/// <summary>
/// Read an include directive, and the contents of the target file
/// </summary>
/// <param name="Element">Xml element to read the definition from</param>
/// <param name="BaseDir">Base directory to resolve relative include paths from </param>
void ReadInclude(ScriptElement Element, DirectoryReference BaseDir)
{
if (EvaluateCondition(Element))
{
FileReference Script = FileReference.Combine(BaseDir, Element.GetAttribute("Script"));
if (Script.Exists())
{
TryRead(Script);
}
else
{
LogError(Element, "Cannot find included script '{0}'", Script.FullName);
}
}
}
/// <summary>
/// Evaluates the (optional) conditional expression on a given XML element via the If="..." attribute, and returns true if the element is enabled.
/// </summary>
/// <param name="Element">The element to check</param>
/// <returns>True if the element's condition evaluates to true (or doesn't have a conditional expression), false otherwise</returns>
bool EvaluateCondition(ScriptElement Element)
{
// Check if the element has a conditional attribute
const string AttributeName = "If";
if (!Element.HasAttribute(AttributeName))
{
return(true);
}
// If it does, try to evaluate it.
try
{
string Text = ExpandProperties(Element.GetAttribute("If"));
return(Condition.Evaluate(Text));
}
catch (ConditionException Ex)
{
LogError(Element, "Error in condition: {0}", Ex.Message);
return(false);
}
}
/// <summary>
/// Expands any properties and reads an attribute.
/// </summary>
/// <param name="Element">Element to read the attribute from</param>
/// <param name="Name">Name of the attribute</param>
/// <returns>Array of names, with all leading and trailing whitespace removed</returns>
string ReadAttribute(ScriptElement Element, string Name)
{
return(ExpandProperties(Element.GetAttribute(Name)));
}