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use std::fmt::{self, Display};
use std::str::FromStr;
use unicase::Ascii;
pub use self::ConnectionOption::{KeepAlive, Close, ConnectionHeader};
static KEEP_ALIVE: &'static str = "keep-alive";
static CLOSE: &'static str = "close";
#[derive(Clone, PartialEq, Debug)]
pub enum ConnectionOption {
KeepAlive,
Close,
ConnectionHeader(Ascii<String>),
}
impl FromStr for ConnectionOption {
type Err = ();
fn from_str(s: &str) -> Result<ConnectionOption, ()> {
if Ascii::new(s) == KEEP_ALIVE {
Ok(KeepAlive)
} else if Ascii::new(s) == CLOSE {
Ok(Close)
} else {
Ok(ConnectionHeader(Ascii::new(s.to_owned())))
}
}
}
impl Display for ConnectionOption {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
f.write_str(match *self {
KeepAlive => "keep-alive",
Close => "close",
ConnectionHeader(ref s) => s.as_ref()
})
}
}
header! {
(Connection, "Connection") => (ConnectionOption)+
test_connection {
test_header!(test1, vec![b"close"]);
test_header!(test2, vec![b"keep-alive"]);
test_header!(test3, vec![b"upgrade"]);
}
}
impl Connection {
#[inline]
pub fn close() -> Connection {
Connection(vec![ConnectionOption::Close])
}
#[inline]
pub fn keep_alive() -> Connection {
Connection(vec![ConnectionOption::KeepAlive])
}
}
bench_header!(close, Connection, { vec![b"close".to_vec()] });
bench_header!(keep_alive, Connection, { vec![b"keep-alive".to_vec()] });
bench_header!(header, Connection, { vec![b"authorization".to_vec()] });
#[cfg(test)]
mod tests {
use super::{Connection,ConnectionHeader};
use header::Header;
use unicase::Ascii;
fn parse_option(header: Vec<u8>) -> Connection {
let val = header.into();
let connection: Connection = Header::parse_header(&val).unwrap();
connection
}
#[test]
fn test_parse() {
assert_eq!(Connection::close(),parse_option(b"close".to_vec()));
assert_eq!(Connection::keep_alive(),parse_option(b"keep-alive".to_vec()));
assert_eq!(Connection::keep_alive(),parse_option(b"Keep-Alive".to_vec()));
assert_eq!(Connection(vec![ConnectionHeader(Ascii::new("upgrade".to_owned()))]),
parse_option(b"upgrade".to_vec()));
}
}