| /******************************************************************************* |
| * Copyright (c) 2000, 2006 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 Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.releng.generators; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * Defines common behaviour for PDE Core applications. |
| */ |
| public abstract class AbstractApplication { |
| |
| /** |
| * Starting point for application logic. |
| */ |
| protected abstract void run() throws Exception; |
| |
| /* |
| * @see IPlatformRunnable#run(Object) |
| */ |
| public Object run(Object args) throws Exception { |
| processCommandLine(getArrayList((String[]) args)); |
| try { |
| run(); |
| } catch (Exception e) { |
| e.printStackTrace(System.out); |
| } |
| return null; |
| } |
| |
| /** |
| * Helper method to ensure an array is converted into an ArrayList. |
| */ |
| public static ArrayList getArrayList(Object[] args) { |
| // We could be using Arrays.asList() here, but it does not specify |
| // what kind of list it will return. We do need a list that |
| // implements the method List.remove(int) and ArrayList does. |
| ArrayList result = new ArrayList(args.length); |
| for (int i = 0; i < args.length; i++) |
| result.add(args[i]); |
| return result; |
| } |
| |
| |
| |
| |
| /** |
| * Looks for interesting command line arguments. |
| */ |
| protected void processCommandLine(List commands) { |
| } |
| |
| /** |
| * From a command line list, get the array of arguments of a given parameter. |
| * The parameter and its arguments are removed from the list. |
| * @return null if the parameter is not found or has no arguments |
| */ |
| protected String[] getArguments(List commands, String param) { |
| int index = commands.indexOf(param); |
| if (index == -1) |
| return null; |
| commands.remove(index); |
| if (index == commands.size()) // if this is the last command |
| return null; |
| List args = new ArrayList(commands.size()); |
| while (index < commands.size()) { // while not the last command |
| String command = (String) commands.get(index); |
| if (command.startsWith("-")) // is it a new parameter? |
| break; |
| args.add(command); |
| commands.remove(index); |
| } |
| if (args.isEmpty()) |
| return null; |
| return (String[]) args.toArray(new String[args.size()]); |
| } |
| |
| |
| |
| |
| } |