mqtt/control/variable_header/
topic_name.rs

1use std::io::{self, Read, Write};
2
3use crate::control::variable_header::VariableHeaderError;
4use crate::topic_name::TopicName;
5use crate::{Decodable, Encodable};
6
7/// Topic name wrapper
8#[derive(Debug, Eq, PartialEq, Clone)]
9pub struct TopicNameHeader(TopicName);
10
11impl TopicNameHeader {
12    pub fn new(topic_name: String) -> Result<TopicNameHeader, VariableHeaderError> {
13        match TopicName::new(topic_name) {
14            Ok(h) => Ok(TopicNameHeader(h)),
15            Err(err) => Err(VariableHeaderError::TopicNameError(err)),
16        }
17    }
18}
19
20impl From<TopicNameHeader> for TopicName {
21    fn from(hdr: TopicNameHeader) -> Self {
22        hdr.0
23    }
24}
25
26impl Encodable for TopicNameHeader {
27    fn encode<W: Write>(&self, writer: &mut W) -> Result<(), io::Error> {
28        (&self.0[..]).encode(writer)
29    }
30
31    fn encoded_length(&self) -> u32 {
32        (&self.0[..]).encoded_length()
33    }
34}
35
36impl Decodable for TopicNameHeader {
37    type Error = VariableHeaderError;
38    type Cond = ();
39
40    fn decode_with<R: Read>(reader: &mut R, _rest: ()) -> Result<TopicNameHeader, VariableHeaderError> {
41        TopicNameHeader::new(Decodable::decode(reader)?)
42    }
43}
mqtt/control/variable_header/topic_name.rs

mqtt/control/variable_header/
topic_name.rs
