1 /*
   2  * Copyright (c) 2008, 2016, 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 4396492 4396496 4778510 6850113
  27  * @summary verify that the embedding values processed by the bidi code use negative values to
  28  * indicate overrides, rather than using bit 7.  Also tests Bidi without loading awt classes to
  29  * confirm that Bidi can be used without awt. Verify that embedding level 0 is properly mapped
  30  * to the base embedding level.
  31  * @modules java.desktop
  32  */
  33 
  34 import java.awt.Color;
  35 import java.awt.Frame;
  36 import java.awt.font.TextAttribute;
  37 import java.text.AttributedString;
  38 import java.text.Bidi;
  39 
  40 public class BidiEmbeddingTest {
  41     public static void main(String[] args) {
  42         // to regress embedding test against old fix, call with an arg.  A window will pop
  43         // up causing awt lib to be loaded so the vm won't die with the unsatisfied link error.
  44         if (args.length > 0) {
  45             Frame f = new Frame();
  46             f.setSize(300, 300);
  47             f.setBackground(Color.white);
  48             f.show();
  49         }
  50 
  51         test1();
  52         test2();
  53     }
  54 
  55     static void test1() {
  56         String target = "BACK WARDS";
  57         String str = "If this text is >" + target + "< the test passed.";
  58         int start = str.indexOf(target);
  59         int limit = start + target.length();
  60 
  61         System.out.println("start: " + start + " limit: " + limit);
  62 
  63         AttributedString astr = new AttributedString(str);
  64         astr.addAttribute(TextAttribute.BIDI_EMBEDDING,
  65                          new Integer(-1),
  66                          start,
  67                          limit);
  68 
  69         Bidi bidi = new Bidi(astr.getIterator());
  70 
  71         for (int i = 0; i < bidi.getRunCount(); ++i) {
  72             System.out.println("run " + i +
  73                                " from " + bidi.getRunStart(i) +
  74                                " to " + bidi.getRunLimit(i) +
  75                                " at level " + bidi.getRunLevel(i));
  76         }
  77 
  78         System.out.println(bidi);
  79 
  80         byte[] embs = new byte[str.length() + 3];
  81         for (int i = start + 1; i < limit + 1; ++i) {
  82             embs[i] = -1;
  83         }
  84 
  85         Bidi bidi2 = new Bidi(str.toCharArray(), 0, embs, 1, str.length(), Bidi.DIRECTION_DEFAULT_LEFT_TO_RIGHT);
  86         for (int i = 0; i < bidi2.getRunCount(); ++i) {
  87             System.out.println("run " + i +
  88                                " from " + bidi2.getRunStart(i) +
  89                                " to " + bidi2.getRunLimit(i) +
  90                                " at level " + bidi2.getRunLevel(i));
  91         }
  92 
  93         System.out.println(bidi2 + "\n");
  94 
  95         if (bidi.getRunCount() != 3 || bidi2.getRunCount() != 3) {
  96             throw new Error("Bidi run count incorrect");
  97         } else {
  98             System.out.println("test1() passed.\n");
  99         }
 100     }
 101 
 102     // make sure BIDI_EMBEDDING values of 0 are mapped to base run direction, instead of flagging an error.
 103     static void test2() {
 104         String target = "BACK WARDS";
 105         String str = "If this text is >" + target + "< the test passed.";
 106         int length = str.length();
 107         int start = str.indexOf(target);
 108         int limit = start + target.length();
 109 
 110         System.out.println("start: " + start + " limit: " + limit);
 111 
 112         AttributedString astr = new AttributedString(str);
 113         astr.addAttribute(TextAttribute.RUN_DIRECTION, TextAttribute.RUN_DIRECTION_RTL);
 114 
 115         astr.addAttribute(TextAttribute.BIDI_EMBEDDING,
 116                          new Integer(-3),
 117                          start,
 118                          limit);
 119 
 120         Bidi bidi = new Bidi(astr.getIterator());
 121 
 122         for (int i = 0; i < bidi.getRunCount(); ++i) {
 123             System.out.println("run " + i +
 124                                " from " + bidi.getRunStart(i) +
 125                                " to " + bidi.getRunLimit(i) +
 126                                " at level " + bidi.getRunLevel(i));
 127         }
 128 
 129         System.out.println(bidi + "\n");
 130 
 131         if (bidi.getRunCount() != 6) { // runs of spaces and angles at embedding bound,s and final period, each get level 1
 132             throw new Error("Bidi embedding processing failed");
 133         } else {
 134             System.out.println("test2() passed.\n");
 135         }
 136     }
 137 }