public MetaStockTable FilterPeriod(DateTime Start, DateTime End)
{
MetaStockTable M = new MetaStockTable();
for (int t = 0; t < this.Count; t++)
{
if (this[t].Day >= Start && this[t].Day <= End)
{
M.Add(this[t]);
}
}
return(M);
}
public MetaStockTable ReadSymbol(string simbolo)
{
if (StockCache.ContainsKey(simbolo))
{
return(StockCache[simbolo]);
}
// trova il simbolo
foreach (CatalogEntry CE in MainDir)
{
if (CE.symbol.Trim() == simbolo)
{
MetaStockTable tab = new MetaStockTable();
tab.Symbol = CE.symbol;
FileStream F = new FileStream(CE.filename, FileMode.Open, FileAccess.Read);
BinaryReader BR = new BinaryReader(F);
UInt16 max_recs = BR.ReadUInt16(); // 0 ==> unlimited size
UInt16 last_rec = BR.ReadUInt16(); // dathdr7 = 1; ctdata7 starts with 2
if (CE.numfields == 5)
{
BR.ReadBytes(16); // zeroes
}
else if (CE.numfields == 6)
{
BR.ReadBytes(20); // zeroes
}
else if (CE.numfields == 7)
{
BR.ReadBytes(24); // zeroes
}
// mega toppa, talvolta il file inizia con 20 zeri invece di 24!
// if(bbb[23]!=0) F.Seek(-4, SeekOrigin.Current);
for (int t = 1; t < last_rec; t++)
{
MetaStockRow data = new MetaStockRow();
data.Day = DateFromSingle(ConvertMbf4ToFloat(BR.ReadBytes(4)));
data.Open = ConvertMbf4ToFloat(BR.ReadBytes(4));
data.High = ConvertMbf4ToFloat(BR.ReadBytes(4));
data.Low = ConvertMbf4ToFloat(BR.ReadBytes(4));
data.Close = ConvertMbf4ToFloat(BR.ReadBytes(4));
if (CE.numfields > 5)
{
data.Volume = ConvertMbf4ToFloat(BR.ReadBytes(4));
}
if (CE.numfields > 6)
{
data.OpenInterest = ConvertMbf4ToFloat(BR.ReadBytes(4));
}
tab.Add(data);
}
BR.Close();
F.Close();
StockCache.Add(simbolo, tab);
return(tab);
}
}
throw new Exception("Symbol " + simbolo + " not found");
}
