ableos_userland/libraries/versioning/src/lib.rs

// ! A unified versioning system for Rust.
#![no_std]
use core::{fmt::Display, prelude::rust_2021::derive};
use serde::{Deserialize, Serialize};

pub const VERSION: Version = Version::new(0, 1, 3);

#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, Serialize, Deserialize)]
pub struct Version {
    pub major: u8,
    pub minor: u8,
    pub patch: u8,
}

impl Version {
    pub const fn new(major: u8, minor: u8, patch: u8) -> Self {
        Self {
            major,
            minor,
            patch,
        }
    }

    pub fn new_from_env(vstring: &'static str) -> Self {
        let mut spl = vstring.split(".");
        if spl.clone().count() > 3 {
            panic!("Improper version string");
        }
        // TODO: handle failing any of these
        let major: u8 = spl.nth(0).unwrap().parse().unwrap();
        let minor: u8 = spl.nth(1).unwrap().parse().unwrap();
        let patch: u8 = spl.nth(2).unwrap().parse().unwrap();

        Self {
            major,
            minor,
            patch,
        }
    }
}

impl Display for Version {
    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
        write!(f, "{}.{}.{}", self.major, self.minor, self.patch)?;
        Ok(())
    }
}