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    
019    package org.apache.commons.exec.launcher;
020    
021    import java.io.File;
022    import java.io.IOException;
023    import java.util.Map;
024    
025    import 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     */
031    public 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    }