/* * 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.commons.vfs.impl; import org.apache.commons.vfs.FileObject; import org.apache.commons.vfs.FileSystemException; import org.apache.commons.vfs.FileUtil; import java.io.IOException; import java.net.URL; import java.util.jar.Attributes; /** * Helper class for VFSClassLoader. This represents a resource loaded with * the classloader. * * @author <a href="mailto:brian@mmmanager.org">Brian Olsen</a> * @version $Revision: 480428 $ $Date: 2006-11-29 07:15:24 +0100 (Mi, 29 Nov 2006) $ * @see VFSClassLoader */ class Resource { private final FileObject root; private final FileObject resource; private final FileObject packageFolder; private final String packageName; /** * Creates a new instance. * * @param root The code source FileObject. * @param resource The resource of the FileObject. */ public Resource(final String name, final FileObject root, final FileObject resource) throws FileSystemException { this.root = root; this.resource = resource; packageFolder = resource.getParent(); final int pos = name.lastIndexOf('/'); if (pos == -1) { packageName = null; } else { packageName = name.substring(0, pos).replace('/', '.'); } } /** * Returns the URL of the resource. */ public URL getURL() throws FileSystemException { return resource.getURL(); } /** * Returns the name of the package containing the resource. */ public String getPackageName() { return packageName; } /** * Returns an attribute of the package containing the resource. */ public String getPackageAttribute(final Attributes.Name attrName) throws FileSystemException { return (String) packageFolder.getContent().getAttribute(attrName.toString()); } /** * Returns the folder for the package containing the resource. */ public FileObject getPackageFolder() { return packageFolder; } /** * Returns the FileObject of the resource. */ public FileObject getFileObject() { return resource; } /** * Returns the code source as an URL. */ public URL getCodeSourceURL() throws FileSystemException { return root.getURL(); } /** * Returns the data for this resource as a byte array. */ public byte[] getBytes() throws IOException { return FileUtil.getContent(resource); } }