Wolfie kinda works using API

1 files changed, 70 insertions, 0 deletions

diff --git a/searx/engines/wolframalpha_api.py b/searx/engines/wolframalpha_api.py
new file mode 100644
index 000000000..1cf908b62
--- /dev/null
+++ b/searx/engines/wolframalpha_api.py
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+# 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
+from searx.engines.xpath import extract_text
+from searx.utils import html_to_text
+
+# search-url
+base_url = 'http://api.wolframalpha.com/v2/query'
+search_url = base_url + '?appid={api_key}&{query}&format=plaintext'
+site_url = 'http://wolframalpha.com/input/?{query}'
+
+#embedded_url = '<iframe width="540" height="304" ' +\
+#    'data-src="//www.youtube-nocookie.com/embed/{videoid}" ' +\
+#    'frameborder="0" allowfullscreen></iframe>'
+
+# do search-request
+def request(query, params):
+    params['url'] = search_url.format(query=urlencode({'input': query}),
+                                      api_key=api_key)
+
+    # need this for url in response
+    global my_query
+    my_query = query
+
+    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('/queryresult[attribute::success="false"]'):
+        return []
+
+    # parse result
+    result = search_results.xpath('//pod[attribute::primary="true"]/subpod/plaintext')[0].text
+    result = replace_pua_chars(result)
+
+    # bind url from site
+    result_url = site_url.format(query=urlencode({'i': my_query}))
+
+    # append result
+    results.append({'url': result_url,
+                    'title': result})
+
+    # return results
+    return results