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/*******************************************************************************
* 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);
}
}
}
}
}
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