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use std::fs;
use std::path::{Path, PathBuf};
use anyhow::{anyhow, bail, Context};
use typst::cache::Cache;
use typst::diag::Pass;
use typst::env::{Env, FsLoader};
use typst::exec::State;
use typst::library;
use typst::parse::LineMap;
use typst::pdf;
use typst::typeset;
fn main() -> anyhow::Result<()> {
let args: Vec<_> = std::env::args().collect();
if args.len() < 2 || args.len() > 3 {
println!("Usage: typst src.typ [out.pdf]");
return Ok(());
}
let src_path = Path::new(&args[1]);
let dest_path = if args.len() <= 2 {
let name = src_path
.file_name()
.ok_or_else(|| anyhow!("Source path is not a file."))?;
Path::new(name).with_extension("pdf")
} else {
PathBuf::from(&args[2])
};
if src_path == dest_path {
bail!("Source and destination path are the same.");
}
let src = fs::read_to_string(src_path).context("Failed to read from source file.")?;
let mut loader = FsLoader::new();
loader.search_path("fonts");
loader.search_system();
let mut env = Env::new(loader);
let mut cache = Cache::new();
let scope = library::new();
let state = State::default();
let Pass { output: frames, diags } =
typeset(&mut env, &mut cache, &src, &scope, state);
if !diags.is_empty() {
let map = LineMap::new(&src);
for diag in diags {
let start = map.location(diag.span.start).unwrap();
let end = map.location(diag.span.end).unwrap();
println!(
"{}: {}:{}-{}: {}",
diag.level,
src_path.display(),
start,
end,
diag.message,
);
}
}
let pdf_data = pdf::export(&env, &frames);
fs::write(&dest_path, pdf_data).context("Failed to write PDF file.")?;
Ok(())
}
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