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 21 22 package org.apache.james.util.io; 23 24 import java.io.File; 25 import java.io.FilenameFilter; 26 27 /** 28 * This filters files based on the extension (what the filename 29 * ends with). This is used in retrieving all the files of a 30 * particular type. 31 * 32 * <p>Eg., to retrieve and print all <code>*.java</code> files in the current directory:</p> 33 * 34 * <pre> 35 * File dir = new File("."); 36 * String[] files = dir.list( new ExtensionFileFilter( new String[]{"java"} ) ); 37 * for (int i=0; i<files.length; i++) 38 * { 39 * System.out.println(files[i]); 40 * } 41 * </pre> 42 * 43 * @version CVS $Revision: 464742 $ $Date: 2006-10-17 00:53:00 +0100 (Tue, 17 Oct 2006) $ 44 */ 45 public class ExtensionFileFilter 46 implements FilenameFilter 47 { 48 private String[] m_extensions; 49 50 public ExtensionFileFilter( final String[] extensions ) 51 { 52 m_extensions = extensions; 53 } 54 55 public ExtensionFileFilter( final String extension ) 56 { 57 m_extensions = new String[]{extension}; 58 } 59 60 public boolean accept( final File file, final String name ) 61 { 62 for( int i = 0; i < m_extensions.length; i++ ) 63 { 64 if( name.endsWith( m_extensions[ i ] ) ) 65 { 66 return true; 67 } 68 } 69 return false; 70 } 71 } 72 73