hex-display

An implementation of Display on a wrapper for &[u8] which provides a hex string or hexdump (see [Hex] and [HexDisplayExt]). This crate also works in no_std environments.

If alloc is present, it can also convert either output mode to a string.

Example usage

use hex_display::HexDisplayExt;

assert_eq!(
    format!("{}", [0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef].hex()),
    "0123456789abcdef"
);
#[cfg(feature = "alloc")]
assert_eq!(
    [0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef].to_hex_string(),
    "0123456789abcdef"
);
#[cfg(feature = "alloc")]
assert_eq!(
    [0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef].to_hex_dump(),
    "00000000  01 23 45 67 89 ab cd ef                           |.#Eg....|",
);

Minimum Supported Rust Version

The MSRV is as defined in the Cargo.toml file. It may increase in minor versions, but will always remain at least a year ago.

Comparison with other crates

• hex requires you allocate enough space for the entire string in memory, either by giving it a long enough slice or a dynamic memory allocator, and only gives hex strings, not hexdumps. It also provides decoding from a hex string.
• faster_hex and hex_simd present similar APIs but provide SIMD-accelerated methods if you need maximal performance.
• data_encoding can use a [core::fmt::Display] implementation to construct without preallocating, but doesn't implement hexdumps.