1 /*****************************************************************
2 * Licensed to the Apache Software Foundation (ASF) under one *
3 * or more contributor license agreements. See the NOTICE file *
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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 *
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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. *
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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 (lun, 08 gen 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