src/3rdparty/harfbuzz/tests/linebreaking/main.cpp
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     1 /*
       
     2  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
       
     3  *
       
     4  * This is part of HarfBuzz, an OpenType Layout engine library.
       
     5  *
       
     6  * Permission is hereby granted, without written agreement and without
       
     7  * license or royalty fees, to use, copy, modify, and distribute this
       
     8  * software and its documentation for any purpose, provided that the
       
     9  * above copyright notice and the following two paragraphs appear in
       
    10  * all copies of this software.
       
    11  *
       
    12  * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
       
    13  * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
       
    14  * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
       
    15  * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
       
    16  * DAMAGE.
       
    17  *
       
    18  * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
       
    19  * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
       
    20  * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
       
    21  * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
       
    22  * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
       
    23  */
       
    24 
       
    25 /*
       
    26     !!!!!! Warning !!!!!
       
    27     Please don't save this file in emacs. It contains utf8 text sequences emacs will
       
    28     silently convert to a series of question marks.
       
    29  */
       
    30 #include <QtTest/QtTest>
       
    31 #include <QtCore/qdebug.h>
       
    32 
       
    33 #include <harfbuzz-shaper.h>
       
    34 
       
    35 static QVector<HB_CharAttributes> getCharAttributes(const QString &str, HB_Script script = HB_Script_Common)
       
    36 {
       
    37     QVector<HB_CharAttributes> attrs(str.length());
       
    38     HB_ScriptItem item;
       
    39     item.pos = 0;
       
    40     item.length = str.length();
       
    41     item.script = script;
       
    42     HB_GetCharAttributes(str.utf16(), str.length(),
       
    43                          &item, 1,
       
    44                          attrs.data());
       
    45     return attrs;
       
    46 }
       
    47 
       
    48 class tst_CharAttributes : public QObject
       
    49 {
       
    50     Q_OBJECT
       
    51 
       
    52 public:
       
    53     tst_CharAttributes();
       
    54     virtual ~tst_CharAttributes();
       
    55 
       
    56 public slots:
       
    57     void init();
       
    58     void cleanup();
       
    59 private slots:
       
    60     void lineBreaking();
       
    61     void charWordStopOnLineSeparator();
       
    62     void charStopForSurrogatePairs();
       
    63     void thaiWordBreak();
       
    64 };
       
    65 
       
    66 
       
    67 tst_CharAttributes::tst_CharAttributes()
       
    68 {
       
    69 }
       
    70 
       
    71 tst_CharAttributes::~tst_CharAttributes()
       
    72 {
       
    73 }
       
    74 
       
    75 void tst_CharAttributes::init()
       
    76 {
       
    77 }
       
    78 
       
    79 void tst_CharAttributes::cleanup()
       
    80 {
       
    81 }
       
    82 
       
    83 
       
    84 void tst_CharAttributes::lineBreaking()
       
    85 {
       
    86     struct Breaks {
       
    87 	const char *utf8;
       
    88 	uchar breaks[32];
       
    89     };
       
    90     Breaks brks[] = {
       
    91 	{ "11", { false, 0xff } },
       
    92 	{ "aa", { false, 0xff } },
       
    93 	{ "++", { false, 0xff } },
       
    94 	{ "--", { false, 0xff } },
       
    95 	{ "((", { false, 0xff } },
       
    96 	{ "))", { false, 0xff } },
       
    97 	{ "..", { false, 0xff } },
       
    98 	{ "\"\"", { false, 0xff } },
       
    99 	{ "$$", { false, 0xff } },
       
   100 	{ "!!", { false, 0xff } },
       
   101 	{ "??", { false, 0xff } },
       
   102 	{ ",,", { false, 0xff } },
       
   103 
       
   104 	{ ")()", { true, false, 0xff } },
       
   105 	{ "?!?", { false, false, 0xff } },
       
   106 	{ ".,.", { false, false, 0xff } },
       
   107 	{ "+-+", { false, false, 0xff } },
       
   108 	{ "+=+", { false, false, 0xff } },
       
   109 	{ "+(+", { false, false, 0xff } },
       
   110 	{ "+)+", { false, false, 0xff } },
       
   111 
       
   112 	{ "a b", { false, true, 0xff } },
       
   113 	{ "a(b", { false, false, 0xff } },
       
   114 	{ "a)b", { false, false, 0xff } },
       
   115 	{ "a-b", { false, true, 0xff } },
       
   116 	{ "a.b", { false, false, 0xff } },
       
   117 	{ "a+b", { false, false, 0xff } },
       
   118 	{ "a?b", { false, false, 0xff } },
       
   119 	{ "a!b", { false, false, 0xff } },
       
   120 	{ "a$b", { false, false, 0xff } },
       
   121 	{ "a,b", { false, false, 0xff } },
       
   122 	{ "a/b", { false, false, 0xff } },
       
   123 	{ "1/2", { false, false, 0xff } },
       
   124 	{ "./.", { false, false, 0xff } },
       
   125 	{ ",/,", { false, false, 0xff } },
       
   126 	{ "!/!", { false, false, 0xff } },
       
   127 	{ "\\/\\", { false, false, 0xff } },
       
   128 	{ "1 2", { false, true, 0xff } },
       
   129 	{ "1(2", { false, false, 0xff } },
       
   130 	{ "1)2", { false, false, 0xff } },
       
   131 	{ "1-2", { false, false, 0xff } },
       
   132 	{ "1.2", { false, false, 0xff } },
       
   133 	{ "1+2", { false, false, 0xff } },
       
   134 	{ "1?2", { false, true, 0xff } },
       
   135 	{ "1!2", { false, true, 0xff } },
       
   136 	{ "1$2", { false, false, 0xff } },
       
   137 	{ "1,2", { false, false, 0xff } },
       
   138 	{ "1/2", { false, false, 0xff } },
       
   139 	{ "\330\260\331\216\331\204\331\220\331\203\331\216", { false, false, false, false, false, 0xff } },
       
   140 	{ "\330\247\331\204\331\205 \330\247\331\204\331\205", { false, false, false, true, false, false, 0xff } },
       
   141 	{ "1#2", { false, false, 0xff } },
       
   142 	{ "!#!", { false, false, 0xff } },
       
   143 	{ 0, {} }
       
   144     };
       
   145     Breaks *b = brks;
       
   146     while (b->utf8) {
       
   147         QString str = QString::fromUtf8(b->utf8);
       
   148 
       
   149         QVector<HB_CharAttributes> attrs = getCharAttributes(str);
       
   150 
       
   151         int i;
       
   152         for (i = 0; i < (int)str.length() - 1; ++i) {
       
   153             QVERIFY(b->breaks[i] != 0xff);
       
   154             if ( (attrs[i].lineBreakType != HB_NoBreak) != (bool)b->breaks[i] ) {
       
   155                 qDebug("test case \"%s\" failed at char %d; break type: %d", b->utf8, i, attrs[i].lineBreakType);
       
   156                 QCOMPARE( (attrs[i].lineBreakType != HB_NoBreak), (bool)b->breaks[i] );
       
   157             }
       
   158         }
       
   159         QVERIFY(attrs[i].lineBreakType == HB_ForcedBreak);
       
   160         QCOMPARE(b->breaks[i], (uchar)0xff);
       
   161         ++b;
       
   162     }
       
   163 }
       
   164 
       
   165 void tst_CharAttributes::charWordStopOnLineSeparator()
       
   166 {
       
   167     const QChar lineSeparator(QChar::LineSeparator);
       
   168     QString txt;
       
   169     txt.append(lineSeparator);
       
   170     txt.append(lineSeparator);
       
   171     QVector<HB_CharAttributes> attrs = getCharAttributes(txt);
       
   172     QVERIFY(attrs[1].charStop);
       
   173 }
       
   174 
       
   175 void tst_CharAttributes::charStopForSurrogatePairs()
       
   176 {
       
   177     QString txt;
       
   178     txt.append("a");
       
   179     txt.append(0xd87e);
       
   180     txt.append(0xdc25);
       
   181     txt.append("b");
       
   182     QVector<HB_CharAttributes> attrs = getCharAttributes(txt);
       
   183     QVERIFY(attrs[0].charStop);
       
   184     QVERIFY(attrs[1].charStop);
       
   185     QVERIFY(!attrs[2].charStop);
       
   186     QVERIFY(attrs[3].charStop);
       
   187 }
       
   188 
       
   189 void tst_CharAttributes::thaiWordBreak()
       
   190 {
       
   191     // สวัสดีครับ นี่เป็นการงทดสอบตัวเอ
       
   192     QTextCodec *codec = QTextCodec::codecForMib(2259);
       
   193     QString txt = codec->toUnicode(QByteArray("\xca\xc7\xd1\xca\xb4\xd5\xa4\xc3\xd1\xba\x20\xb9\xd5\xe8\xe0\xbb\xe7\xb9\xa1\xd2\xc3\xb7\xb4\xca\xcd\xba\xb5\xd1\xc7\xe0\xcd\xa7"));
       
   194 
       
   195 
       
   196     QCOMPARE(txt.length(), 32);
       
   197     QVector<HB_CharAttributes> attrs = getCharAttributes(txt, HB_Script_Thai);
       
   198     QVERIFY(attrs[0].lineBreakType == HB_NoBreak);
       
   199     QVERIFY(attrs[1].lineBreakType == HB_NoBreak);
       
   200     QVERIFY(attrs[2].lineBreakType == HB_NoBreak);
       
   201     QVERIFY(attrs[3].lineBreakType == HB_NoBreak);
       
   202     QVERIFY(attrs[4].lineBreakType == HB_NoBreak);
       
   203     QVERIFY(attrs[5].lineBreakType == HB_Break);
       
   204     QVERIFY(attrs[6].lineBreakType == HB_NoBreak);
       
   205     QVERIFY(attrs[7].lineBreakType == HB_NoBreak);
       
   206     QVERIFY(attrs[8].lineBreakType == HB_NoBreak);
       
   207     QVERIFY(attrs[9].lineBreakType == HB_NoBreak);
       
   208     QVERIFY(attrs[10].lineBreakType == HB_Break);
       
   209     QVERIFY(attrs[11].lineBreakType == HB_NoBreak);
       
   210     QVERIFY(attrs[12].lineBreakType == HB_NoBreak);
       
   211     QVERIFY(attrs[13].lineBreakType == HB_Break);
       
   212     QVERIFY(attrs[14].lineBreakType == HB_NoBreak);
       
   213     QVERIFY(attrs[15].lineBreakType == HB_NoBreak);
       
   214     QVERIFY(attrs[16].lineBreakType == HB_NoBreak);
       
   215     QVERIFY(attrs[17].lineBreakType == HB_Break);
       
   216     QVERIFY(attrs[18].lineBreakType == HB_NoBreak);
       
   217     QVERIFY(attrs[19].lineBreakType == HB_NoBreak);
       
   218     QVERIFY(attrs[20].lineBreakType == HB_Break);
       
   219     QVERIFY(attrs[21].lineBreakType == HB_NoBreak);
       
   220     QVERIFY(attrs[22].lineBreakType == HB_NoBreak);
       
   221     QVERIFY(attrs[23].lineBreakType == HB_NoBreak);
       
   222     QVERIFY(attrs[24].lineBreakType == HB_NoBreak);
       
   223     QVERIFY(attrs[25].lineBreakType == HB_Break);
       
   224     QVERIFY(attrs[26].lineBreakType == HB_NoBreak);
       
   225     for (int i = 27; i < 32; ++i)
       
   226         QVERIFY(attrs[i].lineBreakType == HB_NoBreak);
       
   227 }
       
   228 
       
   229 QTEST_MAIN(tst_CharAttributes)
       
   230 #include "main.moc"