forked from zaclys/searxng
147 lines
4.1 KiB
Python
147 lines
4.1 KiB
Python
"""
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Bing (Images)
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@website https://www.bing.com/images
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@provide-api yes (http://datamarket.azure.com/dataset/bing/search),
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max. 5000 query/month
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@using-api no (because of query limit)
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@results HTML (using search portal)
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@stable no (HTML can change)
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@parse url, title, img_src
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@todo currently there are up to 35 images receive per page,
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because bing does not parse count=10.
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limited response to 10 images
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"""
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from lxml import html
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from json import loads
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import re
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from searx.url_utils import urlencode
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# engine dependent config
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categories = ['images']
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paging = True
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safesearch = True
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time_range_support = True
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language_support = True
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supported_languages_url = 'https://www.bing.com/account/general'
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# search-url
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base_url = 'https://www.bing.com/'
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search_string = 'images/search?{query}&count=10&first={offset}'
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time_range_string = '&qft=+filterui:age-lt{interval}'
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time_range_dict = {'day': '1440',
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'week': '10080',
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'month': '43200',
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'year': '525600'}
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# safesearch definitions
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safesearch_types = {2: 'STRICT',
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1: 'DEMOTE',
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0: 'OFF'}
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_quote_keys_regex = re.compile('({|,)([a-z][a-z0-9]*):(")', re.I | re.U)
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# get supported region code
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def get_region_code(lang, lang_list=None):
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region = None
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if lang in (lang_list or supported_languages):
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region = lang
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elif lang.startswith('no'):
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region = 'nb-NO'
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else:
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# try to get a supported country code with language
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lang = lang.split('-')[0]
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for lc in (lang_list or supported_languages):
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if lang == lc.split('-')[0]:
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region = lc
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break
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if region:
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return region.lower()
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else:
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return 'en-us'
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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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search_path = search_string.format(
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query=urlencode({'q': query}),
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offset=offset)
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language = get_region_code(params['language'])
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params['cookies']['SRCHHPGUSR'] = \
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'ADLT=' + safesearch_types.get(params['safesearch'], 'DEMOTE')
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params['cookies']['_EDGE_S'] = 'mkt=' + language +\
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'&ui=' + language + '&F=1'
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params['url'] = base_url + search_path
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if params['time_range'] in time_range_dict:
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params['url'] += time_range_string.format(interval=time_range_dict[params['time_range']])
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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('//div[@id="mmComponent_images_1"]/ul/li/div/div[@class="imgpt"]'):
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link = result.xpath('./a')[0]
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# TODO find actual title
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title = link.xpath('.//img/@alt')[0]
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# parse json-data (it is required to add a space, to make it parsable)
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json_data = loads(_quote_keys_regex.sub(r'\1"\2": \3', link.attrib.get('m')))
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url = json_data.get('purl')
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img_src = json_data.get('murl')
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thumb_json_data = loads(_quote_keys_regex.sub(r'\1"\2": \3', link.attrib.get('mad')))
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thumbnail = thumb_json_data.get('turl')
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# append result
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results.append({'template': 'images.html',
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'url': url,
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'title': title,
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'content': '',
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'thumbnail_src': thumbnail,
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'img_src': img_src})
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# TODO stop parsing if 10 images are found
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# if len(results) >= 10:
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# break
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# return results
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return results
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# get supported languages from their site
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def _fetch_supported_languages(resp):
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supported_languages = []
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dom = html.fromstring(resp.text)
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regions_xpath = '//div[@id="region-section-content"]' \
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+ '//ul[@class="b_vList"]/li/a/@href'
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regions = dom.xpath(regions_xpath)
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for region in regions:
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code = re.search('setmkt=[^\&]+', region).group()[7:]
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if code == 'nb-NO':
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code = 'no-NO'
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supported_languages.append(code)
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return supported_languages
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