use bytes::{Bytes, Buf};
use std::io::Cursor;

use ser::DnsPacketData;
use errors::*;

#[derive(Clone, Debug)]
pub struct ShortText(Bytes);

// RFC 1035 names this `<character-string>`
impl DnsPacketData for ShortText {
	fn deserialize(data: &mut Cursor<Bytes>) -> Result<Self> {
		check_enough_data!(data, 1, "ShortText length");
		let label_len = data.get_u8() as usize;
		check_enough_data!(data, label_len, "ShortText content");
		let pos = data.position() as usize;
		let text = data.get_ref().slice(pos, pos + label_len);
		data.advance(label_len);
		Ok(ShortText(text))
	}
}