docx_reader/reader/
font_group.rs

1use std::io::Read;
2use std::str::FromStr;
3use xml::attribute::OwnedAttribute;
4use xml::reader::{EventReader, XmlEvent};
5
6use super::*;
7
8fn read_typeface(attributes: &[OwnedAttribute]) -> Option<String> {
9	for a in attributes {
10		let local_name = &a.name.local_name;
11		if let "typeface" = local_name.as_str() {
12			return Some(a.value.to_string());
13		}
14	}
15	None
16}
17
18fn read_script_and_typeface(attributes: &[OwnedAttribute]) -> Option<(String, String)> {
19	let mut script = None;
20	let mut typeface = None;
21	for a in attributes {
22		let local_name = &a.name.local_name;
23		if let "script" = local_name.as_str() {
24			script = Some(a.value.to_string());
25		}
26		if let "typeface" = local_name.as_str() {
27			typeface = Some(a.value.to_string());
28		}
29	}
30	if let (Some(script), Some(typeface)) = (script, typeface) {
31		return Some((script, typeface));
32	}
33	None
34}
35
36impl ElementReader for FontGroup {
37	fn read<R: Read>(
38		r: &mut EventReader<R>,
39		_attrs: &[OwnedAttribute],
40	) -> Result<Self, ReaderError> {
41		let mut f = FontGroup::default();
42		loop {
43			let e = r.next();
44			match e {
45				Ok(XmlEvent::StartElement {
46					attributes, name, ..
47				}) => {
48					let e = AXMLElement::from_str(&name.local_name).unwrap();
49					match e {
50						AXMLElement::Latin => {
51							if let Some(t) = read_typeface(&attributes) {
52								f.latin = t;
53							}
54						}
55						AXMLElement::Ea => {
56							if let Some(t) = read_typeface(&attributes) {
57								f.ea = t;
58							}
59						}
60						AXMLElement::Cs => {
61							if let Some(t) = read_typeface(&attributes) {
62								f.cs = t;
63							}
64						}
65						AXMLElement::Font => {
66							if let Some((script, typeface)) = read_script_and_typeface(&attributes)
67							{
68								f.fonts.push(FontSchemeFont { script, typeface })
69							}
70						}
71						_ => {}
72					}
73				}
74				Ok(XmlEvent::EndElement { name, .. }) => {
75					let e = AXMLElement::from_str(&name.local_name).unwrap();
76					match e {
77						AXMLElement::MajorFont | AXMLElement::MinorFont => {
78							return Ok(f);
79						}
80						_ => {}
81					}
82				}
83				Err(_) => return Err(ReaderError::XMLReadError),
84				_ => {}
85			}
86		}
87	}
88}
docx_reader/reader/font_group.rs

docx_reader/reader/
font_group.rs
