void Init()
{
this._functions = new Dictionary<string, TemplateFunction>(StringComparer.InvariantCultureIgnoreCase);
this._variables = new VariableScope();
_functions.Add("equals", new TemplateFunction(FuncEquals));
_functions.Add("notequals", new TemplateFunction(FuncNotEquals));
_functions.Add("iseven", new TemplateFunction(FuncIsEven));
_functions.Add("isodd", new TemplateFunction(FuncIsOdd));
_functions.Add("isempty", new TemplateFunction(FuncIsEmpty));
_functions.Add("isnotempty", new TemplateFunction(FuncIsNotEmpty));
_functions.Add("isnumber", new TemplateFunction(FuncIsNumber));
_functions.Add("toupper", new TemplateFunction(FuncToUpper));
_functions.Add("tolower", new TemplateFunction(FuncToLower));
_functions.Add("isdefined", new TemplateFunction(FuncIsDefined));
_functions.Add("ifdefined", new TemplateFunction(FuncIfDefined));
_functions.Add("len", new TemplateFunction(FuncLen));
_functions.Add("tolist", new TemplateFunction(FuncToList));
_functions.Add("isnull", new TemplateFunction(FuncIsNull));
_functions.Add("not", new TemplateFunction(FuncNot));
_functions.Add("iif", new TemplateFunction(FuncIif));
_functions.Add("format", new TemplateFunction(FuncFormat));
_functions.Add("trim", new TemplateFunction(FuncTrim));
_functions.Add("filter", new TemplateFunction(FuncFilter));
_functions.Add("gt", new TemplateFunction(FuncGt));
_functions.Add("lt", new TemplateFunction(FuncLt));
_functions.Add("compare", new TemplateFunction(FuncCompare));
_functions.Add("or", new TemplateFunction(FuncOr));
_functions.Add("and", new TemplateFunction(FuncAnd));
_functions.Add("comparenocase", new TemplateFunction(FuncCompareNoCase));
_functions.Add("stripnewlines", new TemplateFunction(FuncStripNewLines));
}
public VariableScope(VariableScope parent)
{
this.parent = parent;
this.values = new Dictionary<string, object>(StringComparer.InvariantCultureIgnoreCase);
}
protected void ProcessTemplate(string name, Tag tag)
{
Template useTemplate = _currentTemplate.FindTemplate(name);
if (useTemplate == null)
{
string msg = string.Format("Template '{0}' not found", name);
WriteError(msg, tag.Line, tag.Col);
return;
}
// process inner elements and save content
TextWriter saveWriter = _writer;
_writer = new StringWriter();
string content = string.Empty;
try
{
ProcessElements(tag.InnerElements);
content = _writer.ToString();
}
catch
{
return; // on error, do not do tag inclusion
}
finally
{
_writer = saveWriter;
}
Template saveTemplate = _currentTemplate;
_variables = new VariableScope(_variables);
_variables["innerText"] = content;
try
{
foreach (TagAttribute attrib in tag.Attributes)
{
object val = EvalExpression(attrib.Expression);
_variables[attrib.Name] = val;
}
_currentTemplate = useTemplate;
ProcessElements(_currentTemplate.Elements);
}
finally
{
_variables = _variables.Parent;
_currentTemplate = saveTemplate;
}
}