/*

 * 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.

 *

 * 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.

 *

 */

import java.nio.file.*;

import static java.nio.file.StandardOpenOption.*;

import java.io.*;

import java.util.*;

public class DeleteOnClose {

    public static void main(String[] args) throws IOException {

        // open file but do not close it. Its existance will be checked by

        // the calling script.

        Paths.get(args[0]).newByteChannel(READ, WRITE, DELETE_ON_CLOSE);

        // check temporary file has been deleted after closing it

        Path file = File.createTempFile("blah", "tmp").toPath();

        file.newByteChannel(READ, WRITE, DELETE_ON_CLOSE).close();

        if (file.exists())

            throw new RuntimeException("Temporary file was not deleted");

        Path dir = TestUtil.createTemporaryDirectory();

        try {

            // check that DELETE_ON_CLOSE fails when file is a sym link

            if (TestUtil.supportsLinks(dir)) {

                file = dir.resolve("foo").createFile();

                Path link = dir.resolve("link").createSymbolicLink(file);

                try {

                    link.newByteChannel(READ, WRITE, DELETE_ON_CLOSE);

                    throw new RuntimeException("IOException expected");

                } catch (IOException ignore) { }

            }

            // check that DELETE_ON_CLOSE works with files created via open

            // directories

            DirectoryStream stream = dir.newDirectoryStream();

            try {

                if (stream instanceof SecureDirectoryStream) {

                    SecureDirectoryStream secure = (SecureDirectoryStream)stream;

                    file = Paths.get("foo");

                    Set<OpenOption> opts = new HashSet<OpenOption>();

                    opts.add(WRITE);

                    opts.add(DELETE_ON_CLOSE);

                    secure.newByteChannel(file, opts).close();

                    if (dir.resolve(file).exists())

                        throw new RuntimeException("File not deleted");

                }

            } finally {

                stream.close();

            }

        } finally {

            TestUtil.removeAll(dir);

        }

    }

}