Cargoify servo

components/net/file_loader.rs

@@ -0,0 +1,50 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+use resource_task::{ProgressMsg, Metadata, Payload, Done, LoaderTask, start_sending};
+
+use std::io;
+use std::io::File;
+use servo_util::task::spawn_named;
+
+static READ_SIZE: uint = 8192;
+
+fn read_all(reader: &mut io::Stream, progress_chan: &Sender<ProgressMsg>)
+        -> Result<(), String> {
+    loop {
+        let mut buf = vec!();
+        match reader.push_at_least(READ_SIZE, READ_SIZE, &mut buf) {
+            Ok(_) => progress_chan.send(Payload(buf)),
+            Err(e) => match e.kind {
+                io::EndOfFile => {
+                    if buf.len() > 0 {
+                        progress_chan.send(Payload(buf));
+                    }
+                    return Ok(());
+                }
+                _ => return Err(e.desc.to_string()),
+            }
+        }
+    }
+}
+
+pub fn factory() -> LoaderTask {
+    let f: LoaderTask = proc(load_data, start_chan) {
+        let url = load_data.url;
+        assert!("file" == url.scheme.as_slice());
+        let progress_chan = start_sending(start_chan, Metadata::default(url.clone()));
+        spawn_named("file_loader", proc() {
+            match File::open_mode(&Path::new(url.serialize_path().unwrap()), io::Open, io::Read) {
+                Ok(ref mut reader) => {
+                    let res = read_all(reader as &mut io::Stream, &progress_chan);
+                    progress_chan.send(Done(res));
+                }
+                Err(e) => {
+                    progress_chan.send(Done(Err(e.desc.to_string())));
+                }
+            };
+        });
+    };
+    f
+}