feat: move steam library folders parser to own module; function to find steam openxr json; format

src/file_builders/active_runtime_json.rs

@@ -1,7 +1,10 @@
 use crate::{
     paths::{get_backup_dir, SYSTEM_PREFIX},
     profile::Profile,
-    util::file_utils::{copy_file, deserialize_file, get_writer, set_file_readonly},
+    util::{
+        file_utils::{copy_file, deserialize_file, get_writer, set_file_readonly},
+        steam_library_folder::SteamLibraryFolder,
+    },
     xdg::XDG,
 };
 use serde::{Deserialize, Serialize};
@@ -9,6 +12,7 @@ use std::{
     fs::remove_file,
     path::{Path, PathBuf},
 };
+use tracing::error;
 
 #[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
 pub struct ActiveRuntimeInnerRuntime {
@@ -38,6 +42,23 @@ pub fn is_steam(active_runtime: &ActiveRuntime) -> bool {
     matches!(active_runtime.runtime.valve_runtime_is_steamvr, Some(true))
 }
 
+pub const STEAMVR_STEAM_APPID: u32 = 250820;
+
+pub fn find_steam_openxr_json() -> Option<PathBuf> {
+    match SteamLibraryFolder::get_folders() {
+        Ok(libraryfolders) => libraryfolders
+            .iter()
+            .find(|(_, folder)| folder.apps.contains_key(&STEAMVR_STEAM_APPID))
+            .map(|(_, folder)| {
+                PathBuf::from(&folder.path).join("steamapps/common/SteamVR/steamxr_linux64.json")
+            }),
+        Err(e) => {
+            error!("unable to find steam openxr json: unable to load steam libraryfolders: {e}");
+            None
+        }
+    }
+}
+
 fn get_backup_steam_active_runtime_path() -> PathBuf {
     get_backup_dir().join("active_runtime.json.steam.bak")
 }

src/main.rs

@@ -5,7 +5,6 @@ use file_builders::{
     openvrpaths_vrpath::{get_current_openvrpaths, set_current_openvrpaths_to_steam},
 };
 use gettextrs::LocaleCategory;
-use tracing::warn;
 use relm4::{
     adw,
     gtk::{self, gdk, gio, glib, prelude::*},
@@ -13,6 +12,7 @@ use relm4::{
 };
 use std::env;
 use steam_linux_runtime_injector::restore_runtime_entrypoint;
+use tracing::warn;
 use tracing_subscriber::{filter::LevelFilter, EnvFilter};
 use ui::{
     app::{App, AppInit, Msg},

src/steam_linux_runtime_injector.rs

@@ -1,76 +1,33 @@
 use crate::{
-    paths::{get_backup_dir, get_home_dir},
+    paths::get_backup_dir,
     profile::Profile,
-    util::file_utils::{copy_file, get_writer},
+    util::{
+        file_utils::{copy_file, get_writer},
+        steam_library_folder::SteamLibraryFolder,
+    },
 };
 use anyhow::bail;
 use lazy_static::lazy_static;
-use tracing::error;
-use serde::Deserialize;
 use std::{
-    collections::HashMap,
     fs::read_to_string,
     io::Write,
     path::{Path, PathBuf},
 };
-
-#[derive(Deserialize)]
-struct LibraryFolder {
-    pub path: String,
-    pub apps: HashMap<u32, usize>,
-}
+use tracing::error;
 
 pub const PRESSURE_VESSEL_STEAM_APPID: u32 = 1628350;
 
-fn get_steam_main_dir_path() -> anyhow::Result<PathBuf> {
-    let steam_root: PathBuf = get_home_dir().join(".steam/root");
-
-    if steam_root.is_symlink() {
-        Ok(steam_root.read_link()?)
-    } else if steam_root.is_dir() {
-        Ok(steam_root)
-    } else {
-        bail!(
-            "Canonical steam root '{}' is not a dir nor a symlink!",
-            steam_root.to_string_lossy()
-        )
-    }
-}
-
-fn parse_steam_libraryfolders_vdf(path: &Path) -> anyhow::Result<HashMap<u32, LibraryFolder>> {
-    Ok(keyvalues_serde::from_str(read_to_string(path)?.as_str())?)
-}
-
 fn get_runtime_entrypoint_path() -> Option<PathBuf> {
-    match get_steam_main_dir_path() {
-        Ok(steam_root) => {
-            let steam_libraryfolders_path = steam_root.join("steamapps/libraryfolders.vdf");
-
-            if !steam_libraryfolders_path.is_file() {
-                error!(
-                    "Steam libraryfolders.vdf does not exist in its canonical location {}",
-                    steam_libraryfolders_path.to_string_lossy()
-                );
-                return None;
-            }
-
-            let libraryfolders: HashMap<u32, LibraryFolder> =
-                parse_steam_libraryfolders_vdf(&steam_libraryfolders_path).ok()?;
-
-            libraryfolders
-                .iter()
-                .find(|(_, libraryfolder)| {
-                    libraryfolder
-                        .apps
-                        .contains_key(&PRESSURE_VESSEL_STEAM_APPID)
-                })
-                .map(|(_, libraryfolder)| {
-                    PathBuf::from(&libraryfolder.path)
-                        .join("steamapps/common/SteamLinuxRuntime_sniper/_v2-entry-point")
-                })
-        }
+    match SteamLibraryFolder::get_folders() {
+        Ok(libraryfolders) => libraryfolders
+            .iter()
+            .find(|(_, folder)| folder.apps.contains_key(&PRESSURE_VESSEL_STEAM_APPID))
+            .map(|(_, folder)| {
+                PathBuf::from(&folder.path)
+                    .join("steamapps/common/SteamLinuxRuntime_sniper/_v2-entry-point")
+            }),
         Err(e) => {
-            error!("Error getting steam root path: {e}");
+            error!("unable to get runtime entrypoint path: {e}");
             None
         }
     }
@@ -126,22 +83,3 @@ pub fn set_runtime_entrypoint_launch_opts_from_profile(profile: &Profile) -> any
     }
     bail!("Could not find valid runtime entrypoint");
 }
-
-#[cfg(test)]
-mod tests {
-    use std::path::Path;
-
-    use super::parse_steam_libraryfolders_vdf;
-
-    #[test]
-    fn deserialize_steam_libraryfolders_vdf() {
-        let lf = parse_steam_libraryfolders_vdf(Path::new("./test/files/steam_libraryfolders.vdf"))
-            .unwrap();
-        assert_eq!(lf.len(), 1);
-        let first = lf.get(&0).unwrap();
-        assert_eq!(first.path, "/home/gabmus/.local/share/Steam");
-        assert_eq!(first.apps.len(), 10);
-        assert_eq!(first.apps.get(&228980).unwrap(), &29212173);
-        assert_eq!(first.apps.get(&632360).unwrap(), &0);
-    }
-}

src/ui/app.rs

@@ -47,7 +47,6 @@ use crate::{
 };
 use adw::{prelude::*, ResponseAppearance};
 use gtk::glib::{self, clone};
-use tracing::error;
 use notify_rust::NotificationHandle;
 use relm4::{
     actions::{AccelsPlus, ActionGroupName, RelmAction, RelmActionGroup},
@@ -55,6 +54,7 @@ use relm4::{
     prelude::*,
 };
 use std::{collections::VecDeque, fs::remove_file, time::Duration};
+use tracing::error;
 
 pub struct App {
     application: adw::Application,

src/ui/install_wivrn_box.rs

@@ -6,9 +6,9 @@ use crate::{
     profile::{Profile, XRServiceType},
 };
 use gtk::prelude::*;
-use tracing::error;
 use relm4::{new_action_group, new_stateless_action, prelude::*};
 use std::fs::remove_file;
+use tracing::error;
 
 const WIVRN_LATEST_RELEASE_APK_URL: &str =
     "https://github.com/WiVRn/WiVRn/releases/latest/download/WiVRn-standard-release.apk";
@@ -185,10 +185,7 @@ impl AsyncComponent for InstallWivrnBox {
                         let existing = cache_file_path(WIVRN_LATEST_RELEASE_APK_URL, Some("apk"));
                         if existing.is_file() {
                             if let Err(e) = remove_file(&existing) {
-                                error!(
-                                    "failed to remove file {}: {e}",
-                                    existing.to_string_lossy()
-                                );
+                                error!("failed to remove file {}: {e}", existing.to_string_lossy());
                             }
                         }
                         sender.input(Self::Input::DoInstall(WIVRN_LATEST_RELEASE_APK_URL.into()));

src/ui/job_worker/mod.rs

@@ -4,7 +4,6 @@ use self::{
     state::JobWorkerState,
 };
 use crate::profile::Profile;
-use tracing::{error, warn};
 use nix::sys::signal::{
     kill,
     Signal::{SIGKILL, SIGTERM},
@@ -16,6 +15,7 @@ use std::{
     thread::{self, sleep},
     time::Duration,
 };
+use tracing::{error, warn};
 
 pub mod internal_worker;
 pub mod job;

src/ui/main_view.rs

@@ -30,13 +30,13 @@ use crate::{
 };
 use adw::{prelude::*, ResponseAppearance};
 use gtk::glib::clone;
-use tracing::{error, warn};
 use relm4::{
     actions::{ActionGroupName, RelmAction, RelmActionGroup},
     new_action_group, new_stateless_action,
     prelude::*,
 };
 use std::{fs::read_to_string, io::Write};
+use tracing::{error, warn};
 
 #[tracker::track]
 pub struct MainView {

src/ui/openhmd_calibration_box.rs

@@ -1,9 +1,9 @@
 use crate::{constants::APP_NAME, xdg::XDG};
-use tracing::{debug, error};
 use relm4::{
     gtk::{self, prelude::*},
     ComponentParts, ComponentSender, SimpleComponent,
 };
+use tracing::{debug, error};
 
 #[tracker::track]
 pub struct OpenHmdCalibrationBox {

src/ui/steamvr_calibration_box.rs

@@ -4,7 +4,6 @@ use super::job_worker::{
     JobWorker,
 };
 use crate::paths::get_steamvr_bin_dir_path;
-use tracing::error;
 use relm4::{
     gtk::{self, prelude::*},
     ComponentParts, ComponentSender, RelmWidgetExt, SimpleComponent,
@@ -15,6 +14,7 @@ use std::{
     thread::sleep,
     time::Duration,
 };
+use tracing::error;
 
 #[tracker::track]
 pub struct SteamVrCalibrationBox {

src/ui/wivrn_conf_editor.rs

@@ -20,8 +20,8 @@ use crate::{
 };
 use adw::prelude::*;
 use gtk::glib::clone;
-use tracing::error;
 use relm4::{factory::AsyncFactoryVecDeque, prelude::*};
+use tracing::error;
 
 #[tracker::track]
 pub struct WivrnConfEditor {

src/ui/wivrn_wired_start_box.rs

@@ -6,8 +6,8 @@ use crate::{
     profile::{Profile, XRServiceType},
 };
 use gtk::prelude::*;
-use tracing::error;
 use relm4::prelude::*;
+use tracing::error;
 
 #[derive(PartialEq, Eq, Debug, Clone)]
 pub enum StartClientStatus {

src/util/file_utils.rs

@@ -1,6 +1,5 @@
 use crate::{async_process::async_process, profile::Profile};
 use anyhow::bail;
-use tracing::{debug, error};
 use nix::{
     errno::Errno,
     sys::statvfs::{statvfs, FsFlags},
@@ -10,6 +9,7 @@ use std::{
     io::{BufReader, BufWriter},
     path::Path,
 };
+use tracing::{debug, error};
 
 pub fn get_writer(path: &Path) -> anyhow::Result<BufWriter<std::fs::File>> {
     if let Some(parent) = path.parent() {

src/util/mod.rs

@@ -1,3 +1,4 @@
 pub mod file_utils;
 pub mod hash;
+pub mod steam_library_folder;
 pub mod steamvr_utils;

src/util/steam_library_folder.rs

@@ -0,0 +1,69 @@
+use crate::paths::get_home_dir;
+use anyhow::bail;
+use serde::Deserialize;
+use std::{
+    collections::HashMap,
+    fs::read_to_string,
+    path::{Path, PathBuf},
+};
+
+#[derive(Deserialize)]
+pub struct SteamLibraryFolder {
+    pub path: String,
+    pub apps: HashMap<u32, usize>,
+}
+
+fn get_steam_main_dir_path() -> anyhow::Result<PathBuf> {
+    let steam_root: PathBuf = get_home_dir().join(".steam/root");
+
+    if steam_root.is_symlink() {
+        Ok(steam_root.read_link()?)
+    } else if steam_root.is_dir() {
+        Ok(steam_root)
+    } else {
+        bail!(
+            "Canonical steam root '{}' is not a dir nor a symlink!",
+            steam_root.to_string_lossy()
+        )
+    }
+}
+
+impl SteamLibraryFolder {
+    pub fn get_folders() -> anyhow::Result<HashMap<u32, Self>> {
+        let libraryfolders_path = get_steam_main_dir_path()?.join("steamapps/libraryfolders.vdf");
+        if !libraryfolders_path.is_file() {
+            bail!(
+                "Steam libraryfolders.vdf does not exist in its canonical location {}",
+                libraryfolders_path.to_string_lossy()
+            );
+        }
+        Self::get_folders_from_path(&libraryfolders_path)
+    }
+
+    /// Do not use this: use get_folders() instead as it always uses Steam's
+    /// canonical root path. This is intended to be directly used only for
+    /// unit tests
+    pub fn get_folders_from_path(p: &Path) -> anyhow::Result<HashMap<u32, Self>> {
+        Ok(keyvalues_serde::from_str(read_to_string(p)?.as_str())?)
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::SteamLibraryFolder;
+    use std::path::Path;
+
+    #[test]
+    fn deserialize_steam_libraryfolders_vdf() {
+        let lf = SteamLibraryFolder::get_folders_from_path(Path::new(
+            "./test/files/steam_libraryfolders.vdf",
+        ))
+        .unwrap();
+        assert_eq!(lf.len(), 1);
+        let first = lf.get(&0).unwrap();
+        assert_eq!(first.path, "/home/gabmus/.local/share/Steam");
+        assert_eq!(first.apps.len(), 10);
+        assert_eq!(first.apps.get(&228980).unwrap(), &29212173);
+        assert_eq!(first.apps.get(&632360).unwrap(), &0);
+    }
+}

src/xr_devices.rs

@@ -1,6 +1,6 @@
 use libmonado::{self, BatteryStatus, DeviceRole};
-use tracing::error;
 use std::{collections::HashMap, fmt::Display, slice::Iter};
+use tracing::error;
 
 #[derive(Default, Debug, Clone, Copy, PartialEq, Eq)]
 pub enum XRDeviceRole {