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
34import java.awt.Color;
35import java.awt.Frame;
36import java.awt.font.TextAttribute;
37import java.text.AttributedString;
38import java.text.Bidi;
39
40public 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}
138