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use rustc_serialize::json::Json;
use std::str;
use std::io::BufRead;
pub trait JsonObjectStreamer: Sized {
fn json_objects(&mut self) -> JsonObjects<Self>;
}
impl<T: BufRead> JsonObjectStreamer for T {
fn json_objects(&mut self) -> JsonObjects<T> {
JsonObjects { reader: self }
}
}
pub struct JsonObjects<'a, B> where B: 'a {
reader: &'a mut B
}
impl<'a, B> Iterator for JsonObjects<'a, B> where B: BufRead + 'a {
type Item = Json;
fn next(&mut self) -> Option<Json> {
let mut buf: Vec<u8> = Vec::new();
let _ = self.reader.read_until(b'\r', &mut buf);
if buf.last() == Some(&b'\r') {
buf.pop();
let mut b: String = String::new();
match self.reader.read_line(&mut b) {
Ok(_) => (),
Err(_) => return None,
}
}
let line = match str::from_utf8(&buf) {
Ok(line) => line,
Err(_) => return None
};
Json::from_str(line).ok()
}
}
extern crate url;
#[macro_use] extern crate hyper;
extern crate rustc_serialize;
extern crate oauthcli;
extern crate tokio_core;
extern crate futures;
extern crate hyper_tls;
use hyper::{Client, Method, Request};
use hyper::header::Headers;
use std::io::BufReader;
use tokio_core::reactor::Core;
use futures::future::Future;
use futures::Stream;
use hyper::client::FutureResponse;
use hyper_tls::HttpsConnector;
//use json_streamer::JsonObjectStreamer;
header! { (Authorization, "Authorization") => [String] }
header! { (Accept, "Accept") => [String] }
header! { (ContentType, "Content-Type") => [String] }
fn main() {
//Change these values to your real Twitter API credentials
let consumer_key = "0af9c1AoEi5X7IjtOKAtP60Za";
let consumer_secret = "1fxEzRhQtQSWKus4oqDwdg5DALIjGpINg0PGjkYVwKT8EEMFCh";
let token = "629126745-VePBD9ciKwpuVuIeEcNnxwxQFNWDXEy8KL3dGRRg";
let token_secret = "uAAruZzJu03NvMlH6cTeGku7NqVPro1ddKN4BxORy5hWG";
//Track words
// let params: Vec<(String, String)> = vec![("track".to_string(), "london".to_string())];
let params: Vec<(String, String)> = vec![];
// let url = "https://stream.twitter.com/1.1/statuses/filter.json";
let url = "https://userstream.twitter.com/1.1/user.json";
// let url = "https://stream.twitter.com/1.1/statuses/sample.json";
let header = oauthcli::authorization_header(
"GET",
url::Url::parse(url).unwrap(),
None, // Realm
consumer_key,
consumer_secret,
Some(token),
Some(token_secret),
oauthcli::SignatureMethod::HmacSha1,
&oauthcli::timestamp(),
&oauthcli::nonce(),
None, // oauth_callback
None, // oauth_verifier
params.clone().into_iter()
);
let mut core = Core::new().unwrap();
let connector = HttpsConnector::new(4, &core.handle()).unwrap();
let client = Client::configure()
.keep_alive(true)
.connector(connector)
.build(&core.handle());
let param_string: String = params.iter().map(|p| p.0.clone() + &"=".to_string() + &p.1).collect::<Vec<String>>().join("&");
let mut req = Request::new(Method::Get, url.parse().unwrap());
req.set_body(param_string);
{
let mut headers = req.headers_mut();
headers.set(Authorization(header.to_owned()));
headers.set(Accept("*/*".to_owned()));
headers.set(ContentType("application/x-www-form-urlencoded".to_owned()));
};
println!("requesting...");
/*
let work = client.request(req).and_then(|res| {
res.body().for_each(move |body: hyper::Chunk| {
println!("hmmm");
println!("{}", std::str::from_utf8(&body).unwrap());
Ok(())
})
});
*/
let work = client.request(req).and_then(|res| {
LineStream::new(res.body()
.map(|chunk| futures::stream::iter(chunk.into_iter().map(|b| -> Result<u8, hyper::Error> { Ok(b) })))
.flatten())
.for_each(|s| Ok(print!("{}", str::from_utf8(&s).unwrap())))
});
println!("Before?");
let resp = core.run(work).unwrap();
println!("After?");
/*
for obj in BufReader::new(res).json_objects() {
println!("{:?}", obj.as_object().unwrap().get("text").unwrap().as_string().unwrap());
}*/
}
//extern crate futures;
//use futures::stream::Stream;
//use futures::{Future, Poll, Async};
use futures::{Poll, Async};
/*
fn main() {
let lines = "line 1.\nline 2...\n LINE 3 \n".as_bytes();
let bytestream = futures::stream::iter(lines.iter().map(|byte| -> Result<_, ()> { Ok(*byte) }));
let linestream = LineStream::new(bytestream);
linestream.for_each(|line| {
println!("Bytes: {:?}", line);
println!("Line: {}", String::from_utf8(line).unwrap());
Ok(())
}).wait().unwrap()
}
*/
struct LineStream<S, E> where S: Stream<Item=u8, Error=E> {
stream: S,
progress: Vec<u8>
}
impl<S,E> LineStream<S, E> where S: Stream<Item=u8, Error=E> + Sized {
pub fn new(stream: S) -> LineStream<S, E> {
LineStream {
stream: stream,
progress: vec![]
}
}
}
impl<S, E> Stream for LineStream<S, E> where S: Stream<Item=u8, Error=E> {
type Item = Vec<u8>;
type Error = E;
fn poll(&mut self) -> Poll<Option<Self::Item>, Self::Error> {
loop {
match self.stream.poll() {
Ok(Async::Ready(Some(byte))) => {
if byte == 0x0a {
let mut new_vec = vec![];
std::mem::swap(&mut self.progress, &mut new_vec);
return Ok(Async::Ready(Some(new_vec)))
} else {
self.progress.push(byte)
}
},
Ok(Async::Ready(None)) => return Ok(Async::Ready(None)),
Ok(Async::NotReady) => return Ok(Async::NotReady),
Err(e) => return Err(e)
}
}
}
}
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