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#![crate_id = "irc#0.1"]
#![crate_type = "lib"]
use std::io::TcpStream;
use std::io::BufferedReader;
use std::io::IoError;
use msg::Message;
use msg::cmd;
pub mod msg;
pub mod state {
use msg::Message;
use std::io::TcpStream;
pub struct Disconnected;
pub struct Connected {
pub output: Sender<Message>,
pub stream: TcpStream,
}
impl Drop for Connected {
fn drop(&mut self) {
let _ = self.stream.close_read();
let _ = self.stream.close_write();
}
}
}
pub struct IrcClient<State> {
nick: Option<String>,
username: Option<String>,
real_name: Option<String>,
state: State,
}
impl IrcClient <state::Disconnected> {
pub fn new(nick: String, username: String, real_name: String) -> IrcClient<state::Disconnected> {
IrcClient { nick: Some(nick), username: Some(username), real_name: Some(real_name), state: state::Disconnected }
}
#[allow(experimental)]
pub fn connect(mut self, host: &str, port: u16, message_sender: Sender<Message>) -> Result<IrcClient<state::Connected>, (IoError, IrcClient<state::Disconnected>)> {
let stream = match TcpStream::connect(host, port) {
Ok(stream) => stream,
Err(e) => return Err((e, self))
};
let (send_writer, rec_writer) = channel();
let connection = IrcClient{
nick: self.nick.take(),
username: self.username.take(),
real_name: self.real_name.take(),
state: state::Connected {
stream: stream.clone(),
output: send_writer.clone(),
}
};
let reader = stream.clone();
let writer = stream;
// spawn writer thread
spawn(proc() {
let mut writer = writer;
for msg in rec_writer.iter() {
(write!(writer, "{}\r\n", msg)).ok().expect("Unable to write to stream");
}
});
spawn(proc() {
let mut reader = reader;
loop {
fn reader_by_ref<'a, R: Reader>(reader: &'a mut R) -> std::io::RefReader<'a, R> { reader.by_ref() }
reader.set_read_timeout(Some(500));
let mut buf_reader = BufferedReader::new(reader_by_ref(&mut reader));
let line = buf_reader.read_line();
match line {
Ok(line) => match from_str::<Message>(line.as_slice().trim_right()) {
Some(msg) => {
if message_sender.send_opt(msg.clone()).is_err() {
break;
}
if on_msg_rec(&msg, &send_writer).is_err() {
break;
}
},
None => println!("Invalid Message recieved"),
},
Err(IoError{kind: std::io::TimedOut, ..}) => continue,
Err(e) => {
println!("Unable to read line: {}", e);
break;
}
}
}
});
Ok(connection)
}
}
impl IrcClient<state::Connected> {
pub fn disconnect(self) -> IrcClient<state::Disconnected> {
let IrcClient { nick: nick, username:username, real_name:real_name, .. } = self;
IrcClient {
state: state::Disconnected,
nick: nick,
username: username,
real_name: real_name,
}
}
pub fn send(&mut self, msg: Message) {
self.state.output.send(msg);
}
pub fn sender<'a>(&'a self) -> &'a Sender<Message> {
&self.state.output
}
}
fn on_msg_rec(msg: &Message, sender: &Sender<Message>) -> Result<(), Message> {
let _prefix = &msg.prefix;
let cmd = &msg.command;
match *cmd {
cmd::Ping(ref s) => sender.send_opt(Message::new(cmd::Pong(s.clone()))),
_ => Ok(())
}
}
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