001/* 
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 *  contributor license agreements.  See the NOTICE file distributed with
004 *  this work for additional information regarding copyright ownership.
005 *  The ASF licenses this file to You under the Apache License, Version 2.0
006 *  (the "License"); you may not use this file except in compliance with
007 *  the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 *  Unless required by applicable law or agreed to in writing, software
012 *  distributed under the License is distributed on an "AS IS" BASIS,
013 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 *  See the License for the specific language governing permissions and
015 *  limitations under the License.
016 *
017 */
018
019package org.apache.commons.exec.launcher;
020
021import java.io.File;
022import java.io.IOException;
023import java.util.Map;
024
025import org.apache.commons.exec.CommandLine;
026
027/**
028 * A command launcher for Windows XP/2000/NT that uses 'cmd.exe' when launching
029 * commands in directories other than the current working directory.
030 */
031public class WinNTCommandLauncher extends CommandLauncherProxy {
032    public WinNTCommandLauncher(final CommandLauncher launcher) {
033        super(launcher);
034    }
035
036    /**
037     * Launches the given command in a new process, in the given working
038     * directory.
039     * 
040     * @param cmd
041     *            the command line to execute as an array of strings
042     * @param env
043     *            the environment to set as an array of strings
044     * @param workingDir
045     *            working directory where the command should run
046     * @throws IOException
047     *             forwarded from the exec method of the command launcher
048     */
049    public Process exec(final CommandLine cmd, final Map env,
050            final File workingDir) throws IOException {
051        if (workingDir == null) {
052            return exec(cmd, env);
053        }
054
055        // Use cmd.exe to change to the specified directory before running
056        // the command
057        CommandLine newCmd = new CommandLine("cmd");
058        newCmd.addArgument("/c");
059        newCmd.addArguments(cmd.toStrings());
060
061        return exec(newCmd, env);
062    }
063}