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Apache Commons Exec is a library to reliably execute external processes from within the JVM.
/*
* 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
*
* http://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 {
public Process exec(final CommandLine cmd, final Map env)
throws IOException {
final String[] envVar = EnvironmentUtils.toStrings(env);
return Runtime.getRuntime().exec(cmd.toStrings(), envVar);
}
public abstract Process exec(final CommandLine cmd, final Map env,
final File workingDir) throws IOException;
/** @see org.apache.commons.exec.launcher.CommandLauncher#isFailure(int) */
public boolean isFailure(final int exitValue)
{
// non zero exit value signals failure
return exitValue != 0;
}
}