Added property for GenericIllegalRegexp to customize reported message.

(module GenericIllegalRegexp, property message, request 738567)

docs/config_misc.html

@@ -72,6 +72,13 @@
           <td><a href="property_types.html#regexp">regular expression</a></td>
           <td><span class="default">^$</span> (empty)</td>
         </tr>
+        <tr>
+          <td>message</td>
+          <td>message which is used to notify about violations, 
+          if empty then default(hard-codded) message is used.</td>
+          <td><a href="property_types.html#String">String</a></td>
+          <td><span class="default">&quot;&quot;</span>(empty)</td>
+        </tr>
       </table>
       <h4>Examples</h4>
       <p class="body">

docs/releasenotes.html

@@ -132,6 +132,10 @@
           <li class="body">Added check for redundant exceptions in 
           throws clause (module RedundantThrows, request 579056)</li>
 
+          <li class="body">Added property for GenericIllegalRegexp to
+          customize reported message (module GenericIllegalRegexp, 
+          property message, request 738567)</li>
+
         </ul>
 
       <p class="body">

src/checkstyle/com/puppycrawl/tools/checkstyle/checks/GenericIllegalRegexpCheck.java

@@ -42,6 +42,26 @@ import com.puppycrawl.tools.checkstyle.api.DetailAST;
  */
 public class GenericIllegalRegexpCheck extends AbstractFormatCheck
 {
+    /**
+     * Custom message for report if illegal regexp found
+     * ignored if empty.
+     */
+    private String mMessage = "";
+
+    /**
+     * Setter for message property
+     * @param aMessage custom message which should be used
+     *                 to report about violations.
+     */
+
+    public void setMessage(String aMessage)
+    {
+        if (aMessage == null) {
+            aMessage = "";
+        }
+        mMessage = aMessage;
+    }
+
     /**
      * Instantiates an new GenericIllegalRegexpCheck.
      */
@@ -64,7 +84,12 @@ public class GenericIllegalRegexpCheck extends AbstractFormatCheck
 
             final String line = lines[i];
             if (getRegexp().match(line)) {
-                log(i + 1, "illegal.regexp", getFormat());
+                if ("".equals(mMessage)) {
+                    log(i + 1, "illegal.regexp", getFormat());
+                }
+                else {
+                    log(i + 1, mMessage);
+                }
             }
         }
     }

src/tests/com/puppycrawl/tools/checkstyle/checks/GenericIllegalRegexpCheckTest.java

@@ -18,4 +18,19 @@ public class GenericIllegalRegexpCheckTest
         };
         verify(checkConfig, getPath("InputSemantic.java"), expected);
     }
+
+    public void testMessageProperty()
+        throws Exception
+    {
+        final String illegal = "System\\.(out)|(err)\\.print(ln)?\\(";
+        final String message = "Bad line :(";
+        final DefaultConfiguration checkConfig =
+            createCheckConfig(GenericIllegalRegexpCheck.class);
+        checkConfig.addAttribute("format", illegal);
+        checkConfig.addAttribute("message", message);
+        final String[] expected = {
+            "69: " + message,
+        };
+        verify(checkConfig, getPath("InputSemantic.java"), expected);
+    }
 }