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1、查看字符编码
查询汉字GBK、UTF8、UNICODE编码的值的网站如下：
汉字字符集编码查询；中文字符集编码：GB2312、BIG5、GBK、GB18030、Unicode (qqxiuzi.cn)
“汉字”编码的数据如下：
现使用程序demo进行验证：
// Encode.cpp : 此文件包含 "main" 函数。程序执行将在此处开始并结束。
//
#include
#include
#include
using namespace std;
//将wstring转换成string
string wstring2string(wstring wstr,UINT nCode)
{
string result;
//获取缓冲区大小，并申请空间，缓冲区大小事按字节计算的
int len = WideCharToMultiByte(nCode, 0, wstr.c_str(), wstr.size(), NULL, 0, NULL, NULL);
char* buffer = new char[len + 1];
//宽字节编码转换成多字节编码
WideCharToMultiByte(nCode, 0, wstr.c_str(), wstr.size(), buffer, len, NULL, NULL);
buffer[len] = '\0';
//删除缓冲区并返回值
result.append(buffer);
delete[] buffer;
return result;
}
int main()
{
char szChn1[20] = {"汉字"};
wstring wstrChn = L"汉字";
string strCh = wstring2string(wstrChn,CP_UTF8);
char szChn2[20] = { 0 };
int nSize = sizeof(strCh);
int nlen = strCh.length();
int nStrlen = strlen(strCh.c_str());
strncpy_s(szChn2,strCh.c_str(), nStrlen);
std::cout = 0x80)
{
if (ch >= 0xFC && ch = 0xF8)
{
nBytes = 5;
}
else if (ch >= 0xF0)
{
nBytes = 4;
}
else if (ch >= 0xE0)
{
nBytes = 3;
}
else if (ch >= 0xC0)
{
nBytes = 2;
}
else
{
return Encode::ANSI;
}
nBytes--;
}
}
else
{
if ((ch & 0xC0) != 0x80)
{
return Encode::ANSI;
}
nBytes--;
}
}
if (nBytes > 0 || bAnsi)
{
return Encode::ANSI;
}
return Encode::UTF8;
}
Encode DetectEncode(const uint8_t* data, size_t size)
{
if (size > 2 && data[0] == 0xFF && data[1] == 0xFE)
{
return Encode::UTF16_LE;
}
else if (size > 2 && data[0] == 0xFE && data[1] == 0xFF)
{
return Encode::UTF16_BE;
}
else if (size > 3 && data[0] == 0xEF && data[1] == 0xBB && data[2] == 0xBF)
{
return Encode::UTF8_BOM;
}
else
{
return IsUtf8Data(data, size);
}
}
/
int main()
{
char szChn1[5] = {"汉字"};
wstring wstrChn = L"汉字";
string strCh = wstring2string(wstrChn,CP_UTF8);
char szChn2[7] = { 0 };
int nSize = sizeof(strCh);
int nlen = strCh.length();
int nStrlen = strlen(strCh.c_str());
strncpy_s(szChn2,strCh.c_str(), nStrlen);
Encode emCode1;
emCode1 = IsUtf8Data((const unsigned char*)szChn1,strlen(szChn1));
Encode emCode2;
emCode2 = IsUtf8Data((const unsigned char*)szChn2, strlen(szChn2));
std::cout |