Add a Last-Modified header

Author: alexcrichton

src/conduit-static.rs

@@ -1,5 +1,6 @@
-extern crate mime = "mime-types";
 extern crate conduit;
+extern crate mime = "mime-types";
+extern crate time;
 
 use std::fmt::Show;
 use std::collections::HashMap;
@@ -47,10 +48,17 @@ impl Handler for Static {
             }
         };
         let stat = try!(file.stat().map_err(|e| box e as Box<Show>));
+        let ts = time::Timespec {
+            sec: (stat.modified as i64) / 1000,
+            nsec: ((stat.modified as i32) % 1000) * 1000
+        };
+        let tm = time::at(ts).to_utc();
 
         let mut headers = HashMap::new();
         headers.insert("Content-Type".to_str(), vec![mime.to_str()]);
         headers.insert("Content-Length".to_str(), vec![stat.size.to_str()]);
+        headers.insert("Last-Modified".to_str(),
+                       vec![tm.strftime("%a, %d %b %Y %T GMT")]);
 
         Ok(Response {
             status: (200, "OK"),
@@ -112,4 +120,16 @@ mod tests {
         let res = handler.call(&mut req).ok().expect("No response");
         assert_eq!(res.status.val0(), 404);
     }
+
+    #[test]
+    fn last_modified() {
+        let td = TempDir::new("conduit-static").unwrap();
+        let root = td.path();
+        File::create(&root.join("test")).unwrap();
+        let handler = Static::new(root.clone());
+        let mut req = test::MockRequest::new(conduit::Get, "/test");
+        let res = handler.call(&mut req).ok().expect("No response");
+        assert_eq!(res.status.val0(), 200);
+        assert!(res.headers.find_equiv(&"Last-Modified").is_some());
+    }
 }