#pragma once

#include <cstdint>    // 添加标准整数类型支持
#include <cstddef>    // 添加 size_t 支持

#ifdef CRC64_EXPORTS
#define CRC64_API 
#define CRC64_C_API extern "C"
#else
#define CRC64_API 
#define CRC64_C_API extern "C"
#endif

// 定义跨平台类型别名
using DWORD = unsigned long;  // Linux 兼容的 DWORD 类型
using UINT64 = uint64_t;      // 标准 64 位无符号整数
using UINT4 = uint32_t;       // 标准 32 位无符号整数
using UINT2 = uint16_t;       // 标准 16 位无符号整数
using POINTER = unsigned char*;

// 此类是从 Crc64.dll 导出的
class CCrc64 {
public:
	CCrc64(void);
	// TODO:  在此添加您的方法。
};

class CCrc32 {
public:
	CCrc32(void);
	// TODO:  在此添加您的方法。
};


CRC64_C_API UINT64 GetCrc64(const char *pSrc, DWORD size);
CRC64_API int GetCrc32(const char *pSrc, size_t size);

CRC64_API unsigned short CRC16(const unsigned char* pDataIn, size_t iLenIn);


/* PROTOTYPES should be set to one if and only if the compiler supports
function argument prototyping.
The following makes PROTOTYPES default to 0 if it has not already
been defined with C compiler flags.
*/

#ifndef PROTOTYPES
#define PROTOTYPES 0
#endif

/* POINTER defines a generic pointer type */
//typedef unsigned char *POINTER;
//
///* UINT2 defines a two byte word */
//typedef unsigned short int UINT2;
//
///* UINT4 defines a four byte word */
//typedef unsigned long int UINT4;

/* PROTO_LIST is defined depending on how PROTOTYPES is defined above.
If using PROTOTYPES, then PROTO_LIST returns the list, otherwise it
returns an empty list.
*/
#if PROTOTYPES
#define PROTO_LIST(list) list
#else
#define PROTO_LIST(list) ()
#endif

/* MD5 context. */
typedef struct _MD5_CTX{
	UINT4 state[4];          /* state (ABCD) */
	UINT4 count[2];          /* number of bits, modulo 2^64 (lsb first) */
	unsigned char buffer[64];/* input buffer */
} MD5_CTX;

CRC64_C_API void MD5Init(MD5_CTX *);
CRC64_C_API void MD5Update(MD5_CTX *, unsigned char *, unsigned int);
CRC64_C_API void MD5Final(unsigned char[16], MD5_CTX *);

/* extended function */
CRC64_C_API int  MDFile(char *filename, char *digest);
CRC64_C_API void MDPrint(unsigned char digest[16]);
CRC64_C_API void MDString(const char *str, unsigned char *digest);
CRC64_C_API void MDData(char *data, int len, unsigned char *digest);