Function nom::number::complete::be_u32

pub fn be_u32<I, E: ParseError<I>>(input: I) -> IResult<I, u32, E> where
    I: Slice<RangeFrom<usize>> + InputIter<Item = u8> + InputLength, 

Recognizes a big endian unsigned 4 bytes integer.

Complete version: Returns an error if there is not enough input data.

use nom::number::complete::be_u32;

let parser = |s| {
  be_u32(s)
};

assert_eq!(parser(&b"\x00\x03\x05\x07abcefg"[..]), Ok((&b"abcefg"[..], 0x00030507)));
assert_eq!(parser(&b"\x01"[..]), Err(Err::Error((&[0x01][..], ErrorKind::Eof))));