docx-reader 0.1.1

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

use crate::types::*;

use super::*;

fn read_custom_tab_stop_type(attributes: &[OwnedAttribute]) -> Result<TabValueType, ReaderError> {
	for a in attributes {
		let local_name = &a.name.local_name;
		if local_name == "val" {
			let v = a.value.to_owned();
			if let Ok(t) = TabValueType::from_str(&v) {
				return Ok(t);
			}
		}
	}
	Err(ReaderError::TypeError(crate::TypeError::FromStrError))
}

fn read_custom_tab_stop_leader(
	attributes: &[OwnedAttribute],
) -> Result<TabLeaderType, ReaderError> {
	for a in attributes {
		let local_name = &a.name.local_name;
		if local_name == "leader" {
			let v = a.value.to_owned();
			if let Ok(t) = TabLeaderType::from_str(&v) {
				return Ok(t);
			}
		}
	}
	Err(ReaderError::TypeError(crate::TypeError::FromStrError))
}

fn read_custom_tab_stop_pos(attributes: &[OwnedAttribute]) -> Result<f32, ReaderError> {
	for a in attributes {
		let local_name = &a.name.local_name;
		if local_name == "pos" {
			let v = a.value.to_owned();
			if let Ok(t) = f32::from_str(&v) {
				return Ok(t);
			}
		}
	}
	Err(ReaderError::TypeError(crate::TypeError::FromStrError))
}

impl ElementReader for Tab {
	fn read<R: Read>(
		r: &mut EventReader<R>,
		attrs: &[OwnedAttribute],
	) -> Result<Self, ReaderError> {
		let mut tab = Tab::new();
		if let Ok(t) = read_custom_tab_stop_type(attrs) {
			tab = tab.val(t);
		}
		if let Ok(pos) = read_custom_tab_stop_pos(attrs) {
			tab = tab.pos(pos as usize);
		}
		if let Ok(leader) = read_custom_tab_stop_leader(attrs) {
			tab = tab.leader(leader);
		}
		loop {
			let e = r.next();
			match e {
				Ok(XmlEvent::EndElement { name, .. }) => {
					let e = XMLElement::from_str(&name.local_name).unwrap();
					if e == XMLElement::Tab {
						return Ok(tab);
					}
				}
				Err(_) => return Err(ReaderError::XMLReadError),
				_ => {}
			}
		}
	}
}