/*

 * Copyright (c) 2011, 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.

 */

import java.util.*;

import java.nio.*;

import java.nio.charset.*;

public class StrCodingBenchmarkUTF8 {

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

        final int itrs = Integer.getInteger("iterations", 100000);

        final int size = 2048;

        final int subsize    = Integer.getInteger("subsize", 128);

        final Random rnd = new Random();

        final int maxchar    = 0x7f;

        Charset charset = Charset.forName("UTF-8");

        final String csn = charset.name();

        final Charset cs = charset;

        int[] starts = new int[] { 0, 0x80, 0x800, 0x10000};

        for (int nb = 1; nb <= 4; nb++) {

            final CharsetEncoder enc = cs.newEncoder();

            char[] cc = new char[size];

            int i = 0;

            while (i < size - 3) {

                i += Character.toChars(starts[nb - 1] + rnd.nextInt(maxchar), cc, i);

            }

            final String string = new String(cc);

            final byte[] bytes  = string.getBytes(cs);

            System.out.printf("%n--------%s[nb=%d]---------%n", csn, nb);

            int sz = 12;

            while (sz < size) {

                System.out.printf("   [len=%d]%n", sz);

                final byte[] bs  = Arrays.copyOf(bytes, sz);

                final String str = new String(bs, csn);

                StrCodingBenchmark.Job[] jobs = {

                    new StrCodingBenchmark.Job("String decode: csn") {

                    public void work() throws Throwable {

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

                            new String(bs, csn);

                    }},

                    new StrCodingBenchmark.Job("String decode: cs") {

                    public void work() throws Throwable {

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

                            new String(bs, cs);

                    }},

                    new StrCodingBenchmark.Job("String encode: csn") {

                    public void work() throws Throwable {

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

                                str.getBytes(csn);

                    }},

                    new StrCodingBenchmark.Job("String encode: cs") {

                    public void work() throws Throwable {

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

                          str.getBytes(cs);

                    }},

                };

                StrCodingBenchmark.time(StrCodingBenchmark.filter(null, jobs));

                sz <<= 1;

            }

        }

    }

}