Variable substitution in XML DOM tree #100
Description
In Blackbear we need to be able to specify parameters in the MOSOE input file (this is required for using the stochastic methods module to launch many simulations). We currently use a hack, where a {variable} string in the XML code is replaced through string operation in a preprocessing step.
The XML spec has the concept of "entities" (&VARIABLE;) which unfortunately is not supported by the rapidxml library, so we need to stick with find/replace for now.
However, I'd like to perform that find/replace on individual attributes in the DOM tree. This would permit better error checking.
Right now, in Blackbear we cannot do proper error checking for missing or unused substitutions, because we cannot limit the find/replace to only the model subblock that is actually used.