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[fix] rewrite Yahoo-News engine
Many things have been changed since last review of this engine. This patch fix xpath selectors, implements suggestion and is a complete review / rewrite of the engine. Signed-off-by: Markus Heiser <markus@darmarit.de>
This commit is contained in:
Markus Heiser
parent
0d8b369b5b
commit
d2faea423a
2 changed files with 78 additions and 70 deletions
1
Makefile
1
Makefile
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@ -196,6 +196,7 @@ PYLINT_FILES=\
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searx/engines/google_images.py \
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searx/engines/mediathekviewweb.py \
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searx/engines/google_scholar.py \
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searx/engines/yahoo_news.py \
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searx_extra/update/update_external_bangs.py
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test.pylint: pyenvinstall
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@ -1,16 +1,35 @@
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# SPDX-License-Identifier: AGPL-3.0-or-later
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"""
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Yahoo (News)
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"""Yahoo (News)
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Yahoo News is "English only" and do not offer localized nor language queries.
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"""
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# pylint: disable=invalid-name, missing-function-docstring
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import re
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from datetime import datetime, timedelta
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from urllib.parse import urlencode
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from lxml import html
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from searx.engines.yahoo import parse_url, language_aliases
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from searx.engines.yahoo import _fetch_supported_languages, supported_languages_url # NOQA # pylint: disable=unused-import
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from datetime import datetime, timedelta
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from dateutil import parser
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from searx.utils import extract_text, extract_url, match_language
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from lxml import html
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from searx import logger
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from searx.utils import (
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eval_xpath_list,
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eval_xpath_getindex,
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extract_text,
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)
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from searx.engines.yahoo import parse_url
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# pylint: disable=unused-import
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from searx.engines.yahoo import (
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_fetch_supported_languages,
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supported_languages_url,
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)
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# pylint: enable=unused-import
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logger = logger.getChild('yahoo_news engine')
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# about
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about = {
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@ -22,90 +41,78 @@ about = {
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"results": 'HTML',
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}
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# engine dependent config
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categories = ['news']
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language_support = False
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time_range_support = False
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safesearch = False
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paging = True
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categories = ['news']
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# search-url
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search_url = 'https://news.search.yahoo.com/search?{query}&b={offset}&{lang}=uh3_news_web_gs_1&pz=10&xargs=0&vl=lang_{lang}' # noqa
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search_url = (
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'https://news.search.yahoo.com/search'
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'?{query}&b={offset}'
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)
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# specific xpath variables
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results_xpath = '//ol[contains(@class,"searchCenterMiddle")]//li'
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url_xpath = './/h3/a/@href'
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title_xpath = './/h3/a'
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content_xpath = './/div[@class="compText"]'
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publishedDate_xpath = './/span[contains(@class,"tri")]'
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suggestion_xpath = '//div[contains(@class,"VerALSOTRY")]//a'
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AGO_RE = re.compile(r'([0-9]+)\s*(year|month|week|day|minute|hour)')
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AGO_TIMEDELTA = {
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'minute': timedelta(minutes=1),
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'hour': timedelta(hours=1),
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'day': timedelta(days=1),
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'week': timedelta(days=7),
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'month': timedelta(days=30),
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'year': timedelta(days=365),
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}
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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':
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language = 'en'
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else:
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language = match_language(params['language'], supported_languages, language_aliases).split('-')[0]
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params['url'] = search_url.format(offset=offset,
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query=urlencode({'p': query}),
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lang=language)
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# TODO required?
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params['cookies']['sB'] = '"v=1&vm=p&fl=1&vl=lang_{lang}&sh=1&pn=10&rw=new'\
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.format(lang=language)
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params['url'] = search_url.format(
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offset = offset,
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query = urlencode({'p': query})
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)
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logger.debug("query_url --> %s", params['url'])
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return params
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def sanitize_url(url):
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if ".yahoo.com/" in url:
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return re.sub("\\;\\_ylt\\=.+$", "", url)
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else:
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return url
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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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urls = result.xpath(url_xpath)
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if len(urls) != 1:
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for result in eval_xpath_list(dom, '//ol[contains(@class,"searchCenterMiddle")]//li'):
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url = eval_xpath_getindex(result, './/h4/a/@href', 0, None)
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if url is None:
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continue
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url = sanitize_url(parse_url(extract_url(urls, search_url)))
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title = extract_text(result.xpath(title_xpath)[0])
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content = extract_text(result.xpath(content_xpath)[0])
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url = parse_url(url)
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title = extract_text(result.xpath('.//h4/a'))
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content = extract_text(result.xpath('.//p'))
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img_src = eval_xpath_getindex(result, './/img/@data-src', 0, None)
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# parse publishedDate
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publishedDate = extract_text(result.xpath(publishedDate_xpath)[0])
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item = {
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'url': url,
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'title': title,
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'content': content,
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'img_src' : img_src
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}
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# still useful ?
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if re.match("^[0-9]+ minute(s|) ago$", publishedDate):
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publishedDate = datetime.now() - timedelta(minutes=int(re.match(r'\d+', publishedDate).group()))
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elif re.match("^[0-9]+ days? ago$", publishedDate):
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publishedDate = datetime.now() - timedelta(days=int(re.match(r'\d+', publishedDate).group()))
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elif re.match("^[0-9]+ hour(s|), [0-9]+ minute(s|) ago$", publishedDate):
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timeNumbers = re.findall(r'\d+', publishedDate)
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publishedDate = datetime.now()\
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- timedelta(hours=int(timeNumbers[0]))\
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- timedelta(minutes=int(timeNumbers[1]))
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pub_date = extract_text(result.xpath('.//span[contains(@class,"s-time")]'))
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ago = AGO_RE.search(pub_date)
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if ago:
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number = int(ago.group(1))
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delta = AGO_TIMEDELTA[ago.group(2)]
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pub_date = datetime.now() - delta * number
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else:
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try:
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publishedDate = parser.parse(publishedDate)
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except:
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publishedDate = datetime.now()
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pub_date = parser.parse(pub_date)
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except parser.ParserError:
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pub_date = None
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if publishedDate.year == 1900:
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publishedDate = publishedDate.replace(year=datetime.now().year)
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if pub_date is not None:
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item['publishedDate'] = pub_date
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results.append(item)
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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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'publishedDate': publishedDate})
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for suggestion in eval_xpath_list(dom, '//div[contains(@class,"AlsoTry")]//td'):
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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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