1 files changed, 136 insertions, 0 deletions
diff --git a/searx/engines/json_engine.py b/searx/engines/json_engine.py
new file mode 100644
index 000000000..785b0c490
--- /dev/null
+++ b/searx/engines/json_engine.py
@@ -0,0 +1,136 @@
+from collections import Iterable
+from json import loads
+from sys import version_info
+from searx.url_utils import urlencode
+from searx.utils import to_string
+
+if version_info[0] == 3:
+    unicode = str
+
+search_url = None
+url_query = None
+content_query = None
+title_query = None
+paging = False
+suggestion_query = ''
+results_query = ''
+
+# parameters for engines with paging support
+#
+# number of results on each page
+# (only needed if the site requires not a page number, but an offset)
+page_size = 1
+# number of the first page (usually 0 or 1)
+first_page_num = 1
+
+
+def iterate(iterable):
+    if type(iterable) == dict:
+        it = iterable.items()
+
+    else:
+        it = enumerate(iterable)
+    for index, value in it:
+        yield str(index), value
+
+
+def is_iterable(obj):
+    if type(obj) == str:
+        return False
+    if type(obj) == unicode:
+        return False
+    return isinstance(obj, Iterable)
+
+
+def parse(query):
+    q = []
+    for part in query.split('/'):
+        if part == '':
+            continue
+        else:
+            q.append(part)
+    return q
+
+
+def do_query(data, q):
+    ret = []
+    if not q:
+        return ret
+
+    qkey = q[0]
+
+    for key, value in iterate(data):
+
+        if len(q) == 1:
+            if key == qkey:
+                ret.append(value)
+            elif is_iterable(value):
+                ret.extend(do_query(value, q))
+        else:
+            if not is_iterable(value):
+                continue
+            if key == qkey:
+                ret.extend(do_query(value, q[1:]))
+            else:
+                ret.extend(do_query(value, q))
+    return ret
+
+
+def query(data, query_string):
+    q = parse(query_string)
+
+    return do_query(data, q)
+
+
+def request(query, params):
+    query = urlencode({'q': query})[2:]
+
+    fp = {'query': query}
+    if paging and search_url.find('{pageno}') >= 0:
+        fp['pageno'] = (params['pageno'] - 1) * page_size + first_page_num
+
+    params['url'] = search_url.format(**fp)
+    params['query'] = query
+
+    return params
+
+
+def response(resp):
+    results = []
+    json = loads(resp.text)
+    if results_query:
+        rs = query(json, results_query)
+        if not len(rs):
+            return results
+        for result in rs[0]:
+            try:
+                url = query(result, url_query)[0]
+                title = query(result, title_query)[0]
+            except:
+                continue
+            try:
+                content = query(result, content_query)[0]
+            except:
+                content = ""
+            results.append({
+                'url': to_string(url),
+                'title': to_string(title),
+                'content': to_string(content),
+            })
+    else:
+        for url, title, content in zip(
+            query(json, url_query),
+            query(json, title_query),
+            query(json, content_query)
+        ):
+            results.append({
+                'url': to_string(url),
+                'title': to_string(title),
+                'content': to_string(content),
+            })
+
+    if not suggestion_query:
+        return results
+    for suggestion in query(json, suggestion_query):
+        results.append({'suggestion': suggestion})
+    return results