读取UTF-8格式文本文件
去掉文件头的三个字节,先将文本数据读到char数组之中,然后将多字节UTF8字符串转换成宽字符的UNICODE字符串,然后将UNICODE字符串转换成char型字符串或者直接复制到CString中(UTF-8和char都属于MultiByte char,不能直接相互转换)
BOOL ReadUTF8StringFile(CString Path, CString& str)
{
CFile fileR;
if(!fileR.Open(Path,CFile::modeRead|CFile::typeBinary))
{
MessageBox(NULL,_T("无法打开文件:")+Path,_T("错误"),MB_ICONERROR|MB_OK);
return false;
}
BYTE head[3];
fileR.Read(head,3);
if(!(head[0]==0xEF && head[1]==0xBB && head[2]==0xBF))
{
fileR.SeekToBegin();
}
ULONGLONG FileSize=fileR.GetLength();
char* pContent=(char*)calloc(FileSize+1,sizeof(char));
fileR.Read(pContent,FileSize);
fileR.Close();
int n=MultiByteToWideChar(CP_UTF8,0,pContent,FileSize+1,NULL,0);
wchar_t* pWideChar=(wchar_t*)calloc(n+1,sizeof(wchar_t));
MultiByteToWideChar(CP_UTF8,0,pContent,FileSize+1,pWideChar,n);
str=CString(pWideChar);
free(pContent);
free(pWideChar);
return true;
}