60 lines
2.3 KiB
C++
60 lines
2.3 KiB
C++
/*************************************************************************
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* Copyright (C) 2010 by Volker Lanz <vl@fidra.de> *
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* Copyright (C) 2016 by Andrius Štikonas <andrius@stikonas.eu> *
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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/copysourceshred.h"
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/** Constructs a CopySourceShred with the given @p size
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@param s the size the copy source will (pretend to) have
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*/
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CopySourceShred::CopySourceShred(qint64 s, bool randomShred) :
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CopySource(),
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m_Size(s),
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m_SourceFile(randomShred ? QStringLiteral("/dev/urandom") : QStringLiteral("/dev/zero"))
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{
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}
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/** Opens the shred source.
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@return true on success
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*/
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bool CopySourceShred::open()
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{
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return sourceFile().open(QIODevice::ReadOnly);
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}
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/** Returns the length of the source in bytes.
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@return length of the source in bytes.
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*/
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qint64 CopySourceShred::length() const
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{
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return size();
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}
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/** Reads the given number of bytes from the source into the given buffer.
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@param buffer buffer to store the data read in
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@param readOffset offset where to begin reading (unused)
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@param size the number of bytes to read
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@return true on success
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*/
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bool CopySourceShred::readData(QByteArray& buffer, qint64 readOffset, qint64 size)
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{
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Q_UNUSED(readOffset);
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buffer = sourceFile().read(size);
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return !buffer.isEmpty();
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}
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