1 /*
   2  * Copyright (c) 2008, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /* @test
  25    @bug 4153987
  26    @summary Malformed surrogates should be handled by the converter in
  27    substitution mode.
  28  */
  29 
  30 import java.io.*;
  31 
  32 public class MalformedSurrogates {
  33 
  34     public static void main(String[] args) throws Exception {
  35 
  36         String fe = System.getProperty("file.encoding");
  37         if (  fe.equalsIgnoreCase("UTF8")
  38               || fe.equalsIgnoreCase("UTF-8")
  39               || fe.equalsIgnoreCase("UTF_8"))
  40             // This test is meaningless if the default charset
  41             // does handle surrogates
  42             return;
  43 
  44         System.out.println("Testing string conversion...");
  45         /* Example with malformed surrogate, and an offset */
  46         String t = "abc\uD800\uDB00efgh";
  47         String t2 = t.substring(2);
  48         byte[] b = t2.getBytes();
  49         System.err.println(b.length);
  50         for (int i = 0; i < b.length; i++)
  51             System.err.println("[" + i + "]" + "=" + (char) b[i]
  52                                + "=" + (int) b[i]);
  53         if (b.length != 7) {
  54             throw new Exception("Bad string conversion for bad surrogate");
  55         }
  56 
  57         /* Example with a proper surrogate, no offset. Always worked */
  58         String t3 = "abc\uD800\uDC00efgh";
  59         byte[] b2 = t3.getBytes();
  60         System.out.println(b2.length);
  61         for(int i = 0; i < b2.length; i++)
  62             System.err.println("[" + i + "]" + "=" + (char) b2[i]);
  63         if (b2.length != 8) {
  64             throw new Exception("Bad string conversion for good surrogate");
  65         }
  66 
  67         OutputStream os = new ByteArrayOutputStream();
  68         OutputStreamWriter osw = new OutputStreamWriter(os);
  69         System.out.println("Testing flush....");
  70         /* Check for the case where the converter has a left over
  71            high surrogate when flush is called on the converter */
  72         osw.flush();
  73         String s = "abc\uD800"; // High surrogate
  74         char[] c = s.toCharArray();
  75         osw.write(s, 0, 4);
  76         osw.flush();
  77 
  78         System.out.println("Testing convert...");
  79         /* Verify that all other characters go through */
  80         for (int k = 1; k < 65535 ; k++) {
  81             osw.write("Char[" + k + "]=\"" + ((char) k) + "\"");
  82         }
  83 
  84     }
  85 }