public virtual IReturnVector executeFunction(Rete engine, IParameter[] params_Renamed)
{
bool sp = true;
if (params_Renamed != null && params_Renamed.Length >= 2)
{
String val = params_Renamed[0].StringValue;
if (val.Equals("off"))
{
// turn off spooling
String name = params_Renamed[1].StringValue;
TextWriter writer = engine.removePrintWriter(name);
if (writer != null)
{
writer.Flush();
writer.Close();
}
}
else
{
// turn on spooling
// we expected a file name
String spname = params_Renamed[0].StringValue;
String fname = params_Renamed[1].StringValue;
try
{
FileInfo nfile = new FileInfo(fname);
nfile.Create();
FileStream fos = new FileStream(nfile.FullName, FileMode.Create);
StreamWriter writer = new StreamWriter(fos);
engine.addPrintWriter(spname, writer);
}
catch (FileNotFoundException e)
{
// we should report it
sp = false;
}
catch (IOException e)
{
sp = false;
}
}
}
else
{
sp = false;
}
DefaultReturnVector ret = new DefaultReturnVector();
DefaultReturnValue rv = new DefaultReturnValue(Constants.BOOLEAN_OBJECT, sp);
ret.addReturnValue(rv);
return ret;
}