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/*
wearechat - generic multiplayer game with voip
Copyright (C) 2025 metamuffin
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, version 3 of the License only.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
use crate::packets::{Data, Object, Resource};
use anyhow::Result;
use glam::{Affine3A, Vec2, Vec3, Vec3A};
use std::{
borrow::Cow,
io::{Read, Write},
marker::PhantomData,
};
pub trait ReadWrite: Sized {
fn write(&self, w: &mut dyn Write) -> Result<()>;
fn read(r: &mut dyn Read) -> Result<Self>;
fn write_alloc<'a>(&'a self) -> Cow<'a, [u8]> {
let mut buf = Vec::new();
self.write(&mut buf).unwrap();
Cow::Owned(buf)
}
}
impl ReadWrite for f32 {
fn write(&self, w: &mut dyn Write) -> Result<()> {
w.write_all(&self.to_be_bytes())?;
Ok(())
}
fn read(r: &mut dyn Read) -> Result<Self> {
let mut buf = [0; { size_of::<f32>() }];
r.read_exact(&mut buf)?;
Ok(f32::from_be_bytes(buf))
}
}
impl ReadWrite for u32 {
fn write(&self, w: &mut dyn Write) -> Result<()> {
w.write_all(&self.to_be_bytes())?;
Ok(())
}
fn read(r: &mut dyn Read) -> Result<Self> {
let mut buf = [0; { size_of::<u32>() }];
r.read_exact(&mut buf)?;
Ok(u32::from_be_bytes(buf))
}
}
impl ReadWrite for Vec<u8> {
fn write(&self, w: &mut dyn Write) -> Result<()> {
w.write_all(&self)?;
Ok(())
}
fn read(r: &mut dyn Read) -> Result<Self> {
let mut buf = Vec::new();
r.read_to_end(&mut buf)?;
Ok(buf)
}
}
impl<'a> ReadWrite for Cow<'a, [u8]> {
fn write(&self, w: &mut dyn Write) -> Result<()> {
w.write_all(&self)?;
Ok(())
}
fn read(r: &mut dyn Read) -> Result<Self> {
let mut buf = Vec::new();
r.read_to_end(&mut buf)?;
Ok(Cow::Owned(buf))
}
fn write_alloc<'b>(&'b self) -> Cow<'b, [u8]> {
match self {
Cow::Borrowed(x) => Cow::Borrowed(x),
Cow::Owned(x) => Cow::Borrowed(&x),
}
}
}
impl ReadWrite for Vec<Vec3A> {
fn write(&self, w: &mut dyn Write) -> Result<()> {
for e in self {
e.write(w)?;
}
Ok(())
}
fn read(r: &mut dyn Read) -> Result<Self> {
let mut buf = Vec::new();
r.read_to_end(&mut buf)?;
Ok(buf
.into_iter()
.array_chunks::<{ size_of::<f32>() }>()
.map(f32::from_be_bytes)
.array_chunks::<3>()
.map(Vec3A::from_array)
.collect())
}
}
impl ReadWrite for Vec<Vec3> {
fn write(&self, w: &mut dyn Write) -> Result<()> {
for e in self {
e.write(w)?;
}
Ok(())
}
fn read(r: &mut dyn Read) -> Result<Self> {
let mut buf = Vec::new();
r.read_to_end(&mut buf)?;
Ok(buf
.into_iter()
.array_chunks::<{ size_of::<f32>() }>()
.map(f32::from_be_bytes)
.array_chunks::<3>()
.map(Vec3::from_array)
.collect())
}
}
impl ReadWrite for Vec<Vec2> {
fn write(&self, w: &mut dyn Write) -> Result<()> {
for e in self {
e.write(w)?;
}
Ok(())
}
fn read(r: &mut dyn Read) -> Result<Self> {
let mut buf = Vec::new();
r.read_to_end(&mut buf)?;
Ok(buf
.into_iter()
.array_chunks::<{ size_of::<f32>() }>()
.map(f32::from_be_bytes)
.array_chunks::<2>()
.map(Vec2::from_array)
.collect())
}
}
impl ReadWrite for Vec<[u32; 3]> {
fn write(&self, w: &mut dyn Write) -> Result<()> {
for e in self {
w.write_all(&e[0].to_be_bytes())?;
w.write_all(&e[1].to_be_bytes())?;
w.write_all(&e[2].to_be_bytes())?;
}
Ok(())
}
fn read(r: &mut dyn Read) -> Result<Self> {
let mut buf = Vec::new();
r.read_to_end(&mut buf)?;
Ok(buf
.into_iter()
.array_chunks::<{ size_of::<u32>() }>()
.map(u32::from_be_bytes)
.array_chunks::<3>()
.collect())
}
}
impl ReadWrite for Vec<f32> {
fn write(&self, w: &mut dyn Write) -> Result<()> {
for e in self {
e.write(w)?;
}
Ok(())
}
fn read(r: &mut dyn Read) -> Result<Self> {
let mut buf = Vec::new();
r.read_to_end(&mut buf)?;
Ok(buf
.into_iter()
.array_chunks::<{ size_of::<f32>() }>()
.map(f32::from_be_bytes)
.collect())
}
}
impl ReadWrite for String {
fn write(&self, w: &mut dyn Write) -> Result<()> {
w.write_all(self.as_bytes())?;
Ok(())
}
fn read(r: &mut dyn Read) -> Result<Self> {
let mut buf = Vec::new();
r.read_to_end(&mut buf)?;
Ok(String::from_utf8(buf)?)
}
}
impl ReadWrite for Data {
fn write(&self, w: &mut dyn Write) -> Result<()> {
w.write_all(&(self.0.len() as u32).to_be_bytes())?;
w.write_all(&self.0)?;
Ok(())
}
fn read(r: &mut dyn Read) -> Result<Self> {
let mut size = [0; { size_of::<u32>() }];
r.read_exact(&mut size)?;
let size = u32::from_be_bytes(size);
let mut buf = vec![0; size as usize];
r.read_exact(&mut buf)?;
Ok(Self(buf))
}
}
impl<T> ReadWrite for Resource<T> {
fn write(&self, w: &mut dyn Write) -> Result<()> {
w.write_all(&self.0)?;
Ok(())
}
fn read(r: &mut dyn Read) -> Result<Self> {
let mut s = Self([0; 32], PhantomData);
r.read_exact(&mut s.0)?;
Ok(s)
}
}
impl ReadWrite for Object {
fn write(&self, w: &mut dyn Write) -> Result<()> {
w.write_all(&self.0.to_be_bytes())?;
Ok(())
}
fn read(r: &mut dyn Read) -> Result<Self> {
let mut s = [0; 16];
r.read_exact(&mut s)?;
Ok(Object(u128::from_be_bytes(s)))
}
}
impl<T: ReadWrite, const N: usize> ReadWrite for [T; N] {
fn write(&self, w: &mut dyn Write) -> Result<()> {
for e in self {
e.write(w)?;
}
Ok(())
}
fn read(r: &mut dyn Read) -> Result<Self> {
[(); N].try_map(|()| T::read(r))
}
}
impl ReadWrite for () {
fn write(&self, _w: &mut dyn Write) -> Result<()> {
Ok(())
}
fn read(_r: &mut dyn Read) -> Result<Self> {
Ok(())
}
}
impl ReadWrite for Vec2 {
fn write(&self, w: &mut dyn Write) -> Result<()> {
self.x.write(w)?;
self.y.write(w)?;
Ok(())
}
fn read(r: &mut dyn Read) -> Result<Self> {
Ok(Self::new(f32::read(r)?, f32::read(r)?))
}
}
impl ReadWrite for Vec3A {
fn write(&self, w: &mut dyn Write) -> Result<()> {
self.x.write(w)?;
self.y.write(w)?;
self.z.write(w)?;
Ok(())
}
fn read(r: &mut dyn Read) -> Result<Self> {
Ok(Self::new(f32::read(r)?, f32::read(r)?, f32::read(r)?))
}
}
impl ReadWrite for Vec3 {
fn write(&self, w: &mut dyn Write) -> Result<()> {
self.x.write(w)?;
self.y.write(w)?;
self.z.write(w)?;
Ok(())
}
fn read(r: &mut dyn Read) -> Result<Self> {
Ok(Self::new(f32::read(r)?, f32::read(r)?, f32::read(r)?))
}
}
impl ReadWrite for Affine3A {
fn write(&self, w: &mut dyn Write) -> Result<()> {
for v in self.to_cols_array() {
v.write(w)?
}
Ok(())
}
fn read(r: &mut dyn Read) -> Result<Self> {
Ok(Self::from_cols_array(&[(); 12].try_map(|()| f32::read(r))?))
}
}
impl<A: ReadWrite, B: ReadWrite> ReadWrite for (A, B) {
fn write(&self, w: &mut dyn Write) -> Result<()> {
self.0.write(w)?;
self.1.write(w)?;
Ok(())
}
fn read(r: &mut dyn Read) -> Result<Self> {
Ok((A::read(r)?, B::read(r)?))
}
}
impl<A: ReadWrite, B: ReadWrite, C: ReadWrite> ReadWrite for (A, B, C) {
fn write(&self, w: &mut dyn Write) -> Result<()> {
self.0.write(w)?;
self.1.write(w)?;
self.2.write(w)?;
Ok(())
}
fn read(r: &mut dyn Read) -> Result<Self> {
Ok((A::read(r)?, B::read(r)?, C::read(r)?))
}
}
impl ReadWrite for u8 {
fn write(&self, w: &mut dyn Write) -> Result<()> {
w.write_all(&[*self])?;
Ok(())
}
fn read(r: &mut dyn Read) -> Result<Self> {
let mut buf = [0u8; 1];
r.read_exact(&mut buf)?;
Ok(buf[0])
}
}
|
