mirror of
https://github.com/searxng/searxng
synced 2024-01-01 18:24:07 +00:00
66 lines
1.6 KiB
Python
66 lines
1.6 KiB
Python
# Wolfram Alpha (Maths)
|
|
#
|
|
# @website http://www.wolframalpha.com
|
|
# @provide-api yes (http://api.wolframalpha.com/v2/)
|
|
#
|
|
# @using-api yes
|
|
# @results XML
|
|
# @stable yes
|
|
# @parse result
|
|
|
|
from urllib import urlencode
|
|
from lxml import etree
|
|
|
|
# search-url
|
|
base_url = 'http://api.wolframalpha.com/v2/query'
|
|
search_url = base_url + '?appid={api_key}&{query}&format=plaintext'
|
|
api_key = '' # defined in settings.yml
|
|
|
|
# xpath variables
|
|
failure_xpath = '/queryresult[attribute::success="false"]'
|
|
answer_xpath = '//pod[attribute::primary="true"]/subpod/plaintext'
|
|
|
|
|
|
# do search-request
|
|
def request(query, params):
|
|
params['url'] = search_url.format(query=urlencode({'input': query}),
|
|
api_key=api_key)
|
|
|
|
return params
|
|
|
|
|
|
# replace private user area characters to make text legible
|
|
def replace_pua_chars(text):
|
|
pua_chars = {u'\uf74c': 'd',
|
|
u'\uf74d': u'\u212f',
|
|
u'\uf74e': 'i',
|
|
u'\uf7d9': '='}
|
|
|
|
for k, v in pua_chars.iteritems():
|
|
text = text.replace(k, v)
|
|
|
|
return text
|
|
|
|
|
|
# get response from search-request
|
|
def response(resp):
|
|
results = []
|
|
|
|
search_results = etree.XML(resp.content)
|
|
|
|
# return empty array if there are no results
|
|
if search_results.xpath(failure_xpath):
|
|
return []
|
|
|
|
# parse answers
|
|
answers = search_results.xpath(answer_xpath)
|
|
if answers:
|
|
for answer in answers:
|
|
answer = replace_pua_chars(answer.text)
|
|
|
|
results.append({'answer': answer})
|
|
|
|
# TODO: append a result with title and link, like in the no api version
|
|
|
|
return results
|