| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.apache.ode.utils.fs; |
| |
| import java.io.File; |
| import java.io.FileFilter; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.TreeSet; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| |
| /** |
| * Various file system utilities. |
| */ |
| public class FileUtils { |
| |
| private static final Log __log = LogFactory.getLog(FileUtils.class); |
| |
| /** |
| * Test if the given path is absolute or not. |
| * @param path |
| * @return true is absolute |
| * @see java.io.File#isAbsolute() |
| */ |
| public static boolean isAbsolute(String path){ |
| return new File(path).isAbsolute(); |
| } |
| |
| /** |
| * Test if the given path is relative or absolute. |
| * @param path |
| * @return true is relative |
| * @see java.io.File#isAbsolute() |
| */ |
| public static boolean isRelative(String path){ |
| return !isAbsolute(path); |
| } |
| |
| |
| /** |
| * Delete a file/directory, recursively. |
| * |
| * @param file |
| * file/directory to delete |
| * @return <code>true</code> if successful |
| */ |
| public static boolean deepDelete(File file) { |
| if (file.exists()) { |
| if (__log.isDebugEnabled()) { |
| __log.debug("deleting: " + file.getAbsolutePath()); |
| } |
| if (file.delete()) { |
| return true; |
| } |
| |
| if (file.isDirectory()) { |
| boolean success = true; |
| File[] files = file.listFiles(); |
| for (int i = 0; i < files.length; ++i) { |
| success &= deepDelete(files[i]); |
| } |
| return success ? file.delete() : false; |
| } |
| else { |
| __log.error("Unable to deepDelete file " + file.getAbsolutePath() |
| + "; this may be caused by a descriptor leak and should be reported."); |
| return false; |
| } |
| } |
| else { |
| // file seems to be gone already?! anyway nothing to do for us. |
| return true; |
| } |
| } |
| |
| /** |
| * Recursively collect all Files in the given directory and all its |
| * subdirectories. |
| * |
| * @param rootDirectory |
| * the top level directory used for the search |
| * @return a List of found Files |
| */ |
| public static List<File> directoryEntriesInPath(File rootDirectory) { |
| return FileUtils.directoryEntriesInPath(rootDirectory, null); |
| } |
| |
| /** |
| * Recursively collect all Files in the given directory and all its |
| * subdirectories, applying the given FileFilter. The FileFilter is also applied to the given rootDirectory. |
| * As a result the rootDirectory might be in the returned list. |
| * <p> |
| * Returned files are ordered lexicographically but for each directory, files come before its sudirectories. |
| * For instance:<br/> |
| * test<br/> |
| * test/alpha.txt<br/> |
| * test/zulu.txt<br/> |
| * test/a<br/> |
| * test/a/alpha.txt<br/> |
| * test/z<br/> |
| * test/z/zulu.txt<br/> |
| * <p> |
| * instead of:<br/> |
| * test<br/> |
| * test/a<br/> |
| * test/a/alpha.txt<br/> |
| * test/alpha.txt<br/> |
| * test/z<br/> |
| * test/z/zulu.txt<br/> |
| * test/zulu.txt<br/> |
| * |
| * @param rootDirectory |
| * the top level directory used for the search |
| * @param filter |
| * a FileFilter used for accepting/rejecting individual entries |
| * @return a List of found Files |
| */ |
| public static List<File> directoryEntriesInPath(File rootDirectory, FileFilter filter) { |
| if (rootDirectory == null) { |
| throw new IllegalArgumentException("File must not be null!"); |
| } |
| |
| if (!rootDirectory.exists()) { |
| throw new IllegalArgumentException("File does not exist!"); |
| } |
| |
| ArrayList<File> collectedFiles = new ArrayList<File>(32); |
| |
| if (rootDirectory.isFile()) { |
| if ((filter == null) || ((filter != null) && (filter.accept(rootDirectory)))) { |
| collectedFiles.add(rootDirectory); |
| } |
| return collectedFiles; |
| } |
| |
| FileUtils.directoryEntriesInPath(collectedFiles, rootDirectory, filter); |
| return collectedFiles; |
| } |
| |
| private static void directoryEntriesInPath(List<File> collectedFiles, File parentDir, FileFilter filter) { |
| if ((filter == null) || ((filter != null) && (filter.accept(parentDir)))) { |
| collectedFiles.add(parentDir); |
| } |
| |
| File[] allFiles = parentDir.listFiles(); |
| if (allFiles != null) { |
| TreeSet<File> dirs = new TreeSet<File>(); |
| TreeSet<File> acceptedFiles = new TreeSet<File>(); |
| for (File f : allFiles) { |
| if (f.isDirectory()) { |
| dirs.add(f); |
| } else { |
| if ((filter == null) || ((filter != null) && (filter.accept(f)))) { |
| acceptedFiles.add(f); |
| } |
| } |
| } |
| collectedFiles.addAll(acceptedFiles); |
| for (File currentFile : dirs) { |
| FileUtils.directoryEntriesInPath(collectedFiles, currentFile, filter); |
| } |
| } |
| } |
| |
| public static String encodePath(String path) { |
| return path.replaceAll(" ", "%20"); |
| } |
| |
| public static void main(String[] args) { |
| List<File> l = directoryEntriesInPath(new File("/tmp/test")); |
| for(File f : l) System.out.println(f); |
| System.out.println("########"); |
| TreeSet<File> s= new TreeSet(l); |
| for(File f : s) System.out.println(f); |
| } |
| } |