src/java.base/linux/classes/sun/nio/fs/LinuxFileSystemProvider.java
author bpb
Thu, 22 Mar 2018 12:30:47 -0700
changeset 49285 4d2e3f5abb48
parent 47216 71c04702a3d5
child 50817 fa1e04811ff6
permissions -rw-r--r--
8194746: (fs) Add equivalents of Paths.get to Path interface Summary: Copy Paths.get() methods to Path.get() methods and have former call latter Reviewed-by: alanb, forax, chegar, psandoz
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/*
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 * Copyright (c) 2008, 2018, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.  Oracle designates this
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 * particular file as subject to the "Classpath" exception as provided
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 * by Oracle in the LICENSE file that accompanied this code.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 */
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package sun.nio.fs;
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import java.nio.file.*;
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import java.nio.file.attribute.*;
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import java.nio.file.spi.FileTypeDetector;
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import java.io.IOException;
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import java.security.AccessController;
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import sun.security.action.GetPropertyAction;
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/**
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 * Linux implementation of FileSystemProvider
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 */
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public class LinuxFileSystemProvider extends UnixFileSystemProvider {
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    public LinuxFileSystemProvider() {
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        super();
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    }
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    @Override
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    LinuxFileSystem newFileSystem(String dir) {
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        return new LinuxFileSystem(this, dir);
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    }
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    @Override
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    LinuxFileStore getFileStore(UnixPath path) throws IOException {
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        return new LinuxFileStore(path);
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    }
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    @Override
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    @SuppressWarnings("unchecked")
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    public <V extends FileAttributeView> V getFileAttributeView(Path obj,
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                                                                Class<V> type,
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                                                                LinkOption... options)
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    {
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        if (type == DosFileAttributeView.class) {
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            return (V) new LinuxDosFileAttributeView(UnixPath.toUnixPath(obj),
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                                                     Util.followLinks(options));
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        }
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        if (type == UserDefinedFileAttributeView.class) {
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            return (V) new LinuxUserDefinedFileAttributeView(UnixPath.toUnixPath(obj),
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                                                             Util.followLinks(options));
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        }
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        return super.getFileAttributeView(obj, type, options);
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    }
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    @Override
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    public DynamicFileAttributeView getFileAttributeView(Path obj,
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                                                         String name,
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                                                         LinkOption... options)
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    {
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        if (name.equals("dos")) {
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            return new LinuxDosFileAttributeView(UnixPath.toUnixPath(obj),
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                                                 Util.followLinks(options));
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        }
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        if (name.equals("user")) {
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            return new LinuxUserDefinedFileAttributeView(UnixPath.toUnixPath(obj),
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                                                         Util.followLinks(options));
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        }
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        return super.getFileAttributeView(obj, name, options);
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    }
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    @Override
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    @SuppressWarnings("unchecked")
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    public <A extends BasicFileAttributes> A readAttributes(Path file,
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                                                            Class<A> type,
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                                                            LinkOption... options)
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        throws IOException
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    {
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        if (type == DosFileAttributes.class) {
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            DosFileAttributeView view =
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                getFileAttributeView(file, DosFileAttributeView.class, options);
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            return (A) view.readAttributes();
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        } else {
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            return super.readAttributes(file, type, options);
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        }
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    }
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    @Override
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    FileTypeDetector getFileTypeDetector() {
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        String userHome = GetPropertyAction.privilegedGetProperty("user.home");
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        Path userMimeTypes = Path.of(userHome, ".mime.types");
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        Path etcMimeTypes = Path.of("/etc/mime.types");
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        return chain(new MimeTypesFileTypeDetector(userMimeTypes),
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                     new MimeTypesFileTypeDetector(etcMimeTypes));
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    }
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}