CommandLauncherImpl.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.commons.exec.launcher;

import java.io.File;
import java.io.IOException;
import java.util.Map;

import org.apache.commons.exec.CommandLine;
import org.apache.commons.exec.environment.EnvironmentUtils;

/**
 * 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
 * directory.
 */
public abstract class CommandLauncherImpl implements CommandLauncher {

    /**
     * Constructs a new instance.
     */
    public CommandLauncherImpl() {
        // empty
    }

    @Override
    public Process exec(final CommandLine cmd, final Map<String, String> env) throws IOException {
        return Runtime.getRuntime().exec(cmd.toStrings(), EnvironmentUtils.toStrings(env));
    }

    @Override
    public abstract Process exec(CommandLine cmd, Map<String, String> env, File workingDir) throws IOException;

    /** @see org.apache.commons.exec.launcher.CommandLauncher#isFailure(int) */
    @Override
    public boolean isFailure(final int exitValue) {
        // non zero exit value signals failure
        return exitValue != 0;
    }
}