telegram_emojis.cpp

telegram_emojis.cpp

#include <QCoreApplication>
#include <QFile>
#include <QDataStream>
#include <QDebug>
#include <iostream>

namespace Ui {
namespace Emoji {
constexpr auto kPostfix = 0xFE0FU;
class One {};
}
}

using EmojiPtr = const Ui::Emoji::One*;

Ui::Emoji::One globalOne;

struct LangPackEmoji {
    EmojiPtr emoji = nullptr;
    QString text;
};

struct LangPackData {
    int version = 0;
    int maxKeyLength = 0;
    std::map<QString, std::vector<LangPackEmoji>> emoji;
};

bool MustAddPostfix(const QString &text) {
    if (text.size() != 1) {
        return false;
    }
    const auto code = text[0].unicode();
    return (code == 0x2122U) || (code == 0xA9U) || (code == 0xAEU);
}

inline EmojiPtr Find(const QString &text, int *outLength = nullptr) {
    //qDebug() << "Find" << text;
    return &globalOne;
}

EmojiPtr FindExact(const QString &text) {
    auto length = 0;
    const auto result = Find(text, &length);
    return (length < text.size()) ? nullptr : result;
}

LangPackData ReadLocalCache() {
    QFile file("C:/Users/Faraz/AppData/Roaming/Telegram Desktop/tdata/emoji/keywords/fa");
    if (!file.open(QIODevice::ReadOnly)) {
        qDebug() << "ReadLocalCache 1";
        return {};
    }
    auto result = LangPackData();
    QDataStream stream(&file);
    stream.setVersion(QDataStream::Qt_5_1);
    auto version = qint32();
    auto count = qint32();
    stream
        >> version
        >> count;
    if (version < 0 || count < 0 || stream.status() != QDataStream::Ok) {
        qDebug() << "ReadLocalCache 2";
        return {};
    }
    for (auto i = 0; i != count; ++i) {
        auto key = QString();
        auto size = qint32();
        stream
            >> key
            >> size;
        if (size < 0 || stream.status() != QDataStream::Ok) {
            qDebug() << "ReadLocalCache 3";
            return {};
        }
        auto &list = result.emoji[key];
        for (auto j = 0; j != size; ++j) {
            auto text = QString();
            stream >> text;
            if (stream.status() != QDataStream::Ok) {
                qDebug() << "ReadLocalCache 4";
                return {};
            }
            const auto emoji = MustAddPostfix(text)
                ? (text + QChar(Ui::Emoji::kPostfix))
                : text;
            const auto entry = LangPackEmoji{ FindExact(emoji), text };
            if (!entry.emoji) {
                //qDebug() << "ReadLocalCache 5";
                //return {};
            }
            list.push_back(entry);
        }
        result.maxKeyLength = std::max(result.maxKeyLength, key.size());
    }
    result.version = version;
    qDebug() << "ReadLocalCache 6";
    return result;
}

int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);

    auto x = ReadLocalCache();
    qDebug() << "version" << x.version;
    qDebug() << "maxKeyLength" << x.maxKeyLength;
    qDebug() << "emoji" << x.emoji.size();

    for (const auto& [key, value] : x.emoji) {
        std::cout << key.toUtf8().toBase64().toStdString() << std::endl;
    }

    return a.exec();
}