74 lines
2.6 KiB
C++
74 lines
2.6 KiB
C++
/*************************************************************************
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* Copyright (C) 2008 by Volker Lanz <vl@fidra.de> *
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* *
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* This program is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU General Public License as *
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* published by the Free Software Foundation; either version 3 of *
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* the License, or (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program. If not, see <http://www.gnu.org/licenses/>.*
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*************************************************************************/
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#include "core/copytargetdevice.h"
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#include "backend/corebackend.h"
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#include "backend/corebackendmanager.h"
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#include "backend/corebackenddevice.h"
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#include "core/device.h"
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/** Constructs a device to copy to.
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@param d the Device to copy to
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@param firstbyte the first byte on the Device to write to
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@param lastbyte the last byte on the Device to write to
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*/
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CopyTargetDevice::CopyTargetDevice(Device& d, qint64 firstbyte, qint64 lastbyte) :
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CopyTarget(),
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m_Device(d),
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m_BackendDevice(nullptr),
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m_FirstByte(firstbyte),
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m_LastByte(lastbyte)
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{
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}
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/** Destructs a CopyTargetDevice */
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CopyTargetDevice::~CopyTargetDevice()
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{
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delete m_BackendDevice;
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}
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/** Opens a CopyTargetDevice for writing to.
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@return true on success
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*/
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bool CopyTargetDevice::open()
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{
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m_BackendDevice = CoreBackendManager::self()->backend()->openDeviceExclusive(device());
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return m_BackendDevice != nullptr;
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}
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/** Writes the given number of bytes to the Device.
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Note that @p writeOffset must be greater or equal than zero.
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@param buffer the data to write
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@param writeOffset where to start writing on the Device
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@return true on success
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*/
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bool CopyTargetDevice::writeData(QByteArray& buffer, qint64 writeOffset)
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{
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Q_ASSERT(writeOffset >= 0);
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bool rval = m_BackendDevice->writeData(buffer, writeOffset);
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if (rval)
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setBytesWritten(bytesWritten() + buffer.size());
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return rval;
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}
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