280 OS_EXPORT std::wstring JavaCommonUtils::wbase64encode(const std::wstring& aData)

   281 {

   282     BIO* b64  = BIO_new(BIO_f_base64());

   283     if (NULL == b64)

   284     {

   285         return L"";

   286     }

   287     BIO_set_flags(b64, BIO_FLAGS_BASE64_NO_NL);

   288     BIO* bmem = BIO_new(BIO_s_mem());

   289 

   290     b64 = BIO_push(b64, bmem);

   291     BIO_write(b64, aData.c_str(), aData.length() * 2);

   292     BIO_flush(b64);

   293 

   294     BUF_MEM* bptr;

   295     BIO_get_mem_ptr(b64, &bptr);

   296 

   297     std::wstring result;

   298     // convert each char to wchar

   299     for (int i = 0; i < bptr->length; i++)

   300     {

   301         result.push_back((wchar_t)*(bptr->data + i));

   302     }

   303     BIO_free_all(b64);

   304 

   305     return result;

   306 }

   307