/// <summary>
/// Renders the input reader using the context into the output writer.
/// To be used when a template is dynamically constructed, or want to
/// use Velocity as a token replacer.
/// </summary>
/// <param name="context">context to use in rendering input string</param>
/// <param name="out"> Writer in which to render the output</param>
/// <param name="logTag"> string to be used as the template name for log messages in case of error</param>
/// <param name="reader">Reader containing the VTL to be rendered</param>
/// <returns>true if successful, false otherwise. If false, see Velocity runtime log</returns>
public static bool Evaluate(IContext context, TextWriter writer, String logTag, TextReader reader)
{
SimpleNode nodeTree = null;
try
{
nodeTree = RuntimeSingleton.parse(reader, logTag);
}
catch (ParseException pex)
{
throw new ParseErrorException(pex.Message);
}
/*
* now we want to init and render
*/
if (nodeTree != null)
{
InternalContextAdapterImpl ica = new InternalContextAdapterImpl(context);
ica.PushCurrentTemplateName(logTag);
try
{
try
{
nodeTree.init(ica, RuntimeSingleton.RuntimeServices);
}
catch (Exception e)
{
RuntimeSingleton.error("Velocity.evaluate() : init exception for tag = " + logTag + " : " + e);
}
/*
* now render, and let any exceptions fly
*/
nodeTree.render(ica, writer);
}
finally
{
ica.PopCurrentTemplateName();
}
return(true);
}
return(false);
}
/// <summary> Default constructor: sets up the Velocity
/// Runtime, creates the visitor for traversing
/// the node structure and then produces the
/// visual representation by the visitation.
/// </summary>
public TemplateNodeView(System.String template)
{
try {
RuntimeSingleton.init("velocity.properties");
System.IO.StreamReader isr = new InputStreamReader(new System.IO.FileStream(template, System.IO.FileMode.Open, System.IO.FileAccess.Read), RuntimeSingleton.getString(RuntimeSingleton.INPUT_ENCODING))
;
//UPGRADE_ISSUE: The equivalent of constructor 'java.io.BufferedReader.BufferedReader' is incompatible with the expected type in C#. 'ms-help://MS.VSCC/commoner/redir/redirect.htm?keyword="jlca1109"'
System.IO.StreamReader br = new System.IO.StreamReader(isr.BaseStream);
document = RuntimeSingleton.parse(br, template)
;
visitor = new NodeViewMode();
visitor.Context = null;
//UPGRADE_ISSUE: The equivalent of parameter java.lang.System.out is incompatible with the expected type in C#. 'ms-help://MS.VSCC/commoner/redir/redirect.htm?keyword="jlca1109"'
visitor.Writer = new System.IO.StreamWriter(System.Console.Out);
document.jjtAccept(visitor, null);
} catch (System.Exception e) {
System.Console.Out.WriteLine(e);
SupportClass.WriteStackTrace(e, Console.Error);
}
}
