|
|
# do search-request
|
|
def request(query, params):
|
|
offset = _get_offset_from_pageno(params.get('pageno', 0))
|
|
|
|
if params['language'] == 'all':
|
|
lang = 'EN'
|
|
else:
|
|
lang = match_language(params['language'], supported_languages, language_aliases)
|
|
|
|
query = 'language:{} {}'.format(lang.split('-')[0].upper(), query)
|
|
|
|
search_path = search_string.format(
|
|
query=urlencode({'q': query}),
|
|
offset=offset)
|
|
|
|
params['url'] = base_url + search_path
|
|
|
|
return params
|
|
|
|
|
|
# get response from search-request
|
|
def response(resp):
|
|
results = []
|
|
result_len = 0
|
|
|
|
dom = html.fromstring(resp.text)
|
|
# parse results
|
|
for result in eval_xpath(dom, '//div[@class="sa_cc"]'):
|
|
link = eval_xpath(result, './/h3/a')[0]
|
|
url = link.attrib.get('href')
|
|
title = extract_text(link)
|
|
content = extract_text(eval_xpath(result, './/p'))
|
|
|
|
# append result
|
|
results.append({'url': url,
|
|
'title': title,
|
|
'content': content})
|
|
|
|
# parse results again if nothing is found yet
|
|
for result in eval_xpath(dom, '//li[@class="b_algo"]'):
|
|
link = eval_xpath(result, './/h2/a')[0]
|
|
url = link.attrib.get('href')
|
|
title = extract_text(link)
|
|
content = extract_text(eval_xpath(result, './/p'))
|
|
|
|
# append result
|
|
results.append({'url': url,
|
|
'title': title,
|
|
'content': content})
|
|
|
|
try:
|
|
result_len_container = "".join(eval_xpath(dom, '//span[@class="sb_count"]//text()'))
|
|
if "-" in result_len_container:
|
|
# Remove the part "from-to" for paginated request ...
|
|
result_len_container = result_len_container[result_len_container.find("-") * 2 + 2:]
|
|
|
|
result_len_container = re.sub('[^0-9]', '', result_len_container)
|
|
if len(result_len_container) > 0:
|
|
result_len = int(result_len_container)
|
|
except Exception as e:
|
|
logger.debug('result error :\n%s', e)
|
|
|
|
if result_len and _get_offset_from_pageno(resp.search_params.get("pageno", 0)) > result_len:
|
|
return []
|
|
|
|
results.append({'number_of_results': result_len})
|
|
return results
|
|
|
|
|
|
# get supported languages from their site
|
|
def _fetch_supported_languages(resp):
|
|
lang_tags = set()
|
|
|
|
setmkt = re.compile('setmkt=([^&]*)')
|
|
dom = html.fromstring(resp.text)
|
|
lang_links = eval_xpath(dom, "//li/a[contains(@href, 'setmkt')]")
|
|
|
|
for a in lang_links:
|
|
href = eval_xpath(a, './@href')[0]
|
|
match = setmkt.search(href)
|
|
l_tag = match.groups()[0]
|
|
_lang, _nation = l_tag.split('-', 1)
|
|
l_tag = _lang.lower() + '-' + _nation.upper()
|
|
lang_tags.add(l_tag)
|
|
|
|
return list(lang_tags)
|