fn write_inputs()

in src/compiler/c.rs [1240:1294]
46 lines of code
6 McCabe index (conditional complexity)

    fn write_inputs(self: Box<Self>, wtr: &mut dyn io::Write) -> Result<dist::PathTransformer> {
        let CInputsPackager {
            input_path,
            mut path_transformer,
            preprocessed_input,
            extra_dist_files,
            extra_hash_files,
        } = *self;

        let mut builder = tar::Builder::new(wtr);

        {
            let input_path = pkg::simplify_path(&input_path)?;
            let dist_input_path = path_transformer.as_dist(&input_path).with_context(|| {
                format!("unable to transform input path {}", input_path.display())
            })?;

            let mut file_header = pkg::make_tar_header(&input_path, &dist_input_path)?;
            file_header.set_size(preprocessed_input.len() as u64); // The metadata is from non-preprocessed
            file_header.set_cksum();
            builder.append(&file_header, preprocessed_input.as_slice())?;
        }

        for input_path in extra_hash_files.iter().chain(extra_dist_files.iter()) {
            let input_path = pkg::simplify_path(input_path)?;

            if !super::CAN_DIST_DYLIBS
                && input_path
                    .extension()
                    .is_some_and(|ext| ext == std::env::consts::DLL_EXTENSION)
            {
                bail!(
                    "Cannot distribute dylib input {} on this platform",
                    input_path.display()
                )
            }

            let dist_input_path = path_transformer.as_dist(&input_path).with_context(|| {
                format!("unable to transform input path {}", input_path.display())
            })?;

            let mut file = io::BufReader::new(fs::File::open(&input_path)?);
            let mut output = vec![];
            io::copy(&mut file, &mut output)?;

            let mut file_header = pkg::make_tar_header(&input_path, &dist_input_path)?;
            file_header.set_size(output.len() as u64);
            file_header.set_cksum();
            builder.append(&file_header, &*output)?;
        }

        // Finish archive
        let _ = builder.into_inner();
        Ok(path_transformer)
    }