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
|
/* 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. */
uint32_t GetDigest() const;
static uint32_t InitTable();
static uint32_t CalcDigest(const void* data, size_t size);
/** @brief Update CRC over the data. */
CRC& Update(const void* data, size_t size);
/** @brief Update CRC over the 4 bytes of data. */
CRC& Update(uint32_t data);
CRC& operator << ( int32_t data) { return Up(data); }
CRC& operator << (uint32_t data) { return Up(data); }
CRC& operator << ( float data) { return Up(data); }
private:
uint32_t crc;
};
#endif // !CRC_H
|
