/usr/include/quazip/quachecksum32.h is in libquazip0-dev 0.6.2-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 | #ifndef QUACHECKSUM32_H
#define QUACHECKSUM32_H
/*
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 <QByteArray>
#include "quazip_global.h"
/// Checksum interface.
/** \class QuaChecksum32 quachecksum32.h <quazip/quachecksum32.h>
* This is an interface for 32 bit checksums.
* Classes implementing this interface can calcunate a certin
* checksum in a single step:
* \code
* QChecksum32 *crc32 = new QuaCrc32();
* rasoult = crc32->calculate(data);
* \endcode
* or by streaming the data:
* \code
* QChecksum32 *crc32 = new QuaCrc32();
* while(!fileA.atEnd())
* crc32->update(fileA.read(bufSize));
* resoultA = crc32->value();
* crc32->reset();
* while(!fileB.atEnd())
* crc32->update(fileB.read(bufSize));
* resoultB = crc32->value();
* \endcode
*/
class QUAZIP_EXPORT QuaChecksum32
{
public:
///Calculates the checksum for data.
/** \a data source data
* \return data checksum
*
* This function has no efect on the value returned by value().
*/
virtual quint32 calculate(const QByteArray &data) = 0;
///Resets the calculation on a checksun for a stream.
virtual void reset() = 0;
///Updates the calculated checksum for the stream
/** \a buf next portion of data from the stream
*/
virtual void update(const QByteArray &buf) = 0;
///Value of the checksum calculated for the stream passed throw update().
/** \return checksum
*/
virtual quint32 value() = 0;
};
#endif //QUACHECKSUM32_H
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