Semi-cursed macro that serves embedded files as warp filters.

lib.rs

macro_rules! include_file_as_resp {
    ($file:expr) => {{
        use headers::HeaderMapExt;
        let body = include_bytes!($file).as_slice();
        let mut resp = warp::reply::Response::new(body.into());
        let mime = mime_guess::from_path($file).first_or_octet_stream();
        resp.headers_mut().typed_insert(headers::ContentLength(body.len() as u64));
        resp.headers_mut().typed_insert(headers::ContentType::from(mime));
        resp.headers_mut().typed_insert(headers::AcceptRanges::bytes());
        resp
    }}
}

macro_rules! include_file_as_filter {
    ($route:literal -> $file:expr) => {{
        use warp::Filter;
        if $route != "" {
            warp::path($route).and(warp::path::end()).boxed()
        } else {
            warp::path::end().boxed()
        }.map(|| include_file_as_resp!($file))
    }}
}

macro_rules! include_files_as_filter {
    ($fr:literal -> $ff:expr, $($r:literal -> $f:expr),* $(,)?) => {{
        use warp::Filter;
        let routes = include_file_as_filter!($fr -> $ff);
        $(let routes = routes.or(include_file_as_filter!($r -> $f));)*
        warp::get().and(routes)
    }}
}