Author: Nikola Hristov

Cargo.toml

@@ -28,3 +28,7 @@ rayon = "1.8.1"
 serde = { version = "1.0.197", features = ["derive"] }
 serde_json = "1.0.114"
 toml = "0.8.10"
+
+[build-dependencies]
+serde = { version = "1.0.215", features = ["derive"] }
+toml = "0.8.19"

build.rs

@@ -1,19 +1,23 @@
-use std::fs;
+#[derive(Deserialize)]
+struct Toml {
+	package:Package,
+}
+
+#[derive(Deserialize)]
+struct Package {
+	version:String,
+}
 
 fn main() {
 	println!("cargo:rerun-if-changed=Cargo.toml");
 
 	println!(
 		"cargo:rustc-env=CARGO_PKG_VERSION={}",
-		fs::read_to_string("Cargo.toml")
-			.expect("Failed to read Cargo.toml.")
-			.lines()
-			.find(|line| line.starts_with("version"))
-			.unwrap()
-			.split('=')
-			.nth(1)
-			.expect("Invalid version line format.")
-			.trim()
-			.trim_matches('"')
+		toml::from_str::<Toml>(&std::fs::read_to_string("Cargo.toml").expect("Cannot Cargo.toml."))
+			.expect("Cannot toml.")
+			.package
+			.version
 	);
 }
+
+use serde::Deserialize;