/*

 * Copyright (c) 2008, 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 4122961

   @summary Verify that converters don't drop characters on buffer boundaries

   This is a slightly modified version of the attachment supplied with the

   bug report.

 */

import java.io.*;

public class TestConverterDroppedCharacters {

    public static void main(String args[])

        throws java.io.IOException, java.io.UnsupportedEncodingException,

               java.io.FileNotFoundException

    {

        /* Try misc. encodings, many are broken. */

        tryEncoding("Big5");

        tryEncoding("CNS11643");

        tryEncoding("Cp1006");

        tryEncoding("Cp1381");

        tryEncoding("Cp33722");

        tryEncoding("GB2312");

        tryEncoding("KSC5601");

        tryEncoding("SJIS");

        tryEncoding("UTF8");

    }

    static void tryEncoding(String encoding)

        throws java.io.IOException, java.io.UnsupportedEncodingException,

               java.io.FileNotFoundException

    {

        String filename = "OUTPUT";

        int goesBadAfter = 8193;

        int i;

        char data[] = new char[goesBadAfter+1];

        System.out.println("Testing " + encoding);

        /* Create some data */

        for(i = 0; i < goesBadAfter; i++) {

            data[i] = (char)((i % 0x7f) + 1);

        }

        /* Write the data out to a file. */

        FileOutputStream fout = new FileOutputStream(filename);

        OutputStreamWriter ow = new OutputStreamWriter(fout, encoding);

        BufferedWriter fd     = new BufferedWriter(ow);

        fd.write(data,0,goesBadAfter);

        fd.close();

        /* Now read it back with the same encoding. */

        char buf[] = new char[goesBadAfter+1];

        FileInputStream fin = new FileInputStream("OUTPUT");

        InputStreamReader ir = new InputStreamReader(fin, encoding);

        ir.read(buf,0,goesBadAfter);

        ir.close();

        /* And check to see if what we wrote is what we got back. */

        for(i = 0; i < goesBadAfter; i++) {

            if (data[i] != buf[i]) {

                System.out.println("ERROR with encoding " + encoding

                                   + ": Data wrong at position " + i + "   "

                                   + "in: " + (int)data[i] + "   "

                                   + "out: " + (int)buf[i]);

                throw new RuntimeException();

            }

        }

        System.out.println("Successfully tested " + encoding);

    }

}