For parsing, there's the excellent mpc, a parser combinator library in highly portable C. https://github.com/orangeduck/mpc https://github.com/orangeduck/mpc I

For parsing, there's the excellent mpc, a parser combinator library in highly portable C. https://github.com/orangeduck/mpc https://github.com/orangeduck/mpc I even managed to use it drop in for a RiscOS project once.