fn read_pid_io_from_path>()

in below/procfs/src/lib.rs [592:616]

• 22 lines of code
• 4 McCabe index (conditional complexity)

    fn read_pid_io_from_path<P: AsRef<Path>>(path: P) -> Result<PidIo> {
        let path = path.as_ref().join("io");
        let file = File::open(&path).map_err(|e| Error::IoError(path.clone(), e))?;
        let buf_reader = BufReader::new(file);
        let mut pidio: PidIo = Default::default();

        for line in buf_reader.lines() {
            let line = line.map_err(|e| Error::IoError(path.clone(), e))?;

            let mut items = line.split_whitespace();
            if let Some(item) = items.next() {
                match item {
                    "read_bytes:" => pidio.rbytes = parse_item!(path, items.next(), u64, line)?,
                    "write_bytes:" => pidio.wbytes = parse_item!(path, items.next(), u64, line)?,
                    _ => {}
                }
            }
        }

        if pidio == Default::default() {
            Err(Error::InvalidFileFormat(path))
        } else {
            Ok(pidio)
        }
    }