(Readding the list cc:)
On Tue, Jan 29, 2013 at 4:32 PM, David Granados <[email protected]> wrote:
> Does not work :-(
>
> Size of proto before: 196, size of proto after gzip: 196
What measures this? Nothing in any code you quoted.
> Now my code are:
> 206 template <class T> int
> 207 Proto<T>::CompressProtoToString(std::string& pOut,T pProto)
You never touch pOut.
> 208 {
> 209 // Resultado
> 210 int l_resultado = -1;
> 211
>
> 212 // Definimos el buffer al cual vamos a comprimir
> 213 const unsigned bufLength = 256;
> 214 unsigned char buffer[bufLength];
> 215
> 216 memset(buffer,0,256);
> 217
> 218
> 219 std::cout << buffer << std::endl;
> 220
> 221 // Obtenemos un array del proto serializado
> 222 ZeroCopyOutputStream* output = new
> google::protobuf::io::ArrayOutputStream(buffer,bufLength);
> 223 // Introducimos las opciones de compression
> 224 GzipOutputStream::Options options;
> 225 options.format = GzipOutputStream::GZIP;
> 226 options.compression_level = NIVEL_COMPRESION;
What is the value of NIVEL_COMPRESION?
> 227
> 228 google::protobuf::io::GzipOutputStream
> gzip_stream(output,options);
> 229 if (!pProto.SerializeToZeroCopyStream(&gzip_stream))
> 230 {
> 231 std::cerr << "Error comprimiendo el proto a string." <<
> std::endl;
> 232 }
> 233 gzip_stream.Close();
> 234 std::cout << ":" << buffer << std::endl;
This will fail if any 0-bytes happen to get serialized (you're
treating buffer as a nul-terminated C-style string)
> 235
> 236 // Devolvemos el resultado
> 237 return l_resultado;
> 238 }
>
I suggest that you post a *complete*, compilable, testcase - it's just
too hard to diagnose what's going wrong by guessing what you are doing
in the surrounding code that you didn't provide.
Oliver
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