From 1bbd52a234462a49a3ad4db40428d8f6ec223663 Mon Sep 17 00:00:00 2001
From: Mathieu Maret <mathieu.maret@gmail.com>
Date: Fri, 8 Apr 2016 01:03:57 +0200
Subject: [PATCH] Add MQTT generic publisher function

---
 WifiControlSensor/MQTT.ino | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/WifiControlSensor/MQTT.ino b/WifiControlSensor/MQTT.ino
index 5605054..a00998b 100644
--- a/WifiControlSensor/MQTT.ino
+++ b/WifiControlSensor/MQTT.ino
@@ -1,3 +1,4 @@
+#include <stdarg.h>
 // Create an ESP8266 WiFiClient class to connect to the MQTT server.
 WiFiClient client;
 Adafruit_MQTT_Client *mqtt;
@@ -62,6 +63,16 @@ int MqttSetup(char *server, char *user, char *passwd, int port, char * hostname)
   return 0;
 }
 
+Adafruit_MQTT_Publish *MqttCreatePublisher(const char *fmt, ...){
+  char buf[128];
+  va_list args;
+  va_start (args, fmt);
+  vsnprintf(buf, sizeof(buf), (const char *)fmt, args);
+  va_end(args);
+  String *url = new String(buf);
+  return new Adafruit_MQTT_Publish(mqtt, url->c_str());
+}
+
 bool MqttIsConfigured() {
   return isMqttConfigured;
 }