| /* |
| * Copyright 2008-2009 Sun Microsystems, Inc. All Rights Reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Sun designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Sun in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| * CA 95054 USA or visit www.sun.com if you need additional information or |
| * have any questions. |
| */ |
| |
| package sun.nio.fs; |
| |
| import java.nio.file.*; |
| import java.nio.file.attribute.*; |
| import java.nio.file.spi.FileSystemProvider; |
| import java.nio.channels.*; |
| import java.net.URI; |
| import java.util.concurrent.ExecutorService; |
| import java.io.IOException; |
| import java.util.*; |
| |
| import sun.nio.ch.ThreadPool; |
| |
| /** |
| * Base implementation of FileSystemProvider |
| */ |
| |
| public abstract class UnixFileSystemProvider |
| extends FileSystemProvider |
| { |
| private static final String USER_DIR = "user.dir"; |
| private final UnixFileSystem theFileSystem; |
| |
| public UnixFileSystemProvider() { |
| String userDir = System.getProperty(USER_DIR); |
| theFileSystem = newFileSystem(userDir); |
| } |
| |
| /** |
| * Constructs a new file system using the given default directory. |
| */ |
| abstract UnixFileSystem newFileSystem(String dir); |
| |
| @Override |
| public final String getScheme() { |
| return "file"; |
| } |
| |
| private void checkUri(URI uri) { |
| if (!uri.getScheme().equalsIgnoreCase(getScheme())) |
| throw new IllegalArgumentException("URI does not match this provider"); |
| if (uri.getAuthority() != null) |
| throw new IllegalArgumentException("Authority component present"); |
| if (uri.getPath() == null) |
| throw new IllegalArgumentException("Path component is undefined"); |
| if (!uri.getPath().equals("/")) |
| throw new IllegalArgumentException("Path component should be '/'"); |
| if (uri.getQuery() != null) |
| throw new IllegalArgumentException("Query component present"); |
| if (uri.getFragment() != null) |
| throw new IllegalArgumentException("Fragment component present"); |
| } |
| |
| @Override |
| public final FileSystem newFileSystem(URI uri, Map<String,?> env) { |
| checkUri(uri); |
| throw new FileSystemAlreadyExistsException(); |
| } |
| |
| @Override |
| public final FileSystem getFileSystem(URI uri) { |
| checkUri(uri); |
| return theFileSystem; |
| } |
| |
| @Override |
| public Path getPath(URI uri) { |
| return UnixUriUtils.fromUri(theFileSystem, uri); |
| } |
| |
| private UnixPath checkPath(Path obj) { |
| if (obj == null) |
| throw new NullPointerException(); |
| if (!(obj instanceof UnixPath)) |
| throw new ProviderMismatchException(); |
| return (UnixPath)obj; |
| } |
| |
| @Override |
| public final FileChannel newFileChannel(Path obj, |
| Set<? extends OpenOption> options, |
| FileAttribute<?>... attrs) |
| throws IOException |
| { |
| UnixPath file = checkPath(obj); |
| int mode = UnixFileModeAttribute |
| .toUnixMode(UnixFileModeAttribute.ALL_READWRITE, attrs); |
| try { |
| return UnixChannelFactory.newFileChannel(file, options, mode); |
| } catch (UnixException x) { |
| x.rethrowAsIOException(file); |
| return null; |
| } |
| } |
| |
| @Override |
| public final AsynchronousFileChannel newAsynchronousFileChannel(Path obj, |
| Set<? extends OpenOption> options, |
| ExecutorService executor, |
| FileAttribute<?>... attrs) throws IOException |
| { |
| UnixPath file = checkPath(obj); |
| int mode = UnixFileModeAttribute |
| .toUnixMode(UnixFileModeAttribute.ALL_READWRITE, attrs); |
| ThreadPool pool = (executor == null) ? null : ThreadPool.wrap(executor, 0); |
| try { |
| return UnixChannelFactory |
| .newAsynchronousFileChannel(file, options, mode, pool); |
| } catch (UnixException x) { |
| x.rethrowAsIOException(file); |
| return null; |
| } |
| } |
| } |