system_stats: add read and written to EWW_DISK

CHANGELOG.md

@@ -31,6 +31,7 @@ All notable changes to eww will be listed here, starting at changes since versio
 - Add `transform-origin-x`/`transform-origin-y` properties to transform widget (By: mario-kr)
 - Add keyboard support for button presses (By: julianschuler)
 - Support empty string for safe access operator (By: ModProg)
+- Add `read` and `written` to the `EWW_DISK` magic variable (By: bkueng)
 
 ## [0.6.0] (21.04.2024)
 

crates/eww/src/config/inbuilt.rs

@@ -39,7 +39,7 @@ define_builtin_vars! {
     "EWW_RAM" [2] => || Ok(DynVal::from(get_ram())),
 
     // @desc EWW_DISK - Information on on all mounted partitions (Might report inaccurately on some filesystems, like btrfs and zfs) Example: `{EWW_DISK["/"]}`
-    // @prop { <mount_point>: { name, total, free, used, used_perc } }
+    // @prop { <mount_point>: { name, total, free, used, used_perc, read, written } }
     "EWW_DISK" [2] => || Ok(DynVal::from(get_disks())),
 
     // @desc EWW_BATTERY - Battery capacity in percent of the main battery

crates/eww/src/config/system_stats.rs

@@ -20,21 +20,25 @@ impl RefreshTime {
 }
 
 static SYSTEM: Lazy<Mutex<System>> = Lazy::new(|| Mutex::new(System::new()));
-static DISKS: Lazy<Mutex<sysinfo::Disks>> = Lazy::new(|| Mutex::new(sysinfo::Disks::new_with_refreshed_list()));
+static DISKS: Lazy<Mutex<(RefreshTime, sysinfo::Disks)>> =
+    Lazy::new(|| Mutex::new((RefreshTime::new(), sysinfo::Disks::new_with_refreshed_list())));
 static COMPONENTS: Lazy<Mutex<sysinfo::Components>> = Lazy::new(|| Mutex::new(sysinfo::Components::new_with_refreshed_list()));
 static NETWORKS: Lazy<Mutex<(RefreshTime, sysinfo::Networks)>> =
     Lazy::new(|| Mutex::new((RefreshTime::new(), sysinfo::Networks::new_with_refreshed_list())));
 
 pub fn get_disks() -> String {
-    let mut disks = DISKS.lock().unwrap();
+    let (ref mut last_refresh, ref mut disks) = &mut *DISKS.lock().unwrap();
     disks.refresh_specifics(true, DiskRefreshKind::everything());
 
+    let elapsed = last_refresh.next_refresh();
+
     disks
         .iter()
         .map(|c| {
             let total_space = c.total_space();
             let available_space = c.available_space();
             let used_space = total_space - available_space;
+            let usage = c.usage();
 
             (
                 c.mount_point().display().to_string(),
@@ -43,7 +47,9 @@ pub fn get_disks() -> String {
                     "total": total_space,
                     "free": available_space,
                     "used": used_space,
-                    "used_perc": (used_space as f32 / total_space as f32) * 100f32
+                    "used_perc": (used_space as f32 / total_space as f32) * 100f32,
+                    "read": usage.read_bytes as f64 / elapsed.as_secs_f64(),
+                    "written": usage.written_bytes as f64 / elapsed.as_secs_f64(),
                 }),
             )
         })