File indexing completed on 2024-05-05 12:18:01

 /*
     This file is part of the KDE libraries
     SPDX-FileCopyrightText: 2003 Leo Savernik <l.savernik@aon.at>
     Derived from slave.cpp
 
     SPDX-License-Identifier: LGPL-2.0-only
 */
 
 #include "commands_p.h"
 #include "dataprotocol_p.h"
 #include "dataworker_p.h"
 #include "slavebase.h"
 
 #include <KLocalizedString>
 
 #include <QDataStream>
 #include <QTimer>
 
 using namespace KIO;
 
 static constexpr int s_kioDataPollInterval = 0;
 
 // don't forget to sync DISPATCH_DECL in dataworker_p.h
 /* clang-format off */
 #define DISPATCH_IMPL(type) \
     void DataWorker::dispatch_##type() \
     { \
         if (_suspended) { \
             QueueStruct q(Queue_##type); \
             q.size = -1; \
             dispatchQueue.push_back(q); \
             if (!timer->isActive()) { \
                 timer->start(s_kioDataPollInterval); \
             } \
         } else \
             Q_EMIT type(); \
     }
 
 // don't forget to sync DISPATCH_DECL1 in dataworker_p.h
 #define DISPATCH_IMPL1(type, paramtype, paramname) \
     void DataWorker::dispatch_##type(paramtype paramname) \
     { \
         if (_suspended) { \
             QueueStruct q(Queue_##type); \
             q.paramname = paramname; \
             dispatchQueue.push_back(q); \
             if (!timer->isActive()) { \
                 timer->start(s_kioDataPollInterval); \
             } \
         } else \
             Q_EMIT type(paramname); \
     }
 
 DataWorker::DataWorker()
     : Slave(QStringLiteral("data"))
 {
     // qDebug() << this;
     _suspended = false;
     timer = new QTimer(this);
     connect(timer, &QTimer::timeout, this, &DataWorker::dispatchNext);
 }
 
 DataWorker::~DataWorker()
 {
     // qDebug() << this;
 }
 
 void DataWorker::hold(const QUrl & /*url*/)
 {
     // ignored
 }
 
 void DataWorker::suspend()
 {
     _suspended = true;
     // qDebug() << this;
     timer->stop();
 }
 
 void DataWorker::resume()
 {
     _suspended = false;
     // qDebug() << this;
     // aarrrgh! This makes the once hyper fast and efficient data protocol
     // implementation slow as molasses. But it wouldn't work otherwise,
     // and I don't want to start messing around with threads
     timer->start(s_kioDataPollInterval);
 }
 
 // finished is a special case. If we emit it right away, then
 // TransferJob::start can delete the job even before the end of the method
 void DataWorker::dispatch_finished()
 {
     QueueStruct q(Queue_finished);
     q.size = -1;
     dispatchQueue.push_back(q);
     if (!timer->isActive()) {
         timer->start(s_kioDataPollInterval);
     }
 }
 
 void DataWorker::dispatchNext()
 {
     if (dispatchQueue.empty()) {
         timer->stop();
         return;
     }
 
     const QueueStruct &q = dispatchQueue.front();
     // qDebug() << this << "dispatching" << q.type << dispatchQueue.size() << "left";
     switch (q.type) {
     case Queue_mimeType:
         Q_EMIT mimeType(q.s);
         break;
     case Queue_totalSize:
         Q_EMIT totalSize(q.size);
         break;
     case Queue_sendMetaData:
         sendMetaData();
         break;
     case Queue_data:
         Q_EMIT data(q.ba);
         break;
     case Queue_finished:
         Q_EMIT finished();
         break;
     } /*end switch*/
 
     dispatchQueue.pop_front();
 }
 
 void DataWorker::send(int cmd, const QByteArray &arr)
 {
     QDataStream stream(arr);
 
     QUrl url;
 
     switch (cmd) {
     case CMD_GET: {
         stream >> url;
         get(url);
         break;
     }
     case CMD_MIMETYPE: {
         stream >> url;
         mimetype(url);
         break;
     }
     // ignore these (must not emit error, otherwise SIGSEGV occurs)
     case CMD_REPARSECONFIGURATION:
     case CMD_META_DATA:
     case CMD_SUBURL:
         break;
     default:
         Q_EMIT error(ERR_UNSUPPORTED_ACTION, unsupportedActionErrorString(QStringLiteral("data"), cmd));
     } /*end switch*/
 }
 
 bool DataWorker::suspended()
 {
     return _suspended;
 }
 
 void DataWorker::setHost(const QString & /*host*/, quint16 /*port*/, const QString & /*user*/, const QString & /*passwd*/)
 {
     // irrelevant -> will be ignored
 }
 
 void DataWorker::setConfig(const MetaData & /*config*/)
 {
     // FIXME: decide to handle this directly or not at all
 #if 0
     QByteArray data;
     QDataStream stream(data, QIODevice::WriteOnly);
     stream << config;
     slaveconn.send(CMD_CONFIG, data);
 #endif
 }
 
 void DataWorker::setAllMetaData(const MetaData &md)
 {
     meta_data = md;
 }
 
 void DataWorker::sendMetaData()
 {
     Q_EMIT metaData(meta_data);
 }
 
 DISPATCH_IMPL1(mimeType, const QString &, s)
 DISPATCH_IMPL1(totalSize, KIO::filesize_t, size)
 DISPATCH_IMPL(sendMetaData)
 DISPATCH_IMPL1(data, const QByteArray &, ba)
 
 #undef DISPATCH_IMPL
 #undef DISPATCH_IMPL1
 
 #include "moc_dataworker_p.cpp"