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/* smplayer, GUI front-end for mplayer.
Copyright (C) 2006-2018 Ricardo Villalba <rvm@users.sourceforge.net>
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 of the License, or
(at your option) any later version.
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, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "filehash.h"
#include <QFile>
#include <QDataStream>
// From the patch by Kamil Dziobek turbos11(at)gmail.com
// (c) Kamil Dziobek turbos11(at)gmail.com | BSD or GPL or public domain
QString FileHash::calculateHash(QString filename) {
QFile file(filename);
if (!file.exists()) {
qWarning("OSParser:calculateHash: error hashing file. File doesn't exist.");
return QString();
}
file.open(QIODevice::ReadOnly);
QDataStream in(&file);
in.setByteOrder(QDataStream::LittleEndian);
quint64 size=file.size ();
quint64 hash=size;
quint64 a;
for(int i = 0; i < 8192; i++) {
in >> a ; hash += a;
};
file.seek(size-65536);
for(int i = 0; i < 8192; i++) {
in >> a ; hash += a;
};
QString hexhash = QString("%1").arg(hash, 16, 16, QChar('0'));
return hexhash;
}
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