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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#ifndef CRC_H
#define CRC_H
#include <string>
/** @brief An updateable CRC-32 checksum. */
class CRC
{
private:
template<class T>
CRC& Up(T data) {
Update((void*) &data, sizeof(data));
return *this;
}
public:
/** @brief Construct a new CRC object. */
CRC();
/** @brief Get the final CRC digest. */
unsigned int GetDigest() const;
static unsigned int GetCRC(const void* data, unsigned int size);
/** @brief Update CRC over the data. */
CRC& Update(const void* data, unsigned int size);
/** @brief Update CRC over the 4 bytes of data. */
CRC& Update(unsigned int data);
CRC& operator<<(int data) { return Up(data); }
CRC& operator<<(unsigned data) { return Up(data); }
CRC& operator<<(float data) { return Up(data); }
private:
unsigned int crc;
};
#endif // !CRC_H
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