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extern crate byteorder;
use std::result::Result;
use std::vec::Vec;
use log::trace;
use crate::{deserialize::*, error::ProtocolError, serialize::*};
/// StringList are represented as a Vec of Strings
///
/// StringLists are serialized as an i32 of the amount of elements and then each element as a String
pub type StringList = Vec<String>;
impl Serialize for StringList {
fn serialize(&self) -> Result<Vec<u8>, ProtocolError> {
let len: i32 = self.len().try_into()?;
let mut res: Vec<u8> = Vec::new();
res.extend(len.to_be_bytes().iter());
for x in self {
res.extend(x.serialize()?);
}
return Ok(res);
}
}
impl Deserialize for StringList {
fn parse(b: &[u8]) -> Result<(usize, Self), ProtocolError> {
let (_, len) = i32::parse(&b[0..4])?;
trace!(target: "primitive::StringList", "Parsing with length: {:?}, from bytes: {:x?}", len, &b[0..4]);
let mut res: StringList = StringList::new();
let mut pos = 4;
if len > 0 {
for _ in 0..len {
let (lpos, val) = String::parse(&b[pos..])?;
pos += lpos;
res.push(val);
}
}
return Ok((pos, res));
}
}
#[test]
pub fn string_list_serialize() {
let mut test_list = StringList::new();
test_list.push("Configured".to_string());
assert_eq!(
test_list.serialize().unwrap(),
[
0, 0, 0, 1, 0, 0, 0, 20, 0, 67, 0, 111, 0, 110, 0, 102, 0, 105, 0, 103, 0, 117, 0, 114, 0, 101,
0, 100
]
)
}
#[test]
pub fn string_list_deserialize() {
let test_bytes: &[u8] = &[
0, 0, 0, 1, 0, 0, 0, 20, 0, 67, 0, 111, 0, 110, 0, 102, 0, 105, 0, 103, 0, 117, 0, 114, 0, 101, 0,
100, 0, 0, 0, 1,
];
let mut test_list = StringList::new();
test_list.push("Configured".to_string());
let (len, res) = StringList::parse(test_bytes).unwrap();
assert_eq!(len, 28);
assert_eq!(test_list, res);
}
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