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	The language_support variable is set to True by default, and set to False in only 5 engines. Except the documentation and the /config URL, this variable is not used. This commit remove the variable definition in the engines, and set value according to supported_languages length: False when the length is 0, True otherwise. Close #2485
		
			
				
	
	
		
			132 lines
		
	
	
		
			4.2 KiB
		
	
	
	
		
			Python
		
	
	
	
	
	
			
		
		
	
	
			132 lines
		
	
	
		
			4.2 KiB
		
	
	
	
		
			Python
		
	
	
	
	
	
# SPDX-License-Identifier: AGPL-3.0-or-later
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"""
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 Bing (News)
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"""
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from datetime import datetime
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from dateutil import parser
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from urllib.parse import urlencode, urlparse, parse_qsl
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from lxml import etree
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from lxml.etree import XPath
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from searx.utils import match_language, eval_xpath_getindex
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from searx.engines.bing import language_aliases
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from searx.engines.bing import _fetch_supported_languages, supported_languages_url  # NOQA # pylint: disable=unused-import
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# about
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about = {
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    "website": 'https://www.bing.com/news',
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    "wikidata_id": 'Q2878637',
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    "official_api_documentation": 'https://www.microsoft.com/en-us/bing/apis/bing-news-search-api',
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    "use_official_api": False,
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    "require_api_key": False,
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    "results": 'RSS',
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}
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# engine dependent config
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categories = ['news']
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paging = True
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time_range_support = True
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# search-url
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base_url = 'https://www.bing.com/'
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search_string = 'news/search?{query}&first={offset}&format=RSS'
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search_string_with_time = 'news/search?{query}&first={offset}&qft=interval%3d"{interval}"&format=RSS'
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time_range_dict = {'day': '7',
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                   'week': '8',
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                   'month': '9'}
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# remove click
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def url_cleanup(url_string):
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    parsed_url = urlparse(url_string)
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    if parsed_url.netloc == 'www.bing.com' and parsed_url.path == '/news/apiclick.aspx':
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        query = dict(parse_qsl(parsed_url.query))
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        return query.get('url', None)
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    return url_string
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# replace the http://*bing4.com/th?id=... by https://www.bing.com/th?id=...
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def image_url_cleanup(url_string):
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    parsed_url = urlparse(url_string)
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    if parsed_url.netloc.endswith('bing4.com') and parsed_url.path == '/th':
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        query = dict(parse_qsl(parsed_url.query))
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        return "https://www.bing.com/th?id=" + query.get('id')
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    return url_string
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def _get_url(query, language, offset, time_range):
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    if time_range in time_range_dict:
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        search_path = search_string_with_time.format(
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            query=urlencode({'q': query, 'setmkt': language}),
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            offset=offset,
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            interval=time_range_dict[time_range])
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    else:
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        # e.g. setmkt=de-de&setlang=de
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        search_path = search_string.format(
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            query=urlencode({'q': query, 'setmkt': language}),
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            offset=offset)
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    return base_url + search_path
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# do search-request
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def request(query, params):
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    if params['time_range'] and params['time_range'] not in time_range_dict:
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        return params
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    offset = (params['pageno'] - 1) * 10 + 1
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    if params['language'] == 'all':
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        language = 'en-US'
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    else:
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        language = match_language(params['language'], supported_languages, language_aliases)
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    params['url'] = _get_url(query, language, offset, 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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    rss = etree.fromstring(resp.content)
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    ns = rss.nsmap
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    # parse results
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    for item in rss.xpath('./channel/item'):
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        # url / title / content
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        url = url_cleanup(eval_xpath_getindex(item, './link/text()', 0, default=None))
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        title = eval_xpath_getindex(item, './title/text()', 0, default=url)
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        content = eval_xpath_getindex(item, './description/text()', 0, default='')
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        # publishedDate
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        publishedDate = eval_xpath_getindex(item, './pubDate/text()', 0, default=None)
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        try:
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            publishedDate = parser.parse(publishedDate, dayfirst=False)
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        except TypeError:
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            publishedDate = datetime.now()
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        except ValueError:
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            publishedDate = datetime.now()
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        # thumbnail
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        thumbnail = eval_xpath_getindex(item, XPath('./News:Image/text()', namespaces=ns), 0, default=None)
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        if thumbnail is not None:
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            thumbnail = image_url_cleanup(thumbnail)
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        # append result
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        if thumbnail is not None:
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            results.append({'url': url,
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                            'title': title,
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                            'publishedDate': publishedDate,
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                            'content': content,
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                            'img_src': thumbnail})
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        else:
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            results.append({'url': url,
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                            'title': title,
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                            'publishedDate': publishedDate,
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                            'content': content})
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    # return results
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    return results
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