    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    import 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    public abstract class CommandLauncherImpl implements CommandLauncher {
    034
    035        public Process exec(final CommandLine cmd, final Map env)
    036                throws IOException {
    037            String[] envVar = EnvironmentUtils.toStrings(env);
    038            return Runtime.getRuntime().exec(cmd.toStrings(), envVar);
    039        }
    040
    041        public abstract Process exec(final CommandLine cmd, final Map env,
    042                final File workingDir) throws IOException;
    043
    044        /** @see org.apache.commons.exec.launcher.CommandLauncher#isFailure(int) */
    045        public boolean isFailure(final int exitValue)
    046        {
    047            // non zero exit value signals failure
    048            return exitValue != 0;
    049        }
    050    }