chore(cli): introduce structopt for reading cli opts

1 files changed, 11 insertions, 1 deletions

diff --git a/src/main.rs b/src/main.rs
index 1d416e4..7b02b94 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -4,6 +4,15 @@ use ::std::io;
 use ::termion::raw::IntoRawMode;
 use ::tui::backend::TermionBackend;
 
+use structopt::StructOpt;
+
+#[derive(StructOpt, Debug)]
+#[structopt(name = "what")]
+struct Opt {
+    #[structopt(short, long)]
+    interface: String
+}
+
 fn main () {
 
     #[cfg(not(target_os = "linux"))]
@@ -11,11 +20,12 @@ fn main () {
 
     use os::{KeyboardEvents, get_interface, get_datalink_channel, get_process_name, get_open_sockets};
 
+    let opt = Opt::from_args();
     let stdout = io::stdout().into_raw_mode().unwrap();
     let terminal_backend = TermionBackend::new(stdout);
 
     let keyboard_events = Box::new(KeyboardEvents);
-    let network_interface = get_interface().unwrap();
+    let network_interface = get_interface(&opt.interface).unwrap();
     let network_frames = get_datalink_channel(&network_interface);
 
     let os_input = what::OsInput {