82 lines
2.3 KiB
Rust
82 lines
2.3 KiB
Rust
use std::io::Read;
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use std::str::FromStr;
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use xml::attribute::OwnedAttribute;
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use xml::reader::{EventReader, XmlEvent};
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use crate::types::*;
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use super::*;
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fn read_custom_tab_stop_type(attributes: &[OwnedAttribute]) -> Result<TabValueType, ReaderError> {
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for a in attributes {
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let local_name = &a.name.local_name;
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if local_name == "val" {
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let v = a.value.to_owned();
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if let Ok(t) = TabValueType::from_str(&v) {
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return Ok(t);
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}
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}
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}
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Err(ReaderError::TypeError(crate::TypeError::FromStrError))
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}
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fn read_custom_tab_stop_leader(
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attributes: &[OwnedAttribute],
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) -> Result<TabLeaderType, ReaderError> {
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for a in attributes {
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let local_name = &a.name.local_name;
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if local_name == "leader" {
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let v = a.value.to_owned();
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if let Ok(t) = TabLeaderType::from_str(&v) {
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return Ok(t);
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}
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}
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}
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Err(ReaderError::TypeError(crate::TypeError::FromStrError))
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}
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fn read_custom_tab_stop_pos(attributes: &[OwnedAttribute]) -> Result<f32, ReaderError> {
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for a in attributes {
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let local_name = &a.name.local_name;
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if local_name == "pos" {
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let v = a.value.to_owned();
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if let Ok(t) = f32::from_str(&v) {
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return Ok(t);
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}
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}
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}
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Err(ReaderError::TypeError(crate::TypeError::FromStrError))
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}
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impl ElementReader for Tab {
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fn read<R: Read>(
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r: &mut EventReader<R>,
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attrs: &[OwnedAttribute],
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) -> Result<Self, ReaderError> {
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let mut tab = Tab::new();
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if let Ok(t) = read_custom_tab_stop_type(attrs) {
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tab = tab.val(t);
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}
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if let Ok(pos) = read_custom_tab_stop_pos(attrs) {
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tab = tab.pos(pos as usize);
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}
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if let Ok(leader) = read_custom_tab_stop_leader(attrs) {
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tab = tab.leader(leader);
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}
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loop {
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let e = r.next();
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match e {
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Ok(XmlEvent::EndElement { name, .. }) => {
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let e = XMLElement::from_str(&name.local_name).unwrap();
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if e == XMLElement::Tab {
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return Ok(tab);
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}
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}
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Err(_) => return Err(ReaderError::XMLReadError),
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_ => {}
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}
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}
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}
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}
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