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#include <QtTest/QtTest>

#include <qtextboundaryfinder.h>

#include <qfile.h>

#include <qdebug.h>

//TESTED_CLASS=

//TESTED_FILES=gui/text/qtextlayout.h corelib/tools/qtextboundaryfinder.cpp

#ifdef Q_OS_SYMBIAN

#define SRCDIR "$$PWD"

#endif

class tst_QTextBoundaryFinder : public QObject

{

    Q_OBJECT

public:

    tst_QTextBoundaryFinder();

    virtual ~tst_QTextBoundaryFinder();

public slots:

    void init();

    void cleanup();

private slots:

    void graphemeBoundaries();

    void wordBoundaries();

    void sentenceBoundaries();

    void isAtWordStart();

    void fastConstructor();

    void isAtBoundaryLine();

};

tst_QTextBoundaryFinder::tst_QTextBoundaryFinder()

{

}

tst_QTextBoundaryFinder::~tst_QTextBoundaryFinder()

{

}

void tst_QTextBoundaryFinder::init()

{

#ifndef Q_OS_IRIX

    QDir::setCurrent(SRCDIR);

#endif

}

void tst_QTextBoundaryFinder::cleanup()

{

}

void tst_QTextBoundaryFinder::graphemeBoundaries()

{

    QFile file("data/GraphemeBreakTest.txt");

    file.open(QFile::ReadOnly);

    int lines = 0;

    while (!file.atEnd()) {

        QByteArray line = file.readLine();

        if (line.startsWith('#'))

            continue;

        lines++;

        QString test = QString::fromUtf8(line);

        int hash = test.indexOf('#');

        if (hash > 0)

            test = test.left(hash);

        test = test.simplified();

        test = test.replace(QLatin1String(" "), QString());

        QList<int> breakPositions;

        QString testString;

        int pos = 0;

        int strPos = 0;

        while (pos < test.length()) {

            if (test.at(pos).unicode() == 0xf7)

                breakPositions.append(strPos);

            else

                Q_ASSERT(test.at(pos).unicode() == 0xd7);

            ++pos;

            if (pos < test.length()) {

                Q_ASSERT(pos < test.length() - 4);

                QString hex = test.mid(pos, 4);

                bool ok = true;

                testString.append(QChar(hex.toInt(&ok, 16)));

                Q_ASSERT(ok);

                pos += 4;

            }

            ++strPos;

        }

        QTextBoundaryFinder finder(QTextBoundaryFinder::Grapheme, testString);

        for (int i = 0; i < breakPositions.size(); ++i) {

            QCOMPARE(finder.position(), breakPositions.at(i));

            finder.toNextBoundary();

        }

        QCOMPARE(finder.toNextBoundary(), -1);

        for (int i = 0; i < testString.length(); ++i) {

            finder.setPosition(i);

            QCOMPARE(finder.isAtBoundary(), breakPositions.contains(i) == true);

        }

    }

    QCOMPARE(lines, 100); // to see it actually found the file and all.

}

void tst_QTextBoundaryFinder::wordBoundaries()

{

    QFile file("data/WordBreakTest.txt");

    file.open(QFile::ReadOnly);

    while (!file.atEnd()) {

        QByteArray line = file.readLine();

        if (line.startsWith('#'))

            continue;

        QString test = QString::fromUtf8(line);

        int hash = test.indexOf('#');

        if (hash > 0)

            test = test.left(hash);

        test = test.simplified();

        test = test.replace(QLatin1String(" "), QString());

        QList<int> breakPositions;

        QString testString;

        int pos = 0;

        int strPos = 0;

        while (pos < test.length()) {

            if (test.at(pos).unicode() == 0xf7)

                breakPositions.append(strPos);

            else

                Q_ASSERT(test.at(pos).unicode() == 0xd7);

            ++pos;

            if (pos < test.length()) {

                Q_ASSERT(pos < test.length() - 4);

                QString hex = test.mid(pos, 4);

                bool ok = true;

                testString.append(QChar(hex.toInt(&ok, 16)));

                Q_ASSERT(ok);

                pos += 4;

            }

            ++strPos;

        }

        QTextBoundaryFinder finder(QTextBoundaryFinder::Word, testString);

        for (int i = 0; i < breakPositions.size(); ++i) {

            QCOMPARE(finder.position(), breakPositions.at(i));

            finder.toNextBoundary();

        }

        QCOMPARE(finder.toNextBoundary(), -1);

        for (int i = 0; i < testString.length(); ++i) {

            finder.setPosition(i);

            QCOMPARE(finder.isAtBoundary(), breakPositions.contains(i) == true);

        }

    }

}

void tst_QTextBoundaryFinder::sentenceBoundaries()

{

    QFile file("data/SentenceBreakTest.txt");

    file.open(QFile::ReadOnly);

    while (!file.atEnd()) {

        QByteArray line = file.readLine();

        if (line.startsWith('#'))

            continue;

        QString test = QString::fromUtf8(line);

        int hash = test.indexOf('#');

        if (hash > 0)

            test = test.left(hash);

        test = test.simplified();

        test = test.replace(QLatin1String(" "), QString());

        QList<int> breakPositions;

        QString testString;

        int pos = 0;

        int strPos = 0;

        while (pos < test.length()) {

            if (test.at(pos).unicode() == 0xf7)

                breakPositions.append(strPos);

            else

                Q_ASSERT(test.at(pos).unicode() == 0xd7);

            ++pos;

            if (pos < test.length()) {

                Q_ASSERT(pos < test.length() - 4);

                QString hex = test.mid(pos, 4);

                bool ok = true;

                testString.append(QChar(hex.toInt(&ok, 16)));

                Q_ASSERT(ok);

                pos += 4;

            }

            ++strPos;

        }

        QTextBoundaryFinder finder(QTextBoundaryFinder::Sentence, testString);

        for (int i = 0; i < breakPositions.size(); ++i) {

            QCOMPARE(finder.position(), breakPositions.at(i));

            finder.toNextBoundary();

        }

        QCOMPARE(finder.toNextBoundary(), -1);

        for (int i = 0; i < testString.length(); ++i) {

            finder.setPosition(i);

            QCOMPARE(finder.isAtBoundary(), breakPositions.contains(i) == true);

        }

    }

}

void tst_QTextBoundaryFinder::isAtWordStart()

{

    QString txt("The quick brown fox jumped over $the lazy. dog  ");

    QList<int> start, end;

    start << 0 << 4 << 10 << 16 << 20 << 27 << 32 << 33 << 37 << 41 << 43;

    end << 3 << 9 << 15 << 19 << 26 << 31 << 33 << 36 << 41 << 42 << 46;

    QTextBoundaryFinder finder(QTextBoundaryFinder::Word, txt);

    for(int i=0; i < txt.length(); ++i) {

        finder.setPosition(i);

        QTextBoundaryFinder::BoundaryReasons r = finder.boundaryReasons();

        // qDebug() << i << r;

        QCOMPARE((r & QTextBoundaryFinder::StartWord) != 0, start.contains(i) == true);

        QCOMPARE((r & QTextBoundaryFinder::EndWord) != 0, end.contains(i) == true);

    }

}

void tst_QTextBoundaryFinder::fastConstructor()

{

    QString text("Hello World");

    QTextBoundaryFinder finder(QTextBoundaryFinder::Word, text.constData(), text.length(), /*buffer*/0, /*buffer size*/0);

    QVERIFY(finder.boundaryReasons() == QTextBoundaryFinder::StartWord);

    finder.toNextBoundary();

    QCOMPARE(finder.position(), 5);

    QVERIFY(finder.boundaryReasons() == QTextBoundaryFinder::EndWord);

    finder.toNextBoundary();

    QCOMPARE(finder.position(), 6);

    QVERIFY(finder.boundaryReasons() == QTextBoundaryFinder::StartWord);

    finder.toNextBoundary();

    QCOMPARE(finder.position(), text.length());

    QVERIFY(finder.boundaryReasons() == QTextBoundaryFinder::EndWord);

    finder.toNextBoundary();

    QVERIFY(finder.boundaryReasons() == QTextBoundaryFinder::NotAtBoundary);

    QCOMPARE(finder.position(), -1);

}

void tst_QTextBoundaryFinder::isAtBoundaryLine()

{

    // idx          0       1       2       3       4       5

    // break?       -       -       -       +       -       +

    QChar s[] = { 0x0061, 0x00AD, 0x0062, 0x0009, 0x0063, 0x0064 };

    QString text(s, sizeof(s)/sizeof(s[0]));

    qDebug() << "text = " << text << ", length = " << text.length();

    QTextBoundaryFinder finder(QTextBoundaryFinder::Line, text.constData(), text.length(), /*buffer*/0, /*buffer size*/0);

    finder.setPosition(0);

    QVERIFY(!finder.isAtBoundary());

    finder.setPosition(1);

    QVERIFY(!finder.isAtBoundary());

    finder.setPosition(2);

    QVERIFY(!finder.isAtBoundary());

    finder.setPosition(3);

    QVERIFY(finder.isAtBoundary());

    finder.setPosition(4);

    QVERIFY(!finder.isAtBoundary());

    finder.setPosition(5);

    QVERIFY(finder.isAtBoundary());

}

QTEST_MAIN(tst_QTextBoundaryFinder)

#include "tst_qtextboundaryfinder.moc"