use std::io::Read;
use std::str::FromStr;
use xml::attribute::OwnedAttribute;
use xml::reader::{EventReader, XmlEvent};
use crate::escape;
use super::*;
impl ElementReader for Comment {
fn read<R: Read>(
r: &mut EventReader<R>,
attrs: &[OwnedAttribute],
) -> Result<Self, ReaderError> {
let id = usize::from_str(&read(attrs, "id").expect("should comment id exists."))?;
let mut comment = Comment::new(id);
if let Some(author) = read(attrs, "author") {
comment = comment.author(escape::escape(author.as_str()));
};
if let Some(date) = read(attrs, "date") {
comment = comment.date(date);
}
loop {
let e = r.next();
match e {
Ok(XmlEvent::StartElement {
name, attributes, ..
}) => {
let e = XMLElement::from_str(&name.local_name)
.expect("should convert to XMLElement");
if let XMLElement::Paragraph = e {
let p = Paragraph::read(r, &attributes)?;
comment = comment.add_paragraph(p);
}
}
Ok(XmlEvent::EndElement { name, .. }) => {
let e = XMLElement::from_str(&name.local_name).unwrap();
if e == XMLElement::Comment {
return Ok(comment);
}
}
Err(_) => return Err(ReaderError::XMLReadError),
_ => {}
}
}
}
}