Base64 Namespace Reference

Functions
STRINGS_API wxString	Encode (const void *in, int len)
STRINGS_API int	Decode (const wxString &in, void *out)

Function Documentation

Decode()

int Base64::Decode	(	const wxString &	in,
		void *	out
	)

Definition at line 67 of file Base64.cpp.

{
   const auto len = in.length();
   auto p = static_cast<unsigned char*>(out);
 
   if (len % 4)  //Sanity check
   {
      return 0;
   }
 
   //const char *a = in.mb_str();
   //Setup a vector to hold the result
   unsigned long temp = 0; //Holds decoded quanta
   size_t i = 0;
   while (i < len)
   {
      for (int quantumPosition = 0; quantumPosition < 4; quantumPosition++)
      {
         unsigned char c = in[i];
         temp <<= 6;
 
         if (c >= 0x41 && c <= 0x5A)
         {
            temp |= c - 0x41;
         }
         else if (c >= 0x61 && c <= 0x7A)
         {
            temp |= c - 0x47;
         }
         else if (c >= 0x30 && c <= 0x39)
         {
            temp |= c + 0x04;
         }
         else if (c == 0x2B)
         {
            temp |= 0x3E;
         }
         else if (c == 0x2F)
         {
            temp |= 0x3F;
         }
         else if (c == padc)
         {
            switch (len - i)
            {
               case 1: //One pad character
                  *p++ = (temp >> 16) & 0x000000FF;
                  *p++ = (temp >> 8) & 0x000000FF;
                  return p - static_cast<unsigned char*>(out);
               case 2: //Two pad characters
                  *p++ = (temp >> 10) & 0x000000FF;
                  return p - static_cast<unsigned char*>(out);
            }
         }
         i++;
      }
      *p++ = (temp >> 16) & 0x000000FF;
      *p++ = (temp >> 8) & 0x000000FF;
      *p++ = temp & 0x000000FF;
   }
 
   return p - static_cast<unsigned char*>(out);
}

References padc.

Referenced by PluginManager::ConvertID(), PresetsBufferStream::fromString(), VSTWrapper::HandleXMLEndTag(), and VSTEffectBase::LoadUserPreset().

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Encode()

wxString Base64::Encode	(	const void *	in,
		int	len
	)

Definition at line 27 of file Base64.cpp.

{
   auto p = static_cast<const unsigned char*>(in);
   wxString out;
 
   unsigned long temp;
   for (int i = 0; i < len / 3; i++)
   {
      temp  = (*p++) << 16; //Convert to big endian
      temp += (*p++) << 8;
      temp += (*p++);
      out += cset[(temp & 0x00FC0000) >> 18];
      out += cset[(temp & 0x0003F000) >> 12];
      out += cset[(temp & 0x00000FC0) >> 6];
      out += cset[(temp & 0x0000003F)];
   }
 
   switch (len % 3)
   {
      case 1:
         temp  = (*p++) << 16; //Convert to big endian
         out += cset[(temp & 0x00FC0000) >> 18];
         out += cset[(temp & 0x0003F000) >> 12];
         out += padc;
         out += padc;
      break;
 
      case 2:
         temp  = (*p++) << 16; //Convert to big endian
         temp += (*p++) << 8;
         out += cset[(temp & 0x00FC0000) >> 18];
         out += cset[(temp & 0x0003F000) >> 12];
         out += cset[(temp & 0x00000FC0) >> 6];
         out += padc;
      break;
   }
 
   return out;
}

References cset, and padc.

Referenced by PluginManager::ConvertID(), VSTEffectBase::SaveUserPreset(), VSTWrapper::SaveXML(), and PresetsBufferStream::toString().

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