refactor(core): `Settings` serialization using `bincode` (#1758)

.changes/refactor-settings.md

@@ -0,0 +1,5 @@
+---
+"tauri": patch
+---
+
+`Settings` is now serialized using `bincode`.

core/tauri/Cargo.toml

@@ -50,6 +50,7 @@ os_pipe = "0.9"
 minisign-verify = "0.1.8"
 image = "0.23"
 state = "0.4"
+bincode = "1.3"
 
 [build-dependencies]
 cfg_aliases = "0.1.1"

core/tauri/src/api/error.rs

@@ -45,6 +45,9 @@ pub enum Error {
   /// JSON error.
   #[error("{0}")]
   Json(#[from] serde_json::Error),
+  /// Bincode error.
+  #[error("{0}")]
+  Bincode(#[from] Box<bincode::ErrorKind>),
   /// IO error.
   #[error("{0}")]
   Io(#[from] std::io::Error),

core/tauri/src/endpoints/notification.rs

@@ -80,7 +80,7 @@ pub fn send(options: NotificationOptions, config: &Config) -> crate::Result<Invo
 
 #[cfg(notification_all)]
 pub fn is_permission_granted(config: &Config) -> crate::Result<InvokeResponse> {
-  let settings = crate::settings::read_settings(config)?;
+  let settings = crate::settings::read_settings(config);
   if let Some(allow_notification) = settings.allow_notification {
     Ok(allow_notification.into())
   } else {
@@ -90,7 +90,7 @@ pub fn is_permission_granted(config: &Config) -> crate::Result<InvokeResponse> {
 
 #[cfg(notification_all)]
 pub fn request_permission(config: &Config) -> crate::Result<String> {
-  let mut settings = crate::settings::read_settings(config)?;
+  let mut settings = crate::settings::read_settings(config);
   if let Some(allow_notification) = settings.allow_notification {
     return Ok(if allow_notification {
       PERMISSION_GRANTED.to_string()

core/tauri/src/settings.rs

@@ -4,7 +4,7 @@
 
 use crate::{
   api::{
-    file::read_string,
+    file::read_binary,
     path::{resolve_path, BaseDirectory},
   },
   Config,
@@ -27,7 +27,7 @@ pub struct Settings {
 
 /// Gets the path to the settings file
 fn get_settings_path(config: &Config) -> crate::api::Result<PathBuf> {
-  resolve_path(config, ".tauri-settings.json", Some(BaseDirectory::App))
+  resolve_path(config, ".tauri-settings", Some(BaseDirectory::App))
 }
 
 /// Write the settings to the file system.
@@ -41,19 +41,22 @@ pub(crate) fn write_settings(config: &Config, settings: Settings) -> crate::Resu
   File::create(settings_path)
     .map_err(Into::into)
     .and_then(|mut f| {
-      f.write_all(serde_json::to_string(&settings)?.as_bytes())
+      f.write_all(&bincode::serialize(&settings).map_err(crate::api::Error::Bincode)?)
         .map_err(Into::into)
     })
 }
 
 /// Reads the settings from the file system.
-pub fn read_settings(config: &Config) -> crate::Result<Settings> {
-  let settings_path = get_settings_path(config)?;
-  if settings_path.exists() {
-    read_string(settings_path)
-      .and_then(|settings| serde_json::from_str(settings.as_str()).map_err(Into::into))
-      .map_err(Into::into)
+pub fn read_settings(config: &Config) -> Settings {
+  if let Ok(settings_path) = get_settings_path(config) {
+    if settings_path.exists() {
+      read_binary(settings_path)
+        .and_then(|settings| bincode::deserialize(&settings).map_err(Into::into))
+        .unwrap_or_default()
+    } else {
+      Settings::default()
+    }
   } else {
-    Ok(Default::default())
+    Settings::default()
   }
 }