wrapgen

wrapgen is a tool to automatically generate Rust wrappers around C functions called via FFI. It will wrap pointer returns in an Option and int returns in a Result. As of now, wrapgen only works if your functions adhere to the C convention of returning 0 on a successful run and another value otherwise.

How to use wrapgen

You can use wrapgen as a standalone binary:

wrapgen input.rs output.rs

where input.rs contains one function declaration per line

or include it in your build.rs file:

fn main() {
    WrapGen::new("input1.rs")
        .add_file("input2.rs")
        .function("fn my_test_fn(arg1: cty::c_int) -> cty::c_int")
        .prefix("rs_")
        .use_core(false)
        .generate("output.rs");
}