Merge pull request #332 from budziq/silence_404s

error spewing on iron 404 errors

src/bin/mdbook.rs

@@ -13,14 +13,6 @@ extern crate time;
 #[cfg(feature = "watch")]
 extern crate crossbeam;
 
-// Dependencies for the Serve feature
-#[cfg(feature = "serve")]
-extern crate iron;
-#[cfg(feature = "serve")]
-extern crate staticfile;
-#[cfg(feature = "serve")]
-extern crate ws;
-
 use std::env;
 use std::error::Error;
 use std::ffi::OsStr;
@@ -93,7 +85,7 @@ fn main() {
         #[cfg(feature = "watch")]
         ("watch", Some(sub_matches)) => watch(sub_matches),
         #[cfg(feature = "serve")]
-        ("serve", Some(sub_matches)) => serve(sub_matches),
+        ("serve", Some(sub_matches)) => serve::serve(sub_matches),
         ("test", Some(sub_matches)) => test(sub_matches),
         (_, _) => unreachable!(),
     };
@@ -233,17 +225,42 @@ fn watch(args: &ArgMatches) -> Result<(), Box<Error>> {
     Ok(())
 }
 
-
-// Watch command implementation
 #[cfg(feature = "serve")]
-fn serve(args: &ArgMatches) -> Result<(), Box<Error>> {
+mod serve {
+    extern crate iron;
+    extern crate staticfile;
+    extern crate ws;
+
+    use std;
+    use std::path::Path;
+    use std::error::Error;
+    use self::iron::{Iron, AfterMiddleware, IronResult, IronError, Request, Response, status, Set, Chain};
+    use clap::ArgMatches;
+    use mdbook::MDBook;
+
+    use {get_book_dir, open, trigger_on_change};
+
+    struct ErrorRecover;
+
+    impl AfterMiddleware for ErrorRecover {
+        fn catch(&self, _: &mut Request, err: IronError) -> IronResult<Response> {
+            match err.response.status {
+                // each error will result in 404 response
+                Some(_) => Ok(err.response.set(status::NotFound)),
+                _ => Err(err),
+            }
+        }
+    }
+
+    // Watch command implementation
+    pub fn serve(args: &ArgMatches) -> Result<(), Box<Error>> {
         const RELOAD_COMMAND: &'static str = "reload";
 
         let book_dir = get_book_dir(args);
         let book = MDBook::new(&book_dir).read_config()?;
 
         let mut book = match args.value_of("dest-dir") {
-        Some(dest_dir) => book.with_destination(dest_dir),
+            Some(dest_dir) => book.with_destination(Path::new(dest_dir)),
             None => book,
         };
 
@@ -286,9 +303,10 @@ fn serve(args: &ArgMatches) -> Result<(), Box<Error>> {
 
         book.build()?;
 
-    let staticfile = staticfile::Static::new(book.get_destination().expect("destination is present, checked before"));
-    let iron = iron::Iron::new(staticfile);
-    let _iron = iron.http(&*address).unwrap();
+        let mut chain = Chain::new(staticfile::Static::new(book.get_destination()
+                                                               .expect("destination is present, checked before")));
+        chain.link_after(ErrorRecover);
+        let _iron = Iron::new(chain).http(&*address).unwrap();
 
         let ws_server = ws::WebSocket::new(|_| |_| Ok(())).unwrap();
 
@@ -313,9 +331,9 @@ fn serve(args: &ArgMatches) -> Result<(), Box<Error>> {
         });
 
         Ok(())
+    }
 }
 
-
 fn test(args: &ArgMatches) -> Result<(), Box<Error>> {
     let book_dir = get_book_dir(args);
     let mut book = MDBook::new(&book_dir).read_config()?;