/*

 * Copyright (c) 2018, 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 8211382

 * @summary Check GB18030

 * @modules jdk.charsets

 */

import java.io.*;

import java.nio.*;

import java.nio.charset.*;

public class TestGB18030 {

    public static void gb18030_1(boolean useDirect) throws Exception {

        for(char ch : new char[]{'\uFFFE', '\uFFFF'}) {

            char[] ca = new char[]{ch};

            Charset cs = Charset.forName("GB18030");

            CharsetEncoder ce = cs.newEncoder();

            CharsetDecoder cd = cs.newDecoder();

            CharBuffer cb = CharBuffer.wrap(ca);

            ByteBuffer bb;

            if (useDirect) {

                bb = ByteBuffer.allocateDirect(

                    (int)Math.ceil(ce.maxBytesPerChar()));

            } else {

                bb = ByteBuffer.allocate(

                    (int)Math.ceil(ce.maxBytesPerChar()));

            }

            CoderResult cr = ce.encode(cb, bb, true);

            if (!cr.isUnderflow()) {

                throw new RuntimeException(

                    String.format("Encoder Error: \\u%04X: direct=%b: %s",

                        (int)ch,

                        useDirect,

                        cr.toString()));

            }

            bb.position(0);

            cb = CharBuffer.allocate((int)Math.ceil(

                cd.maxCharsPerByte()*bb.limit()));

            cr = cd.decode(bb, cb, true);

            if (!cr.isUnderflow()) {

                throw new RuntimeException(

                    String.format("Decoder Error: \\u%04X: direct=%b: %s",

                        (int)ch,

                        useDirect,

                        cr.toString()));

            }

            if (ca[0] != cb.get(0)) {

                throw new RuntimeException(

                    String.format("direct=%b: \\u%04X <> \\u%04X",

                        useDirect,

                        (int)ca[0],

                        (int)cb.get(0)));

            }

        }

    }

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

        gb18030_1(false);

        gb18030_1(true);

    }

}