| 1 | /******************************************************************************* |
| 2 | * Copyright (c) 2009 IBM Corporation and others. |
| 3 | * All rights reserved. This program and the accompanying materials |
| 4 | * are made available under the terms of the Eclipse Public License v1.0 |
| 5 | * which accompanies this distribution, and is available at |
| 6 | * http://www.eclipse.org/legal/epl-v10.html |
| 7 | * |
| 8 | * Contributors: |
| 9 | * IBM Corporation - initial API and implementation |
| 10 | *******************************************************************************/ |
| 11 | package org.eclipse.pde.api.tools.internal.util; |
| 12 | |
| 13 | import java.io.File; |
| 14 | import java.util.HashSet; |
| 15 | import java.util.Iterator; |
| 16 | |
| 17 | /** |
| 18 | * Manager to handle temp files that have been created. Used as a fall-back to |
| 19 | * ensure we clean up after ourselves |
| 20 | * |
| 21 | * @since 1.0.1 |
| 22 | */ |
| 23 | public final class FileManager { |
| 24 | |
| 25 | private static FileManager fInstance = null; |
| 26 | |
| 27 | /** |
| 28 | * The set of recorded file paths |
| 29 | */ |
| 30 | private static HashSet fFilePaths = null; |
| 31 | |
| 32 | /** |
| 33 | * Constructor |
| 34 | * private - no instantiation |
| 35 | */ |
| 36 | private FileManager() {} |
| 37 | |
| 38 | /** |
| 39 | * Returns the singleton instance of the manager |
| 40 | * @return the manager instance |
| 41 | */ |
| 42 | public synchronized static FileManager getManager() { |
| 43 | if(fInstance == null) { |
| 44 | fInstance = new FileManager(); |
| 45 | } |
| 46 | return fInstance; |
| 47 | } |
| 48 | |
| 49 | /** |
| 50 | * Records a file root path to be deleted on the next call to |
| 51 | * {@link #deleteFiles()}. |
| 52 | * @param absolutepath the absolute path in the local file system of the file to delete |
| 53 | */ |
| 54 | public void recordTempFileRoot(String absolutepath) { |
| 55 | if(absolutepath != null) { |
| 56 | if(fFilePaths == null) { |
| 57 | fFilePaths = new HashSet(10); |
| 58 | } |
| 59 | fFilePaths.add(absolutepath); |
| 60 | } |
| 61 | } |
| 62 | |
| 63 | /** |
| 64 | * Deletes all of the recorded file roots from the local filesystem (if still existing) |
| 65 | * and returns the success of the entire delete operation. |
| 66 | * @return true if all recorded files were deleted, false otherwise |
| 67 | */ |
| 68 | public boolean deleteFiles() { |
| 69 | boolean success = true; |
| 70 | if(fFilePaths != null) { |
| 71 | File file = null; |
| 72 | for(Iterator iter = fFilePaths.iterator(); iter.hasNext();) { |
| 73 | file = new File((String) iter.next()); |
| 74 | success &= Util.delete(file); |
| 75 | } |
| 76 | fFilePaths.clear(); |
| 77 | } |
| 78 | return success; |
| 79 | } |
| 80 | } |