mirror of https://github.com/searxng/searxng.git
96 lines
2.7 KiB
Python
96 lines
2.7 KiB
Python
# WolframAlpha (Maths)
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#
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# @website http://www.wolframalpha.com/
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# @provide-api yes (http://api.wolframalpha.com/v2/)
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#
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# @using-api no
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# @results HTML
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# @stable no
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# @parse answer
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from cgi import escape
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from json import loads
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from time import time
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from urllib import urlencode
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from searx.poolrequests import get as http_get
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# search-url
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url = 'https://www.wolframalpha.com/'
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search_url = url + 'input/?{query}'
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search_url = url + 'input/json.jsp'\
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'?async=true'\
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'&banners=raw'\
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'&debuggingdata=false'\
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'&format=image,plaintext,imagemap,minput,moutput'\
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'&formattimeout=2'\
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'&{query}'\
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'&output=JSON'\
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'&parsetimeout=2'\
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'&proxycode={token}'\
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'&scantimeout=0.5'\
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'&sponsorcategories=true'\
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'&statemethod=deploybutton'
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# xpath variables
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scripts_xpath = '//script'
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title_xpath = '//title'
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failure_xpath = '//p[attribute::class="pfail"]'
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token = {'value': '',
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'last_updated': None}
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# seems, wolframalpha resets its token in every hour
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def obtain_token():
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update_time = time() - (time() % 3600)
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try:
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token_response = http_get('https://www.wolframalpha.com/input/api/v1/code?ts=9999999999999999999', timeout=2.0)
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token['value'] = loads(token_response.text)['code']
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token['last_updated'] = update_time
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except:
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pass
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return token
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obtain_token()
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# do search-request
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def request(query, params):
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# obtain token if last update was more than an hour
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if time() - token['last_updated'] > 3600:
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obtain_token()
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params['url'] = search_url.format(query=urlencode({'input': query}), token=token['value'])
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params['headers']['Referer'] = 'https://www.wolframalpha.com/input/?i=' + query
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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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resp_json = loads(resp.text)
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if not resp_json['queryresult']['success']:
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return []
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# TODO handle resp_json['queryresult']['assumptions']
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result_chunks = []
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for pod in resp_json['queryresult']['pods']:
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pod_title = pod.get('title', '')
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if 'subpods' not in pod:
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continue
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for subpod in pod['subpods']:
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if 'img' in subpod:
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result_chunks.append(u'<p>{0}<br /><img src="{1}" alt="{2}" /></p>'
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.format(escape(pod_title or subpod['img']['alt']),
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escape(subpod['img']['src']),
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escape(subpod['img']['alt'])))
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if not result_chunks:
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return []
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return [{'url': resp.request.headers['Referer'].decode('utf-8'),
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'title': 'Wolframalpha',
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'content': ''.join(result_chunks)}]
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