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("length", new TemplateFunction(FuncLength));
functions.Add("tolist", new TemplateFunction(FuncToList));
functions.Add("isnull", new TemplateFunction(FuncIsNull));
functions.Add("gt", new TemplateFunction(FuncGt));
functions.Add("lt", new TemplateFunction(FuncLt));
functions.Add("not", new TemplateFunction(FuncNot));
functions.Add("div", new TemplateFunction(FuncDiv));//2012-03-15增加
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("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));
functions.Add("typeof", new TemplateFunction(FuncTypeOf));
functions.Add("cint", new TemplateFunction(FuncCInt));
functions.Add("cdouble", new TemplateFunction(FuncCDouble));
functions.Add("cdate", new TemplateFunction(FuncCDate));
functions.Add("cdatestring", new TemplateFunction(FuncCDateString));
functions.Add("floatstring", new TemplateFunction(FuncFloatString));
functions.Add("now", new TemplateFunction(FuncNow));
functions.Add("createtypereference", new TemplateFunction(FuncCreateTypeReference));
functions.Add("nohtml", new TemplateFunction(FuncNoHTML));
functions.Add("cutstring", new TemplateFunction(FuncCutString));
functions.Add("htmlencode", new TemplateFunction(FuncHTMLEncode));
functions.Add("htmldecode", new TemplateFunction(FuncHTMLDecode));
}
protected void ProcessTemplate(string name, Tag tag)
{
if (customTags != null && customTags.ContainsKey(name))
{
ExecuteCustomTag(tag);
return;
}
Template useTemplate = currentTemplate.FindTemplate(name);
if (useTemplate == null)
{
string msg = string.Format("Template '{0}' not found", name);
throw new TemplateRuntimeException(msg, tag.Line, tag.Col);
}
// process inner elements and save content
TextWriter saveWriter = writer;
writer = new StringWriter();
string content = string.Empty;
try
{
ProcessElements(tag.InnerElements);
content = writer.ToString();
}
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;
}
}
public VariableScope(VariableScope parent)
{
this.parent = parent;
this.values = new Dictionary<string, object>(StringComparer.InvariantCultureIgnoreCase);
}