build.rs

use std::path::Path;

use serde::Deserialize;

#[derive(Deserialize)]
struct CargoToml {
	package: Package,
}

#[derive(Deserialize)]
struct Package {
	name: String,
	version: String,
	authors: Vec<String>,
	description: String,
}

fn main() {
	println!("Thank you for installing and using GRC! [by @sdttttt]");
	println!("cargo:rerun-if-changed=Cargo.toml");

	let cargo_toml_str =
		std::fs::read_to_string(Path::new("Cargo.toml")).expect("Cargo.toml read failed.");
	let cargo_toml = toml::from_str::<CargoToml>(&cargo_toml_str).expect("toml parse failed.");

	let version_file_rs = Path::new("src/version.rs");

	let version_file_str = format!(
		r#"
// auto generated by build.rs
	
pub const NAME: &str = "{}";
pub const VERSION: &str = "{}";
pub const AUTHOR: &str = "{}";
pub const DESCRIPTION: &str = "{}";
"#,
		cargo_toml.package.name,
		cargo_toml.package.version,
		cargo_toml.package.authors.join(", "),
		cargo_toml.package.description
	);
	std::fs::write(version_file_rs, version_file_str).expect("version.rs wirte failed.");
}