001 /** 002 * Copyright (c) 2000-2013 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 @Override 036 public boolean accept(File file) { 037 if (file.isFile()) { 038 if (_pattern == null) { 039 return true; 040 } 041 042 Matcher matcher = _pattern.matcher(file.getName()); 043 044 return matcher.matches(); 045 } 046 else { 047 return false; 048 } 049 } 050 051 private Pattern _pattern; 052 053 }