001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *   https://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing,
013 * software distributed under the License is distributed on an
014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 * KIND, either express or implied.  See the License for the
016 * specific language governing permissions and limitations
017 * under the License.
018 */
019
020package org.apache.commons.exec.launcher;
021
022import java.io.File;
023import java.io.IOException;
024import java.util.Map;
025
026import org.apache.commons.exec.CommandLine;
027import org.apache.commons.exec.environment.EnvironmentUtils;
028
029/**
030 * A command launcher for a particular JVM/OS platform. This class is a general purpose command launcher which can only launch commands in the current working
031 * directory.
032 */
033public abstract class CommandLauncherImpl implements CommandLauncher {
034
035    /**
036     * Constructs a new instance.
037     */
038    public CommandLauncherImpl() {
039        // empty
040    }
041
042    @Override
043    public Process exec(final CommandLine cmd, final Map<String, String> env) throws IOException {
044        return Runtime.getRuntime().exec(cmd.toStrings(), EnvironmentUtils.toStrings(env));
045    }
046
047    @Override
048    public abstract Process exec(CommandLine cmd, Map<String, String> env, File workingDir) throws IOException;
049
050    /** @see org.apache.commons.exec.launcher.CommandLauncher#isFailure(int) */
051    @Override
052    public boolean isFailure(final int exitValue) {
053        // non zero exit value signals failure
054        return exitValue != 0;
055    }
056}