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 /* 25 * @test 26 * @bug 4888843 27 * @summary verify that surrogate pairs representing codepoints with R or AL directionality 28 * and correctly recognized and reordered. 29 */ 30 31 import java.text.Bidi; 32 33 public class BidiSurrogateTest { 34 private static final String RTLS = new String(Character.toChars(0x10800)); // surrogate code point with R directionality 35 private static final String LTRS = new String(Character.toChars(0x107ff)); // surrogate code point with L directionality 36 private static final String LRE = "\u202a"; 37 private static final String RLE = "\u202b"; 38 private static final String PDF = "\u202c"; 39 40 main(String[] args)41 public static void main(String[] args) { 42 new BidiSurrogateTest().test(); 43 } 44 test()45 void test() { 46 test0(); 47 test1(); 48 } 49 test0()50 void test0() { 51 // test unpaired surrogates - should have L directionality 52 testRequiresBidi("\ud800", false); // unpaired lead surrogate 53 testRequiresBidi("\udc00", false); // unpaired trail surrogate 54 testRequiresBidi("\udc00\ud800", false); // out of order surrogates 55 testRequiresBidi("a\udc00b\ud800c", false); // out of order surrogates split 56 testRequiresBidi(LTRS, false); // supplementary with L 57 testRequiresBidi(RTLS, true); // supplementary with R 58 testRequiresBidi("a" + RTLS + "b", true); // R supplementary in LTR text 59 testRequiresBidi(LTRS + RTLS, true); // R supplementary in LTR supplementary text 60 testRequiresBidi(LRE, false); // LRE lone embedding 61 testRequiresBidi(RLE, true); // RLE lone embedding 62 testRequiresBidi(PDF, false); // PDF lone pop embedding 63 } 64 testRequiresBidi(String string, boolean requiresBidi)65 void testRequiresBidi(String string, boolean requiresBidi) { 66 char[] text = string.toCharArray(); 67 if (Bidi.requiresBidi(text, 0, text.length) != requiresBidi) { 68 throw new RuntimeException("testRequiresBidi failed with '" + string + "', " + requiresBidi); 69 } 70 } 71 test1()72 void test1() { 73 // test that strings with surrogate runs process surrogate directionality ok 74 testBidi("This is a string with " + LTRS + " in it.", false); 75 testBidi("This is a string with \ud800 in it.", false); 76 testBidi("This is a string with \u0640 in it.", 22, 1); 77 testBidi(RTLS, true); 78 testBidi("This is a string with " + RTLS + RTLS + RTLS + " in it.", 22, 6); 79 } 80 testBidi(String string, boolean directionIsRTL)81 void testBidi(String string, boolean directionIsRTL) { 82 Bidi bidi = new Bidi(string, Bidi.DIRECTION_DEFAULT_LEFT_TO_RIGHT); 83 if (bidi.isMixed()) { 84 throw new RuntimeException("bidi is mixed"); 85 } 86 if (bidi.isRightToLeft() != directionIsRTL) { 87 throw new RuntimeException("bidi is not " + (directionIsRTL ? "rtl" : "ltr")); 88 } 89 } 90 testBidi(String string, int rtlstart, int rtllength)91 void testBidi(String string, int rtlstart, int rtllength) { 92 Bidi bidi = new Bidi(string, Bidi.DIRECTION_DEFAULT_LEFT_TO_RIGHT); 93 for (int i = 0; i < bidi.getRunCount(); ++i) { 94 if ((bidi.getRunLevel(i) & 1) != 0) { 95 if (bidi.getRunStart(i) != rtlstart || 96 bidi.getRunLimit(i) != rtlstart + rtllength) { 97 throw new RuntimeException("first rtl run didn't match " + rtlstart + ", " + rtllength); 98 } 99 break; 100 } 101 } 102 } 103 } 104