make the event parser a proper iterator and block while waiting for input

examples/print.rs

@@ -6,14 +6,12 @@ use ants::{
 fn main() {
 	raw_mode::enter().unwrap();
 	print!("Press Ctrl+q to exit.\r\n");
-	let mut events = Events::new();
-	loop {
-		if let Some(event) = events.next() {
+
+	for event in Events::new() {
 		print!("{:?}\r\n", event);
 		if let Event::Key(Key::Char('q'), Mod::Ctrl) = event {
 			break;
 		}
 	}
-	}
 	raw_mode::exit().unwrap();
 }

src/event.rs

@@ -116,9 +116,17 @@ impl Iterator for Events {
 	type Item = Event;
 
 	fn next(&mut self) -> Option<Self::Item> {
-		self.source.read_to_end(&mut self.buffer).ok()?;
 		if self.buffer.is_empty() {
-			return None;
+			let mut buf = [0];
+			while let Ok(0) = self.source.read(&mut buf) {
+				// there has to be a better way to make this blocking...
+				std::thread::sleep(std::time::Duration::from_millis(5));
+			}
+			// TODO handle read errors
+			self.buffer.push(buf[0]);
+			while let Ok(1) = self.source.read(&mut buf) {
+				self.buffer.push(buf[0]);
+			}
 		}
 
 		Some(self.parse())