/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.wicket.resource;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.nio.file.FileSystem;
import java.nio.file.FileSystems;
import java.nio.file.Path;
import java.util.HashMap;
import java.util.Map;
import org.apache.wicket.Application;
import org.apache.wicket.MetaDataKey;
import org.apache.wicket.WicketRuntimeException;
/**
* Gets the actual path for a jar file system
*
* @author Tobias Soloschenko
*
*/
public class FileSystemJarPathService implements FileSystemPathService
{
/** The key for the file system meta data **/
public static final MetaDataKey<Map<String, FileSystem>> FILE_SYSTEM_META_DATA_KEY = new MetaDataKey<Map<String, FileSystem>>()
{
private static final long serialVersionUID = 1L;
};
@Override
public Path getPath(URI uri, Map<String, String> env)
{
try
{
String uriString = uri.toString();
int indexOfExclamationMark = uriString.indexOf('!');
String jarFile = uriString.substring(0, indexOfExclamationMark);
FileSystem fileSystem = null;
synchronized (FILE_SYSTEM_META_DATA_KEY)
{
Map<String, FileSystem> metaData = Application.get()
.getMetaData(FILE_SYSTEM_META_DATA_KEY);
if (metaData == null)
{
metaData = new HashMap<String, FileSystem>();
Application.get().setMetaData(FILE_SYSTEM_META_DATA_KEY, metaData);
}
fileSystem = metaData.get(jarFile);
if (fileSystem == null)
{
if (env == null)
{
env = new HashMap<>();
env.put("create", "true");
env.put("encoding", "UTF-8");
}
fileSystem = FileSystems.newFileSystem(new URI(jarFile), env);
metaData.put(jarFile, fileSystem);
}
}
String fileName = uriString.substring(uriString.indexOf('!') + 1);
return fileSystem.getPath(fileName);
}
catch (IOException | URISyntaxException e)
{
throw new WicketRuntimeException("Error while creating a jar file system", e);
}
}
@Override
public boolean isResponsible(URI uri)
{
return uri.getScheme().equals("jar") && uri.toString().indexOf('!') != -1;
}
}