fix(console): make long locations readable

This closes tokio-rs#411.

tokio-console/src/view/task.rs

@@ -155,10 +155,18 @@ impl TaskView {
             Span::raw(task.target()),
         ]));
 
-        overview.push(Spans::from(vec![
-            bold("Location: "),
-            Span::raw(task.location()),
-        ]));
+        let title = "Location: ";
+        let row_len = task.location().len() + title.len();
+        let location = if row_len > stats_area[0].width.into() {
+            // NOTE: 4 is because `...` is added to the front of the location + an extra space.
+            let diff = row_len + 4 - stats_area[0].width as usize;
+            let location = task.location()[diff..].to_string();
+            format!("...{}", location)
+        } else {
+            task.location().to_string()
+        };
+
+        overview.push(Spans::from(vec![bold(title), Span::raw(location)]));
 
         let total = task.total(now);