/*

 * Copyright (c) 2002, 2010, 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.

 *

 * 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.

 */

/* @test

 * @bug 4738257 4853295

 * @summary Test Util.getTemporaryBuffer

 */

import java.io.*;

import java.nio.channels.*;

import java.nio.*;

public class TempBuffer {

    private static final int SIZE = 4000;

    private static final int ITERATIONS = 10;

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

        for (int i=0; i<ITERATIONS; i++)

            testTempBufs();

    }

    private static void testTempBufs() throws Exception {

        Pipe pipe = Pipe.open();

        Pipe.SourceChannel sourceChannel = pipe.source();

        final Pipe.SinkChannel sinkChannel = pipe.sink();

        Thread writerThread = new Thread() {

            public void run() {

                try {

                    OutputStream out = Channels.newOutputStream(sinkChannel);

                    File blah = File.createTempFile("blah1", null);

                    blah.deleteOnExit();

                    TempBuffer.initTestFile(blah);

                    RandomAccessFile raf = new RandomAccessFile(blah, "rw");

                    FileChannel fc = raf.getChannel();

                    try {

                        fc.transferTo(0, SIZE, Channels.newChannel(out));

                    } finally {

                        fc.close();

                    }

                    out.flush();

                } catch (IOException ioe) {

                    throw new RuntimeException(ioe);

                }

            }

        };

        writerThread.start();

        InputStream in = Channels.newInputStream(sourceChannel);

        File blah = File.createTempFile("blah2", null);

        blah.deleteOnExit();

        RandomAccessFile raf = new RandomAccessFile(blah, "rw");

        FileChannel fc = raf.getChannel();

        try {

            raf.setLength(SIZE);

            fc.transferFrom(Channels.newChannel(in), 0, SIZE);

        } finally {

            fc.close();

        }

        sourceChannel.close();

        sinkChannel.close();

        blah.delete();

    }

    private static void initTestFile(File blah) throws IOException {

        FileOutputStream fos = new FileOutputStream(blah);

        BufferedWriter awriter

            = new BufferedWriter(new OutputStreamWriter(fos, "8859_1"));

        for(int i=0; i<4000; i++) {

            String number = new Integer(i).toString();

            for (int h=0; h<4-number.length(); h++)

                awriter.write("0");

            awriter.write(""+i);

            awriter.newLine();

        }

       awriter.flush();

       awriter.close();

    }

}