private void BuildTable(string val)
{
// check we have what we need. did i check for this already?!
///////////////////////////////////////////////////////////////////
string[] cis = new string[] { "XTENSION", "BITPIX", "NAXIS", "NAXIS1", "NAXIS2", "PCOUNT", "GCOUNT" };
for (int i = 0; i < cis.Length; i++)
{
Utils.CheckBool(_cardImages[i].Key.Equals(cis[i]), "Table extenstion doesn't have the requirted cardimages");
}
// we are fine, continue...
///////////////////////////////////////////////////////////////////
long numBytesPerRow = long.Parse(_cardImages[3].Value); // same for both ASCII and Binary table
long numRows = long.Parse(_cardImages[4].Value); // same for both ASCII and Binary table
int numFields = int.Parse(val); // number of columns
_paramsLength = uint.Parse(_cardImages[5].Value); // Non zero for binary tables only
uint numGroups = uint.Parse(_cardImages[6].Value); // must be one for binary table
Utils.CheckBool(numGroups == 1, "GCOUNT of Binary Table must be 1");
// now we're ready for table creation
///////////////////////////////////////////////////////////////////
TableType t = (_type == HDUType.ASCIITable) ? TableType.ASCII : TableType.Binary;
_table = new HDUTable(this, t, numRows, numFields, numBytesPerRow);
if (_paramsLength > 0)
{
_heap = new byte[_paramsLength];
}
}
internal TableCellASCII(TableRow row, FieldInfoBase fi)
: base(row, fi)
{
HDUTable table = row.Header.Table as HDUTable;
_offset = table.BytesPerRow * row.Index + fi.Offset - 1; // -1 as FITS TBCOLn starts from 1 not from zero
}
internal RowEnumerator(HDUTable table)
{
_table = table;
_cursor = -1;
_numRows = table.Length;
_currentRow = null;
}
internal TableCellBinary(TableRow row, FieldInfoBase fi)
: base(row, fi)
{
HDUTable table = row.Header.Table as HDUTable;
_offset = table.BytesPerRow * row.Index + fi.Offset;
}
internal TableHeader(HDUTable table, int numFields)
{
_table = table;
_numFields = numFields;
_fieldNameIndexMap = new Dictionary <string, int>(numFields);
_fieldsInfo = new List <FieldInfoBase>(numFields);
for (int i = 0; i < numFields; i++)
{
switch (table.Type)
{
case TableType.ASCII:
_fieldsInfo.Add(new FieldInfoA(this, i));
break;
case TableType.Binary:
_fieldsInfo.Add(new FieldInfoB(this, i));
break;
default:
throw new Exception("Invalid table type encountered");
}
}
}