Publish v0.1.12 add util::random_machine_id

Cargo.toml

@@ -22,6 +22,7 @@ regex = "1.5.4"
 uuid = { version = "1.1", features = ["v4"] }
 dunce = "1.0"
 toml = "0.7"
+rand = "0.8"
 
 # painting
 ansi_term = "0.12.1"

src/api/mod.rs

@@ -20,6 +20,7 @@ pub mod fs;
 pub mod regex;
 pub mod other;
 pub mod toml;
+pub mod util;
 
 fn git_err(e: git2::Error) -> RhaiError {
 	err!("{:?}", e)

src/api/util.rs

@@ -0,0 +1,29 @@
+use super::RhaiResult;
+
+use std::fmt::Write;
+
+use rhai::{Engine, Module};
+
+use rand::RngCore;
+
+
+// returns a random value that can be used in /etc/machine-id
+fn random_machine_id() -> RhaiResult<String> {
+	let mut bytes = [0u8; 16];
+	rand::thread_rng().fill_bytes(&mut bytes);
+
+	let mut s = String::with_capacity(32);
+	for b in bytes {
+		write!(s, "{b:02x}").unwrap();
+	}
+
+	Ok(s)
+}
+
+
+pub fn add(engine: &mut Engine) {
+	let mut util_mod = Module::new();
+	util_mod.set_native_fn("random_machine_id", random_machine_id);
+	engine
+		.register_static_module("util", util_mod.into());
+}

src/script.rs

@@ -13,6 +13,7 @@ pub type Result<T> = std::result::Result<T, Error>;
 
 pub type RhaiResult<T> = std::result::Result<T, Box<EvalAltResult>>;
 
+
 #[derive(Debug)]
 pub enum Error {
 	Rhai(Box<EvalAltResult>),
@@ -46,7 +47,6 @@ pub struct Script {
 }
 
 impl Script {
-
 	pub fn new(p: impl AsRef<Path>) -> Result<Self> {
 		let engine = new_engine();
 		let mut scope = Scope::new();
@@ -83,7 +83,6 @@ impl Script {
 	) -> Result<()> {
 		self.call_fn(cmd, args)
 	}
-
 }
 
 
@@ -111,6 +110,7 @@ fn new_engine() -> Engine {
 	crate::api::regex::add(&mut engine);
 	crate::api::other::add(&mut engine);
 	crate::api::toml::add(&mut engine);
+	crate::api::util::add(&mut engine);
 
 	engine
 }