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use std::env;
use std::error::Error;
use std::fs::File;
use std::io::{Read, BufWriter};
use std::path::{Path, PathBuf};
use std::process;
use typst::Typesetter;
use typst::export::pdf::PdfExporter;
use typst::toddle::query::FileSystemFontProvider;
fn main() {
if let Err(err) = run() {
eprintln!("error: {}", err);
process::exit(1);
}
}
/// The actual main function.
fn run() -> Result<(), Box<dyn Error>> {
let args: Vec<String> = env::args().collect();
if args.len() < 2 || args.len() > 3 {
help_and_quit();
}
let source_path = Path::new(&args[1]);
// Compute the output filename from the input filename by replacing the extension.
let dest_path = if args.len() <= 2 {
let stem = source_path.file_stem().ok_or_else(|| "missing destation file name")?;
let base = source_path.parent().ok_or_else(|| "missing destation folder")?;
base.join(format!("{}.pdf", stem.to_string_lossy()))
} else {
PathBuf::from(&args[2])
};
if dest_path == source_path {
return Err("source and destination path are the same".into());
}
let mut src = String::new();
let mut source_file = File::open(source_path).map_err(|_| "failed to open source file")?;
source_file.read_to_string(&mut src).map_err(|_| "failed to read from source file")?;
// Create a typesetter with a font provider that provides the default fonts.
let mut typesetter = Typesetter::new();
let provider = FileSystemFontProvider::from_listing("fonts/fonts.toml").unwrap();
typesetter.add_font_provider(provider);
// Typeset the source code.
let document = typesetter.typeset(&src)?;
// Export the document into a PDF file.
let exporter = PdfExporter::new();
let dest_file = File::create(&dest_path)?;
exporter.export(&document, typesetter.loader(), BufWriter::new(dest_file))?;
Ok(())
}
/// Print a usage message and quit.
fn help_and_quit() {
let name = env::args().next().unwrap_or("typst".to_string());
println!("usage: {} source [destination]", name);
process::exit(0);
}
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