C code generation from XML template

I have heard of a design paradigm where we use XML language to define a generic MODEL for the data structures and then use a code generator to create the code in the respective programming languages (I am interested in C). This helps in writing generic interfaces to the program and provide interfaces to the logic written in various languages.

This sounds more like CORBA where IDL file is used.

Since I don't want to use heavy weight like CORBA is there a simple example or ope source application which achieves the same behavior and generates code in C ?

Thanks in advance for your comments and suggestions.