63 lines
2.3 KiB
C++
63 lines
2.3 KiB
C++
/*************************************************************************
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* Copyright (C) 2008 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/copysourcefile.h"
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#include <QFile>
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#include <QFileInfo>
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/** Constructs a CopySourceFile from the given @p filename.
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@param filename filename of the file to copy from
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*/
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CopySourceFile::CopySourceFile(const QString& filename) :
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CopySource(),
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m_File(filename)
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{
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}
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/** Opens the file.
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@return true on success
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*/
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bool CopySourceFile::open()
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{
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return file().open(QIODevice::ReadOnly);
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}
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/** Returns the length of the file in bytes.
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@return length of the file in bytes.
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*/
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qint64 CopySourceFile::length() const
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{
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return QFileInfo(file()).size();
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}
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/** Reads the given number of bytes from the file into the given buffer.
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@param buffer buffer to store the bytes read in
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@param readOffset offset where to begin reading
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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 CopySourceFile::readData(QByteArray& buffer, qint64 readOffset, qint64 size)
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{
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if (!file().seek(readOffset))
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return false;
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buffer = file().read(size);
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return !buffer.isEmpty();
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}
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