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use std::fs::{self, File};
use std::io::{Write, Read, BufWriter};
use std::process::Command;
use typst::Typesetter;
use typst::toddle::query::FileSystemFontProvider;
use typst::export::pdf::PdfExporter;
use typst::doc::LayoutAction;
const CACHE_DIR: &str = "test-cache";
#[test]
fn layouting() {
fs::create_dir_all(format!("{}/serialized", CACHE_DIR)).unwrap();
fs::create_dir_all(format!("{}/rendered", CACHE_DIR)).unwrap();
fs::create_dir_all(format!("{}/pdf", CACHE_DIR)).unwrap();
for entry in fs::read_dir("tests/layouts/").unwrap() {
let path = entry.unwrap().path();
let mut file = File::open(&path).unwrap();
let mut src = String::new();
file.read_to_string(&mut src).unwrap();
let name = path
.file_stem().unwrap()
.to_str().unwrap();
test(name, &src);
}
}
/// Create a _PDF_ with a name from the source code.
fn test(name: &str, src: &str) {
let mut typesetter = Typesetter::new();
let provider = FileSystemFontProvider::from_listing("fonts/fonts.toml").unwrap();
typesetter.add_font_provider(provider.clone());
// Layout into box layout.
let tree = typesetter.parse(src).unwrap();
let layout = typesetter.layout(&tree).unwrap();
// Write the serialed layout file.
let path = format!("{}/serialized/{}.box", CACHE_DIR, name);
let mut file = File::create(path).unwrap();
// Find all used fonts and their filenames.
let mut map = Vec::new();
let mut loader = typesetter.loader().borrow_mut();
for action in &layout.actions {
if let LayoutAction::SetFont(index, _) = action {
if map.iter().find(|(i, _)| i == index).is_none() {
let (_, provider_index) = loader.get_provider_and_index(*index);
let filename = provider.get_path(provider_index).to_str().unwrap();
map.push((*index, filename));
}
}
}
drop(loader);
// Write the font mapping into the serialization file.
writeln!(file, "{}", map.len()).unwrap();
for (index, path) in map {
writeln!(file, "{} {}", index, path).unwrap();
}
layout.serialize(&mut file).unwrap();
// Render the layout into a PNG.
Command::new("python")
.arg("tests/render.py")
.arg(name)
.spawn()
.expect("failed to run python-based renderer");
// Write the PDF file.
let path = format!("{}/pdf/{}.pdf", CACHE_DIR, name);
let file = BufWriter::new(File::create(path).unwrap());
let document = layout.into_doc();
let exporter = PdfExporter::new();
exporter.export(&document, typesetter.loader(), file).unwrap();
}
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