static public void saveBlock(int id, xDataInput data, xDataOutput o)
{
if (data == null)
{
return;
}
int blockSize = 4 + data.size();
if (blockSize + o.size() < DATA_MAX)
{
o.writeInt(blockSize);
o.writeInt(id);
o.write(data.getBytes(), 0, data.size());
}
}
