1 /*
   2  * Copyright (c) 2018, 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 /*
  25  * @test
  26  * @bug 4153987 6354525
  27  * @summary Malformed surrogates should be handled by the converter in
  28  * substitution mode.
  29  */
  30 
  31 import java.io.ByteArrayOutputStream;
  32 import java.io.OutputStream;
  33 import java.io.OutputStreamWriter;
  34 
  35 public class MalformedSurrogateStringTest {
  36 
  37     public static void main(String[] args) throws Exception {
  38 
  39         String fe = System.getProperty("file.encoding");
  40         if (  fe.equalsIgnoreCase("UTF8")
  41               || fe.equalsIgnoreCase("UTF-8")
  42               || fe.equalsIgnoreCase("UTF_8"))
  43             // This test is meaningless if the default charset
  44             // does handle surrogates
  45             return;
  46 
  47         System.out.println("Testing string conversion...");
  48         /* Example with malformed surrogate, and an offset */
  49         String t = "abc\uD800\uDB00efgh";
  50         String t2 = t.substring(2);
  51         byte[] b = t2.getBytes();
  52         System.err.println(b.length);
  53         for (int i = 0; i < b.length; i++)
  54             System.err.println("[" + i + "]" + "=" + (char) b[i]
  55                                + "=" + (int) b[i]);
  56         if (b.length != 7) {
  57             throw new Exception("Bad string conversion for bad surrogate");
  58         }
  59 
  60         /* Example with a proper surrogate, no offset. Always worked */
  61         String t3 = "abc\uD800\uDC00efgh";
  62         byte[] b2 = t3.getBytes();
  63         System.out.println(b2.length);
  64         for(int i = 0; i < b2.length; i++)
  65             System.err.println("[" + i + "]" + "=" + (char) b2[i]);
  66         if (b2.length != 8) {
  67             throw new Exception("Bad string conversion for good surrogate");
  68         }
  69 
  70         OutputStream os = new ByteArrayOutputStream();
  71         OutputStreamWriter osw = new OutputStreamWriter(os);
  72         System.out.println("Testing flush....");
  73         /* Check for the case where the converter has a left over
  74            high surrogate when flush is called on the converter */
  75         osw.flush();
  76         String s = "abc\uD800"; // High surrogate
  77         char[] c = s.toCharArray();
  78         osw.write(s, 0, 4);
  79         osw.flush();
  80 
  81         System.out.println("Testing convert...");
  82         /* Verify that all other characters go through */
  83         for (int k = 1; k < 65535 ; k++) {
  84             osw.write("Char[" + k + "]=\"" + ((char) k) + "\"");
  85         }
  86 
  87     }
  88 }