desktop: Add --save-directory

desktop/src/backends/storage.rs

@@ -1,4 +1,3 @@
-use anyhow::{Context, Error};
 use ruffle_core::backend::storage::StorageBackend;
 use std::fs;
 use std::fs::File;
@@ -10,23 +9,18 @@ pub struct DiskStorageBackend {
 }
 
 impl DiskStorageBackend {
-    pub fn new() -> Result<Self, Error> {
-        let base_path = dirs::data_local_dir()
-            .context("Couldn't find a valid data_local dir")?
-            .join("ruffle");
-        let shared_objects_path = base_path.join("SharedObjects");
-
+    pub fn new(shared_objects_path: PathBuf) -> Self {
         // Create a base dir if one doesn't exist yet
         if !shared_objects_path.exists() {
             tracing::info!("Creating storage dir");
-            if let Err(r) = fs::create_dir_all(&base_path) {
+            if let Err(r) = fs::create_dir_all(&shared_objects_path) {
                 tracing::warn!("Unable to create storage dir {}", r);
             }
         }
 
-        Ok(DiskStorageBackend {
+        DiskStorageBackend {
             shared_objects_path,
-        })
+        }
     }
 
     /// Verifies that the path contains no `..` components to prevent accessing files outside of the Ruffle directory.

desktop/src/cli.rs

@@ -10,6 +10,13 @@ use ruffle_render_wgpu::clap::{GraphicsBackend, PowerPreference};
 use std::path::Path;
 use url::Url;
 
+fn get_default_save_directory() -> std::path::PathBuf {
+    dirs::data_local_dir()
+        .expect("Couldn't find a valid data_local dir")
+        .join("ruffle")
+        .join("SharedObjects")
+}
+
 #[derive(Parser, Debug)]
 #[clap(
     name = "Ruffle",
@@ -82,6 +89,10 @@ pub struct Opt {
     #[cfg(feature = "render_trace")]
     trace_path: Option<std::path::PathBuf>,
 
+    /// Location to store save data for games.
+    #[clap(long, default_value_os_t=get_default_save_directory())]
+    pub save_directory: std::path::PathBuf,
+
     /// Proxy to use when loading movies via URL.
     #[clap(long)]
     pub proxy: Option<Url>,

desktop/src/player.rs

@@ -20,6 +20,7 @@ use ruffle_render::quality::StageQuality;
 use ruffle_render_wgpu::backend::WgpuRenderBackend;
 use ruffle_render_wgpu::descriptors::Descriptors;
 use std::collections::{HashMap, HashSet};
+use std::path::PathBuf;
 use std::rc::Rc;
 use std::sync::{Arc, Mutex, MutexGuard};
 use std::time::Duration;
@@ -46,6 +47,7 @@ pub struct PlayerOptions {
     pub upgrade_to_https: bool,
     pub fullscreen: bool,
     pub load_behavior: LoadBehavior,
+    pub save_directory: PathBuf,
     pub letterbox: Letterbox,
     pub spoof_url: Option<Url>,
     pub player_version: u8,
@@ -72,6 +74,7 @@ impl From<&Opt> for PlayerOptions {
             upgrade_to_https: value.upgrade_to_https,
             fullscreen: value.fullscreen,
             load_behavior: value.load_behavior,
+            save_directory: value.save_directory.clone(),
             letterbox: value.letterbox,
             spoof_url: value.spoof_url.clone(),
             player_version: value.player_version.unwrap_or(32),
@@ -154,7 +157,7 @@ impl ActivePlayer {
         builder = builder
             .with_navigator(navigator)
             .with_renderer(renderer)
-            .with_storage(DiskStorageBackend::new().expect("Couldn't create storage backend"))
+            .with_storage(DiskStorageBackend::new(opt.save_directory.clone()))
             .with_fs_commands(Box::new(DesktopFSCommandProvider {
                 event_loop: event_loop.clone(),
                 window: window.clone(),