01: /****************************************************************
02: * Licensed to the Apache Software Foundation (ASF) under one *
03: * or more contributor license agreements. See the NOTICE file *
04: * distributed with this work for additional information *
05: * regarding copyright ownership. The ASF licenses this file *
06: * to you under the Apache License, Version 2.0 (the *
07: * "License"); you may not use this file except in compliance *
08: * with the License. You may obtain a copy of the License at *
09: * *
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: ****************************************************************/package org.apache.james.util.io;
19:
20: import java.io.File;
21: import java.io.FilenameFilter;
22:
23: /**
24: * This takes a <code>FilenameFilter<code> as input and inverts the selection.
25: * This is used in retrieving files that are not accepted by a filter.
26: *
27: * @author <a href="mailto:dev@avalon.apache.org">Avalon Development Team</a>
28: * @version CVS $Revision: 494012 $ $Date: 2007-01-08 11:23:58 +0100 (Mo, 08 Jan 2007) $
29: * @since 4.0
30: */
31: public class InvertedFileFilter implements FilenameFilter {
32: private final FilenameFilter m_originalFilter;
33:
34: public InvertedFileFilter(final FilenameFilter originalFilter) {
35: m_originalFilter = originalFilter;
36: }
37:
38: public boolean accept(final File file, final String name) {
39: return !m_originalFilter.accept(file, name);
40: }
41: }
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