update/org.eclipse.update.core/jarprocessor/org/eclipse/update/internal/jarprocessor/CommandStep.java

/*******************************************************************************
 * Copyright (c) 2006, 2007 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *     IBM - Initial API and implementation
 *******************************************************************************/
package org.eclipse.update.internal.jarprocessor;

import java.io.File;
import java.util.List;
import java.util.Properties;

/**
 * @author aniefer@ca.ibm.com
 *
 */
public abstract class CommandStep implements IProcessStep {
	protected String command = null;
	protected String extension = null;
	private  Properties options = null;
	protected boolean verbose = false;
	
	public CommandStep(Properties options, String command, String extension, boolean verbose) {
		this.command = command;
		this.extension = extension;
		this.options = options;
		this.verbose = verbose;
	}

	protected static int execute(String[] cmd) {
		return execute(cmd, false);
	}
	
	protected static int execute(String[] cmd, boolean verbose) {
		Runtime runtime = Runtime.getRuntime();
		Process proc = null;
		try {
			proc = runtime.exec(cmd);
			StreamProcessor errorStreamProcessor = new StreamProcessor(proc.getErrorStream(), StreamProcessor.STDERR, verbose); //$NON-NLS-1$
			StreamProcessor outputStreamProcessor = new StreamProcessor(proc.getInputStream(), StreamProcessor.STDOUT, verbose); //$NON-NLS-1$
			errorStreamProcessor.start();
			outputStreamProcessor.start();
		} catch (Exception e) {
			if(verbose) {
				System.out.println("Error executing command " + Utils.concat(cmd)); //$NON-NLS-1$
				e.printStackTrace();
			}
			return -1;
		}
		try {
			int result = proc.waitFor();
			return result;
		} catch (InterruptedException e) {
			if(verbose)
				e.printStackTrace();
		}
		return -1;
	}
	
	public Properties getOptions() {
		if(options == null)
			options = new Properties();
		return options;
	}
	
	public void adjustInf(File input, Properties inf, List containers) {
		//nothing
	}
}