/*
 * Copyright (c) 2015, 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.io.IOException;
import java.nio.file.Path;
import java.security.AccessController;
import java.security.PrivilegedAction;

/**
 * File type detector that uses a file extension to look up its MIME type
 * via the Apple Uniform Type Identifier interfaces.
 */
class UTIFileTypeDetector extends AbstractFileTypeDetector {
    UTIFileTypeDetector() {
        super();
    }

    private native String probe0(String fileExtension) throws IOException;

    @Override
    protected String implProbeContentType(Path path) throws IOException {
        Path fn = path.getFileName();
        if (fn == null)
            return null;  // no file name

        String ext = getExtension(fn.toString());
        if (ext.isEmpty())
            return null;  // no extension

        return probe0(ext);
    }

    static {
        AccessController.doPrivileged(new PrivilegedAction<>() {
            @Override
            public Void run() {
                System.loadLibrary("nio");
                return null;
            }
        });
    }
}
