[enh] add blekko_images engine

searx/engines/blekko_images.py

@@ -0,0 +1,56 @@
+## Blekko (Images)
+#
+# @website     https://blekko.com
+# @provide-api yes (inofficial)
+#
+# @using-api   yes
+# @results     JSON
+# @stable      yes
+# @parse       url, title, img_src
+
+from json import loads
+from urllib import urlencode
+
+# engine dependent config
+categories = ['images']
+paging = True
+
+# search-url
+base_url = 'https://blekko.com'
+search_url = '/api/images?{query}&c={c}'
+
+
+# do search-request
+def request(query, params):
+    c = (params['pageno'] - 1) * 48
+
+    params['url'] = base_url +\
+        search_url.format(query=urlencode({'q': query}),
+                          c=c)
+
+    if params['pageno'] != 1:
+        params['url'] += '&page={pageno}'.format(pageno=(params['pageno']-1))
+
+    return params
+
+
+# get response from search-request
+def response(resp):
+    results = []
+
+    search_results = loads(resp.text)
+
+    # return empty array if there are no results
+    if not search_results:
+        return []
+
+    for result in search_results:
+        # append result
+        results.append({'url': result['page_url'],
+                        'title': result['title'],
+                        'content': '',
+                        'img_src': result['url'],
+                        'template': 'images.html'})
+
+    # return results
+    return results