| /******************************************************************************* |
| * Copyright (c) 2003, 2005 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.jst.j2ee.commonarchivecore.internal.util; |
| |
| import java.io.File; |
| import java.util.ArrayList; |
| import java.util.HashSet; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Set; |
| |
| |
| /** |
| * @author jsholl |
| * |
| * TODO To change the template for this generated type comment go to Window - Preferences - Java - |
| * Code Style - Code Templates |
| */ |
| public class DeleteOnExitUtility { |
| |
| private static Set tempFilesToDelete; |
| private static boolean initialized = false; |
| private static int cleanupCount = 0; |
| private static final int CLEANUP_THRESHOLD = 10000; |
| |
| public static void markForDeletion(File file) { |
| if (!initialized) { |
| initialized = true; |
| try { |
| Runtime.getRuntime().addShutdownHook(new Thread(new Runnable() { |
| public void run() { |
| if (tempFilesToDelete != null) { |
| synchronized (tempFilesToDelete) { |
| Iterator iterator = tempFilesToDelete.iterator(); |
| File file = null; |
| while (iterator.hasNext()) { |
| try { |
| file = (File) iterator.next(); |
| if (file.exists()) { |
| file.delete(); |
| } |
| } catch (SecurityException e) { |
| } |
| } |
| } |
| } |
| } |
| })); |
| tempFilesToDelete = new HashSet(); |
| } catch (SecurityException e) { |
| } |
| } |
| if (tempFilesToDelete != null) { |
| synchronized (tempFilesToDelete) { |
| cleanupCount++; |
| tempFilesToDelete.add(file); |
| } |
| if (cleanupCount > CLEANUP_THRESHOLD) { |
| runCleanup(); |
| } |
| } |
| } |
| |
| public static void fileHasBeenDeleted(File file) { |
| if (tempFilesToDelete != null) { |
| synchronized (tempFilesToDelete) { |
| cleanupCount++; |
| try { |
| if (!file.exists()) { |
| tempFilesToDelete.remove(file); |
| } |
| } catch (SecurityException e) { |
| } |
| } |
| if (cleanupCount > CLEANUP_THRESHOLD) { |
| runCleanup(); |
| } |
| } |
| } |
| |
| public static void runCleanup() { |
| if (tempFilesToDelete != null) { |
| synchronized (tempFilesToDelete) { |
| cleanupCount = 0; |
| List filesToRemove = null; |
| Iterator iterator = tempFilesToDelete.iterator(); |
| File file = null; |
| while (iterator.hasNext()) { |
| try { |
| file = (File) iterator.next(); |
| if (!file.exists()) { |
| if (filesToRemove == null) { |
| filesToRemove = new ArrayList(); |
| } |
| filesToRemove.add(file); |
| } |
| } catch (SecurityException e) { |
| } |
| } |
| if (filesToRemove != null) { |
| tempFilesToDelete.removeAll(filesToRemove); |
| } |
| } |
| } |
| } |
| |
| |
| } |