Evernode setup installer. (#87)

src/util/util.cpp

@@ -279,6 +279,26 @@ namespace util
         return 0;
     }
 
+    /**
+     * Converts given string to a uint_64. A wrapper function for std::stoull. 
+     * @param str String variable.
+     * @param result Variable to store the answer from the conversion.
+     * @return Returns 0 in a successful conversion and -1 on error.
+    */
+    int stoull(const std::string &str, uint64_t &result)
+    {
+        try
+        {
+            result = std::stoull(str);
+        }
+        catch (const std::exception &e)
+        {
+            // Return -1 if any exceptions are captured.
+            return -1;
+        }
+        return 0;
+    }
+
     /**
      * Construct the user contract directory path when username is given.
      * @param username Username of the user.
@@ -404,7 +424,8 @@ namespace util
         {
             params.append(*itr);
             if (std::next(itr) != input_params.end())
-                params.append(" ");;
+                params.append(" ");
+            ;
         }
         const int len = 23 + (file_name.length() * 2) + params.length();
         char command[len];