xmpp-rs/examples/echo_bot.rs

101 lines
3 KiB
Rust

extern crate futures;
extern crate tokio_core;
extern crate tokio_xmpp;
extern crate jid;
extern crate xml;
use std::env::args;
use std::process::exit;
use tokio_core::reactor::Core;
use futures::{Future, Stream, Sink, future};
use tokio_xmpp::Client;
fn main() {
let args: Vec<String> = args().collect();
if args.len() != 3 {
println!("Usage: {} <jid> <password>", args[0]);
exit(1);
}
let jid = &args[1];
let password = &args[2];
// tokio_core context
let mut core = Core::new().unwrap();
// Client instance
let client = Client::new(jid, password, core.handle()).unwrap();
// Make the two interfaces for sending and receiving independent
// of each other so we can move one into a closure.
let (sink, stream) = client.split();
// Wrap sink in Option so that we can take() it for the send(self)
// to consume and return it back when ready.
let mut sink = Some(sink);
let mut send = move |stanza| {
sink = Some(
sink.take().
expect("sink")
.send(stanza)
.wait()
.expect("sink.send")
);
};
// Main loop, processes events
let done = stream.for_each(|event| {
if event.is_online() {
println!("Online!");
let presence = make_presence();
send(presence);
} else if let Some(stanza) = event.as_stanza() {
if stanza.name == "message" &&
stanza.get_attribute("type", None) != Some("error") {
// This is a message we'll echo
let from = stanza.get_attribute("from", None);
let body = stanza.get_child("body", Some("jabber:client"))
.map(|el| el.content_str());
match (from.as_ref(), body) {
(Some(from), Some(body)) => {
let reply = make_reply(from, body);
send(reply);
},
_ => (),
};
}
}
Box::new(future::ok(()))
});
// Start polling `done`
match core.run(done) {
Ok(_) => (),
Err(e) => {
println!("Fatal: {}", e);
()
}
}
}
// Construct a <presence/>
fn make_presence() -> xml::Element {
let mut presence = xml::Element::new("presence".to_owned(), None, vec![]);
presence.tag(xml::Element::new("status".to_owned(), None, vec![]))
.text("chat".to_owned());
presence.tag(xml::Element::new("show".to_owned(), None, vec![]))
.text("Echoing messages".to_owned());
presence
}
// Construct a chat <message/>
fn make_reply(to: &str, body: String) -> xml::Element {
let mut message = xml::Element::new(
"message".to_owned(),
None,
vec![("type".to_owned(), None, "chat".to_owned()),
("to".to_owned(), None, to.to_owned())]
);
message.tag(xml::Element::new("body".to_owned(), None, vec![]))
.text(body);
message
}