ew cant async because rust reaps thread running tinyaudio need holder

src/main.rs

@@ -30,17 +30,40 @@ fn play_with_flags(flags: &flags::Flags) {
     ));
 
     let mut i = 0;
-    let mut sync = true;
     for p in flags.play.iter() {
         for p in play::new(p.clone()) {
             syn_seq.append(i as i32, p);
             i += 1;
         }
     }
-    if i == 0 {
-        sync = false;
-        let s: String = prompt!("> ").parse().expect("failed to readline");
-        panic!("not impl");
+
+    let sync = i > 0;
+    if !sync {
+        let mut to_break = false;
+        let mut payload = vec![];
+        loop {
+            let mut s: String = prompt!("> ").parse().expect("failed to readline");
+            s = s.split_whitespace().join(" ");
+            payload.push(s.clone());
+            match s.as_ref() {
+                "" => match to_break {
+                    false => {
+                        to_break = true;
+                    }
+                    true => {
+                        break;
+                    }
+                },
+                _ => {
+                    to_break = false;
+                }
+            };
+        }
+
+        for p in play::new(payload.join("\n")) {
+            syn_seq.append(i as i32, p);
+            i += 1;
+        }
     }
 
     play(syn_seq, flags.sample_rate, flags.bpm, sync);