1 /*

     2  * Copyright 2010 Sun Microsystems, Inc.  All Rights Reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    20  * CA 95054 USA or visit www.sun.com if you need additional information or

    21  * have any questions.

    22  */

    23 

    24 /* @test

    25  * @bug 4821286

    26  * @summary Check correctness of CharsetEncoder.isLegalReplacement(byte[])

    27  */

    28 

    29 import java.io.*;

    30 import java.nio.*;

    31 import java.nio.charset.*;

    32 import java.util.*;

    33 

    34 

    35 public class IsLegalReplacement {

    36 

    37     static PrintStream out = System.err;

    38     static int errors = 0;

    39 

    40     static String toString(byte[] ba) {

    41         StringBuffer sb = new StringBuffer();

    42         for (int i = 0; i < ba.length; i++) {

    43             byte b = ba[i];

    44             if (i > 0)

    45                 sb.append(' ');

    46             sb.append(Integer.toHexString((b >> 4) & 0xf));

    47             sb.append(Integer.toHexString((b >> 0) & 0xf));

    48         }

    49         return sb.toString();

    50     }

    51 

    52     static CoderResult ilr(String csn, byte[] repl) {

    53         CharsetDecoder dec = Charset.forName(csn).newDecoder();

    54         dec.onMalformedInput(CodingErrorAction.REPORT);

    55         dec.onUnmappableCharacter(CodingErrorAction.REPORT);

    56         ByteBuffer bb = ByteBuffer.wrap(repl);

    57         CharBuffer cb = CharBuffer.allocate((int)(bb.remaining()

    58                                                   * dec.maxCharsPerByte()));

    59         return dec.decode(bb, cb, true);

    60     }

    61 

    62     static void test(String csn, byte[] repl, boolean expected)

    63         throws Exception

    64     {

    65         CharsetEncoder enc = Charset.forName(csn).newEncoder();

    66         out.print(csn + ": " + toString(repl) + ": ");

    67         if (enc.isLegalReplacement(repl) == expected) {

    68             out.print("Okay");

    69         } else {

    70             out.print("Wrong: Expected " + expected);

    71             errors++;

    72         }

    73         out.println(" (" + ilr(csn, repl) + ")");

    74     }

    75 

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

    77 

    78         test("UTF-16", new byte [] { (byte)0xd8, 0, (byte)0xdc, 0 }, true);

    79         test("UTF-16", new byte [] { (byte)0xdc, 0, (byte)0xd8, 0 }, false);

    80         test("UTF-16", new byte [] { (byte)0xd8, 0 }, false);

    81         test("UTF-16BE", new byte [] { (byte)0xd8, 0, (byte)0xdc, 0 }, true);

    82         test("UTF-16BE", new byte [] { (byte)0xdc, 0, (byte)0xd8, 0 }, false);

    83         test("UTF-16BE", new byte [] { (byte)0xd8, 0 }, false);

    84         test("UTF-16LE", new byte [] { 0, (byte)0xd8, 0, (byte)0xdc }, true);

    85         test("UTF-16LE", new byte [] { 0, (byte)0xdc, 0, (byte)0xd8 }, false);

    86         test("UTF-16LE", new byte [] { 0, (byte)0xd8 }, false);

    87 

    88         if (errors > 0)

    89             throw new Exception(errors + " error(s) occurred");

    90 

    91     }

    92 

    93 }