Move binary into separate crate and tidy dependencies 🎭

2 files changed, 74 insertions, 0 deletions

diff --git a/main/Cargo.toml b/main/Cargo.toml
new file mode 100644
index 00000000..dcb75981
--- /dev/null
+++ b/main/Cargo.toml
@@ -0,0 +1,14 @@
+[package]
+name = "typstc-main"
+version = "0.1.0"
+authors = ["The Typst Project Developers"]
+edition = "2018"
+
+[dependencies]
+typstc = { path = ".." }
+fontdock = { path = "../../fontdock", features = ["fs"] }
+futures-executor = "0.3"
+
+[[bin]]
+name = "typstc-main"
+path = "main.rs"
diff --git a/main/main.rs b/main/main.rs
new file mode 100644
index 00000000..a04b163c
--- /dev/null
+++ b/main/main.rs
@@ -0,0 +1,60 @@
+use std::cell::RefCell;
+use std::error::Error;
+use std::fs::{File, read_to_string};
+use std::io::BufWriter;
+use std::path::{Path, PathBuf};
+use std::rc::Rc;
+use futures_executor::block_on;
+
+use fontdock::fs::{FsIndex, FsProvider};
+use fontdock::FontLoader;
+use typstc::Typesetter;
+use typstc::font::DynProvider;
+use typstc::export::pdf;
+
+fn main() {
+    if let Err(err) = run() {
+        eprintln!("error: {}", err);
+        std::process::exit(1);
+    }
+}
+
+fn run() -> Result<(), Box<dyn Error>> {
+    let args: Vec<String> = std::env::args().collect();
+    if args.len() < 2 || args.len() > 3 {
+        println!("Usage: typst src.typ [out.pdf]");
+        std::process::exit(0);
+    }
+
+    let source = Path::new(&args[1]);
+    let dest = if args.len() <= 2 {
+        source.with_extension("pdf")
+    } else {
+        PathBuf::from(&args[2])
+    };
+
+    if source == dest {
+        Err("source and destination path are the same")?;
+    }
+
+    let src = read_to_string(source)
+        .map_err(|_| "failed to read from source file")?;
+
+    let mut index = FsIndex::new();
+    index.search_dir("fonts");
+    index.search_os();
+
+    let (descriptors, files) = index.into_vecs();
+    let provider = FsProvider::new(files.clone());
+    let dynamic = Box::new(provider) as Box<DynProvider>;
+    let loader = FontLoader::new(dynamic, descriptors);
+    let loader = Rc::new(RefCell::new(loader));
+
+    let typesetter = Typesetter::new(loader.clone());
+    let layouts = block_on(typesetter.typeset(&src)).output;
+
+    let writer = BufWriter::new(File::create(&dest)?);
+    pdf::export(&layouts, &loader, writer)?;
+
+    Ok(())
+}