docx-reader 0.1.1

use std::io::Read;
use std::str::FromStr;
use xml::reader::{EventReader, XmlEvent};

use crate::reader::{FromXML, ReaderError};

use super::*;

impl FromXML for Styles {
	fn from_xml<R: Read>(reader: R) -> Result<Self, ReaderError> {
		let mut parser = EventReader::new(reader);
		let mut styles = Self::default();
		loop {
			let e = parser.next();
			match e {
				Ok(XmlEvent::StartElement {
					attributes, name, ..
				}) => {
					let e = XMLElement::from_str(&name.local_name).unwrap();
					match e {
						XMLElement::Style => {
							if let Ok(s) = Style::read(&mut parser, &attributes) {
								styles = styles.add_style(s);
							}
							continue;
						}
						XMLElement::DocDefaults => {
							if let Ok(d) = DocDefaults::read(&mut parser, &attributes) {
								styles = styles.doc_defaults(d);
							}
							continue;
						}
						_ => {}
					}
				}
				Ok(XmlEvent::EndElement { name, .. }) => {
					let e = XMLElement::from_str(&name.local_name).unwrap();
					if let XMLElement::Styles = e {
						break;
					}
				}
				Err(_) => return Err(ReaderError::XMLReadError),
				_ => {}
			}
		}
		Ok(styles)
	}
}