/// <summary>
/// Invokes a currently registered Velocimacro with the parameters provided
/// and places the rendered stream into the writer.
///
/// Note : currently only accepts args to the VM if they are in the context.
/// </summary>
/// <param name="vmName">name of Velocimacro to call</param>
/// <param name="logTag">string to be used for template name in case of error</param>
/// <param name="parameters">args used to invoke Velocimacro. In context key format :
/// eg "foo","bar" (rather than "$foo","$bar")
/// </param>
/// <param name="context">Context object containing data/objects used for rendering.</param>
/// <param name="writer"> Writer for output stream</param>
/// <returns>true if Velocimacro exists and successfully invoked, false otherwise.</returns>
public static bool InvokeVelocimacro(String vmName, String logTag, String[] parameters, IContext context,
TextWriter writer)
{
// check parameters
if (vmName == null || parameters == null || context == null || writer == null || logTag == null)
{
RuntimeSingleton.Error("Velocity.invokeVelocimacro() : invalid parameter");
return(false);
}
// does the VM exist?
if (!RuntimeSingleton.IsVelocimacro(vmName, logTag))
{
RuntimeSingleton.Error(string.Format("Velocity.invokeVelocimacro() : VM '{0}' not registered.", vmName));
return(false);
}
// now just create the VM call, and use evaluate
StringBuilder construct = new StringBuilder("#");
construct.Append(vmName);
construct.Append("(");
for (int i = 0; i < parameters.Length; i++)
{
construct.Append(" $");
construct.Append(parameters[i]);
}
construct.Append(" )");
try
{
bool retval = Evaluate(context, writer, logTag, construct.ToString());
return(retval);
}
catch (Exception e)
{
RuntimeSingleton.Error(string.Format("Velocity.invokeVelocimacro() : error {0}", e));
}
return(false);
}
public static bool InvokeVelocimacro(string vmName, string logTag, string[] parameters, IContext context, TextWriter writer)
{
bool result;
if (vmName == null || parameters == null || context == null || writer == null || logTag == null)
{
RuntimeSingleton.Error("Velocity.invokeVelocimacro() : invalid parameter");
result = false;
}
else if (!RuntimeSingleton.IsVelocimacro(vmName, logTag))
{
RuntimeSingleton.Error("Velocity.invokeVelocimacro() : VM '" + vmName + "' not registered.");
result = false;
}
else
{
StringBuilder stringBuilder = new StringBuilder("#");
stringBuilder.Append(vmName);
stringBuilder.Append("(");
for (int i = 0; i < parameters.Length; i++)
{
stringBuilder.Append(" $");
stringBuilder.Append(parameters[i]);
}
stringBuilder.Append(" )");
try
{
bool flag = Velocity.Evaluate(context, writer, logTag, stringBuilder.ToString());
result = flag;
return(result);
}
catch (System.Exception arg)
{
RuntimeSingleton.Error("Velocity.invokeVelocimacro() : error " + arg);
}
result = false;
}
return(result);
}
