1 /***************************************************************** 2 * Licensed to the Apache Software Foundation (ASF) under one * 3 * or more contributor license agreements. See the NOTICE file * 4 * distributed with this work for additional information * 5 * regarding copyright ownership. The ASF licenses this file * 6 * to you under the Apache License, Version 2.0 (the * 7 * "License"); you may not use this file except in compliance * 8 * with the License. You may obtain a copy of the License at * 9 * * 10 * http://www.apache.org/licenses/LICENSE-2.0 * 11 * * 12 * Unless required by applicable law or agreed to in writing, * 13 * software distributed under the License is distributed on an * 14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * 15 * KIND, either express or implied. See the License for the * 16 * specific language governing permissions and limitations * 17 * under the License. * 18 ****************************************************************/ 19 20 package org.apache.james.util.io; 21 22 import java.io.File; 23 import java.io.FilenameFilter; 24 25 /*** 26 * This filters files based on the extension (what the filename 27 * ends with). This is used in retrieving all the files of a 28 * particular type. 29 * 30 * <p>Eg., to retrieve and print all <code>*.java</code> files in the current directory:</p> 31 * 32 * <pre> 33 * File dir = new File("."); 34 * String[] files = dir.list( new ExtensionFileFilter( new String[]{"java"} ) ); 35 * for (int i=0; i<files.length; i++) 36 * { 37 * System.out.println(files[i]); 38 * } 39 * </pre> 40 * 41 * @author Federico Barbieri <fede@apache.org> 42 * @author Serge Knystautas <sergek@lokitech.com> 43 * @author Peter Donald 44 * @version CVS $Revision: 494012 $ $Date: 2007-01-08 10:23:58 +0000 (Mon, 08 Jan 2007) $ 45 * @since 4.0 46 */ 47 public class ExtensionFileFilter 48 implements FilenameFilter 49 { 50 private String[] m_extensions; 51 52 public ExtensionFileFilter( final String[] extensions ) 53 { 54 m_extensions = extensions; 55 } 56 57 public ExtensionFileFilter( final String extension ) 58 { 59 m_extensions = new String[]{extension}; 60 } 61 62 public boolean accept( final File file, final String name ) 63 { 64 for( int i = 0; i < m_extensions.length; i++ ) 65 { 66 if( name.endsWith( m_extensions[ i ] ) ) 67 { 68 return true; 69 } 70 } 71 return false; 72 } 73 } 74 75