aoqi@0: /*
aoqi@0:  * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  */
aoqi@0: 
aoqi@0: package p;
aoqi@0: 
aoqi@0: import java.io.*;
aoqi@0: import com.sun.tools.javadoc.Main;
aoqi@0: 
aoqi@0: public class OutputRedirect {
aoqi@0: 
aoqi@0:     public static void main(String[] args) {
aoqi@0:         PrintStream originalOutput = System.out;
aoqi@0:         try {
aoqi@0:             doTest();
aoqi@0:         } finally {
aoqi@0:             // restore things
aoqi@0:             System.setOut(originalOutput);
aoqi@0:         }
aoqi@0:     }
aoqi@0: 
aoqi@0:     static void doTest() {
aoqi@0:         ByteArrayOutputStream redirectedOutput = new ByteArrayOutputStream();
aoqi@0:         PrintStream originalOutput = System.out;
aoqi@0: 
aoqi@0:         // redirect System.out to a buffer
aoqi@0:         System.setOut(new PrintStream(redirectedOutput));
aoqi@0: 
aoqi@0:         PrintWriter sink = new PrintWriter(new ByteArrayOutputStream());
aoqi@0: 
aoqi@0:         // execute javadoc
aoqi@0:         int result = Main.execute("javadoc", sink, sink, sink,
aoqi@0:                                   "com.sun.tools.doclets.standard.Standard",
aoqi@0:                                   new String[] {"p"}
aoqi@0:                                   );
aoqi@0: 
aoqi@0: 
aoqi@0:         // test whether javadoc did any output to System.out
aoqi@0:         if (redirectedOutput.toByteArray().length > 0) {
aoqi@0:             originalOutput.println("Test failed; here's what javadoc wrote on its standard output:");
aoqi@0:             originalOutput.println(redirectedOutput.toString());
aoqi@0:             throw new Error("javadoc output wasn\'t properly redirected");
aoqi@0:         } else if (result != 0) {
aoqi@0:             throw new Error("javadoc run failed");
aoqi@0:         } else {
aoqi@0:             originalOutput.println("OK, good");
aoqi@0:         }
aoqi@0:     }
aoqi@0: }