| /* |
| * 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.provider.res; |
| |
| import org.apache.commons.vfs.Capability; |
| import org.apache.commons.vfs.FileObject; |
| import org.apache.commons.vfs.FileSystem; |
| import org.apache.commons.vfs.FileSystemConfigBuilder; |
| import org.apache.commons.vfs.FileSystemException; |
| import org.apache.commons.vfs.FileSystemOptions; |
| import org.apache.commons.vfs.provider.AbstractFileProvider; |
| import org.apache.commons.vfs.provider.UriParser; |
| |
| import java.net.URL; |
| import java.util.Arrays; |
| import java.util.Collection; |
| import java.util.Collections; |
| |
| /** |
| * The Resource provider. |
| * |
| * @author <a href="mailto:imario@apache.org">Mario Ivankovits</a> |
| * @version $Revision$ $Date$ |
| */ |
| public class ResourceFileProvider extends AbstractFileProvider |
| { |
| /** The provider's capabilities */ |
| protected static final Collection capabilities = Collections.unmodifiableCollection(Arrays.asList(new Capability[] |
| { |
| Capability.DISPATCHER |
| })); |
| |
| public ResourceFileProvider() |
| { |
| super(); |
| } |
| |
| /** |
| * Locates a file object, by absolute URI. |
| * @param baseFile The base file. |
| * @param uri The URI of the file to locate. |
| * @param fileSystemOptions The FileSystem options. |
| * @return the FileObject. |
| * @throws FileSystemException if an error occurs. |
| */ |
| public FileObject findFile(final FileObject baseFile, |
| final String uri, |
| final FileSystemOptions fileSystemOptions) |
| throws FileSystemException |
| { |
| StringBuffer buf = new StringBuffer(80); |
| UriParser.extractScheme(uri, buf); |
| String resourceName = buf.toString(); |
| |
| ClassLoader cl = ResourceFileSystemConfigBuilder.getInstance().getClassLoader(fileSystemOptions); |
| if (cl == null) |
| { |
| cl = getClass().getClassLoader(); |
| } |
| final URL url = cl.getResource(resourceName); |
| |
| if (url == null) |
| { |
| throw new FileSystemException("vfs.provider.url/badly-formed-uri.error", uri); |
| } |
| |
| FileObject fo = getContext().getFileSystemManager().resolveFile(url.toExternalForm()); |
| return fo; |
| } |
| |
| public FileSystemConfigBuilder getConfigBuilder() |
| { |
| return org.apache.commons.vfs.provider.res.ResourceFileSystemConfigBuilder.getInstance(); |
| } |
| |
| public void closeFileSystem(FileSystem filesystem) |
| { |
| // no filesystem created here - so nothing to do |
| } |
| |
| public Collection getCapabilities() |
| { |
| return capabilities; |
| } |
| } |