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.commons.io.res.filter; 020 021 022import lucee.commons.io.res.Resource; 023import lucee.commons.lang.StringUtil; 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 ExtensionResourceFilter implements ResourceFilter { 030 031 private String[] extensions; 032 private final boolean allowDir; 033 private final boolean ignoreCase; 034 //private int extLen; 035 036 public static final ExtensionResourceFilter EXTENSION_JAR_NO_DIR = new ExtensionResourceFilter(".jar", false); 037 public static final ExtensionResourceFilter EXTENSION_CLASS_DIR = new ExtensionResourceFilter(".class", true); 038 039 040 /** 041 * Konstruktor des Filters 042 * @param extension Endung die geprueft werden soll. 043 */ 044 public ExtensionResourceFilter(String extension) { 045 this(new String[]{extension},false,true); 046 } 047 048 /** 049 * Konstruktor des Filters 050 * @param extension Endung die geprueft werden soll. 051 */ 052 public ExtensionResourceFilter(String extension, boolean allowDir) { 053 this(new String[]{extension},allowDir,true); 054 } 055 056 public ExtensionResourceFilter(String[] extensions) { 057 this(extensions,false,true); 058 } 059 060 public ExtensionResourceFilter(String[] extensions, boolean allowDir) { 061 this(extensions,allowDir,true); 062 } 063 064 065 public ExtensionResourceFilter(String[] extensions, boolean allowDir, boolean ignoreCase) { 066 String[] tmp=new String[extensions.length]; 067 for(int i=0;i<extensions.length;i++) { 068 if(!StringUtil.startsWith(extensions[i],'.')) 069 tmp[i]="."+extensions[i]; 070 else 071 tmp[i]=extensions[i]; 072 } 073 this.extensions=tmp; 074 this.allowDir=allowDir; 075 this.ignoreCase=ignoreCase; 076 } 077 078 public void addExtension(String extension) { 079 String[] tmp=new String[extensions.length+1]; 080 // add existing 081 for(int i=0;i<extensions.length;i++) { 082 tmp[i]=extensions[i]; 083 } 084 // add the new one 085 if(!StringUtil.startsWith(extension,'.')) 086 tmp[extensions.length]="."+extension; 087 else 088 tmp[extensions.length]=extension; 089 090 this.extensions=tmp; 091 } 092 093 @Override 094 public boolean accept(Resource res) { 095 if(res.isDirectory()) return allowDir; 096 if(res.exists()) { 097 String name=res.getName(); 098 for(int i=0;i<extensions.length;i++) { 099 if(ignoreCase){ 100 if(StringUtil.endsWithIgnoreCase(name,extensions[i])) 101 return true; 102 } 103 else { 104 if(name.endsWith(extensions[i])) 105 return true; 106 } 107 } 108 } 109 return false; 110 } 111 112 public boolean accept(String name) { 113 for(int i=0;i<extensions.length;i++) { 114 if(ignoreCase){ 115 if(StringUtil.endsWithIgnoreCase(name,extensions[i])) 116 return true; 117 } 118 else { 119 if(name.endsWith(extensions[i])) 120 return true; 121 } 122 } 123 124 return false; 125 } 126 127 /** 128 * @return Returns the extension. 129 */ 130 public String[] getExtensions() { 131 return extensions; 132 } 133}