    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}