pub fn take_until<T, Input, Error: ParseError<Input>>(
tag: T
) -> impl Fn(Input) -> IResult<Input, Input, Error> where
Input: InputTake + FindSubstring<T>,
T: InputLength + Clone, Expand description
Returns the input slice up to the first occurrence of the pattern.
It doesn’t consume the pattern. It will return Err(Err::Error((_, ErrorKind::TakeUntil)))
if the pattern wasn’t met.
Example
use nom::bytes::complete::take_until;
fn until_eof(s: &str) -> IResult<&str, &str> {
take_until("eof")(s)
}
assert_eq!(until_eof("hello, worldeof"), Ok(("eof", "hello, world")));
assert_eq!(until_eof("hello, world"), Err(Err::Error(Error::new("hello, world", ErrorKind::TakeUntil))));
assert_eq!(until_eof(""), Err(Err::Error(Error::new("", ErrorKind::TakeUntil))));
assert_eq!(until_eof("1eof2eof"), Ok(("eof2eof", "1")));