Add sort command

Author: hamidr

includes/async_redis/redis_client.hpp

@@ -38,6 +38,7 @@ namespace async_redis
     void decr(const string& field, reply_cb_t reply);
     void ping(reply_cb_t reply);
     void publish(const string& channel, const string& msg, reply_cb_t&& reply);
+    void sort(const string& hash_name, std::vector<string>&& fields, reply_cb_t&& reply);
 
     //TODO: wtf?! doesnt make sense with multiple connections!
     // void select(uint catalog, reply_cb_t&& reply) {

src/redis_client.cpp

@@ -69,6 +69,17 @@ void redis_client::publish(const string& channel, const string& msg, reply_cb_t&
   send({"publish", channel, msg}, reply);
 }
 
+void 
+redis_client::sort(const string& hash_name, std::vector<string>&& fields, reply_cb_t&& reply)
+{
+  std::string req;
+  for (auto &field : fields)
+    req += "get " + field + " ";
+
+  send({"sort " + hash_name + " by nosort",  req}, reply);
+}
+
+
 void redis_client::commit_pipeline() {
   string buffer;
   std::swap(pipeline_buffer_, buffer);