code.octet-stream.net Git - netwatcher/blob - src/util.rs

   1 use crate::Error;
   2 use std::fmt::Write;
   3
   4 pub(crate) fn format_mac(bytes: &[u8]) -> Result<String, Error> {
   5     let mut mac = String::with_capacity(bytes.len() * 3);
   6     for i in 0..bytes.len() {
   7         if i != 0 {
   8             write!(mac, ":").map_err(|_| Error::Internal)?;
   9         }
  10         write!(mac, "{:02X}", bytes[i]).map_err(|_| Error::Internal)?;
  11     }
  12     Ok(mac)
  13 }