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87 lines
2 KiB
C++
87 lines
2 KiB
C++
// Ryzom - MMORPG Framework <http://dev.ryzom.com/projects/ryzom/>
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// Copyright (C) 2010 Winch Gate Property Limited
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as
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// published by the Free Software Foundation, either version 3 of the
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// 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 Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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#ifndef NL_CDB_CHECK_SUM_H
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#define NL_CDB_CHECK_SUM_H
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#include "nel/misc/types_nl.h"
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/**
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* class implementing check sum for the client database
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* these check sum can be used to ensure that linked properties have all been modified
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* \author Nicolas Brigand
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* \author Nevrax France
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* \date 2002
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*/
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class CCDBCheckSum
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{
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public:
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///constructor
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CCDBCheckSum();
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//clear the sum
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void clear()
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{
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_Sum = 0;
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};
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///add an uint8 to the sum
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void add(uint8 el);
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///add a value to the check sum
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template <class T>
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void add(const T & el)
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{
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T value = el;
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for (uint8 i=0; i< sizeof(T); i++)
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{
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uint8 tmp = (uint8)(value & 0xFF);
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add(tmp);
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value >>=8;
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}
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}
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///add a vector to the sum
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template <class T>
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void addVector(const std::vector<T> & vect)
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{
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for (typename std::vector<T>::const_iterator it = vect.begin(); it != vect.end(); it++)
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add(*it);
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}
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uint32 getSum()
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{
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return _Sum;
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}
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private:
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///the checsum result
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uint32 _Sum;
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///the following values are used in the check algorithm
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uint32 _Factor;
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uint32 _Const1;
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uint32 _Const2;
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};
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#endif // NL_CDB_CHECK_SUM_H
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/* End of cdb_check_sum.h */
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