62 lines
1.9 KiB
Rust
62 lines
1.9 KiB
Rust
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use super::{Font, FontMatches};
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pub struct FontSystem<'a> {
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fonts: Vec<Font<'a>>,
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}
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impl<'a> FontSystem<'a> {
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pub fn new() -> Self {
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Self {
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fonts: Vec::new(),
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}
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}
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pub fn add(&mut self, font: Font<'a>) {
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self.fonts.push(font);
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}
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pub fn matches(&'a self, patterns: &[&str]) -> Option<FontMatches<'a>> {
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let mut fonts = Vec::new();
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for font in self.fonts.iter() {
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for rec in font.rustybuzz.names() {
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if rec.name_id == 4 && rec.is_unicode() {
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let mut words: Vec<u16> = Vec::new();
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let mut i = 0;
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while i + 1 < rec.name.len() {
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words.push(
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(rec.name[i + 1] as u16) |
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((rec.name[i] as u16) << 8)
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);
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i += 2;
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}
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match String::from_utf16(&words) {
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Ok(name) => {
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let mut matched = false;
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for pattern in patterns.iter() {
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println!("Matching font name '{}' with pattern '{}'", name, pattern);
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if name.contains(pattern) {
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matched = true;
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}
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}
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if matched {
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println!("Matched font name '{}'", name);
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fonts.push(font);
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} else {
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println!("Did not match font name '{}'", name);
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}
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},
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Err(_) => ()
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}
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}
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}
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}
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if ! fonts.is_empty() {
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Some(FontMatches { fonts })
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} else {
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None
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}
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}
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}
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