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 }