Make network device filtering a regex.

Work and home have different naming schemes.

src/widgets/network.rs

@@ -7,12 +7,12 @@ use std::{
 };
 
 use i3monkit::{Block, Widget, WidgetUpdate};
+use regex::Regex;
 
 use crate::spark;
 
 const NETWORK_PATH_PREFIX: &str = "/sys/class/net";
 const NETWORK_STAT_SUFFIX: &str = "statistics/dummy";
-const DEVICE_PREFIX: &str = "enp";
 
 struct TransferStat {
     rx: u64,
@@ -180,19 +180,20 @@ pub struct AllNetworkSpeedWidget {
 }
 impl AllNetworkSpeedWidget {
     pub fn new(num_samples: usize) -> Self {
+        let dev_pat= Regex::new("(enp|eno).*").expect("bad re");
         let nics = std::fs::read_dir(NETWORK_PATH_PREFIX)
             .expect(&format!("couldn't list {NETWORK_PATH_PREFIX}"))
             .filter_map(|dir| {
                 let d = dir.unwrap();
                 let p = d.file_name();
                 let p = p.to_string_lossy();
-                if p.starts_with(DEVICE_PREFIX) {
+                if dev_pat.is_match(&p) {
                     Some(NetworkSpeedWidget::new(&p, num_samples))
                 } else {
                     None
                 }
             })
-            .collect();
+        .collect();
 
         AllNetworkSpeedWidget { num_samples, nics }
     }