deku_naivetime.rs

use chrono::NaiveDateTime;
use deku::{
    bitvec::{BitSlice, BitVec, BitView, Msb0},
    prelude::*,
};

#[derive(Debug)]
pub struct TimeT(NaiveDateTime);

impl<'a> DekuRead<'a> for TimeT {
    fn read(
        input: &'a BitSlice<Msb0, u8>,
        _ctx: (),
    ) -> Result<(&'a BitSlice<Msb0, u8>, Self), DekuError>
    where
        Self: Sized,
    {
        let (rest, time) = u32::read(input, ()).map_err(|e| DekuError::from(e))?;
        let time = Local.from_utc_datetime(&NaiveDateTime::from_timestamp(time as i64, 0));
        Ok((rest, TimeT(time)))
    }
}

impl<'a> DekuWrite for TimeT {
    fn write(&self, output: &mut BitVec<Msb0, u8>, _ctx: ()) -> Result<(), DekuError> {
        Ok(BitVec::extend(
            output,
            (self.0.timestamp() as u32)
                .to_le_bytes()
                .view_bits::<Msb0>(),
        ))
    }
}