Base64 Unicode version of encoding / decoding

Question

I am using base64 encoding / decoding from http://www.adp-gmbh.ch/cpp/common/base64.html

This works well with the following code.

const std::string s = "I Am A Big Fat Cat" ; std::string encoded = base64_encode(reinterpret_cast<const unsigned char*>(s.c_str()), s.length()); std::string decoded = base64_decode(encoded); std::cout << _T("encoded: ") << encoded << std::endl; std::cout << _T("decoded: ") << decoded << std::endl; 

However, when it comes to unicode

 namespace std { #ifdef _UNICODE typedef wstring tstring; #else typedef string tstring; #endif } const std::tstring s = _T("I Am A Big Fat Cat"); 

How can I use the above function?

Simple change

 std::string base64_encode(unsigned TCHAR const* , unsigned int len); std::tstring base64_decode(std::string const& s); 

will not work correctly.

(I expect base64_encode to return ASCII. Therefore, std :: string should be used instead of std :: tstring)

Answer 1

Base64 encodes binary data as text. So you just need to convert your wide characters to their corresponding bytes using wcstombs and co , and you're good to go.