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      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 }
     71