/****************************************************************************

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** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

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** Contact: Nokia Corporation (qt-info@nokia.com)

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** This file is part of the utils of the Qt Toolkit.

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** No Commercial Usage

** This file contains pre-release code and may not be distributed.

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** contained in the Technology Preview License Agreement accompanying

** this package.

**

** GNU Lesser General Public License Usage

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** General Public License version 2.1 as published by the Free Software

** Foundation and appearing in the file LICENSE.LGPL included in the

** packaging of this file.  Please review the following information to

** ensure the GNU Lesser General Public License version 2.1 requirements

** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

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** $QT_END_LICENSE$

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****************************************************************************/

#include <qtextcodec.h>

#include <qbytearray.h>

#include <qstring.h>

#include <qdebug.h>

#include <qfile.h>

#include <qcoreapplication.h>

#include <qset.h>

struct Map { Map(uint u,  uint b) : uc(u),  b5(b) {} uint uc; uint b5; };

int main(int argc, char **argv)

{

    QCoreApplication app(argc, argv);

    QTextCodec *big5 = QTextCodec::codecForName("Big5-hkscs");

#if 0

    QFile f("/home/lars/dev/qt-4.0/util/unicode/data/big5-eten.txt");

    f.open(QFile::ReadOnly);

    while (!f.atEnd()) {

        QByteArray line = f.readLine();

        if (line.startsWith("#"))

            continue;

        line.replace("0x", "");

        line.replace("U+", "");

        line.replace("\t", " ");

        line = line.simplified();

        QList<QByteArray> split = line.split(' ');

        bool ok;

        int b5 = split.at(0).toInt(&ok, 16);

        Q_ASSERT(ok);

        int uc = split.at(1).toInt(&ok, 16);

        Q_ASSERT(ok);

        if (b5 < 0x100)

            continue;

#else

    QFile f(":/BIG5");

    f.open(QFile::ReadOnly);

    while (!f.atEnd()) {

        QByteArray line = f.readLine();

        if (line.startsWith("CHARMAP"))

            break;

    }

    QSet<uint> b5_ok;

    QSet<uint> uc_ok;

    QList<Map> b5_to_uc_map;

    QList<Map> uc_to_b5_map;

    while (!f.atEnd()) {

        QByteArray line = f.readLine();

        if (line.startsWith("%"))

            continue;

        if (line.startsWith("END CHARMAP"))

            break;

        line.replace("/x", "");

        line.replace("<U", "");

        line.replace(">", "");

        line.replace("\t", " ");

        line = line.simplified();

        QList<QByteArray> split = line.split(' ');

        bool ok;

        int b5 = split.at(1).toInt(&ok, 16);

        Q_ASSERT(ok);

        int uc = split.at(0).toInt(&ok, 16);

        Q_ASSERT(ok);

        if (b5 < 0x100 || uc > 0xffff)

            continue;

#endif

//         qDebug() << hex << "testing: '" << b5 << "' - '" << uc << "'";

        QByteArray ba;

        ba += (char)(uchar)(b5 >> 8);

        ba += (char)(uchar)(b5 & 0xff);

        QString s = big5->toUnicode(ba);

        Q_ASSERT(s.length() == 1);

        QString s2;

        s2 = QChar(uc);

        ba = big5->fromUnicode(s2);

        Q_ASSERT(ba.length() <= 2);

        int round;

        if (ba.length() == 1)

            round = (int)(uchar)ba[0];

        else

            round = ((int)(uchar)ba[0] << 8) + (int)(uchar)ba[1];

        if (b5 != round)

            uc_to_b5_map += Map(uc, b5);

        else

            b5_ok.insert(b5);

        if (s[0].unicode() != uc)

            b5_to_uc_map += Map(uc, b5);

        else

            uc_ok.insert(uc);

    };

    QList<QByteArray> list;

    foreach(Map m, b5_to_uc_map) {

        if (!uc_ok.contains(m.b5))

            list += QByteArray("    { 0x" + QByteArray::number(m.b5, 16) + ", 0x" + QByteArray::number(m.uc, 16) + " }\n");;

    }

    QByteArray ba;

    qSort(list);

    foreach(QByteArray a, list)

        ba += a;

    qDebug() << "struct B5Map b5_to_uc_map = {\n" << ba + "\n};";

    list = QList<QByteArray>();

    foreach(Map m, uc_to_b5_map)

        if (!b5_ok.contains(m.uc))

            list += QByteArray("    { 0x" + QByteArray::number(m.uc, 16) + ", 0x" + QByteArray::number(m.b5, 16) + " }\n");;

    ba = QByteArray();

    qSort(list);

    foreach(QByteArray a, list)

        ba += a;

    qDebug() << "struct B5Map uc_to_b5_map = {\n" << ba + "\n};";

}