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;
026import org.apache.commons.exec.environment.EnvironmentUtils;
027
028/**
029 * A command launcher for a particular JVM/OS platform. This class is a general
030 * purpose command launcher which can only launch commands in the current
031 * working directory.
032 *
033 * @version $Id: CommandLauncherImpl.java 1557338 2014-01-11 10:34:22Z sebb $
034 */
035public abstract class CommandLauncherImpl implements CommandLauncher {
036
037    public Process exec(final CommandLine cmd, final Map<String, String> env)
038            throws IOException {
039        final String[] envVar = EnvironmentUtils.toStrings(env);
040        return Runtime.getRuntime().exec(cmd.toStrings(), envVar);
041    }
042
043    public abstract Process exec(final CommandLine cmd, final Map<String, String> env,
044            final File workingDir) throws IOException;
045
046    /** @see org.apache.commons.exec.launcher.CommandLauncher#isFailure(int) */    
047    public boolean isFailure(final int exitValue)
048    {
049        // non zero exit value signals failure
050        return exitValue != 0;
051    }
052}