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use std::fs::{self, File};
use std::io::{BufWriter, Read, Write};
use std::process::Command;
use std::time::Instant;
use regex::{Regex, Captures};
use typst::export::pdf::PdfExporter;
use typst::layout::LayoutAction;
use typst::toddle::query::FileSystemFontProvider;
use typst::size::{Size, Size2D, SizeBox};
use typst::style::PageStyle;
use typst::Typesetter;
const CACHE_DIR: &str = "tests/cache";
fn main() {
let mut perfect_match = false;
let mut filter = Vec::new();
for arg in std::env::args().skip(1) {
if arg.as_str() == "--nocapture" {
continue;
} else if arg.as_str() == "=" {
perfect_match = true;
} else {
filter.push(arg);
}
}
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();
if path.extension() != Some(std::ffi::OsStr::new("typ")) {
continue;
}
let name = path.file_stem().unwrap().to_str().unwrap();
let matches = if perfect_match {
filter.iter().any(|pattern| name == pattern)
} else {
filter.is_empty() || filter.iter().any(|pattern| name.contains(pattern))
};
if matches {
let mut file = File::open(&path).unwrap();
let mut src = String::new();
file.read_to_string(&mut src).unwrap();
test(name, &src);
}
}
}
/// Create a _PDF_ with a name from the source code.
fn test(name: &str, src: &str) {
println!("Testing: {}", name);
let (src, size) = preprocess(src);
let mut typesetter = Typesetter::new();
let provider = FileSystemFontProvider::from_listing("fonts/fonts.toml").unwrap();
typesetter.add_font_provider(provider.clone());
if let Some(dimensions) = size {
typesetter.set_page_style(PageStyle {
dimensions,
margins: SizeBox::zero()
});
}
let start = Instant::now();
// Layout into box layout.
let tree = typesetter.parse(&src).unwrap();
let layouts = typesetter.layout(&tree).unwrap();
let end = Instant::now();
let duration = end - start;
println!(" => {:?}", duration);
println!();
// Write the serialed layout file.
let path = format!("{}/serialized/{}.lay", 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 layout in &layouts {
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();
}
layouts.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 exporter = PdfExporter::new();
exporter.export(&layouts, typesetter.loader(), file).unwrap();
}
fn preprocess<'a>(src: &'a str) -> (String, Option<Size2D>) {
let include_regex = Regex::new(r"\{include:((.|\.|\-)*)\}").unwrap();
let lorem_regex = Regex::new(r"\{lorem:(\d*)\}").unwrap();
let size_regex = Regex::new(r"\{(size:(([\d\w]*)\*([\d\w]*)))\}").unwrap();
let mut size = None;
let mut preprocessed = size_regex.replace_all(&src, |cap: &Captures| {
let width_str = cap.get(3).unwrap().as_str();
let height_str = cap.get(4).unwrap().as_str();
let width = width_str.parse::<Size>().unwrap();
let height = height_str.parse::<Size>().unwrap();
size = Some(Size2D::new(width, height));
"".to_string()
}).to_string();
let mut changed = true;
while changed {
changed = false;
preprocessed = include_regex.replace_all(&preprocessed, |cap: &Captures| {
changed = true;
let filename = cap.get(1).unwrap().as_str();
let path = format!("tests/layouts/{}", filename);
let mut file = File::open(path).unwrap();
let mut buf = String::new();
file.read_to_string(&mut buf).unwrap();
buf
}).to_string();
}
preprocessed= lorem_regex.replace_all(&preprocessed, |cap: &Captures| {
let num_str = cap.get(1).unwrap().as_str();
let num_words = num_str.parse::<usize>().unwrap();
generate_lorem(num_words)
}).to_string();
(preprocessed, size)
}
fn generate_lorem(num_words: usize) -> String {
const LOREM: [&str; 69] = [
"Lorem", "ipsum", "dolor", "sit", "amet,", "consectetur", "adipiscing", "elit.", "Etiam",
"suscipit", "porta", "pretium.", "Donec", "eu", "lorem", "hendrerit,", "scelerisque",
"lectus", "at,", "consequat", "ligula.", "Nulla", "elementum", "massa", "et", "viverra",
"consectetur.", "Donec", "blandit", "metus", "ut", "ipsum", "commodo", "congue.", "Nullam",
"auctor,", "mi", "vel", "tristique", "venenatis,", "nisl", "nunc", "tristique", "diam,",
"aliquam", "pellentesque", "lorem", "massa", "vel", "neque.", "Sed", "malesuada", "ante",
"nisi,", "sit", "amet", "auctor", "risus", "fermentum", "in.", "Sed", "blandit", "mollis",
"mi,", "non", "tristique", "nisi", "fringilla", "at."
];
let mut buf = String::new();
for i in 0 .. num_words {
buf.push_str(LOREM[i % LOREM.len()]);
buf.push(' ');
}
buf
}
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