[jboss-svn-commits] JBoss Common SVN: r3917 - jboss-stdio/trunk/src/main/java/org/jboss/stdio.

[jboss-svn-commits at lists.jboss.org]

Author: david.lloyd at jboss.com
Date: 2010-01-07 17:05:32 -0500 (Thu, 07 Jan 2010)
New Revision: 3917

Added:
   jboss-stdio/trunk/src/main/java/org/jboss/stdio/NullOutputStream.java
Modified:
   jboss-stdio/trunk/src/main/java/org/jboss/stdio/StdioContext.java
Log:
Add null outputstream, fix NPE

Added: jboss-stdio/trunk/src/main/java/org/jboss/stdio/NullOutputStream.java
===================================================================
--- jboss-stdio/trunk/src/main/java/org/jboss/stdio/NullOutputStream.java	                        (rev 0)
+++ jboss-stdio/trunk/src/main/java/org/jboss/stdio/NullOutputStream.java	2010-01-07 22:05:32 UTC (rev 3917)
@@ -0,0 +1,71 @@
+/*
+ * JBoss, Home of Professional Open Source.
+ * Copyright 2010, Red Hat Middleware LLC, and individual contributors
+ * as indicated by the @author tags. See the copyright.txt file in the
+ * distribution for a full listing of individual contributors.
+ *
+ * This is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * This software is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this software; if not, write to the Free
+ * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
+ */
+
+package org.jboss.stdio;
+
+import java.io.OutputStream;
+
+/**
+ * A null output stream, which ignores all output.
+ */
+public final class NullOutputStream extends OutputStream {
+
+    private static final NullOutputStream INSTANCE = new NullOutputStream();
+
+    /**
+     * Get the singleton instance.
+     *
+     * @return the instance
+     */
+    public static NullOutputStream getInstance() {
+        return INSTANCE;
+    }
+
+    /**
+     * Ignore the written byte.
+     *
+     * @param b ignored
+     */
+    public void write(final int b) {
+        // nothing
+    }
+
+    /**
+     * Ignore the written bytes.
+     *
+     * @param b ignored
+     */
+    public void write(final byte[] b) {
+        // nothing
+    }
+
+    /**
+     * Ignore the written bytes.
+     *
+     * @param b ignored
+     * @param off ignored
+     * @param len ignored
+     */
+    public void write(final byte[] b, final int off, final int len) {
+        // nothing
+    }
+}

Modified: jboss-stdio/trunk/src/main/java/org/jboss/stdio/StdioContext.java
===================================================================
--- jboss-stdio/trunk/src/main/java/org/jboss/stdio/StdioContext.java	2010-01-07 22:00:47 UTC (rev 3916)
+++ jboss-stdio/trunk/src/main/java/org/jboss/stdio/StdioContext.java	2010-01-07 22:05:32 UTC (rev 3917)
@@ -200,7 +200,7 @@
     private static abstract class DelegatingPrintStream extends PrintStream {
 
         protected DelegatingPrintStream() {
-            super((OutputStream) null);
+            super(NullOutputStream.getInstance());
         }
 
         abstract PrintStream getDelegate();