Hot-Reloading Refactor

Signed-off-by: Jason Volk <jason@zemos.net>

src/core/mods/new.rs

@@ -0,0 +1,23 @@
+use std::ffi::OsStr;
+
+use super::{path, Library};
+use crate::{Error, Result};
+
+const OPEN_FLAGS: i32 = libloading::os::unix::RTLD_LAZY | libloading::os::unix::RTLD_GLOBAL;
+
+pub fn from_name(name: &str) -> Result<Library> {
+	let path = path::from_name(name)?;
+	from_path(&path)
+}
+
+pub fn from_path(path: &OsStr) -> Result<Library> {
+	//SAFETY: Calls dlopen(3) on unix platforms. This might not have to be unsafe
+	// if wrapped in with_dlerror.
+	let lib = unsafe { Library::open(Some(path), OPEN_FLAGS) };
+	if let Err(e) = lib {
+		let name = path::to_name(path)?;
+		return Err(Error::Err(format!("Loading module {name:?} failed: {e}")));
+	}
+
+	Ok(lib.expect("module loaded"))
+}