xz_rs/block/filter/
mod.rs

1use crate::{
2    decode::{Decode, DecodeError},
3    encode::Encode,
4};
5
6use super::{BlockDecodeError, VarLengthInt};
7
8#[derive(Debug, Clone)]
9pub struct Filter {
10    pub id: u64,
11    pub properties: Vec<u8>,
12}
13
14impl Encode for Filter {
15    fn encoding(&self) -> Vec<u8> {
16        let mut bytes = Vec::new();
17
18        bytes.extend_from_slice(&VarLengthInt(self.id).encoding());
19        bytes.extend_from_slice(&VarLengthInt(self.properties.len() as u64).encoding());
20        bytes.extend_from_slice(&self.properties);
21
22        bytes
23    }
24}
25
26impl Decode for Filter {
27    fn decode<R: std::io::Read>(src: &mut R) -> Result<Self, DecodeError> {
28        let err = Err(DecodeError::BlockError(BlockDecodeError::InvalidHeader));
29        let id = VarLengthInt::decode(src)?.0;
30
31        if id > 0x4000_0000_0000_0000 {
32            return err;
33        }
34
35        let properties_size = VarLengthInt::decode(src)?.0;
36
37        if properties_size > 1024 {
38            return err;
39        }
40
41        let mut properties = vec![0u8; properties_size as usize];
42        src.read_exact(&mut properties)?;
43
44        Ok(Self { id, properties })
45    }
46}
xz_rs/block/filter/mod.rs

xz_rs/block/filter/
mod.rs
