103 lines
3.5 KiB
C++
103 lines
3.5 KiB
C++
/**
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* Copyright 2019 Matthijs Tijink <matthijstijink@gmail.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License or (at your option) version 3 or any later version
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* accepted by the membership of KDE e.V. (or its successor approved
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* by the membership of KDE e.V.), which shall act as a proxy
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* defined in Section 14 of version 3 of the license.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "multiplexchannel.h"
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#include "multiplexchannelstate.h"
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#include "core_debug.h"
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MultiplexChannel::MultiplexChannel(QSharedPointer<MultiplexChannelState> state) : state{state} {
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QIODevice::open(QIODevice::ReadWrite);
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connect(this, &QIODevice::aboutToClose, state.data(), &MultiplexChannelState::requestClose);
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connect(state.data(), &MultiplexChannelState::readyRead, this, &QIODevice::readyRead);
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connect(state.data(), &MultiplexChannelState::bytesWritten, this, &QIODevice::bytesWritten);
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connect(state.data(), &MultiplexChannelState::disconnected, this, &MultiplexChannel::disconnect);
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}
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MultiplexChannel::~MultiplexChannel() {}
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bool MultiplexChannel::atEnd() const {
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return !isOpen() || (!state->connected && state->read_buffer.isEmpty());
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}
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void MultiplexChannel::disconnect() {
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state->connected = false;
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setOpenMode(QIODevice::ReadOnly);
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Q_EMIT state->readyRead();
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Q_EMIT state->requestClose();
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if (state->read_buffer.isEmpty()) {
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close();
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}
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}
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qint64 MultiplexChannel::bytesAvailable() const {
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return state->read_buffer.size() + QIODevice::bytesAvailable();
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}
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qint64 MultiplexChannel::bytesToWrite() const {
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return state->write_buffer.size() + QIODevice::bytesToWrite();
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}
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qint64 MultiplexChannel::readData(char* data, qint64 maxlen) {
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if (maxlen <= state->read_buffer.size()) {
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for (int i = 0; i < maxlen; ++i) {
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data[i] = state->read_buffer[i];
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}
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state->read_buffer.remove(0, maxlen);
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Q_EMIT state->readAvailable();
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if (!state->connected && state->read_buffer.isEmpty()) {
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close();
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}
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return maxlen;
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} else if (state->read_buffer.size() > 0) {
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auto num_to_read = state->read_buffer.size();
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for (int i = 0; i < num_to_read; ++i) {
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data[i] = state->read_buffer[i];
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}
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state->read_buffer.remove(0, num_to_read);
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Q_EMIT state->readAvailable();
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if (!state->connected && state->read_buffer.isEmpty()) {
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close();
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}
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return num_to_read;
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} else if (isOpen() && state->connected) {
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if (state->requestedReadAmount < BUFFER_SIZE) {
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Q_EMIT state->readAvailable();
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}
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return 0;
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} else {
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close();
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return -1;
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}
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}
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qint64 MultiplexChannel::writeData(const char* data, qint64 len) {
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state->write_buffer.append(data, len);
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Q_EMIT state->writeAvailable();
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return len;
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}
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bool MultiplexChannel::canReadLine() const {
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return isReadable() && (QIODevice::canReadLine() || state->read_buffer.contains('\n'));
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}
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bool MultiplexChannel::isSequential() const {
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return true;
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}
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