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path: root/examples/serialport/cwriterasync/serialportwriter.cpp
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/****************************************************************************
**
** Copyright (C) 2013 Laszlo Papp <lpapp@kde.org>
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtSerialPort module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** BSD License Usage
** Alternatively, you may use this file under the terms of the BSD license
** as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
**   * Redistributions of source code must retain the above copyright
**     notice, this list of conditions and the following disclaimer.
**   * Redistributions in binary form must reproduce the above copyright
**     notice, this list of conditions and the following disclaimer in
**     the documentation and/or other materials provided with the
**     distribution.
**   * Neither the name of The Qt Company Ltd nor the names of its
**     contributors may be used to endorse or promote products derived
**     from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "serialportwriter.h"

#include <QCoreApplication>

SerialPortWriter::SerialPortWriter(QSerialPort *serialPort, QObject *parent) :
    QObject(parent),
    m_serialPort(serialPort),
    m_standardOutput(stdout)
{
    m_timer.setSingleShot(true);
    connect(m_serialPort, &QSerialPort::bytesWritten,
            this, &SerialPortWriter::handleBytesWritten);
    connect(m_serialPort, &QSerialPort::errorOccurred,
            this, &SerialPortWriter::handleError);
    connect(&m_timer, &QTimer::timeout, this, &SerialPortWriter::handleTimeout);
}

void SerialPortWriter::handleBytesWritten(qint64 bytes)
{
    m_bytesWritten += bytes;
    if (m_bytesWritten == m_writeData.size()) {
        m_bytesWritten = 0;
        m_standardOutput << QObject::tr("Data successfully sent to port %1")
                            .arg(m_serialPort->portName()) << endl;
        QCoreApplication::quit();
    }
}

void SerialPortWriter::handleTimeout()
{
    m_standardOutput << QObject::tr("Operation timed out for port %1, error: %2")
                        .arg(m_serialPort->portName())
                        .arg(m_serialPort->errorString())
                     << endl;
    QCoreApplication::exit(1);
}

void SerialPortWriter::handleError(QSerialPort::SerialPortError serialPortError)
{
    if (serialPortError == QSerialPort::WriteError) {
        m_standardOutput << QObject::tr("An I/O error occurred while writing"
                                        " the data to port %1, error: %2")
                            .arg(m_serialPort->portName())
                            .arg(m_serialPort->errorString())
                         << endl;
        QCoreApplication::exit(1);
    }
}

void SerialPortWriter::write(const QByteArray &writeData)
{
    m_writeData = writeData;

    const qint64 bytesWritten = m_serialPort->write(writeData);

    if (bytesWritten == -1) {
        m_standardOutput << QObject::tr("Failed to write the data to port %1, error: %2")
                            .arg(m_serialPort->portName())
                            .arg(m_serialPort->errorString())
                         << endl;
        QCoreApplication::exit(1);
    } else if (bytesWritten != m_writeData.size()) {
        m_standardOutput << QObject::tr("Failed to write all the data to port %1, error: %2")
                            .arg(m_serialPort->portName())
                            .arg(m_serialPort->errorString())
                         << endl;
        QCoreApplication::exit(1);
    }

    m_timer.start(5000);
}