searxng/searx/engines/bing.py

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"""
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
"""
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from lxml import html
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from searx.engines.xpath import extract_text
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from searx.url_utils import urlencode
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# engine dependent config
categories = ['general']
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paging = True
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language_support = True
supported_languages_url = 'https://www.bing.com/account/general'
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# search-url
base_url = 'https://www.bing.com/'
search_string = 'search?{query}&first={offset}'
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# do search-request
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def request(query, params):
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offset = (params['pageno'] - 1) * 10 + 1
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if params['language'] != 'all':
lang = params['language'].split('-')[0].upper()
else:
lang = 'EN'
query = u'language:{} {}'.format(lang, query.decode('utf-8')).encode('utf-8')
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search_path = search_string.format(
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query=urlencode({'q': query}),
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offset=offset)
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params['url'] = base_url + search_path
return params
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# get response from search-request
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def response(resp):
results = []
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dom = html.fromstring(resp.text)
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try:
results.append({'number_of_results': int(dom.xpath('//span[@class="sb_count"]/text()')[0]
.split()[0].replace(',', ''))})
except:
pass
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# parse results
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for result in dom.xpath('//div[@class="sa_cc"]'):
link = result.xpath('.//h3/a')[0]
url = link.attrib.get('href')
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title = extract_text(link)
content = extract_text(result.xpath('.//p'))
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# append result
results.append({'url': url,
'title': title,
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'content': content})
# parse results again if nothing is found yet
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for result in dom.xpath('//li[@class="b_algo"]'):
link = result.xpath('.//h2/a')[0]
url = link.attrib.get('href')
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title = extract_text(link)
content = extract_text(result.xpath('.//p'))
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# append result
results.append({'url': url,
'title': title,
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'content': content})
# return results
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return results
# get supported languages from their site
def _fetch_supported_languages(resp):
supported_languages = []
dom = html.fromstring(resp.text)
options = dom.xpath('//div[@id="limit-languages"]//input')
for option in options:
code = option.xpath('./@id')[0].replace('_', '-')
if code == 'nb':
code = 'no'
supported_languages.append(code)
return supported_languages