actix_codec/
bcodec.rs

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
use std::io;

use bytes::{Buf, Bytes, BytesMut};

use super::{Decoder, Encoder};

/// Bytes codec. Reads/writes chunks of bytes from a stream.
#[derive(Debug, Copy, Clone)]
pub struct BytesCodec;

impl Encoder<Bytes> for BytesCodec {
    type Error = io::Error;

    #[inline]
    fn encode(&mut self, item: Bytes, dst: &mut BytesMut) -> Result<(), Self::Error> {
        dst.extend_from_slice(item.chunk());
        Ok(())
    }
}

impl Decoder for BytesCodec {
    type Item = BytesMut;
    type Error = io::Error;

    fn decode(&mut self, src: &mut BytesMut) -> Result<Option<Self::Item>, Self::Error> {
        if src.is_empty() {
            Ok(None)
        } else {
            Ok(Some(src.split()))
        }
    }
}