Added functions from a private repo I've been working on

This commit is contained in:
Louis Hollingworth 2024-05-16 12:35:59 +01:00
parent c27ee83cec
commit 5b90b7bb95
Signed by: lucxjo
GPG key ID: A11415CB3DC7809B
3 changed files with 208 additions and 11 deletions

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pub fn add(left: usize, right: usize) -> usize { const BYTE_LENGTH: usize = 20;
left + right
pub type Bytes = [u8; BYTE_LENGTH];
#[derive(Clone, Copy, PartialEq, PartialOrd, Ord, Hash, Eq)]
pub struct SUID(Bytes);
impl SUID {
/// Generates an SUID using SystemTime and a random string.
/// The total length of the byte array will be 20.
pub fn new() -> Self {
use rand::distributions::{Alphanumeric, DistString};
let time = std::time::SystemTime::now()
.duration_since(std::time::UNIX_EPOCH)
.unwrap()
.as_micros();
let mut bytes: Bytes = [0; BYTE_LENGTH];
let b_string = format!(
"{}{}",
time,
Alphanumeric.sample_string(&mut rand::thread_rng(), 4)
);
let b = b_string.as_bytes();
if b.len() != BYTE_LENGTH {
tracing::error!("Byte length wrong. Length = {}", b.len());
} }
#[cfg(test)] bytes.copy_from_slice(b);
mod tests { Self(bytes)
use super::*; }
/// Parses an SUID as hex.
/// Use as_string instead.
pub fn parse(self) -> String {
format!("{:02x?}", self.0)
}
#[test] /// Returns an SUID as a hexadecimal string.
fn it_works() { pub fn as_string(self) -> String {
let result = add(2, 2); let mut string = "".to_string();
assert_eq!(result, 4);
for v in self.0 {
string = format!("{}{:02x?}", string, v);
}
return string;
} }
} }