private static LinkedList <Attribute> att_list(Stream fs)
{
LinkedList <Attribute> list = new LinkedList <Attribute>();
int attribute_tag = NetCDFTools.int4(fs); // should be 0xC
uint num_attrs = NetCDFTools.non_neg(fs);
if (attribute_tag == 0xC && num_attrs > 0)
{
for (int i = 0; i < num_attrs; i++)
{
string name = NetCDFTools.name(fs);
NC_TYPE type = (NC_TYPE)NetCDFTools.non_neg(fs);
uint nelems = NetCDFTools.non_neg(fs);
byte[][] valueArray = NetCDFTools.values(type, nelems, fs);
list.AddLast(new Attribute(name, type, valueArray));
}
}
return(list);
}
private void ReadHeader(Stream fs)
{
// magic
magic = ""; // should be "CDF"
magic += Convert.ToChar(fs.ReadByte());
magic += Convert.ToChar(fs.ReadByte());
magic += Convert.ToChar(fs.ReadByte());
version = fs.ReadByte(); // should be 1
// numrecs
uint num_recs = NetCDFTools.non_neg(fs);
if (num_recs == 0xFFFFFFFF)
{
// streaming
}
// dim_list
int dimension_tag = NetCDFTools.int4(fs); // should be 0xA
uint num_dims = NetCDFTools.non_neg(fs);
if (dimension_tag == 0xA && num_dims > 0)
{
for (int i = 0; i < num_dims; i++)
{
string name = NetCDFTools.name(fs);
int dim_length = NetCDFTools.int4(fs);
bool is_record = false;
if (dim_length == 0)
{
// if dim_length is 0, then this is the record dimension
is_record = true;
}
dim_list.AddLast(new Dimension(name, dim_length, is_record));
}
}
// gatt_list
gatt_list = att_list(fs);
// var_list
int variable_tag = NetCDFTools.int4(fs); // should be 0xB
uint num_vars = NetCDFTools.non_neg(fs);
if (variable_tag == 0xB && num_vars > 0)
{
for (int i = 0; i < num_vars; i++)
{
string name = NetCDFTools.name(fs);
uint nelems = NetCDFTools.non_neg(fs);
// dimid list
int[] dimid = new int[nelems];
for (int j = 0; j < nelems; j++)
{
dimid[j] = NetCDFTools.int4(fs);
}
// vatt_list
LinkedList <Attribute> vatt_list = att_list(fs);
NC_TYPE type = (NC_TYPE)NetCDFTools.non_neg(fs);
uint vsize = NetCDFTools.non_neg(fs);
uint begin = NetCDFTools.non_neg(fs);
var_list.AddLast(new Variable(name, dimid, vatt_list, type, vsize, begin));
}
}
}