Java example source code file (RawCommandLineLauncher.java)

This example Java source code file (RawCommandLineLauncher.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

arg_address, arg_command, arg_quote, classnotfoundexception, illegalconnectorargumentsexception, invalid, ioexception, jdi, rawcommandlinelauncher, sockettransportservice, string, transport, transportservice, util, virtualmachine, vmstartexception

The RawCommandLineLauncher.java Java example source code

/*
 * Copyright (c) 1999, 2011, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code 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
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package com.sun.tools.jdi;

import com.sun.tools.jdi.*;
import com.sun.jdi.connect.*;
import com.sun.jdi.connect.spi.*;
import com.sun.jdi.VirtualMachine;
import java.util.Map;
import java.io.IOException;

public class RawCommandLineLauncher extends AbstractLauncher implements LaunchingConnector {

    static private final String ARG_COMMAND = "command";
    static private final String ARG_ADDRESS = "address";
    static private final String ARG_QUOTE   = "quote";

    TransportService transportService;
    Transport transport;

    public TransportService transportService() {
        return transportService;
    }

    public Transport transport() {
        return transport;
    }

    public RawCommandLineLauncher() {
        super();

        try {
            Class<?> c = Class.forName("com.sun.tools.jdi.SharedMemoryTransportService");
            transportService = (TransportService)c.newInstance();
            transport = new Transport() {
                public String name() {
                    return "dt_shmem";
                }
            };
        } catch (ClassNotFoundException x) {
        } catch (UnsatisfiedLinkError x) {
        } catch (InstantiationException x) {
        } catch (IllegalAccessException x) {
        };

        if (transportService == null) {
            transportService = new SocketTransportService();
            transport = new Transport() {
                public String name() {
                    return "dt_socket";
                }
            };
        }

        addStringArgument(
                ARG_COMMAND,
                getString("raw.command.label"),
                getString("raw.command"),
                "",
                true);
        addStringArgument(
                ARG_QUOTE,
                getString("raw.quote.label"),
                getString("raw.quote"),
                "\"",
                true);

        addStringArgument(
                ARG_ADDRESS,
                getString("raw.address.label"),
                getString("raw.address"),
                "",
                true);
    }


    public VirtualMachine
        launch(Map<String,? extends Connector.Argument> arguments)
        throws IOException, IllegalConnectorArgumentsException,
               VMStartException
    {
        String command = argument(ARG_COMMAND, arguments).value();
        String address = argument(ARG_ADDRESS, arguments).value();

        String quote = argument(ARG_QUOTE, arguments).value();

        if (quote.length() > 1) {
            throw new IllegalConnectorArgumentsException("Invalid length",
                                                         ARG_QUOTE);
        }

        TransportService.ListenKey listener = transportService.startListening(address);

        try {
            return launch(tokenizeCommand(command, quote.charAt(0)),
                          address, listener, transportService);
        } finally {
            transportService.stopListening(listener);
        }
    }

    public String name() {
        return "com.sun.jdi.RawCommandLineLaunch";
    }

    public String description() {
        return getString("raw.description");
    }
}