#pragma once

#include <string>

typedef enum
{
	GBK,
	UTF8,
	UNKOWN
} CODING;

int preNUm(unsigned char byte);
bool isUtf8(unsigned char* data, int len);
bool isGBK(unsigned char* data, int len);
CODING GetCoding(unsigned char* data, int len);
int code_convert(const char* from_charset, const char* to_charset, char* inbuf, size_t inlen, char* outbuf, size_t outlen);
int u2g(char* inbuf, size_t inlen, char* outbuf, size_t outlen);
int g2u(char* inbuf, size_t inlen, char* outbuf, size_t outlen);
bool GBKToUTF8(const std::string& strGBK, std::string& str_result);
bool UTFtoGBK(const char* utf8, std::string& str_result);