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# Google (Web)
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#
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# @website https://www.google.com
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# @provide-api yes (https://developers.google.com/custom-search/)
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#
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# @using-api no
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# @results HTML
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# @stable no (HTML can change)
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# @parse url, title, content, suggestion
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from urllib import urlencode
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from urlparse import urlparse, parse_qsl
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from lxml import html
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from searx.poolrequests import get
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from searx.engines.xpath import extract_text, extract_url
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# engine dependent config
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categories = ['general']
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paging = True
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language_support = True
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# search-url
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google_hostname = 'www.google.com'
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search_path = '/search'
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redirect_path = '/url'
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images_path = '/images'
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search_url = ('https://' +
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google_hostname +
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search_path +
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'?{query}&start={offset}&gbv=1')
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# specific xpath variables
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results_xpath = '//li[@class="g"]'
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url_xpath = './/h3/a/@href'
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title_xpath = './/h3'
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content_xpath = './/span[@class="st"]'
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suggestion_xpath = '//p[@class="_Bmc"]'
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images_xpath = './/div/a'
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image_url_xpath = './@href'
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image_img_src_xpath = './img/@src'
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pref_cookie = ''
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# see https://support.google.com/websearch/answer/873?hl=en
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def get_google_pref_cookie():
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global pref_cookie
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if pref_cookie == '':
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resp = get('https://www.google.com/ncr', allow_redirects=False)
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pref_cookie = resp.cookies["PREF"]
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return pref_cookie
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# remove google-specific tracking-url
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def parse_url(url_string):
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parsed_url = urlparse(url_string)
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if (parsed_url.netloc in [google_hostname, '']
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and parsed_url.path == redirect_path):
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query = dict(parse_qsl(parsed_url.query))
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return query['q']
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else:
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return url_string
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# do search-request
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def request(query, params):
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offset = (params['pageno'] - 1) * 10
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if params['language'] == 'all':
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language = 'en'
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else:
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language = params['language'].replace('_', '-').lower()
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params['url'] = search_url.format(offset=offset,
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query=urlencode({'q': query}))
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params['headers']['Accept-Language'] = language
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params['cookies']['PREF'] = get_google_pref_cookie()
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return params
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# get response from search-request
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def response(resp):
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results = []
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dom = html.fromstring(resp.text)
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# parse results
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for result in dom.xpath(results_xpath):
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title = extract_text(result.xpath(title_xpath)[0])
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try:
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url = parse_url(extract_url(result.xpath(url_xpath), search_url))
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parsed_url = urlparse(url)
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if (parsed_url.netloc == google_hostname
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and parsed_url.path == search_path):
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# remove the link to google news
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continue
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# images result
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if (parsed_url.netloc == google_hostname
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and parsed_url.path == images_path):
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# only thumbnail image provided,
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# so skipping image results
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# results = results + parse_images(result)
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pass
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else:
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# normal result
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content = extract_text(result.xpath(content_xpath)[0])
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# append result
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results.append({'url': url,
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'title': title,
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'content': content})
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except:
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continue
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# parse suggestion
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for suggestion in dom.xpath(suggestion_xpath):
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# append suggestion
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results.append({'suggestion': extract_text(suggestion)})
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# return results
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return results
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def parse_images(result):
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results = []
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for image in result.xpath(images_xpath):
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url = parse_url(extract_text(image.xpath(image_url_xpath)[0]))
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img_src = extract_text(image.xpath(image_img_src_xpath)[0])
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# append result
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results.append({'url': url,
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'title': '',
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'content': '',
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'img_src': img_src,
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'template': 'images.html'})
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return results
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