Add roblox_studio module for locating and interacting with install

server/src/lib.rs

@@ -24,3 +24,4 @@ pub mod session;
 pub mod vfs_session;
 pub mod web;
 pub mod web_util;
+pub mod roblox_studio;

server/src/roblox_studio.rs

@@ -0,0 +1,27 @@
+//! Interactions with Roblox Studio's installation, including its location and
+//! mechanisms like PluginSettings.
+
+use std::path::PathBuf;
+use std::env;
+
+static ROJO_PLUGIN_ID: &'static str = "1211549683";
+
+#[cfg(target_os = "windows")]
+pub fn install_location() -> Option<PathBuf> {
+    let local_app_data = env::var("LocalAppData").ok()?;
+    let mut location = PathBuf::from(local_app_data);
+
+    location.push("Roblox");
+
+    Some(location)
+}
+
+#[cfg(target_os = "macos")]
+pub fn install_location() -> Option<PathBuf> {
+    unimplemented!();
+}
+
+#[cfg(not(any(target_os = "windows", target_os = "macos")))]
+pub fn install_location() -> Option<PathBuf> {
+    None
+}