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/*
Copyright (C) 2010 Adam Walczak
Copyright (C) 2005-2014 Sergey A. Tachenov
This file is part of QuaZIP.
QuaZIP is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
QuaZIP 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with QuaZIP. If not, see <http://www.gnu.org/licenses/>.
See COPYING file for the full LGPL text.
Original ZIP package is copyrighted by Gilles Vollant and contributors,
see quazip/(un)zip.h files for details. Basically it's the zlib license.
*/
#include "quaadler32.h"
#include "zlib.h"
QuaAdler32::QuaAdler32()
{
reset();
}
quint32 QuaAdler32::calculate(const QByteArray &data)
{
return adler32( adler32(0L, Z_NULL, 0), (const Bytef*)data.data(), data.size() );
}
void QuaAdler32::reset()
{
checksum = adler32(0L, Z_NULL, 0);
}
void QuaAdler32::update(const QByteArray &buf)
{
checksum = adler32( checksum, (const Bytef*)buf.data(), buf.size() );
}
quint32 QuaAdler32::value()
{
return checksum;
}
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