Function combine::parser::repeat::take_until

pub fn take_until<F, Input, P>(end: P) -> TakeUntil<F, P> where
    Input: Stream,
    F: Extend<<Input as StreamOnce>::Token> + Default,
    P: Parser<Input>, 

Takes input until end is encountered or end indicates that it has committed input before failing (attempt can be used to make it look like it has not committed any input)

let mut char_parser = take_until(char::digit());
assert_eq!(char_parser.parse("abc123"), Ok(("abc".to_string(), "123")));

let mut byte_parser = take_until(byte::bytes(&b"TAG"[..]));
assert_eq!(byte_parser.parse(&b"123TAG"[..]), Ok((b"123".to_vec(), &b"TAG"[..])));
assert!(byte_parser.parse(&b"123TATAG"[..]).is_err());

// `attempt` must be used if the `end` should be consume input before failing
let mut byte_parser = take_until(attempt(byte::bytes(&b"TAG"[..])));
assert_eq!(byte_parser.parse(&b"123TATAG"[..]), Ok((b"123TA".to_vec(), &b"TAG"[..])));