Move about: URL handling from parsing to loading. Fix #1094

src/components/net/resource_task.rs

@@ -10,6 +10,7 @@ use data_loader;
 
 use std::comm::{channel, Receiver, Sender};
 use std::task::TaskBuilder;
+use std::os;
 use http::headers::content_type::MediaType;
 use ResponseHeaderCollection = http::headers::response::HeaderCollection;
 use RequestHeaderCollection = http::headers::request::HeaderCollection;
@@ -202,15 +203,33 @@ impl ResourceManager {
         }
     }
 
-    fn load(&self, load_data: LoadData, start_chan: Sender<LoadResponse>) {
+    fn load(&self, mut load_data: LoadData, start_chan: Sender<LoadResponse>) {
         let loader = match load_data.url.scheme.as_slice() {
             "file" => file_loader::factory(),
             "http" => http_loader::factory(),
             "data" => data_loader::factory(),
+            "about" => {
+                match load_data.url.non_relative_scheme_data().unwrap() {
+                    "crash" => fail!("Loading the about:crash URL."),
+                    "failure" => {
+                        // FIXME: Find a way to load this without relying on the `../src` directory.
+                        let mut path = os::self_exe_path().expect("can't get exe path");
+                        path.pop();
+                        path.push_many(["src", "test", "html", "failure.html"]);
+                        load_data.url = Url::from_file_path(&path).unwrap();
+                        file_loader::factory()
+                    }
+                    _ => {
+                        start_sending(start_chan, Metadata::default(load_data.url))
+                            .send(Done(Err("Unknown about: URL.".to_string())));
+                        return
+                    }
+                }
+            },
             _ => {
                 debug!("resource_task: no loader for scheme {:s}", load_data.url.scheme);
                 start_sending(start_chan, Metadata::default(load_data.url))
-                                          .send(Done(Err("no loader for scheme".to_string())));
+                    .send(Done(Err("no loader for scheme".to_string())));
                 return
             }
         };

src/components/util/url.rs

@@ -42,21 +42,6 @@ pub fn try_parse_url(str_url: &str, base_url: Option<Url>) -> Result<Url, &'stat
         },
         Ok(url) => {
             match (url.scheme.as_slice(), url.scheme_data.clone()) {
-                ("about", rust_url::OtherSchemeData(scheme_data)) => {
-                    match scheme_data.as_slice() {
-                        "crash" => {
-                            fail!("about:crash");
-                        }
-                        "failure" => {
-                            let mut path = os::self_exe_path().expect("can't get exe path");
-                            path.push("../src/test/html/failure.html");
-                            // FIXME (#1094): not the right way to transform a path
-                            format!("file://{}", path.display().to_str())
-                        }
-                        // TODO: handle the rest of the about: pages
-                        _ => str_url.to_string()
-                    }
-                },
                 ("data", _) => {
                     // Drop whitespace within data: URLs, e.g. newlines within a base64
                     // src="..." block.  Whitespace intended as content should be