Allow serving a single file

examples/serve_dir.rs

@@ -11,7 +11,8 @@ async fn main() -> Result<()> {
         .init();
 
     Server::bind(("localhost", GEMINI_PORT))
-        .add_route("/", PathBuf::from("public"))
+        .add_route("/", PathBuf::from("public")) // Serve directory listings & file contents
+        .add_route("/about", PathBuf::from("README.md")) // Serve a single file
         .serve()
         .await
 }

src/handling.rs

@@ -84,9 +84,14 @@ impl Handler {
             },
             #[cfg(feature = "serve_dir")]
             Self::FilesHandler(path) => {
-                let resp = crate::util::serve_dir(path, request.trailing_segments()).await;
+                let resp = if path.is_dir() {
+                    crate::util::serve_dir(path, request.trailing_segments()).await
+                } else {
+                    let mime = crate::util::guess_mime_from_path(&path);
+                    crate::util::serve_file(path, &mime).await
+                };
                 resp.unwrap_or_else(|e| {
-                    warn!("Unexpected error serving from dir {}: {:?}", path.display(), e);
+                    warn!("Unexpected error serving from {}: {:?}", path.display(), e);
                     Response::server_error("").unwrap()
                 })
             },
@@ -164,6 +169,9 @@ impl From<PathBuf> for Handler {
     /// This is equivilent to serving files using [`util::serve_dir()`], and as such will
     /// include directory listings.
     ///
+    /// The path to a single file can be passed in order to serve only a single file for
+    /// any and all requests.
+    ///
     /// [`util::serve_dir()`]: crate::util::serve_dir()
     fn from(path: PathBuf) -> Self {
         Self::FilesHandler(path)