rust-nex/rnex-core/src/rmc/structures/string.rs

48 lines
1.4 KiB
Rust

use std::io::{Read, Write};
use bytemuck::bytes_of;
use log::error;
use v_byte_helpers::{IS_BIG_ENDIAN, ReadExtensions};
use super::{Result, RmcSerialize};
impl RmcSerialize for String{
fn deserialize(reader: &mut impl Read) -> Result<Self> {
let len: u16 = reader.read_struct(IS_BIG_ENDIAN)?;
if len == 0{
return Ok("".to_string());
}
let mut data = vec![0; len as usize];
reader.read_exact(&mut data)?;
if *data.last().unwrap() != 0{
error!("unable to find null terminator... continuing anyways");
}
data.pop();
Ok(String::from_utf8(data)?)
}
fn serialize(&self, writer: &mut impl Write) -> Result<()> {
(&self[..]).serialize(writer)
}
fn serialize_write_size(&self) -> Result<u32> {
(&self[..]).serialize_write_size()
}
}
impl RmcSerialize for &str{
fn deserialize(_reader: &mut impl Read) -> Result<Self> {
panic!("cannot serialize to &str")
}
fn serialize(&self, writer: &mut impl Write) -> Result<()> {
let u16_len: u16 = (self.len() + 1) as u16;
writer.write_all(bytes_of(&u16_len))?;
writer.write_all(self.as_bytes())?;
writer.write_all(&[0])?;
Ok(())
}
#[inline(always)]
fn serialize_write_size(&self) -> Result<u32> {
Ok(2 + self.as_bytes().len() as u32 + 1)
}
}