drying ethcore

ipc/codegen/src/lib.rs

@@ -132,3 +132,21 @@ pub fn derive_ipc(src_path: &str) -> Result<(), Error> {
 
 	Ok(())
 }
+
+pub fn derive_binary(src_path: &str) -> Result<(), Error> {
+	use std::env;
+	use std::path::{Path, PathBuf};
+
+	let out_dir = env::var_os("OUT_DIR").unwrap();
+	let file_name = try!(PathBuf::from(src_path).file_name().ok_or(Error::InvalidFileName).map(|val| val.to_str().unwrap().to_owned()));
+	let final_path = Path::new(&out_dir).join(&file_name);
+
+	let mut registry = syntex::Registry::new();
+	register(&mut registry);
+	if let Err(_) = registry.expand("", &Path::new(src_path), &final_path) {
+		// will be reported by compiler
+		return Err(Error::ExpandFailure)
+	}
+
+	Ok(())
+}