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/* 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, LoadData, start_sending, TargetedLoadResponse, ResponseSenders};
use resource_task::ProgressMsg::{Payload, Done};
use std::borrow::ToOwned;
use std::io;
use std::io::File;
use std::sync::mpsc::Sender;
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)).unwrap(),
Err(e) => match e.kind {
io::EndOfFile => {
if buf.len() > 0 {
progress_chan.send(Payload(buf)).unwrap();
}
return Ok(());
}
_ => return Err(e.desc.to_string()),
}
}
}
}
pub fn factory(load_data: LoadData, start_chan: Sender<TargetedLoadResponse>) {
let url = load_data.url;
assert!("file" == url.scheme.as_slice());
let senders = ResponseSenders {
immediate_consumer: start_chan,
eventual_consumer: load_data.consumer,
};
let progress_chan = start_sending(senders, Metadata::default(url.clone()));
spawn_named("file_loader".to_owned(), move || {
let file_path: Result<Path, ()> = url.to_file_path();
match file_path {
Ok(file_path) => {
match File::open_mode(&Path::new(file_path), 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())));
}
}
}
Err(_) => {
progress_chan.send(Done(Err(url.to_string())));
}
}
});
}
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