92 lines
3.0 KiB
Rust
92 lines
3.0 KiB
Rust
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#![allow(clippy::single_match)]
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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 super::*;
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fn read_typeface(attributes: &[OwnedAttribute]) -> Option<String> {
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for a in attributes {
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let local_name = &a.name.local_name;
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if let "typeface" = local_name.as_str() {
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return Some(a.value.to_string());
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}
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}
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None
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}
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fn read_script_and_typeface(attributes: &[OwnedAttribute]) -> Option<(String, String)> {
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let mut script = None;
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let mut typeface = None;
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for a in attributes {
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let local_name = &a.name.local_name;
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if let "script" = local_name.as_str() {
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script = Some(a.value.to_string());
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}
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if let "typeface" = local_name.as_str() {
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typeface = Some(a.value.to_string());
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}
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}
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if let (Some(script), Some(typeface)) = (script, typeface) {
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return Some((script, typeface));
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}
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None
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}
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impl ElementReader for FontGroup {
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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 f = FontGroup::default();
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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::StartElement {
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attributes, name, ..
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}) => {
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let e = AXMLElement::from_str(&name.local_name).unwrap();
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match e {
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AXMLElement::Latin => {
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if let Some(t) = read_typeface(&attributes) {
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f.latin = t;
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}
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}
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AXMLElement::Ea => {
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if let Some(t) = read_typeface(&attributes) {
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f.ea = t;
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}
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}
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AXMLElement::Cs => {
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if let Some(t) = read_typeface(&attributes) {
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f.cs = t;
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}
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}
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AXMLElement::Font => {
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if let Some((script, typeface)) = read_script_and_typeface(&attributes)
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{
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f.fonts.push(FontSchemeFont { script, typeface })
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}
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}
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_ => {}
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}
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}
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Ok(XmlEvent::EndElement { name, .. }) => {
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let e = AXMLElement::from_str(&name.local_name).unwrap();
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match e {
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AXMLElement::MajorFont | AXMLElement::MinorFont => {
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return Ok(f);
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}
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_ => {}
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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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