| /* |
| * 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.vfs2.provider; |
| |
| import java.util.Arrays; |
| |
| import org.apache.commons.vfs2.FileObject; |
| import org.apache.commons.vfs2.FileSystemException; |
| import org.apache.commons.vfs2.FileSystemOptions; |
| |
| /** |
| * Description. |
| */ |
| public abstract class CompositeFileProvider extends AbstractFileProvider { |
| |
| private static final int INITIAL_BUFSZ = 80; |
| |
| public CompositeFileProvider() { |
| } |
| |
| /** |
| * The schemes known. |
| * |
| * @return Array of supported schemes. |
| */ |
| protected abstract String[] getSchemes(); |
| |
| /** |
| * Locates a file object, by absolute URI. |
| * |
| * @param baseFile The base FileObject. |
| * @param uri The file to find. |
| * @param fileSystemOptions The options for the FileSystem. |
| * @return A FileObject for the located file. |
| * @throws FileSystemException if an error occurs. |
| */ |
| @Override |
| public FileObject findFile(final FileObject baseFile, final String uri, final FileSystemOptions fileSystemOptions) |
| throws FileSystemException { |
| final StringBuilder buf = new StringBuilder(INITIAL_BUFSZ); |
| |
| UriParser.extractScheme(getContext().getFileSystemManager().getSchemes(), uri, buf); |
| Arrays.stream(getSchemes()).forEach(scheme -> buf.insert(0, scheme + ":")); |
| |
| return getContext().getFileSystemManager().resolveFile(buf.toString(), fileSystemOptions); |
| } |
| } |