Reading data from socket

[ComaWhite]

I've been trying repeatly and rewritting it over billions of times it seems.

But when I'm connecting to a irc server with my QTcpSocket. Some lines are malformed. where it is split to a new line.

So I thought I could just do it to where check if the line starts without a ':' append it to the previous line. But apparently that causes some lines to be mixed together and what not. And I can't find hardly any resources on doing it correctly.

void
IrcSocket::readSocket() {
    if(!m_ircSocket->canReadLine()) {
        return;
    }
 
    QTextStream stream(m_ircSocket);
    QString data;
 
    do {
        data = stream.readLine();
 
        if(data[0] != ':') {
            QStringList words = data.split(" ");
 
            if(words.count() >= 2) {
                if(words[0] == "NOTICE" && words[1] == "AUTH") {
                    QRegExp reg("^NOTICE AUTH :(.+)$");
 
                    if(reg.exactMatch(data)) {
                        emit noticeAuth(reg.cap(1));
                    }
                } else {
                    data.append(stream.readLine());
                }
            } else {
                data.append(stream.readLine());
            }
        } else {
            QStringList words = data.split(" ");
 
            switch(words[1].toUInt()) {
                case 001: {
                    QRegExp reg("^[^ ]+ 001 [^ ]+ :(.+)$", Qt::CaseInsensitive);
 
                    if(reg.exactMatch(data)) {
                        emit welcome(reg.cap(1));
                    } else {
                        data.append(stream.readLine());
                    }
                }
                case ReplyCode::RPL_MOTDSTART: {
                    QRegExp reg("^[^ ]+ 375 [^ ]+ :(.+)$", Qt::CaseInsensitive);
 
                    if(reg.exactMatch(data)) {
                        emit motdStart(reg.cap(1));
                    } else {
                        data.append(stream.readLine());
                    }
                    break;
                }
                case ReplyCode::RPL_MOTD: {
                    QRegExp reg("^[^ ]+ 327 [^ ]+ :(.+)$", Qt::CaseInsensitive);
                    kDebug() << data;
                    if(reg.exactMatch(data)) {
                        kDebug() << "TEST: " << reg.cap(1);
                        data.clear();
                    } else {
                        data.append(stream.readLine());
                    }
                    break;
                }
                default: {
                    data.append(stream.readLine());
                    break;
                }
            }
        }
 
        kDebug() << data;
    } while(!stream.atEnd());
}

void
IrcSocket::readSocket() {
    if(!m_ircSocket->canReadLine()) {
        return;
    }

    QTextStream stream(m_ircSocket);
    QString data;

    do {
        data = stream.readLine();

        if(data[0] != ':') {
            QStringList words = data.split(" ");

            if(words.count() >= 2) {
                if(words[0] == "NOTICE" && words[1] == "AUTH") {
                    QRegExp reg("^NOTICE AUTH :(.+)$");

                    if(reg.exactMatch(data)) {
                        emit noticeAuth(reg.cap(1));
                    }
                } else {
                    data.append(stream.readLine());
                }
            } else {
                data.append(stream.readLine());
            }
        } else {
            QStringList words = data.split(" ");

            switch(words[1].toUInt()) {
                case 001: {
                    QRegExp reg("^[^ ]+ 001 [^ ]+ :(.+)$", Qt::CaseInsensitive);

                    if(reg.exactMatch(data)) {
                        emit welcome(reg.cap(1));
                    } else {
                        data.append(stream.readLine());
                    }
                }
                case ReplyCode::RPL_MOTDSTART: {
                    QRegExp reg("^[^ ]+ 375 [^ ]+ :(.+)$", Qt::CaseInsensitive);

                    if(reg.exactMatch(data)) {
                        emit motdStart(reg.cap(1));
                    } else {
                        data.append(stream.readLine());
                    }
                    break;
                }
                case ReplyCode::RPL_MOTD: {
                    QRegExp reg("^[^ ]+ 327 [^ ]+ :(.+)$", Qt::CaseInsensitive);
                    kDebug() << data;
                    if(reg.exactMatch(data)) {
                        kDebug() << "TEST: " << reg.cap(1);
                        data.clear();
                    } else {
                        data.append(stream.readLine());
                    }
                    break;
                }
                default: {
                    data.append(stream.readLine());
                    break;
                }
            }
        }

        kDebug() << data;
    } while(!stream.atEnd());
}

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[jpn]

How about reading the data to a buffer whenever new data comes available, and reading complete lines from the buffer?