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/******************************************************************************
**
** Copyright (C) 2018 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtKnx module.
**
** $QT_BEGIN_LICENSE:GPL$
** 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.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
******************************************************************************/
#include "qknxutf8string.h"
#include "qknxdatapointtype_p.h"
#include <QtCore/qstringconverter.h>
QT_BEGIN_NAMESPACE
/*!
\class QKnxUtf8String
\inherits QKnxVariableSizeDatapointType
\inmodule QtKnx
\ingroup qtknx-datapoint-types
\since 5.11
\brief The QKnxUtf8String class is a datapoint type for a UTF-8 string.
This datapoint type stores a \l {UTF-8} (Unicode Transformation Format-8)
string. The data length for one character can vary from 1 to 4
octets. Each character is encoded according to UTF-8.
This is a variable sized datapoint type.
\sa QKnxDatapointType, QKnxUtf8, {Qt KNX Datapoint Type Classes}
*/
// -- QKnxUtf8String
/*!
Creates a variable sized datapoint type.
*/
QKnxUtf8String::QKnxUtf8String()
: QKnxUtf8String(nullptr)
{}
/*!
Creates a variable sized datapoint type that stores the string \a string.
*/
QKnxUtf8String::QKnxUtf8String(const QString &string)
: QKnxUtf8String(string.toUtf8(), string.size())
{}
/*!
Creates a variable sized datapoint type that stores the string \a string
with the length \a size.
*/
QKnxUtf8String::QKnxUtf8String(const char *string, int size)
: QKnxUtf8String(SubType, string, size)
{}
/*!
Creates a variable sized datapoint type with the sub type \a subType that
stores the string \a string with the length \a size.
*/
QKnxUtf8String::QKnxUtf8String(int subType, const char *string, int size)
: QKnxVariableSizeDatapointType(MainType, subType, TypeSize)
{
setDescription(tr("Variable length character string (UTF-8)"));
setRange(QVariant(0x00), QVariant(0xff));
setString(string, size);
}
/*!
Returns the string stored in the datapoint type.
*/
QString QKnxUtf8String::string() const
{
auto data = bytes(); // TODO: fix this
return QString::fromUtf8((const char*) data.constData(), data.size() - 1);
}
/*!
Sets the string stored in the datapoint type to \a string.
If the value is outside the allowed range, returns \c false and does not set
the string.
*/
bool QKnxUtf8String::setString(const QString &string)
{
if (string.size() >= USHRT_MAX)
return false;
auto utf8 = string.toUtf8();
return setBytes(QKnxByteArray(utf8.constData(), utf8.size()) + QKnxByteArray::fromHex("00"), 0,
utf8.size() + 1);
}
/*!
Sets the string stored in the datapoint type to \a string with the length
\a size.
If \a size is \c -1, the full \a string is used.
If the string contains invalid UTF-8 sequences, returns \c false and does
not set the string.
*/
bool QKnxUtf8String::setString(const char *string, int size)
{
auto null = QKnxByteArray::fromHex("00");
if (!string)
return setBytes(null, 0, 1);
size = (size < 0 ? int(strlen(string)) : size);
if (size == 0)
return setBytes(null, 0, 1);
if (size >= USHRT_MAX)
return false;
auto toUtf16 = QStringDecoder(QStringDecoder::Utf8, QStringDecoder::Flag::Stateless);
if (!toUtf16.isValid())
return false;
auto text = toUtf16(QByteArrayView{ string, size });
if (toUtf16.hasError())
return false;
return setString(text);
}
/*!
\reimp
*/
bool QKnxUtf8String::isValid() const
{
return QKnxDatapointType::isValid() && byte(quint8(size()-1)) == 0;
}
// -- QKnxUtf8
/*!
\class QKnxUtf8
\inherits QKnxUtf8String
\inmodule QtKnx
\ingroup qtknx-datapoint-types
\since 5.11
\brief The QKnxUtf8 class is a datapoint type for a UTF-8 string.
This datapoint type stores a \l {UTF-8} (Unicode Transformation Format-8)
string. The data length for one character can vary from 1 to 4
octets. Each character is encoded according to UTF-8.
This is a variable sized datapoint type.
\sa QKnxDatapointType, QKnxUtf8String, {Qt KNX Datapoint Type Classes}
*/
/*!
Creates a variable sized datapoint type.
*/
QKnxUtf8::QKnxUtf8()
: QKnxUtf8(nullptr)
{}
/*!
Creates a variable sized datapoint type that stores the string \a string.
*/
QKnxUtf8::QKnxUtf8(const QString &string)
: QKnxUtf8(string.toUtf8(), string.size())
{}
/*!
Creates a variable sized datapoint type that stores the string \a string
with the length \a size.
*/
QKnxUtf8::QKnxUtf8(const char *string, int size)
: QKnxUtf8String(SubType, string, size)
{}
QT_END_NAMESPACE
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