?? namefilefilter.java
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/*
* Copyright 2002-2004 The Apache Software Foundation.
*
* Licensed 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.util.List;
/**
* Filters filenames for a certain name.
* <p>
* For example, to print all files and directories in the
* current directory whose name is <code>Test</code>:
*
* <pre>
* File dir = new File(".");
* String[] files = dir.list( new NameFileFilter("Test") );
* for ( int i = 0; i < files.length; i++ ) {
* System.out.println(files[i]);
* }
* </pre>
*
* @since Commons IO 1.0
* @version $Revision: 155419 $ $Date: 2005-02-26 13:02:41 +0000 (Sat, 26 Feb 2005) $
*
* @author Henri Yandell
* @author Stephen Colebourne
* @author Federico Barbieri
* @author Serge Knystautas
* @author Peter Donald
*/
public class NameFileFilter extends AbstractFileFilter {
/** The filenames to search for */
private String[] names;
/**
* Constructs a new name file filter for a single name.
*
* @param name the name to allow, must not be null
* @throws IllegalArgumentException if the prefix is null
*/
public NameFileFilter(String name) {
if (name == null) {
throw new IllegalArgumentException("The name must not be null");
}
this.names = new String[] {name};
}
/**
* Constructs a new name file filter for any of an array of names.
* <p>
* The array is not cloned, so could be changed after constructing the
* instance. This would be inadvisable however.
*
* @param names the names to allow, must not be null
* @throws IllegalArgumentException if the names array is null
*/
public NameFileFilter(String[] names) {
if (names == null) {
throw new IllegalArgumentException("The array of names must not be null");
}
this.names = names;
}
/**
* Constructs a new name file filter for a list of names.
*
* @param names the names to allow, must not be null
* @throws IllegalArgumentException if the name list is null
* @throws ClassCastException if the list does not contain Strings
*/
public NameFileFilter(List names) {
if (names == null) {
throw new IllegalArgumentException("The list of names must not be null");
}
this.names = (String[]) names.toArray(new String[names.size()]);
}
/**
* Checks to see if the filename matches.
*
* @param file the File to check
* @return true if the filename matches
*/
public boolean accept(File file) {
String name = file.getName();
for (int i = 0; i < this.names.length; i++) {
if (name.equals(this.names[i])) {
return true;
}
}
return false;
}
/**
* Checks to see if the filename matches.
*
* @param file the File directory
* @param name the filename
* @return true if the filename matches
*/
public boolean accept(File file, String name) {
for (int i = 0; i < this.names.length; i++) {
if (name.equals(this.names[i])) {
return true;
}
}
return false;
}
}
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