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improve font stripping

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This commit is contained in:
Simon Gardling 2022-05-17 17:37:02 -04:00
parent 4aa078d9a9
commit 219bf54cdd
1 changed files with 44 additions and 36 deletions
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80
build.rs
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@ -15,6 +15,43 @@ use run_script::ScriptOptions;
include!(concat!(env!("CARGO_MANIFEST_DIR"), "/src/data.rs"));
fn font_stripper(from: &str, out: &str, unicodes: &[&str]) -> Result<Vec<u8>, String> {
let new_path = [&env::var("OUT_DIR").unwrap(), out].concat();
let unicodes_formatted = unicodes
.iter()
.map(|u| format!("U+{}", u))
.collect::<Vec<String>>()
.join(",");
let script_result = run_script::run(
&format!(
"
pyftsubset {}/assets/{} --unicodes={}
mv {}/assets/{} {}
",
env!("CARGO_MANIFEST_DIR"),
from,
unicodes_formatted,
env!("CARGO_MANIFEST_DIR"),
from.replace(".ttf", ".subset.ttf"),
new_path
),
&(vec![]),
&ScriptOptions::new(),
);
if let Ok((_, _, error)) = script_result {
if error.is_empty() {
return Ok(std::fs::read(new_path).unwrap());
} else {
return Err(error);
}
} else if let Err(error) = script_result {
return Err(error.to_string());
}
unreachable!()
}
fn main() {
// rebuild if new commit or contents of `assets` folder changed
println!("cargo:rerun-if-changed=.git/logs/HEAD");
@ -24,40 +61,6 @@ fn main() {
// let font_hack = FontData::from_static(include_bytes!("assets/Hack-Regular.ttf"));
let font_ubuntu_light = FontData::from_static(include_bytes!("assets/Ubuntu-Light.ttf"));
let new_noto_path = [&env::var("OUT_DIR").unwrap(), "/noto-emoji.ttf"].concat();
let new_emoji_icon_path = [&env::var("OUT_DIR").unwrap(), "/emoji-icon.ttf"].concat();
let (_code, _output, error) = run_script::run(
&format!(
"
pyftsubset {}/assets/NotoEmoji-Regular.ttf --unicodes=U+1F31E,U+1F319,U+2716
mv {}/assets/NotoEmoji-Regular.subset.ttf {}
",
env!("CARGO_MANIFEST_DIR"),
env!("CARGO_MANIFEST_DIR"),
new_noto_path
),
&(vec![]),
&ScriptOptions::new(),
)
.unwrap();
assert_eq!(error, String::new());
let (_code, _output, error) = run_script::run(
&format!(
"
pyftsubset {}/assets/emoji-icon-font.ttf --unicodes=U+2699
mv {}/assets/emoji-icon-font.subset.ttf {}
",
env!("CARGO_MANIFEST_DIR"),
env!("CARGO_MANIFEST_DIR"),
new_emoji_icon_path
),
&(vec![]),
&ScriptOptions::new(),
)
.unwrap();
assert_eq!(error, String::new());
let fonts = FontDefinitions {
font_data: BTreeMap::from([
@ -66,13 +69,18 @@ fn main() {
(
"NotoEmoji-Regular".to_owned(),
FontData::from_owned(
std::fs::read(new_noto_path).expect("unable to read noto emoji font"),
font_stripper(
"NotoEmoji-Regular.ttf",
"noto-emoji.ttf",
&["1F31E", "1F319", "2716"],
)
.unwrap(),
),
),
(
"emoji-icon-font".to_owned(),
FontData::from_owned(
std::fs::read(new_emoji_icon_path).expect("unable to read emoji icon font"),
font_stripper("emoji-icon-font.ttf", "emoji-icon.ttf", &["2699"]).unwrap(),
)
.tweak(FontTweak {
scale: 0.8,