public override void Invoke(SpoolSpace Memory)
{
Table Destination = this._Parameters[0].Select(Memory);
string Source = this._Parameters[1].Evaluate(Memory).valueCSTRING;
char[] Delims = this._Parameters[2].Evaluate(Memory).valueCSTRING.ToCharArray();
char Escape = (this._Parameters.Count >= 4 ? this._Parameters[3].Evaluate(Memory).valueCSTRING.First() : char.MaxValue);
int Skips = (this._Parameters.Count == 5 ? this._Parameters[4].Evaluate(Memory).valueINT : 0);
using (StreamReader Reader = new StreamReader(Source))
{
int i = 0;
while (i < Skips && !Reader.EndOfStream)
{
i++;
Reader.ReadLine();
}
using (RecordWriter Writer = Destination.OpenWriter())
{
while (!Reader.EndOfStream)
{
Record r = Util.StringUtil.ToRecord(Reader.ReadLine(), Destination.Columns, Delims, Escape);
Writer.Insert(r);
}
}
}
}
public virtual void WriteTo(SpoolSpace Memory, RecordWriter Writer)
{
Cell val = this.Evaluate(Memory);
if (val.Affinity == CellAffinity.TREF)
{
Table t = this._Host.OpenTable(val.valueTREF);
using (RecordReader rr = t.OpenReader())
{
while (rr.CanAdvance)
{
Writer.Insert(rr.ReadNext());
}
}
}
}
public override void EndInvoke(SpoolSpace Memory)
{
// Open the base stream
using (RecordWriter writer = this._Output.OpenWriter())
{
// Open a reader //
using (RecordReader reader = this._StorageTree.OpenReader())
{
while (reader.CanAdvance)
{
Record work = reader.ReadNext();
Record finale = this._Parameters.AggRender(work);
writer.Insert(finale);
} // end while
} // end reader using
} // end using writer
// Drop the tree
this._Host.TableStore.DropTable(this._StorageTree.Key);
}