001    /**
002     * Copyright (c) 2000-2012 Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portal.kernel.io;
016    
017    import java.io.File;
018    
019    import java.util.regex.Matcher;
020    import java.util.regex.Pattern;
021    
022    /**
023     * @author Brian Wing Shun Chan
024     * @author Alexander Chow
025     */
026    public class FileFilter implements java.io.FileFilter {
027    
028            public FileFilter() {
029            }
030    
031            public FileFilter(String regex) {
032                    _pattern = Pattern.compile(regex);
033            }
034    
035            public boolean accept(File file) {
036                    if (file.isFile()) {
037                            if (_pattern == null) {
038                                    return true;
039                            }
040                            else {
041                                    Matcher matcher = _pattern.matcher(file.getName());
042    
043                                    return matcher.matches();
044                            }
045                    }
046                    else {
047                            return false;
048                    }
049            }
050    
051            private Pattern _pattern;
052    
053    }