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20
Cargo.toml Normal file
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@ -0,0 +1,20 @@
[package]
name = "graphemy-typst"
version = "0.1.0"
edition = "2021"
[lib]
crate-type = ["cdylib"]
[dependencies]
graphemy = { git = "https://codeberg.org/zhuriel/graphemy", branch = 'master' }
serde = "1.0"
serde_json = "1.0.140"
wasm-minimal-protocol = "0.1.0"
[profile.release]
lto = true
strip = true
opt-level = 'z'
codegen-units = 1
panic = 'abort'

4
build.sh Executable file
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@ -0,0 +1,4 @@
#!/bin/sh
cargo build --target wasm32-unknown-unknown --release
cp target/wasm32-unknown-unknown/release/graphemy_typst.wasm typst/

50
src/lib.rs Normal file
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@ -0,0 +1,50 @@
use wasm_minimal_protocol::*;
use graphemy::*;
use std::{str::*, sync::*};
initiate_protocol!();
fn pass_err<T, E : ToString>(x: Result<T, E>) -> Result<T, String> {
match x {
Ok(v) => Ok(v),
Err(e) => Err(e.to_string())
}
}
static SCRIPT : OnceLock<SaveFile> = OnceLock::new();
const EMPTY: Vec<u8> = vec![];
fn check_init() -> Result<Vec<u8>, String> {
if SCRIPT.get().is_none() {
Err("Engine uninitialised".to_string())
} else { Ok(EMPTY) }
}
fn check_uninit() -> Result<Vec<u8>, String> {
if !SCRIPT.get().is_none() {
Err("Engine already initialised".to_string())
} else { Ok(EMPTY) }
}
#[wasm_func]
pub fn initialise(save_bytes: &[u8]) -> Result<Vec<u8>, String> {
let _ = check_uninit()?;
let save_text = pass_err(from_utf8(save_bytes))?;
let save = pass_err(SaveFile::from_str(save_text))?;
let _ = SCRIPT.set(save);
Ok(EMPTY)
}
#[wasm_func]
pub fn render(rsets_bytes: &[u8], tsets_bytes: &[u8], text_bytes: &[u8]) -> Result<Vec<u8>, String> {
let _ = check_init()?;
let rsets_json = pass_err(from_utf8(rsets_bytes))?;
let rsets : RenderSettings = pass_err(serde_json::from_str(rsets_json))?;
let tsets_json = pass_err(from_utf8(tsets_bytes))?;
let tsets : TypesetSettings = pass_err(serde_json::from_str(tsets_json))?;
let engine = pass_err(Engine::try_from(SCRIPT.get().expect("init checked").clone()))?;
let text = pass_err(from_utf8(text_bytes))?;
let svg = pass_err(engine.render(text, tsets, rsets))?;
Ok(svg.to_string().as_bytes().to_vec())
}

59
typst/graphemy.typ Normal file
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@ -0,0 +1,59 @@
#let the-plugin = {
plugin("./graphemy_typst.wasm")
}
#let load-gmy(graphemy-project) = {
let script = plugin.transition(
the-plugin.initialise,
read(encoding: none, graphemy-project)
)
(
text,
..opt-args
) => {
let opts = opt-args.named()
let scale = opts.at("scale", default: 1)
let has(dict, key) = {dict.keys().contains(key)}
let torgba(c) = color.rgb(c).components(alpha: true).map(it => int(float(it)*255))
let render= (
size:
if has(opts, "width") and has(opts, "height") {(MaxRect: (opts.width.pt(), opts.height.pt()))}
else if has(opts, "width") {(Width: opts.width.pt() / scale)}
else if has(opts, "height") {(Height: opts.height.pt() / scale)}
else {(Scale: 1.0)},
margin: opts.at("margin", default: 0.0),
comment: opts.at("comment", default: none),
color_mode: (Static: (
fg: torgba(opts.at("fg", default: color.black)),
bg: if has(opts, "bg") { torgba(opts.bg) } else { none }
)),
)
let typeset= (
area: (LineSize: opts.at("linewidth", default: opts.at("width", default: 100pt).pt() / scale)),
align: (min: "Min", max: "Max", center: "Center", justify: "Justify").at(
opts.at("align", default: "justify")
),
)
let imgopts = (:)
if has(opts, "width") {
imgopts.insert("width", opts.width)
}
if has(opts, "height") {
imgopts.insert("width", opts.height * scale)
}
let boxopts = (:)
if has(opts, "baseline") {boxopts.insert("baseline", opts.baseline)}
box(..boxopts, image(format: "svg", ..imgopts, script.render(bytes(json.encode(render)), bytes(json.encode(typeset)), bytes(text))))
}
}
#let all_options = (
width: 100pt,
hegith: 100pt,
margin: 5,
comment: "comment",
fg: color.black,
bg: color.white,
align: "justify"
)

7
typst/typst.toml Normal file
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@ -0,0 +1,7 @@
[package]
name = "graphemy"
version = "0.1.0"
entrypoint = "graphemy.typ"
authors = "Annwan"
license = " GPL-3.0-only"