Convert Wstring To String Encoded In UTF-8


Answer :

The code below might help you :)



#include <codecvt>
#include <string>

// convert UTF-8 string to wstring
std::wstring utf8_to_wstring (const std::string& str)
{
    std::wstring_convert<std::codecvt_utf8<wchar_t>> myconv;
    return myconv.from_bytes(str);
}

// convert wstring to UTF-8 string
std::string wstring_to_utf8 (const std::wstring& str)
{
    std::wstring_convert<std::codecvt_utf8<wchar_t>> myconv;
    return myconv.to_bytes(str);
}


What's your platform? Note that Windows does not support UTF-8 locales so this may explain why you're failing.



To get this done in a platform dependent way you can use MultiByteToWideChar/WideCharToMultiByte on Windows and iconv on Linux. You may be able to use some boost magic to get this done in a platform independent way, but I haven't tried it myself so I can't add about this option.



You can use boost's utf_to_utf converter to get char format to store in std::string. 



std::string myresult = boost::locale::conv::utf_to_utf<char>(my_wstring);


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