8173982: (fs) DefaultFileSystemProvider should be split into platform specific versions

Reviewed-by: alanb

jdk/src/java.base/aix/classes/sun/nio/fs/DefaultFileSystemProvider.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2008, 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2017, Oracle and/or its affiliates. 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
@@ -26,7 +26,6 @@
 package sun.nio.fs;
 
 import java.nio.file.spi.FileSystemProvider;
-import sun.security.action.GetPropertyAction;
 
 /**
  * Creates this platform's default FileSystemProvider.
@@ -35,36 +34,10 @@ import sun.security.action.GetPropertyAction;
 public class DefaultFileSystemProvider {
     private DefaultFileSystemProvider() { }
 
-    @SuppressWarnings("unchecked")
-    private static FileSystemProvider createProvider(String cn) {
-        Class<FileSystemProvider> c;
-        try {
-            c = (Class<FileSystemProvider>)Class.forName(cn);
-        } catch (ClassNotFoundException x) {
-            throw new AssertionError(x);
-        }
-        try {
-            @SuppressWarnings("deprecation")
-            FileSystemProvider result = c.newInstance();
-            return result;
-        } catch (IllegalAccessException | InstantiationException x) {
-            throw new AssertionError(x);
-        }
-    }
-
     /**
      * Returns the default FileSystemProvider.
      */
     public static FileSystemProvider create() {
-        String osname = GetPropertyAction.privilegedGetProperty("os.name");
-        if (osname.equals("SunOS"))
-            return createProvider("sun.nio.fs.SolarisFileSystemProvider");
-        if (osname.equals("Linux"))
-            return createProvider("sun.nio.fs.LinuxFileSystemProvider");
-        if (osname.contains("OS X"))
-            return createProvider("sun.nio.fs.MacOSXFileSystemProvider");
-        if (osname.equals("AIX"))
-            return createProvider("sun.nio.fs.AixFileSystemProvider");
-        throw new AssertionError("Platform not recognized");
+        return new AixFileSystemProvider();
     }
 }

jdk/src/java.base/linux/classes/sun/nio/fs/DefaultFileSystemProvider.java

@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2017, Oracle and/or its affiliates. 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.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package sun.nio.fs;
+
+import java.nio.file.spi.FileSystemProvider;
+
+/**
+ * Creates this platform's default FileSystemProvider.
+ */
+
+public class DefaultFileSystemProvider {
+    private DefaultFileSystemProvider() { }
+
+    /**
+     * Returns the default FileSystemProvider.
+     */
+    public static FileSystemProvider create() {
+        return new LinuxFileSystemProvider();
+    }
+}

jdk/src/java.base/macosx/classes/sun/nio/fs/DefaultFileSystemProvider.java

@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2017, Oracle and/or its affiliates. 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.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package sun.nio.fs;
+
+import java.nio.file.spi.FileSystemProvider;
+
+/**
+ * Creates this platform's default FileSystemProvider.
+ */
+
+public class DefaultFileSystemProvider {
+    private DefaultFileSystemProvider() { }
+
+    /**
+     * Returns the default FileSystemProvider.
+     */
+    public static FileSystemProvider create() {
+        return new MacOSXFileSystemProvider();
+    }
+}

jdk/src/java.base/solaris/classes/sun/nio/fs/DefaultFileSystemProvider.java

@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2017, Oracle and/or its affiliates. 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.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package sun.nio.fs;
+
+import java.nio.file.spi.FileSystemProvider;
+
+/**
+ * Creates this platform's default FileSystemProvider.
+ */
+
+public class DefaultFileSystemProvider {
+    private DefaultFileSystemProvider() { }
+
+    /**
+     * Returns the default FileSystemProvider.
+     */
+    public static FileSystemProvider create() {
+        return new SolarisFileSystemProvider();
+    }
+}