| /* |
| * 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.commons.io.filefilter; |
| |
| import java.io.File; |
| import java.io.FileFilter; |
| import java.io.FilenameFilter; |
| import java.io.Serializable; |
| import java.util.Objects; |
| |
| /** |
| * This class turns a Java FileFilter or FilenameFilter into an IO FileFilter. |
| * <h2>Deprecating Serialization</h2> |
| * <p> |
| * <em>Serialization is deprecated and will be removed in 3.0.</em> |
| * </p> |
| * |
| * @since 1.0 |
| * @see FileFilterUtils#asFileFilter(FileFilter) |
| * @see FileFilterUtils#asFileFilter(FilenameFilter) |
| */ |
| public class DelegateFileFilter extends AbstractFileFilter implements Serializable { |
| |
| private static final long serialVersionUID = -8723373124984771318L; |
| |
| /** The File filter */ |
| private transient final FileFilter fileFilter; |
| /** The Filename filter */ |
| private transient final FilenameFilter fileNameFilter; |
| |
| /** |
| * Constructs a delegate file filter around an existing FileFilter. |
| * |
| * @param fileFilter the filter to decorate |
| */ |
| public DelegateFileFilter(final FileFilter fileFilter) { |
| Objects.requireNonNull(fileFilter, "filter"); |
| this.fileFilter = fileFilter; |
| this.fileNameFilter = null; |
| } |
| |
| /** |
| * Constructs a delegate file filter around an existing FilenameFilter. |
| * |
| * @param fileNameFilter the filter to decorate |
| */ |
| public DelegateFileFilter(final FilenameFilter fileNameFilter) { |
| Objects.requireNonNull(fileNameFilter, "filter"); |
| this.fileNameFilter = fileNameFilter; |
| this.fileFilter = null; |
| } |
| |
| /** |
| * Checks the filter. |
| * |
| * @param file the file to check |
| * @return true if the filter matches |
| */ |
| @Override |
| public boolean accept(final File file) { |
| if (fileFilter != null) { |
| return fileFilter.accept(file); |
| } |
| return super.accept(file); |
| } |
| |
| /** |
| * Checks the filter. |
| * |
| * @param dir the directory |
| * @param name the file name in the directory |
| * @return true if the filter matches |
| */ |
| @Override |
| public boolean accept(final File dir, final String name) { |
| if (fileNameFilter != null) { |
| return fileNameFilter.accept(dir, name); |
| } |
| return super.accept(dir, name); |
| } |
| |
| /** |
| * Provide a String representation of this file filter. |
| * |
| * @return a String representation |
| */ |
| @Override |
| public String toString() { |
| final String delegate = fileFilter != null ? fileFilter.toString() : fileNameFilter.toString(); |
| return super.toString() + "(" + delegate + ")"; |
| } |
| |
| } |