001/** 002 * 003 * Copyright (c) 2014, the Railo Company Ltd. All rights reserved. 004 * 005 * This library is free software; you can redistribute it and/or 006 * modify it under the terms of the GNU Lesser General Public 007 * License as published by the Free Software Foundation; either 008 * version 2.1 of the License, or (at your option) any later version. 009 * 010 * This library is distributed in the hope that it will be useful, 011 * but WITHOUT ANY WARRANTY; without even the implied warranty of 012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 013 * Lesser General Public License for more details. 014 * 015 * You should have received a copy of the GNU Lesser General Public 016 * License along with this library. If not, see <http://www.gnu.org/licenses/>. 017 * 018 **/ 019package lucee.loader.util; 020 021 022import java.io.File; 023import java.io.FileFilter; 024 025/** 026 * Filter fuer die <code>listFiles</code> Methode des FIle Objekt, 027 * zum filtern von FIles mit einer bestimmten Extension. 028 */ 029public final class ExtensionFilter implements FileFilter { 030 031 private final String[] extensions; 032 private final boolean allowDir; 033 private final boolean ignoreCase; 034 //private int extLen; 035 036 037 /** 038 * Konstruktor des Filters 039 * @param extension Endung die geprueft werden soll. 040 */ 041 public ExtensionFilter(String extension) { 042 this(new String[]{extension},false,true); 043 } 044 045 /** 046 * Konstruktor des Filters 047 * @param extension Endung die geprueft werden soll. 048 */ 049 public ExtensionFilter(String extension, boolean allowDir) { 050 this(new String[]{extension},allowDir,true); 051 } 052 053 public ExtensionFilter(String[] extensions) { 054 this(extensions,false,true); 055 } 056 057 public ExtensionFilter(String[] extensions, boolean allowDir) { 058 this(extensions,allowDir,true); 059 } 060 061 062 public ExtensionFilter(String[] extensions, boolean allowDir, boolean ignoreCase) { 063 for(int i=0;i<extensions.length;i++) { 064 if(!extensions[i].startsWith(".")) 065 extensions[i]="."+extensions[i]; 066 if(ignoreCase)extensions[i]=extensions[i].toLowerCase(); 067 } 068 this.extensions=extensions; 069 this.allowDir=allowDir; 070 this.ignoreCase=ignoreCase; 071 } 072 073 /** 074 * @see java.io.FileFilter#accept(java.io.File) 075 */ 076 public boolean accept(File res) { 077 if(res.isDirectory()) return allowDir; 078 if(res.exists()) { 079 String name=ignoreCase?res.getName().toLowerCase():res.getName(); 080 for(int i=0;i<extensions.length;i++) { 081 if(name.endsWith(extensions[i])) 082 return true; 083 } 084 } 085 return false; 086 } 087 088 /** 089 * @return Returns the extension. 090 */ 091 public String[] getExtensions() { 092 return extensions; 093 } 094}