rocket::mtls::x509::der_parser::asn1_rs::nom::number::streaming

Function be_u16

Source 
pub fn be_u16<I, E>(input: I) -> Result<(I, u16), Err<E>>
where
    E: ParseError<I>,
    I: Slice<RangeFrom<usize>> + InputIter<Item = u8> + InputLength,
Available on crate feature mtls only.
Expand description

Recognizes a big endian unsigned 2 bytes integer.

Streaming version: Will return Err(nom::Err::Incomplete(_)) if there is not enough data.

use nom::number::streaming::be_u16;

let parser = |s| {
  be_u16::<_, (_, ErrorKind)>(s)
};

assert_eq!(parser(&b"\x00\x01abcd"[..]), Ok((&b"abcd"[..], 0x0001)));
assert_eq!(parser(&b"\x01"[..]), Err(Err::Incomplete(Needed::new(1))));