pub fn hex_digit1<T, E: ParseError<T>>(input: T) -> IResult<T, T, E> where
T: InputTakeAtPosition,
<T as InputTakeAtPosition>::Item: AsChar, Expand description
Recognizes one or more ASCII hexadecimal numerical characters: 0-9, A-F, a-f
Complete version: Will return an error if there’s not enough input data, or the whole input if no terminating token is found (a non hexadecimal digit character).
Example
fn parser(input: &str) -> IResult<&str, &str> {
hex_digit1(input)
}
assert_eq!(parser("21cZ"), Ok(("Z", "21c")));
assert_eq!(parser("H2"), Err(Err::Error(Error::new("H2", ErrorKind::HexDigit))));
assert_eq!(parser(""), Err(Err::Error(Error::new("", ErrorKind::HexDigit))));