public ContractInfomation ContractOf(string fileName)
{
int index = fileName.LastIndexOf('\\');
fileName = fileName.Substring(index + 1);
if (!fileName.StartsWith(Symbol))
{
throw new Exception("Unexpected filename: " + fileName);
}
if (fileName.EndsWith("da1"))
{
if (fileName.Contains('.'))
{
fileName = fileName.Substring(0, fileName.IndexOf('.'));
}
char code = fileName[fileName.Length - 1];
int month, year = DateTimeOffset.Now.Year;
month = MonthCodes.MonthOf(code);
return(new ContractInfomation(this, year, month));
}
else
{
if (fileName.Contains('.'))
{
fileName = fileName.Substring(0, fileName.IndexOf('.'));
}
char code = fileName[fileName.Length - 1];
if (!MonthCodeString.Contains(code))
{
//throw new Exception(string.Format("The commodity contains no contract for month of {0}({1})", code, MonthCodes.MonthCodeOf(code).Name));
MonthCodeString = string.Format("{0}{1}", code, MonthCodeString);
Months.Add(MonthCodes.MonthCodeOf(code));
Months.Sort();
}
int month, year;
month = MonthCodes.MonthOf(code);
string yearString = fileName.Substring(Symbol.Length, fileName.Length - Symbol.Length - 1);
if (int.TryParse(yearString, out year))
{
return(new ContractInfomation(this, year > 30 ? 1900 + year : 2000 + year, month));
}
else
{
throw new Exception("Failed to parse year from " + yearString);
}
}
}
public bool HasContractOn(int month)
{
if (month < 1 || month > 12)
{
return(false);
}
char symbol = MonthCodes.MonthCodeOf(month).Symbol;
return(MonthCodeString.Contains(symbol));
}
