14fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy/* 24fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * Licensed to the Apache Software Foundation (ASF) under one or more 34fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * contributor license agreements. See the NOTICE file distributed with 44fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * this work for additional information regarding copyright ownership. 54fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * The ASF licenses this file to You under the Apache License, Version 2.0 64fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * (the "License"); you may not use this file except in compliance with 74fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * the License. You may obtain a copy of the License at 84fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * 94fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * http://www.apache.org/licenses/LICENSE-2.0 104fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * 114fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * Unless required by applicable law or agreed to in writing, software 124fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * distributed under the License is distributed on an "AS IS" BASIS, 134fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 144fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * See the License for the specific language governing permissions and 154fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * limitations under the License. 164fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy */ 174fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedypackage org.apache.commons.io.filefilter; 184fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy 194fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedyimport java.io.File; 204fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedyimport java.io.FileFilter; 214fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedyimport java.io.FilenameFilter; 224fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedyimport java.io.Serializable; 234fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy 244fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy/** 254fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * This class turns a Java FileFilter or FilenameFilter into an IO FileFilter. 264fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * 274fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * @since Commons IO 1.0 284fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * @version $Revision: 591058 $ $Date: 2007-11-01 15:47:05 +0000 (Thu, 01 Nov 2007) $ 294fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * 304fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * @author Stephen Colebourne 314fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy */ 324fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedypublic class DelegateFileFilter extends AbstractFileFilter implements Serializable { 334fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy 344fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy /** The Filename filter */ 354fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy private final FilenameFilter filenameFilter; 364fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy /** The File filter */ 374fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy private final FileFilter fileFilter; 384fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy 394fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy /** 404fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * Constructs a delegate file filter around an existing FilenameFilter. 414fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * 424fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * @param filter the filter to decorate 434fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy */ 444fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy public DelegateFileFilter(FilenameFilter filter) { 454fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy if (filter == null) { 464fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy throw new IllegalArgumentException("The FilenameFilter must not be null"); 474fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy } 484fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy this.filenameFilter = filter; 494fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy this.fileFilter = null; 504fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy } 514fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy 524fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy /** 534fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * Constructs a delegate file filter around an existing FileFilter. 544fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * 554fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * @param filter the filter to decorate 564fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy */ 574fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy public DelegateFileFilter(FileFilter filter) { 584fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy if (filter == null) { 594fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy throw new IllegalArgumentException("The FileFilter must not be null"); 604fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy } 614fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy this.fileFilter = filter; 624fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy this.filenameFilter = null; 634fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy } 644fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy 654fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy /** 664fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * Checks the filter. 674fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * 684fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * @param file the file to check 694fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * @return true if the filter matches 704fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy */ 714fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy public boolean accept(File file) { 724fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy if (fileFilter != null) { 734fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy return fileFilter.accept(file); 744fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy } else { 754fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy return super.accept(file); 764fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy } 774fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy } 784fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy 794fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy /** 804fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * Checks the filter. 814fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * 824fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * @param dir the directory 834fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * @param name the filename in the directory 844fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * @return true if the filter matches 854fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy */ 864fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy public boolean accept(File dir, String name) { 874fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy if (filenameFilter != null) { 884fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy return filenameFilter.accept(dir, name); 894fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy } else { 904fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy return super.accept(dir, name); 914fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy } 924fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy } 934fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy 944fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy /** 954fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * Provide a String representaion of this file filter. 964fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * 974fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy * @return a String representaion 984fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy */ 994fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy public String toString() { 1004fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy String delegate = (fileFilter != null ? fileFilter.toString() : filenameFilter.toString()); 1014fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy return super.toString() + "(" + delegate + ")"; 1024fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy } 1034fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy 1044fa0a3295bcacbdcd6a9e7709cf17aa5adb90356Scott Kennedy} 105