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/*
* Copyright (C) 2017 KeePassXC Team <team@keepassxc.org>
* Copyright (C) 2010 Felix Geyer <debfx@fobos.de>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 or (at your option)
* version 3 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef KEEPASSX_ENDIAN_H
#define KEEPASSX_ENDIAN_H
#include <QByteArray>
#include <QSysInfo>
#include <QtEndian>
#include <QIODevice>
namespace Endian
{
template<typename SizedQInt>
SizedQInt bytesToSizedInt(const QByteArray& ba, QSysInfo::Endian byteOrder)
{
Q_ASSERT(ba.size() == sizeof(SizedQInt));
if (byteOrder == QSysInfo::LittleEndian) {
return qFromLittleEndian<SizedQInt>(reinterpret_cast<const uchar*>(ba.constData()));
}
return qFromBigEndian<SizedQInt>(reinterpret_cast<const uchar*>(ba.constData()));
}
template<typename SizedQInt>
SizedQInt readSizedInt(QIODevice* device, QSysInfo::Endian byteOrder, bool* ok)
{
QByteArray ba = device->read(sizeof(SizedQInt));
if (ba.size() != sizeof(SizedQInt)) {
*ok = false;
return 0;
}
*ok = true;
return bytesToSizedInt<SizedQInt>(ba, byteOrder);
}
template<typename SizedQInt>
QByteArray sizedIntToBytes(SizedQInt num, QSysInfo::Endian byteOrder)
{
QByteArray ba;
ba.resize(sizeof(SizedQInt));
if (byteOrder == QSysInfo::LittleEndian) {
qToLittleEndian<SizedQInt>(num, reinterpret_cast<uchar*>(ba.data()));
} else {
qToBigEndian<SizedQInt>(num, reinterpret_cast<uchar*>(ba.data()));
}
return ba;
}
template<typename SizedQInt>
bool writeSizedInt(SizedQInt num, QIODevice* device, QSysInfo::Endian byteOrder)
{
QByteArray ba = sizedIntToBytes<SizedQInt>(num, byteOrder);
qint64 bytesWritten = device->write(ba);
return (bytesWritten == ba.size());
}
} // namespace Endian
#endif // KEEPASSX_ENDIAN_H
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