private static object FuncFilter(object[] args)
{
if (!_mnr.CheckArgCount(2, "filter", args))
{
return(null);
}
object list = args[0];
string property;
property = args[1].ToString();
if (!(list is IEnumerable))
{
throw new VoltException("argument 1 of filter has to be IEnumerable", 0, 0);
}
IEnumerator ienum = ((IEnumerable)list).GetEnumerator();
List <object> newList = new List <object>();
while (ienum.MoveNext())
{
object val = VoltEngine.ProcessProperty(ienum.Current, property);
if (val is bool && (bool)val)
{
newList.Add(ienum.Current);
}
}
return(newList);
}
public string Evaluate(string expression)
{
VoltEngine Volt = VoltEngine.Parser("${" + expression + "}");
StringWriter writer = new StringWriter();
Volt.Process(writer);
return(writer.ToString());
}
private static object FuncJoin(object[] args)
{
if (!_mnr.CheckArgCount(2, 3, "join", args))
{
return(null);
}
object list = args[0];
string property;
string delim;
if (args.Length == 3)
{
property = args[1].ToString();
delim = args[2].ToString();
}
else
{
property = string.Empty;
delim = args[1].ToString();
}
if (!(list is IEnumerable))
{
throw new VoltException("argument 1 of join has to be IEnumerable", 0, 0);
}
IEnumerator ienum = ((IEnumerable)list).GetEnumerator();
StringBuilder sb = new StringBuilder();
int index = 0;
while (ienum.MoveNext())
{
if (index > 0)
{
sb.Append(delim);
}
if (args.Length == 2) // do not evalulate property
{
sb.Append(ienum.Current);
}
else
{
sb.Append(VoltEngine.ProcessProperty(ienum.Current, property));
}
index++;
}
return(sb.ToString());
}
public static void Register(VoltEngine mn, Templates _tpl)
{
_mnr = mn;
_Templates = _tpl;
_mnr.RegisterFunction("contains", FuncContains);
_mnr.RegisterFunction("isnullorempty", FuncIsNullOrEmpty);
_mnr.RegisterFunction("isnotempty", FuncIsNotEmpty);
_mnr.RegisterFunction("isnumber", FuncIsNumber);
_mnr.RegisterFunction("toupper", FuncToUpper);
_mnr.RegisterFunction("tolower", FuncToLower);
_mnr.RegisterFunction("isdefined", FuncIsDefined);
_mnr.RegisterFunction("ifvariable", FuncIfVariable);
_mnr.RegisterFunction("ifdefined", FuncIfDefined);
_mnr.RegisterFunction("len", FuncLen);
_mnr.RegisterFunction("join", FuncJoin);
_mnr.RegisterFunction("split", FuncSplit);
_mnr.RegisterFunction("listcontains", FuncListContains);
_mnr.RegisterFunction("isnull", FuncIsNull);
_mnr.RegisterFunction("not", FuncNot);
_mnr.RegisterFunction("iif", FuncIif);
_mnr.RegisterFunction("format", FuncFormat);
_mnr.RegisterFunction("trim", FuncTrim);
_mnr.RegisterFunction("filter", FuncFilter);
_mnr.RegisterFunction("replace", FuncReplace);
_mnr.RegisterFunction("sweep", FuncSweep);
_mnr.RegisterFunction("replacewith", FuncReplaceWith);
_mnr.RegisterFunction("round", FuncRound);
_mnr.RegisterFunction("typeof", FuncTypeOf);
_mnr.RegisterFunction("cint", FuncCInt);
_mnr.RegisterFunction("cdouble", FuncCDouble);
_mnr.RegisterFunction("cdate", FuncCDate);
_mnr.RegisterFunction("now", FuncNow);
_mnr.RegisterFunction("typeref", FuncTypeRef);
_mnr.RegisterFunction("templates", FuncTemplates);
_mnr.RegisterFunction("regions", FuncRegions);
_mnr.RegisterFunction("todict", FuncToDict);
#if CSHARP30
_mnr.RegisterFunction("query", FuncQuery);
#endif
_mnr.RegisterFunction("readfile", FuncReadFile);
_mnr.RegisterFunction("writefile", FuncWriteFile);
_mnr.RegisterFunction("write", FuncWrite);
_mnr.RegisterFunction("writeline", FuncWriteLine);
}
public static VoltEngine Parser(string tmpl)
{
return(VoltEngine.Parser("", tmpl));
}
