io.c

void sgf_read_bloc(OFILE* file, int nubloc) {
  int adr = file->first,
      nb_bloc, init, i;

  nb_bloc = ((file->length + BLOCK_SIZE - 1) / BLOCK_SIZE);

  if (nubloc < 0) panic ("Numéro de bloc <= 0");
  if (nubloc > nb_bloc) panic ("Numéro de block > nb de blocs");

  adr  = (file->memo != -1) ? file->memo : file->first;
  init = (file->imem != -1) ? file->imem : 0;

  for (i = init; i < nubloc; i++) adr = get_fat (adr);

  if (adr == FAT_EOF) {
    panic ("Fin de fichier");
  }
  file->memo = adr;
  file->imem = i;

  read_block (adr, &(file->buffer));
}