mirror of
https://github.com/searxng/searxng.git
synced 2025-10-31 02:27:06 -04:00
123 lines
3.6 KiB
Python
123 lines
3.6 KiB
Python
"""
|
|
Bing (Web)
|
|
|
|
@website https://www.bing.com
|
|
@provide-api yes (http://datamarket.azure.com/dataset/bing/search),
|
|
max. 5000 query/month
|
|
|
|
@using-api no (because of query limit)
|
|
@results HTML (using search portal)
|
|
@stable no (HTML can change)
|
|
@parse url, title, content
|
|
|
|
@todo publishedDate
|
|
"""
|
|
|
|
import re
|
|
from lxml import html
|
|
from searx import logger, utils
|
|
from searx.engines.xpath import extract_text
|
|
from searx.url_utils import urlencode
|
|
from searx.utils import match_language, gen_useragent, eval_xpath
|
|
|
|
logger = logger.getChild('bing engine')
|
|
|
|
# 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 = u'language:{} {}'.format(lang.split('-')[0].upper(), query.decode('utf-8')).encode('utf-8')
|
|
|
|
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)
|
|
pass
|
|
|
|
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):
|
|
supported_languages = []
|
|
dom = html.fromstring(resp.text)
|
|
options = eval_xpath(dom, '//div[@id="limit-languages"]//input')
|
|
for option in options:
|
|
code = eval_xpath(option, './@id')[0].replace('_', '-')
|
|
if code == 'nb':
|
|
code = 'no'
|
|
supported_languages.append(code)
|
|
|
|
return supported_languages
|