1 files changed, 144 insertions, 0 deletions
diff --git a/plugins/org.eclipse.emf.cdo.releng.setup/src/org/eclipse/emf/cdo/releng/setup/util/FileUtil.java b/plugins/org.eclipse.emf.cdo.releng.setup/src/org/eclipse/emf/cdo/releng/setup/util/FileUtil.java
new file mode 100644
index 0000000000..1e584cca9e
--- /dev/null
+++ b/plugins/org.eclipse.emf.cdo.releng.setup/src/org/eclipse/emf/cdo/releng/setup/util/FileUtil.java
@@ -0,0 +1,144 @@
+/*
+ * Copyright (c) 2004-2013 Eike Stepper (Berlin, Germany) 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:
+ *    Eike Stepper - initial API and implementation
+ */
+package org.eclipse.emf.cdo.releng.setup.util;
+
+import org.eclipse.emf.cdo.releng.internal.setup.Activator;
+
+import org.eclipse.core.runtime.IProgressMonitor;
+import org.eclipse.core.runtime.IStatus;
+import org.eclipse.core.runtime.OperationCanceledException;
+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
+{
+  public static void rename(File from) throws IOException, InterruptedException
+  {
+    File to = new File(from.getParentFile(), from.getName() + "." + System.currentTimeMillis());
+    rename(from, to);
+  }
+
+  public static void rename(File from, File to) throws IOException, InterruptedException
+  {
+    for (int i = 0; i < 1000; i++)
+    {
+      if (from.renameTo(to))
+      {
+        return;
+      }
+
+      Thread.sleep(5);
+    }
+
+    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);
+          return Status.OK_STATUS;
+        }
+        catch (Exception ex)
+        {
+          Activator.log(ex);
+          return Activator.getStatus(ex);
+        }
+      }
+    }.schedule();
+  }
+
+  public static void delete(File file, IProgressMonitor monitor) throws IOException, InterruptedException
+  {
+    List<File> files = listAllFiles(file);
+    if (files.isEmpty())
+    {
+      return;
+    }
+
+    monitor.beginTask("Deleting files in " + file.getAbsolutePath(), files.size());
+
+    try
+    {
+      Collections.reverse(files);
+      for (File child : files)
+      {
+        String childPath = child.getAbsolutePath();
+        monitor.setTaskName("Deleting file " + childPath);
+
+        doDelete(child);
+
+        monitor.worked(1);
+        if (monitor.isCanceled())
+        {
+          throw new OperationCanceledException();
+        }
+      }
+    }
+    finally
+    {
+      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);
+      }
+    }
+  }
+}