Add toString() function for SensorId

DCDBLib/include/sensorid.h

@@ -104,6 +104,13 @@ public:
    */
   std::string serialize() const;
 
+  /**
+   * @brief This function returns a hex string which corresponds to the
+   * 		supplied SensorId object.
+   * @return      Returns a human-readable hex string of the SensorId.
+   */
+  std::string toString() const;
+
   /**
    * @brief This function matches the sensor against a
    *        sensor pattern string.

DCDBLib/src/sensorid.cpp

@@ -28,6 +28,7 @@
 #include <algorithm>
 #include <cstdint>
 #include <cinttypes>
+#include <cstdio>
 
 #include <boost/algorithm/string.hpp>
 
@@ -150,6 +151,18 @@ std::string SensorId::serialize() const
     return std::string((char*)ll, 16);
 }
 
+/**
+ * @details
+ * This function returns a hex representation of a SensorId as a
+ * 32-character std::string.
+ */
+std::string SensorId::toString() const
+{
+	char buf[33];
+	snprintf(buf, sizeof(buf), "%016lx%016lx", data.raw[0], data.raw[1]);
+	return std::string(buf);
+}
+
 /**
  * @details
  * This function strips all slashes from the pattern string and