893N/A/*
3909N/A * Copyright (c) 2008, 2011, Oracle and/or its affiliates. All rights reserved.
893N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
893N/A *
893N/A * This code is free software; you can redistribute it and/or modify it
893N/A * under the terms of the GNU General Public License version 2 only, as
2362N/A * published by the Free Software Foundation. Oracle designates this
893N/A * particular file as subject to the "Classpath" exception as provided
2362N/A * by Oracle in the LICENSE file that accompanied this code.
893N/A *
893N/A * This code is distributed in the hope that it will be useful, but WITHOUT
893N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
893N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
893N/A * version 2 for more details (a copy is included in the LICENSE file that
893N/A * accompanied this code).
893N/A *
893N/A * You should have received a copy of the GNU General Public License version
893N/A * 2 along with this work; if not, write to the Free Software Foundation,
893N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
893N/A *
2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
2362N/A * or visit www.oracle.com if you need additional information or have any
2362N/A * questions.
893N/A */
893N/A
893N/Apackage sun.nio.fs;
893N/A
893N/Aimport java.nio.file.*;
893N/Aimport java.io.IOException;
893N/Aimport java.security.AccessController;
893N/Aimport java.security.PrivilegedAction;
893N/A
893N/A/**
893N/A * File type detector that does lookup of file extension using Windows Registry.
893N/A */
893N/A
893N/Apublic class RegistryFileTypeDetector
893N/A extends AbstractFileTypeDetector
893N/A{
893N/A public RegistryFileTypeDetector() {
893N/A super();
893N/A }
893N/A
893N/A @Override
3471N/A public String implProbeContentType(Path file) throws IOException {
893N/A if (!(file instanceof Path))
893N/A return null;
893N/A
893N/A // get file extension
3471N/A Path name = file.getFileName();
893N/A if (name == null)
893N/A return null;
893N/A String filename = name.toString();
893N/A int dot = filename.lastIndexOf('.');
893N/A if ((dot < 0) || (dot == (filename.length()-1)))
893N/A return null;
893N/A
893N/A // query HKEY_CLASSES_ROOT\<ext>
893N/A String key = filename.substring(dot);
893N/A NativeBuffer keyBuffer = WindowsNativeDispatcher.asNativeBuffer(key);
893N/A NativeBuffer nameBuffer = WindowsNativeDispatcher.asNativeBuffer("Content Type");
893N/A try {
893N/A return queryStringValue(keyBuffer.address(), nameBuffer.address());
893N/A } finally {
893N/A nameBuffer.release();
893N/A keyBuffer.release();
893N/A }
893N/A }
893N/A
893N/A private static native String queryStringValue(long subKey, long name);
893N/A
893N/A static {
893N/A AccessController.doPrivileged(new PrivilegedAction<Void>() {
893N/A @Override
893N/A public Void run() {
893N/A // nio.dll has dependency on net.dll
893N/A System.loadLibrary("net");
893N/A System.loadLibrary("nio");
893N/A return null;
893N/A }});
893N/A }
893N/A}