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"""
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Duden
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@website https://www.duden.de
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@provide-api no
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@using-api no
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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, content
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"""
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from lxml import html, etree
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import re
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from searx.engines.xpath import extract_text
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from searx.utils import eval_xpath
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from searx.url_utils import quote, urljoin
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from searx import logger
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categories = ['general']
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paging = True
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language_support = False
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# search-url
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base_url = 'https://www.duden.de/'
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search_url = base_url + 'suchen/dudenonline/{query}?search_api_fulltext=&page={offset}'
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def request(query, params):
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'''pre-request callback
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params<dict>:
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method : POST/GET
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headers : {}
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data : {} # if method == POST
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url : ''
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category: 'search category'
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pageno : 1 # number of the requested page
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'''
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offset = (params['pageno'] - 1)
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if offset == 0:
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search_url_fmt = base_url + 'suchen/dudenonline/{query}'
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params['url'] = search_url_fmt.format(query=quote(query))
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else:
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params['url'] = search_url.format(offset=offset, query=quote(query))
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return params
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def response(resp):
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'''post-response callback
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resp: requests response object
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'''
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results = []
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dom = html.fromstring(resp.text)
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try:
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number_of_results_string =\
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re.sub('[^0-9]', '',
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eval_xpath(dom, '//a[@class="active" and contains(@href,"/suchen/dudenonline")]/span/text()')[0])
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results.append({'number_of_results': int(number_of_results_string)})
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except:
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logger.debug("Couldn't read number of results.")
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pass
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for result in eval_xpath(dom, '//section[not(contains(@class, "essay"))]'):
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try:
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url = eval_xpath(result, './/h2/a')[0].get('href')
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url = urljoin(base_url, url)
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title = eval_xpath(result, 'string(.//h2/a)').strip()
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content = extract_text(eval_xpath(result, './/p'))
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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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logger.debug('result parse error in:\n%s', etree.tostring(result, pretty_print=True))
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continue
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return results
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