| /* |
| * 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.ziplock; |
| |
| import java.io.File; |
| import java.io.FileFilter; |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.regex.Pattern; |
| |
| /** |
| * @version $Revision$ $Date$ |
| */ |
| public class Files { |
| |
| public static List<File> collect(final File dir, final String regex) { |
| return collect(dir, Pattern.compile(regex)); |
| } |
| |
| public static List<File> collect(final File dir, final Pattern pattern) { |
| return collect(dir, new FileFilter() { |
| @Override |
| public boolean accept(final File file) { |
| return pattern.matcher(file.getName()).matches(); |
| } |
| }); |
| } |
| |
| |
| public static List<File> collect(final File dir, final FileFilter filter) { |
| final List<File> accepted = new ArrayList<File>(); |
| if (filter.accept(dir)) { |
| accepted.add(dir); |
| } |
| |
| final File[] files = dir.listFiles(); |
| if (files != null) { |
| for (final File file : files) { |
| accepted.addAll(collect(file, filter)); |
| } |
| } |
| |
| return accepted; |
| } |
| |
| public static void remove(final File file) { |
| if (file == null) { |
| return; |
| } |
| if (!file.exists()) { |
| return; |
| } |
| |
| if (file.isDirectory()) { |
| final File[] files = file.listFiles(); |
| if (files != null) { |
| for (final File child : files) { |
| remove(child); |
| } |
| } |
| } |
| if (!file.delete()) { |
| throw new IllegalStateException("Could not delete file: " + file.getAbsolutePath()); |
| } |
| } |
| |
| |
| public static File tmpdir() { |
| try { |
| File file = null; |
| try { |
| file = File.createTempFile("temp", "dir"); |
| } catch (final Throwable e) { |
| //Use a local tmp directory |
| final File tmp = new File("tmp"); |
| if (!tmp.exists() && !tmp.mkdirs()) { |
| throw new IOException("Failed to create local tmp directory: " + tmp.getAbsolutePath()); |
| } |
| |
| file = File.createTempFile("temp", "dir", tmp); |
| } |
| |
| if (!file.delete()) { |
| throw new IOException("Failed to create temp dir. Delete failed"); |
| } |
| |
| mkdir(file); |
| deleteOnExit(file); |
| |
| return file; |
| |
| } catch (final IOException e) { |
| throw new RuntimeException(e); |
| } |
| } |
| |
| public static File mkdir(final File file) { |
| if (file.exists()) { |
| return file; |
| } |
| if (!file.mkdirs()) { |
| throw new RuntimeException("Cannot mkdir: " + file.getAbsolutePath()); |
| } |
| return file; |
| } |
| |
| // Shutdown hook for recursive delete on tmp directories |
| static final List<String> delete = new ArrayList<String>(); |
| |
| static { |
| final ClassLoader loader = Thread.currentThread().getContextClassLoader(); |
| Thread.currentThread().setContextClassLoader(Files.class.getClassLoader()); |
| try { |
| final Thread deleteShutdownHook = new Thread() { |
| @Override |
| public void run() { |
| for (final String path : delete) { |
| try { |
| remove(new File(path)); |
| } catch (final Throwable e) { |
| System.err.println(e.getMessage()); |
| } |
| } |
| } |
| }; |
| try { |
| Runtime.getRuntime().addShutdownHook(deleteShutdownHook); |
| } catch (final Throwable e) { |
| //Ignore |
| } |
| } finally { |
| Thread.currentThread().setContextClassLoader(loader); |
| } |
| } |
| |
| public static void deleteOnExit(final File file) { |
| delete.add(file.getAbsolutePath()); |
| } |
| |
| } |