Sign the generated code with the Fast DDS-Gen version (#458)

Signed-off-by: Denisa <[email protected]>
(cherry picked from commit a2ff4a4)

Author: depink5

src/main/java/com/eprosima/fastdds/idl/grammar/Context.java

@@ -34,6 +34,8 @@
 import com.eprosima.idl.parser.typecode.TypeCode;
 import com.eprosima.idl.parser.typecode.Member;
 import com.eprosima.idl.parser.typecode.MemberedTypeCode;
+import com.eprosima.log.ColorMessage;
+import java.io.InputStream;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Map.Entry;
@@ -340,6 +342,25 @@ public String getProduct()
         return "fastdds";
     }
 
+    public String getVersion()
+    {
+        try
+        {
+            InputStream input = this.getClass().getClassLoader().getResourceAsStream("version");
+            byte[] b = new byte[input.available()];
+            input.read(b);
+            String text = new String(b);
+            int beginindex = text.indexOf("=");
+            return text.substring(beginindex + 1).trim();
+        }
+        catch (Exception ex)
+        {
+            System.out.println(ColorMessage.error() + "Getting version. " + ex.getMessage());
+        }
+
+        return "";
+    }
+
     public String getNamespace()
     {
         return "fastcdr";

src/main/java/com/eprosima/fastdds/idl/templates/eprosima.stg

@@ -33,7 +33,7 @@ fileHeader(ctx, file, description) ::= <<
  * @file $file$
  * $description$
  *
- * This file was generated by the tool $ctx.product$gen.
+ * This file was generated by the tool $ctx.product$gen (version: $ctx.version$).
  */
 >>