altv_internal_mvalue 16.4.3

An internal crate for alt:V module. Not intended for direct use.
Documentation 
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pub trait BytesNum<const S: usize> {
  fn from_le_bytes(bytes: [u8; S]) -> Self;
  fn to_le_bytes(self) -> [u8; S];
}

impl BytesNum<4> for f32 {
  fn from_le_bytes(bytes: [u8; 4]) -> Self {
    f32::from_le_bytes(bytes)
  }

  fn to_le_bytes(self) -> [u8; 4] {
    self.to_le_bytes()
  }
}

impl BytesNum<1> for u8 {
  fn from_le_bytes(bytes: [u8; 1]) -> Self {
    u8::from_le_bytes(bytes)
  }

  fn to_le_bytes(self) -> [u8; 1] {
    self.to_le_bytes()
  }
}

pub fn to_byte_buf<const N: usize, const S: usize, T: BytesNum<S>>(array: [T; N]) -> Vec<u8> {
  let mut buf = Vec::<u8>::with_capacity(std::mem::size_of::<T>() * array.len());
  for v in array {
    buf.extend(v.to_le_bytes())
  }
  buf
}

pub fn from_byte_buf<T, const S: usize, const N: usize>(buf: &[u8]) -> Option<[T; N]>
where
  T: BytesNum<S> + Default + Copy,
{
  let mut array: [T; N] = [Default::default(); N];
  let num_size = std::mem::size_of::<T>();

  for (idx, e) in array.iter_mut().enumerate() {
    let slice = buf.get((idx * num_size)..((1 + idx) * num_size))?;
    let result = slice.try_into();

    match result {
      Ok(v) => {
        *e = T::from_le_bytes(v);
      }
      Err(e) => {
        logger::error!("Failed to convert slice to static array, error: {e:?}");
        return None;
      }
    }
  }

  Some(array)
}