Support empty CAN interface name to stop after load/parse

1 files changed, 12 insertions, 6 deletions

diff --git a/src/main.rs b/src/main.rs
index f9e91a3..3103f5f 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -67,13 +67,19 @@ fn main() {
     info!("Read {} unit definitions", units.count());
     info!("Read {} derived definitions", derived.count());
 
+    let args: Vec<String> = args().collect();
+    let iface = if args.len() > 1 {
+        args[1].clone()
+    } else {
+        "vcan0".into()
+    };
+
+    if iface.len() == 0 {
+        info!("Stopping now");
+        return;
+    }
+
     let world = futures::future::lazy(move || {
-        let args: Vec<String> = args().collect();
-        let iface = if args.len() > 1 {
-            args[1].clone()
-        } else {
-            "vcan0".into()
-        };
         info!("Connecting Canopied to {}", iface);
         let (sink, stream) = isotp::ISOTP::new(&iface).split();
         let (sender, receiver) = mpsc::channel(100);