001    /**
002     * Copyright (c) 2000-2011 Liferay, Inc. All rights reserved.
003     *
004     * The contents of this file are subject to the terms of the Liferay Enterprise
005     * Subscription License ("License"). You may not use this file except in
006     * compliance with the License. You can obtain a copy of the License by
007     * contacting Liferay, Inc. See the License for the specific language governing
008     * permissions and limitations under the License, including but not limited to
009     * distribution rights of the Software.
010     *
011     *
012     *
013     */
014    
015    package com.liferay.portal.kernel.io;
016    
017    import java.io.File;
018    import java.io.FileFilter;
019    
020    import java.util.regex.Matcher;
021    import java.util.regex.Pattern;
022    
023    /**
024     * @author Brian Wing Shun Chan
025     * @author Alexander Chow
026     */
027    public class DirectoryFilter implements FileFilter {
028    
029            public DirectoryFilter() {
030            }
031    
032            public DirectoryFilter(String regex) {
033                    _pattern = Pattern.compile(regex);
034            }
035    
036            public boolean accept(File file) {
037                    if (file.isDirectory()) {
038                            if (_pattern == null) {
039                                    return true;
040                            }
041                            else {
042                                    Matcher matcher = _pattern.matcher(file.getName());
043    
044                                    return matcher.matches();
045                            }
046                    }
047                    else {
048                            return false;
049                    }
050            }
051    
052            private Pattern _pattern;
053    
054    }