This crate provides macros for working with bytes and hexadecimal values.

hex!

hex! is a macro which converts string literals ("7D2B") to byte arrays ([0x7D, 0x2B]) or match patterns at compile time.

assert_eq!(hex!("01020304"), [1, 2, 3, 4]);

parse_struct!

parse_struct! is a macro for parsing bytes from Read readers into structs (or enums), with the ability to skip padding bytes. It returns a Result<Struct, std::io::Error> value.

``` use hexmagic::parsestruct; use std::io::{Read, Result};

[derive(Debug)]

struct Data { a: [u8; 2], b: u32, }

fn main() -> Result<()> { let bytes = [ 0x48, 0x45, 0x58, 0x00, 0x01, 0x02, 0x00, 0xAA, 0xBB, 0xCC, 0xDD, ]; let data = parsestruct!(bytes.asref() => Data { : b"HEX", _: [0], a: [0x01, _], _: "00", b: buf @ "AABB __" => u32::fromle_bytes(*buf), })?; println!("{:X?}", data); // Data { a: [1, 2], b: DDCCBBAA } Ok(()) } ```