1 /*
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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
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8  * particular file as subject to the "Classpath" exception as provided
9  * by Oracle in the LICENSE file that accompanied this code.
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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
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19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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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 {
DefaultFileSystemProvider()37     private DefaultFileSystemProvider() { }
38 
39     @SuppressWarnings("unchecked")
createProvider(String cn)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      */
create()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