pub fn take_until<T, Input, Error: ParseError<Input>>(
tag: T
) -> impl Fn(Input) -> IResult<Input, Input, Error> where
Input: InputTake + InputLength + FindSubstring<T>,
T: Clone,
Expand description
Returns the input slice up to the first occurrence of the pattern.
It doesn’t consume the pattern.
Streaming Specific
Streaming version will return a Err::Incomplete(Needed::new(N))
if the input doesn’t
contain the pattern or if the input is smaller than the pattern.
Example
use nom::bytes::streaming::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::Incomplete(Needed::Unknown)));
assert_eq!(until_eof("hello, worldeo"), Err(Err::Incomplete(Needed::Unknown)));
assert_eq!(until_eof("1eof2eof"), Ok(("eof2eof", "1")));