ProcessHandler.java

/*
 *
 *  * RHQ Management Platform
 *  * Copyright (C) 2005-2012 Red Hat, Inc.
 *  * All rights reserved.
 *  *
 *  * This program is free software; you can redistribute it and/or modify
 *  * it under the terms of the GNU General Public License, version 2, as
 *  * published by the Free Software Foundation, and/or the GNU Lesser
 *  * General Public License, version 2.1, also as published by the Free
 *  * Software Foundation.
 *  *
 *  * This program 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 General Public License and the GNU Lesser General Public License
 *  * for more details.
 *  *
 *  * You should have received a copy of the GNU General Public License
 *  * and the GNU Lesser General Public License along with this program;
 *  * if not, write to the Free Software Foundation, Inc.,
 *  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 */

package org.rhq.server.control;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.util.Scanner;

/**
 * @author John Sanda
 */
public class ProcessHandler {

    public static void main(String[] args) throws Exception {
        Scanner scanner = new Scanner(System.in);
        Process process = new ProcessBuilder("/usr/local/bin/rhino").start();

        OutputStream stdin = process.getOutputStream ();
        InputStream stderr = process.getErrorStream ();
        InputStream stdout = process.getInputStream ();

        BufferedReader reader = new BufferedReader (new InputStreamReader(stdout));
        BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(stdin));

        writer.write("help");

        while (scanner.hasNext()) {
            String input = scanner.nextLine();
            writer.write(input);
            if (input.equals("quit()")) {
                break;
            }
            writer.flush();

            String line = reader.readLine();
            while (line != null && !line.trim().equals("QUIT")) {
                line = reader.readLine();
                System.out.println(line);
            }
            if (line == null) {
                break;
            }
        }
    }

}