C / C++ / MFC

filename=filename.Right(filename.GetLength()-filename.ReverseFind('\\')-1);
inputfile.Read(filedata.GetBuffer(0),inputfile.GetLength());
filedata.SetAt(inputfile.GetLength(),'\0');

emailbody+="--0000000002230291k492__V\r\nContent-type: "+fileExt+"\r\n";
emailbody+="Content-Transfer-Encoding: base64\r\nContent-Disposition: attachment; ";
emailbody+="filename=\""+filename+"\"\r\n\r\n";
emailbody+=base64_encode(filedata.GetBuffer(0)).c_str();
emailbody+="\r\n\r\n";
inputfile.Close();

inline std::string base64_encode(const std::string &sString) {
	static const std::string sBase64Table(
		// 0000000000111111111122222222223333333333444444444455555555556666
		// 0123456789012345678901234567890123456789012345678901234567890123
		  "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
		);
	static const char cFillChar = '=';
	std::string::size_type   nLength = sString.length();
	std::string              sResult;
	
	// Allocate memory for the converted string
	sResult.reserve(nLength * 8 / 6 + 1);
	
	for(std::string::size_type nPos = 0; nPos < nLength; nPos++) {
		char cCode;
		
		// Encode the first 6 bits
		cCode = (sString[nPos] >> 2) & 0x3f;
		sResult.append(1, sBase64Table[cCode]);
		
		// Encode the remaining 2 bits with the next 4 bits (if present)
		cCode = (sString[nPos] << 4) & 0x3f;
		if(++nPos < nLength)
			cCode |= (sString[nPos] >> 4) & 0x0f;
		sResult.append(1, sBase64Table[cCode]);
		
		if(nPos < nLength) {
			cCode = (sString[nPos] << 2) & 0x3f;
			if(++nPos < nLength)
				cCode |= (sString[nPos] >> 6) & 0x03;
			
			sResult.append(1, sBase64Table[cCode]);
		} else {
			++nPos;
			sResult.append(1, cFillChar);
		}
		
		if(nPos < nLength) {
			cCode = sString[nPos] & 0x3f;
			sResult.append(1, sBase64Table[cCode]);
		} else {
			sResult.append(1, cFillChar);
		}
	}
	return sResult;
}

CMyDocument::Serialize(CArchive &ar)
{
  	if (ar.IsStoring())
	{
		//other variables serialized here
	}
	else
	{
		//other variables serialized here
	}
	//any way to serialize m_vec here?
}