fn setup_include_paths()

in aws-lc-fips-sys/builder/main.rs [586:620]

• 28 lines of code
• 5 McCabe index (conditional complexity)

fn setup_include_paths(out_dir: &Path, manifest_dir: &Path) -> PathBuf {
    let mut include_paths = vec![
        get_rust_include_path(manifest_dir),
        get_generated_include_path(manifest_dir),
        get_aws_lc_include_path(manifest_dir),
    ];

    if let Some(extra_paths) = get_aws_lc_fips_sys_includes_path() {
        include_paths.extend(extra_paths);
    }

    let include_dir = out_dir.join("include");
    std::fs::create_dir_all(&include_dir).unwrap();

    // iterate over all the include paths and copy them into the final output
    for path in include_paths {
        for child in std::fs::read_dir(path).into_iter().flatten().flatten() {
            if child.file_type().map_or(false, |t| t.is_file()) {
                let _ = std::fs::copy(
                    child.path(),
                    include_dir.join(child.path().file_name().unwrap()),
                );
                continue;
            }

            // prefer the earliest paths
            let options = fs_extra::dir::CopyOptions::new()
                .skip_exist(true)
                .copy_inside(true);
            let _ = fs_extra::dir::copy(child.path(), &include_dir, &options);
        }
    }

    include_dir
}