1 /*

     2  * Copyright (c) 2008, 2012, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    25 

    26 package sun.nio.fs;

    27 

    28 import java.nio.file.spi.FileSystemProvider;

    29 import java.security.AccessController;

    30 import sun.security.action.GetPropertyAction;

    31 

    32 /**

    33  * Creates this platform's default FileSystemProvider.

    34  */

    35 

    36 public class DefaultFileSystemProvider {

    37     private DefaultFileSystemProvider() { }

    38 

    39     @SuppressWarnings("unchecked")

    40     private static FileSystemProvider createProvider(String cn) {

    41         Class<FileSystemProvider> c;

    42         try {

    43             c = (Class<FileSystemProvider>)Class.forName(cn);

    44         } catch (ClassNotFoundException x) {

    45             throw new AssertionError(x);

    46         }

    47         try {

    48             return c.newInstance();

    49         } catch (IllegalAccessException | InstantiationException x) {

    50             throw new AssertionError(x);

    51         }

    52     }

    53 

    54     /**

    55      * Returns the default FileSystemProvider.

    56      */

    57     public static FileSystemProvider create() {

    58         String osname = AccessController

    59             .doPrivileged(new GetPropertyAction("os.name"));

    60         if (osname.equals("SunOS"))

    61             return createProvider("sun.nio.fs.SolarisFileSystemProvider");

    62         if (osname.equals("Linux"))

    63             return createProvider("sun.nio.fs.LinuxFileSystemProvider");

    64         if (osname.contains("OS X"))

    65             return createProvider("sun.nio.fs.MacOSXFileSystemProvider");

    66         if (osname.equals("AIX"))

    67             return createProvider("sun.nio.fs.AixFileSystemProvider");

    68         throw new AssertionError("Platform not recognized");

    69     }

    70 }