001/* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.apache.wicket.resource; 018 019import java.io.IOException; 020import java.net.URI; 021import java.net.URISyntaxException; 022import java.nio.file.FileSystem; 023import java.nio.file.FileSystems; 024import java.nio.file.Path; 025import java.util.HashMap; 026import java.util.Map; 027 028import org.apache.wicket.Application; 029import org.apache.wicket.MetaDataKey; 030import org.apache.wicket.WicketRuntimeException; 031 032/** 033 * Gets the actual path for a jar file system 034 * 035 * @author Tobias Soloschenko 036 * 037 */ 038public class FileSystemJarPathService implements FileSystemPathService 039{ 040 041 /** The key for the file system meta data **/ 042 public static final MetaDataKey<Map<String, FileSystem>> FILE_SYSTEM_META_DATA_KEY = new MetaDataKey<>() 043 { 044 private static final long serialVersionUID = 1L; 045 }; 046 047 @Override 048 public Path getPath(URI uri, Map<String, String> env) 049 { 050 try 051 { 052 String uriString = uri.toString(); 053 int indexOfExclamationMark = uriString.indexOf('!'); 054 String jarFile = uriString.substring(0, indexOfExclamationMark); 055 FileSystem fileSystem = null; 056 057 synchronized (FILE_SYSTEM_META_DATA_KEY) 058 { 059 Map<String, FileSystem> metaData = Application.get() 060 .getMetaData(FILE_SYSTEM_META_DATA_KEY); 061 if (metaData == null) 062 { 063 metaData = new HashMap<String, FileSystem>(); 064 Application.get().setMetaData(FILE_SYSTEM_META_DATA_KEY, metaData); 065 } 066 fileSystem = metaData.get(jarFile); 067 if (fileSystem == null) 068 { 069 if (env == null) 070 { 071 env = new HashMap<>(); 072 env.put("create", "true"); 073 env.put("encoding", "UTF-8"); 074 } 075 fileSystem = FileSystems.newFileSystem(new URI(jarFile), env); 076 metaData.put(jarFile, fileSystem); 077 } 078 } 079 String fileName = uriString.substring(uriString.indexOf('!') + 1); 080 081 return fileSystem.getPath(fileName); 082 } 083 catch (IOException | URISyntaxException e) 084 { 085 throw new WicketRuntimeException("Error while creating a jar file system", e); 086 } 087 } 088 089 @Override 090 public boolean isResponsible(URI uri) 091 { 092 return uri.getScheme().equals("jar") && uri.toString().indexOf('!') != -1; 093 } 094}