File indexing completed on 2024-05-12 04:58:51

 /**
  * SPDX-FileCopyrightText: 2019 Matthijs Tijink <matthijstijink@gmail.com>
  *
  * SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
  */
 
 #include "multiplexchannel.h"
 #include "core_debug.h"
 #include "multiplexchannelstate.h"
 
 MultiplexChannel::MultiplexChannel(QSharedPointer<MultiplexChannelState> state)
     : state{state}
 {
     QIODevice::open(QIODevice::ReadWrite);
 
     connect(this, &QIODevice::aboutToClose, state.data(), &MultiplexChannelState::requestClose);
     connect(state.data(), &MultiplexChannelState::readyRead, this, &QIODevice::readyRead);
     connect(state.data(), &MultiplexChannelState::bytesWritten, this, &QIODevice::bytesWritten);
     connect(state.data(), &MultiplexChannelState::disconnected, this, &MultiplexChannel::disconnect);
 }
 
 MultiplexChannel::~MultiplexChannel()
 {
 }
 
 bool MultiplexChannel::atEnd() const
 {
     return !isOpen() || (!state->connected && state->read_buffer.isEmpty());
 }
 
 void MultiplexChannel::disconnect()
 {
     state->connected = false;
     setOpenMode(QIODevice::ReadOnly);
     Q_EMIT state->readyRead();
     Q_EMIT state->requestClose();
     if (state->read_buffer.isEmpty()) {
         close();
     }
 }
 
 qint64 MultiplexChannel::bytesAvailable() const
 {
     return state->read_buffer.size() + QIODevice::bytesAvailable();
 }
 
 qint64 MultiplexChannel::bytesToWrite() const
 {
     return state->write_buffer.size() + QIODevice::bytesToWrite();
 }
 
 qint64 MultiplexChannel::readData(char *data, qint64 maxlen)
 {
     if (maxlen <= state->read_buffer.size()) {
         for (int i = 0; i < maxlen; ++i) {
             data[i] = state->read_buffer[i];
         }
         state->read_buffer.remove(0, maxlen);
         Q_EMIT state->readAvailable();
         if (!state->connected && state->read_buffer.isEmpty()) {
             close();
         }
         return maxlen;
     } else if (state->read_buffer.size() > 0) {
         auto num_to_read = state->read_buffer.size();
         for (int i = 0; i < num_to_read; ++i) {
             data[i] = state->read_buffer[i];
         }
         state->read_buffer.remove(0, num_to_read);
         Q_EMIT state->readAvailable();
         if (!state->connected && state->read_buffer.isEmpty()) {
             close();
         }
         return num_to_read;
     } else if (isOpen() && state->connected) {
         if (state->requestedReadAmount < BUFFER_SIZE) {
             Q_EMIT state->readAvailable();
         }
         return 0;
     } else {
         close();
         return -1;
     }
 }
 
 qint64 MultiplexChannel::writeData(const char *data, qint64 len)
 {
     state->write_buffer.append(data, len);
     Q_EMIT state->writeAvailable();
     return len;
 }
 
 bool MultiplexChannel::canReadLine() const
 {
     return isReadable() && (QIODevice::canReadLine() || state->read_buffer.contains('\n'));
 }
 
 bool MultiplexChannel::isSequential() const
 {
     return true;
 }
 
 #include "moc_multiplexchannel.cpp"