| /* |
| * Copyright (c) 2014, 2017 Eike Stepper (Loehne, Germany) and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v2.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v20.html |
| * |
| * Contributors: |
| * Eike Stepper - initial API and implementation |
| */ |
| package org.eclipse.oomph.setup.util; |
| |
| import org.eclipse.oomph.internal.setup.SetupPlugin; |
| |
| import org.eclipse.core.runtime.IProgressMonitor; |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.core.runtime.Status; |
| import org.eclipse.core.runtime.jobs.Job; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| |
| /** |
| * @author Eike Stepper |
| */ |
| public final class FileUtil |
| { |
| private FileUtil() |
| { |
| } |
| |
| public static File rename(File from) throws IOException, InterruptedException |
| { |
| File to = new File(from.getParentFile(), from.getName() + "." + System.currentTimeMillis()); |
| rename(from, to); |
| return to; |
| } |
| |
| public static void rename(File from, File to) throws IOException, InterruptedException |
| { |
| if (from.exists()) |
| { |
| for (int i = 0; i < 200; i++) |
| { |
| if (from.renameTo(to)) |
| { |
| return; |
| } |
| |
| Thread.sleep(10); |
| } |
| } |
| |
| throw new IOException("Could not rename '" + from.getAbsolutePath() + "' to '" + to.getAbsolutePath() + "'"); |
| } |
| |
| public static void deleteAsync(final File file) throws IOException, InterruptedException |
| { |
| new Job("Deleting old files") |
| { |
| @Override |
| protected IStatus run(IProgressMonitor monitor) |
| { |
| try |
| { |
| delete(file, monitor, false); |
| return Status.OK_STATUS; |
| } |
| catch (Exception ex) |
| { |
| SetupPlugin.INSTANCE.log(ex); |
| return SetupPlugin.INSTANCE.getStatus(ex); |
| } |
| } |
| }.schedule(); |
| } |
| |
| public static void delete(File file, IProgressMonitor monitor) throws IOException, InterruptedException |
| { |
| delete(file, monitor, true); |
| } |
| |
| private static void delete(File file, IProgressMonitor monitor, boolean verbose) throws IOException, InterruptedException |
| { |
| List<File> files = listAllFiles(file); |
| int size = files.size(); |
| if (size == 0) |
| { |
| return; |
| } |
| |
| if (verbose) |
| { |
| String message = ""; |
| if (file.isDirectory() && size > 1) |
| { |
| message = "Deleting files in " + file.getAbsolutePath(); |
| } |
| |
| monitor.beginTask(message, size); |
| } |
| |
| try |
| { |
| Collections.reverse(files); |
| for (File child : files) |
| { |
| SetupPlugin.checkCancelation(monitor); |
| |
| if (verbose) |
| { |
| String childPath = child.getAbsolutePath(); |
| monitor.setTaskName("Deleting file " + childPath); |
| } |
| |
| doDelete(child); |
| monitor.worked(1); |
| } |
| } |
| finally |
| { |
| if (verbose) |
| { |
| monitor.done(); |
| } |
| } |
| } |
| |
| private static void doDelete(File file) throws IOException, InterruptedException |
| { |
| for (int i = 0; i < 1000; i++) |
| { |
| if (file.delete()) |
| { |
| return; |
| } |
| |
| Thread.sleep(5); |
| } |
| |
| throw new IOException("Could not delete '" + file.getAbsolutePath() + "'"); |
| } |
| |
| private static List<File> listAllFiles(File file) |
| { |
| List<File> result = new ArrayList<File>(); |
| if (file != null && file.exists()) |
| { |
| listAllFiles(file, result); |
| } |
| |
| return result; |
| } |
| |
| private static void listAllFiles(File file, List<File> result) |
| { |
| result.add(file); |
| if (file.isDirectory()) |
| { |
| for (File child : file.listFiles()) |
| { |
| listAllFiles(child, result); |
| } |
| } |
| } |
| } |