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include/QxSerialize/QxSerializeQDataStream.h Normal file
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/****************************************************************************
**
** https://www.qxorm.com/
** Copyright (C) 2013 XDL Team (ic-east.com)
**
** This file is part of the QxOrm library
**
** This software is provided 'as-is', without any express or implied
** warranty. In no event will the authors be held liable for any
** damages arising from the use of this software
**
** Commercial Usage
** Licensees holding valid commercial QxOrm 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 XDL Team
**
** 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.gpl3.txt' 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
**
** If you are unsure which license is appropriate for your use, or
** if you have questions regarding the use of this file, please contact :
** ic-east.com
**
****************************************************************************/
#ifndef _QX_SERIALIZE_QDATASTREAM_H_
#define _QX_SERIALIZE_QDATASTREAM_H_
#ifdef _MSC_VER
#pragma once
#endif
/*!
* \file QxSerializeQDataStream.h
* \author XDL Team
* \ingroup QxSerialize
* \brief Used when _QX_ENABLE_BOOST_SERIALIZATION compilation option is not defined to provide serialization engine with Qt QDataStream class
*/
#include <exception>
#include <QtCore/qdatastream.h>
#include <QtCore/qfile.h>
#include <QxCommon/QxBool.h>
namespace qx
{
namespace serialization
{
/*!
* \ingroup QxSerialize
* \brief serialize a class registered into QxOrm context using Qt QDataStream serialization engine
*/
namespace qt
{
template <class T>
inline QByteArray to_byte_array(const T &obj, void *owner = NULL, unsigned int flags = 1 /* boost::archive::no_header */)
{
Q_UNUSED(flags);
Q_UNUSED(owner);
QByteArray ba;
QString err;
QDataStream stream((&ba), QIODevice::WriteOnly);
stream << (quint32)(9438);
try
{
stream << obj;
}
catch (const std::exception &e)
{
err = QString("serialization error '%ERR%'").replace("%ERR%", e.what());
}
catch (...)
{
err = QString("serialization error '%ERR%'").replace("%ERR%", "unknown error");
}
if (!err.isEmpty())
{
qDebug("[QxOrm] qx::serialization::qt::to_byte_array() : %s", qPrintable(err));
ba.clear();
}
return ba;
}
template <class T>
inline qx_bool from_byte_array(T &obj, const QByteArray &data, unsigned int flags = 1 /* boost::archive::no_header */)
{
Q_UNUSED(flags);
qx_bool result = false;
if (data.isEmpty())
{
return qx_bool(false, "input binary data is empty");
}
QDataStream stream(data);
quint32 magic = 0;
stream >> magic;
if (magic != 9438)
{
return qx_bool(false, "input binary data is not valid");
}
try
{
stream >> obj;
result = true;
}
catch (const std::exception &e)
{
result.setDesc(QString("deserialization error '%ERR%'").replace("%ERR%", e.what()));
}
catch (...)
{
result.setDesc(QString("deserialization error '%ERR%'").replace("%ERR%", "unknown error"));
}
if (!result.getDesc().isEmpty())
{
QString msg = result.getDesc();
qDebug("[QxOrm] qx::serialization::qt::from_byte_array() : %s", qPrintable(msg));
}
return result;
}
template <class T>
inline QString to_string(const T &obj, unsigned int flags = 1 /* boost::archive::no_header */)
{
return qx::serialization::qt::to_byte_array(obj, NULL, flags).toBase64();
}
template <class T>
inline qx_bool from_string(T &obj, const QString &sString, unsigned int flags = 1 /* boost::archive::no_header */)
{
QByteArray data = QByteArray::fromBase64(sString.toLatin1());
return qx::serialization::qt::from_byte_array(obj, data, flags);
}
template <class T>
inline qx_bool to_file(const T &obj, const QString &sFileName, unsigned int flags = 1 /* boost::archive::no_header */)
{
QByteArray data = qx::serialization::qt::to_byte_array(obj, NULL, flags);
QFile file(sFileName);
if (!file.open(QIODevice::WriteOnly | QIODevice::Truncate))
{
return qx_bool(false, "cannot open file : " + sFileName);
}
file.write(data);
file.close();
return qx_bool(true);
}
template <class T>
inline qx_bool from_file(T &obj, const QString &sFileName, unsigned int flags = 1 /* boost::archive::no_header */)
{
QFile file(sFileName);
if (!file.open(QIODevice::ReadOnly))
{
return qx_bool(false, "cannot open file : " + sFileName);
}
QByteArray data = file.readAll();
file.close();
return qx::serialization::qt::from_byte_array(obj, data, flags);
}
template <class T>
inline qx_bool to_file_compressed(const T &obj, const QString &sFileName, unsigned int flags = 1 /* boost::archive::no_header */, int iCompressionLevel = -1)
{
QByteArray data = qx::serialization::qt::to_byte_array(obj, NULL, flags);
QByteArray compressed = qCompress(data, iCompressionLevel);
QFile file(sFileName);
if (!file.open(QIODevice::WriteOnly | QIODevice::Truncate))
{
return qx_bool(false, "cannot open file : " + sFileName);
}
file.write(compressed);
file.close();
return qx_bool(true);
}
template <class T>
inline qx_bool from_file_compressed(T &obj, const QString &sFileName, unsigned int flags = 1 /* boost::archive::no_header */)
{
QFile file(sFileName);
if (!file.open(QIODevice::ReadOnly))
{
return qx_bool(false, "cannot open file : " + sFileName);
}
QByteArray data = file.readAll();
file.close();
QByteArray uncompressed = qUncompress(data);
return qx::serialization::qt::from_byte_array(obj, uncompressed, flags);
}
} // namespace qt
} // namespace serialization
} // namespace qx
#endif // _QX_SERIALIZE_QDATASTREAM_H_