Add a new simple and command line async writer example

Change-Id: I8f33126de5c78da9a4a0dbddd16eecde7044f0c5
Reviewed-by: Sergey Belyashov <Sergey.Belyashov@gmail.com>
Reviewed-by: Denis Shienkov <denis.shienkov@gmail.com>

1 files changed, 103 insertions, 0 deletions

diff --git a/examples/serialport/cwriterasync/serialportwriter.cpp b/examples/serialport/cwriterasync/serialportwriter.cpp
new file mode 100644
index 0000000..99de005
--- /dev/null
+++ b/examples/serialport/cwriterasync/serialportwriter.cpp
@@ -0,0 +1,103 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Laszlo Papp <lpapp@kde.org>
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the QtSerialPort module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "serialportwriter.h"
+
+#include <QCoreApplication>
+
+QT_USE_NAMESPACE
+
+SerialPortWriter::SerialPortWriter(QSerialPort *serialPort, QObject *parent)
+    : QObject(parent)
+    , m_serialPort(serialPort)
+    , m_standardOutput(stdout)
+    , m_bytesWritten(0)
+{
+    m_timer.setSingleShot(true);
+    connect(m_serialPort, SIGNAL(bytesWritten(qint64)), SLOT(handleBytesWritten(qint64)));
+    connect(m_serialPort, SIGNAL(error(QSerialPort::SerialPortError)), SLOT(handleError(QSerialPort::SerialPortError)));
+    connect(&m_timer, SIGNAL(timeout()), SLOT(handleTimeout()));
+}
+
+SerialPortWriter::~SerialPortWriter()
+{
+}
+
+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;
+
+    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);
+}