# Function nom::bytes::complete::take_until1

source · [−]

    pub fn take_until1<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 non empty 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_until1;

    fn until_eof(s: &str) -> IResult<&str, &str> {
      take_until1("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")));
    assert_eq!(until_eof("eof"), Err(Err::Error(Error::new("eof", ErrorKind::TakeUntil))));