WEwebstrand·Jun 17, 2024
Check out https://github.com/logological/gpp it's what I use when I feel like I need a preprocessor. It's more flexible in syntax and operation than cpp.
I've used it in the past for wrangling the definitions of a multitude of SQL triggers I was using to generate a real-time materialized view. The fact that you can modify its syntax is very helpful for making it work with non-C syntaxes (like SQL or even LaTeX).
It even has an HTML mode built-in, which you can customize to your needs, but looks like:
<#define x|y>
<#macro arg|...>
which works better for certain WYSIWYG editors. You could modify the syntax to be
<!--#define x y-->
<!--#macro(arg, ...)-->
In Using the C preprocessor as an HTML templating engine