gistfile1.cpp

std::string LLVivoxVoiceClient::nameFromID(const LLUUID &uuid)
{
        std::string result;
        
        if (uuid.isNull()) {
                //VIVOX, the uuid emtpy look for the mURIString and return that instead.
                //result.assign(uuid.mURIStringName);
                LLStringUtil::replaceChar(result, '_', ' ');
                return result;
        }
        // Prepending this apparently prevents conflicts with reserved names inside the vivox code.
        result = "x";
        
        // Base64 encode and replace the pieces of base64 that are less compatible 
        // with e-mail local-parts.
        // See RFC-4648 "Base 64 Encoding with URL and Filename Safe Alphabet"
        result += LLBase64::encode(uuid.mData, UUID_BYTES);
        LLStringUtil::replaceChar(result, '+', '-');
        LLStringUtil::replaceChar(result, '/', '_');
        
        // If you need to transform a GUID to this form on the Mac OS X command line, this will do so:
        // echo -n x && (echo e669132a-6c43-4ee1-a78d-6c82fff59f32 |xxd -r -p |openssl base64|tr '/+' '_-')
        
        // The reverse transform can be done with:
        // echo 'x5mkTKmxDTuGnjWyC__WfMg==' |cut -b 2- -|tr '_-' '/+' |openssl base64 -d|xxd -p
        
        return result;
}