/// <summary>
/// Renders the input stream 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="instream">input stream containing the VTL to be rendered
/// </param>
/// <returns>true if successful, false otherwise. If false, see
/// Velocity runtime log
/// </returns>
/// <deprecated>Use
/// {@link #evaluate( Context context, Writer writer,
/// String logTag, Reader reader ) }
/// </deprecated>
public virtual bool Evaluate(IContext context, TextWriter writer, System.String logTag, Stream instream)
{
/*
* first, parse - convert ParseException if thrown
*/
TextReader br = null;
System.String encoding = null;
try {
encoding = ri.getString(RuntimeConstants_Fields.INPUT_ENCODING, RuntimeConstants_Fields.ENCODING_DEFAULT);
br = new StreamReader(new StreamReader(instream, System.Text.Encoding.GetEncoding(encoding)).BaseStream);
} catch (IOException uce) {
System.String msg = "Unsupported input encoding : " + encoding + " for template " + logTag;
throw new ParseErrorException(msg);
}
return(Evaluate(context, writer, logTag, br));
}