protocol 0.1.6

Easy protocol definitions
Documentation 
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
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52

use {types, Type, Error, Array};
use std::io::prelude::*;
use std;

// The default implementation treats the string as a normal char array.
impl Type for std::string::String
{
    fn read(read: &mut Read) -> Result<Self, Error> {
        let bytes = Vec::<u8>::read(read)?;

        Ok(std::string::String::from_utf8(bytes)?)
    }

    fn write(&self, write: &mut Write) -> Result<(), Error> {
        let bytes: Vec<u8> = self.bytes().collect();
        bytes.write(write)
    }
}

/// A string with a custom size prefix integer type.
/// `S` - The size prefix type.
#[derive(Clone, Debug)]
pub struct String<S: types::Integer = u32>
{
    pub value: std::string::String,
    _a: std::marker::PhantomData<S>,
}

impl<S: types::Integer> String<S>
{
    pub fn new(s: std::string::String) -> Self {
        String {
            value: s,
            _a: std::marker::PhantomData,
        }
    }
}

impl<S: types::Integer> Type for String<S>
{
    fn read(read: &mut Read) -> Result<Self, Error> {
        let bytes = Array::<S, u8>::read(read)?;

        Ok(String::new(std::string::String::from_utf8(bytes.elements)?))
    }

    fn write(&self, write: &mut Write) -> Result<(), Error> {
        let array: Array<S, u8> = Array::new(self.value.bytes().collect());
        array.write(write)
    }
}