hex_str

Handle and parse hex strings of constant and variable lengths

Example:

Example hex string, an md5 of an empty file:

d41d8cd98f00b204e9800998ecf8427e

use hex_str::HexString;

let s = "d41d8cd98f00b204e9800998ecf8427e";

// constant length, encoded in the type system
let u = HexStringN::<16>::try_parse(s).unwrap();
assert_eq!(u, "d41d8cd98f00b204e9800998ecf8427e");

// variable length
let v = HexString::try_parse(s).unwrap();
assert_eq!(v, "d41d8cd98f00b204e9800998ecf8427e");

Feature flags:

• serde - adds the ability to serialize, and deserialize HexString's, and HexStringN's using serde.
• rand - adds implementation of rand's Standard distribution, which enables random generation of HexStringN's directly.

Using serde feature:

use hex_str::HexString;
use serde::{Deserialize, Serialize};

#[derive(Deserialize, Serialize)]
struct Example {
    md5: HexString<16>,
}

let s = r#"
    {
        "md5": "d41d8cd98f00b204e9800998ecf8427e"
    }
"#;

let example: Example = serde_json::from_str(s).unwrap();
assert_eq!(example.md5, "d41d8cd98f00b204e9800998ecf8427e");

serde_json::to_string(&example).unwrap();

Using rand feature:

use hex_str::HexString;

let _: HexString<16> = rand::random();