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extern crate byteorder;
use std::convert::TryInto;
use std::result::Result;
use std::vec::Vec;
use failure::Error;
use log::trace;
use crate::{Deserialize, 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>, Error> {
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), Error> {
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));
}
}
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