[enh] engine types

searx/engines/duckduckgo.py

@@ -1,14 +1,19 @@
-from lxml import html
+from json import loads
 
 
 def request(query, params):
-    params['method']    = 'POST'
-    params['url']       = 'https://duckduckgo.com/html'
-    params['data']['q'] = query
+    params['url'] = 'https://duckduckgo.com/d.js?q=%s&l=us-en&p=1&s=0' % query
     return params
 
 
 def response(resp):
-    dom = html.fromstring(resp.text)
-    results = dom.xpath('//div[@class="results_links results_links_deep web-result"]')
-    return [html.tostring(x) for x in results]
+    results = []
+    search_res = loads(resp.text[resp.text.find('[{'):-2])[:-1]
+    for r in search_res:
+        if not r.get('t'):
+            continue
+        results.append({'title': r['t']
+                       ,'content': r['a']
+                       ,'url': r['u']
+                       })
+    return results