Merge remote-tracking branch 'origin/1047_Hosting_Game' into Story62_Reading_Keystrokes

src/main/java/seng302/server/messages/Message.java

@@ -194,6 +194,25 @@ public abstract class Message {
         return data;
     }
 
+    /**
+     * takes an array of up to 7 bytes in little endian format and
+     * returns a positive long constructed from the input bytes
+     *
+     * @return a positive long if there is less than 8 bytes -1 otherwise
+     */
+    public static long bytesToLong(byte[] bytes){
+        long partialLong = 0;
+        int index = 0;
+        for (byte b: bytes){
+            if (index > 6){
+                return -1;
+            }
+            partialLong = partialLong | (b & 0xFFL) << (index * 8);
+            index++;
+        }
+        return partialLong;
+    }
+
     /**
      * Reverse an array of bytes
      * @param data The byte[] to reverse
@@ -205,4 +224,5 @@ public abstract class Message {
             data[right] = (byte) (temp & 0xff);
         }
     }
+
 }