Config for the swayrbar

src/bar.rs

@@ -20,6 +20,7 @@ use env_logger::Env;
 use serde_json;
 use std::thread;
 
+pub mod config;
 pub mod module;
 
 pub fn start() {
@@ -28,10 +29,18 @@ pub fn start() {
 
     thread::spawn(handle_input);
     let mods: Vec<Box<dyn BarModuleFn>> = vec![
-        crate::bar::module::window::BarModuleWindow::init(),
-        crate::bar::module::sysinfo::BarModuleSysInfo::init(),
-        crate::bar::module::battery::BarModuleBattery::init(),
-        crate::bar::module::date::BarModuleDate::init(),
+        module::window::BarModuleWindow::create(
+            module::window::BarModuleWindow::default_config("0".to_owned()),
+        ),
+        module::sysinfo::BarModuleSysInfo::create(
+            module::sysinfo::BarModuleSysInfo::default_config("0".to_owned()),
+        ),
+        module::battery::BarModuleBattery::create(
+            module::battery::BarModuleBattery::default_config("0".to_owned()),
+        ),
+        module::date::BarModuleDate::create(
+            module::date::BarModuleDate::default_config("0".to_owned()),
+        ),
     ];
     generate_status(&mods);
 }

src/bar/config.rs

@@ -0,0 +1,43 @@
+// Copyright (C) 2022  Tassilo Horn <tsdh@gnu.org>
+//
+// This program is free software: you can redistribute it and/or modify it
+// under the terms of the GNU General Public License as published by the Free
+// Software Foundation, either version 3 of the License, or (at your option)
+// any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT
+// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with
+// this program.  If not, see <https://www.gnu.org/licenses/>.
+
+//! TOML configuration for swayrbar.
+
+use serde::{Deserialize, Serialize};
+
+#[derive(Debug, Serialize, Deserialize)]
+pub struct Config {
+    pub refresh_interval: f32,
+    pub modules: Vec<String>,
+    pub module_configs: Vec<ModuleConfig>,
+}
+
+#[derive(Debug, Serialize, Deserialize)]
+pub struct ModuleConfig {
+    pub module_type: String,
+    pub instance: String,
+    pub format: String,
+    pub html_escape: bool,
+}
+
+impl Default for Config {
+    fn default() -> Self {
+        Config {
+            refresh_interval: 1.0,
+            modules: vec!["date/0".to_owned()],
+            module_configs: vec![],
+        }
+    }
+}

src/bar/module.rs

@@ -13,6 +13,7 @@
 // You should have received a copy of the GNU General Public License along with
 // this program.  If not, see <https://www.gnu.org/licenses/>.
 
+use crate::bar::config;
 use swaybar_types as s;
 
 pub mod battery;
@@ -21,12 +22,15 @@ pub mod sysinfo;
 pub mod window;
 
 pub trait BarModuleFn {
-    fn init() -> Box<dyn BarModuleFn>
+    fn create(config: config::ModuleConfig) -> Box<dyn BarModuleFn>
     where
         Self: Sized;
-    fn name() -> String
+    fn default_config(instance: String) -> config::ModuleConfig
     where
         Self: Sized;
-    fn instance(&self) -> String;
+    fn name() -> &'static str
+    where
+        Self: Sized;
+    fn instance(&self) -> &str;
     fn build(&self) -> s::Block;
 }

src/bar/module/battery.rs

@@ -15,6 +15,7 @@
 
 //! The date `swayrbar` module.
 
+use crate::bar::config;
 use crate::bar::module::BarModuleFn;
 use crate::fmt_replace::fmt_replace;
 use battery as bat;
@@ -22,7 +23,7 @@ use std::cell::RefCell;
 use swaybar_types as s;
 
 pub struct BarModuleBattery {
-    pub instance: String,
+    config: config::ModuleConfig,
     manager: RefCell<bat::Manager>,
 }
 
@@ -42,23 +43,25 @@ fn get_refreshed_batteries(
     Ok(bats)
 }
 
-fn get_text(manager: &RefCell<bat::Manager>, fmt: &str) -> String {
+fn get_text(
+    manager: &RefCell<bat::Manager>,
+    cfg: &config::ModuleConfig,
+) -> String {
     match get_refreshed_batteries(manager) {
         Ok(bats) => {
-            fmt_replace!(&fmt, false, {
+            fmt_replace!(&cfg.format, cfg.html_escape, {
                 "state_of_charge" => bats.iter()
                     .map(|b| b.state_of_charge().value)
                     .sum::<f32>()
-                    / bats.len() as f32 * 100 as f32,
+                    / bats.len() as f32 * 100_f32,
                 "state_of_health" => bats.iter()
                     .map(|b| b.state_of_health().value)
                     .sum::<f32>()
-                    / bats.len() as f32 * 100 as f32,
-
+                    / bats.len() as f32 * 100_f32,
                 "state" => bats.iter()
                     .map(|b| format!("{:?}", b.state()))
                     .next()
-                    .unwrap_or(String::new()),
+                    .unwrap_or_default(),
             })
         }
         Err(err) => format!("{}", err),
@@ -66,30 +69,37 @@ fn get_text(manager: &RefCell<bat::Manager>, fmt: &str) -> String {
 }
 
 impl BarModuleFn for BarModuleBattery {
-    fn init() -> Box<dyn BarModuleFn> {
+    fn create(config: config::ModuleConfig) -> Box<dyn BarModuleFn> {
         Box::new(BarModuleBattery {
-            instance: "0".to_string(),
+            config,
             manager: RefCell::new(
                 bat::Manager::new().expect("Could not create Manager"),
             ),
         })
     }
 
-    fn name() -> String {
-        String::from("battery")
+    fn default_config(instance: String) -> config::ModuleConfig {
+        config::ModuleConfig {
+            module_type: Self::name().to_owned(),
+            instance,
+            format: "🔋 Bat: {state_of_charge:{:5.1}}%, {state}, Health: {state_of_health:{:5.1}}%".to_owned(),
+            html_escape: true,
+        }
+    }
+
+    fn name() -> &'static str {
+        "battery"
     }
 
-    fn instance(&self) -> String {
-        self.instance.clone()
+    fn instance(&self) -> &str {
+        &self.config.instance
     }
 
     fn build(&self) -> s::Block {
-        let fmt =
-            "🔋 Bat: {state_of_charge:{:5.1}}%, {state}, Health: {state_of_health:{:5.1}}%";
-        let text = get_text(&self.manager, fmt);
+        let text = get_text(&self.manager, &self.config);
         s::Block {
-            name: Some(Self::name()),
-            instance: Some(self.instance.clone()),
+            name: Some(Self::name().to_owned()),
+            instance: Some(self.config.instance.clone()),
             full_text: text,
             align: Some(s::Align::Right),
             markup: Some(s::Markup::Pango),

src/bar/module/date.rs

@@ -15,34 +15,42 @@
 
 //! The date `swayrbar` module.
 
+use crate::bar::module::config;
 use crate::bar::module::BarModuleFn;
 use swaybar_types as s;
 
 pub struct BarModuleDate {
-    pub instance: String,
+    config: config::ModuleConfig,
 }
 
 impl BarModuleFn for BarModuleDate {
-    fn init() -> Box<dyn BarModuleFn> {
-        Box::new(BarModuleDate {
-            instance: "0".to_string(),
-        })
+    fn default_config(instance: String) -> config::ModuleConfig {
+        config::ModuleConfig {
+            module_type: "date".to_owned(),
+            instance,
+            format: "⏰ %F %X".to_owned(),
+            html_escape: false,
+        }
+    }
+
+    fn create(cfg: config::ModuleConfig) -> Box<dyn BarModuleFn> {
+        Box::new(BarModuleDate { config: cfg })
     }
 
-    fn name() -> String {
-        String::from("date")
+    fn name() -> &'static str {
+        "date"
     }
 
-    fn instance(&self) -> String {
-        self.instance.clone()
+    fn instance(&self) -> &str {
+        &self.config.instance
     }
 
     fn build(&self) -> s::Block {
-        let d = chrono::Local::now().format("⏰ %F %X").to_string();
+        let text = chrono::Local::now().format(&self.config.format).to_string();
         s::Block {
-            name: Some(Self::name()),
-            instance: Some(self.instance.clone()),
-            full_text: d,
+            name: Some(Self::name().to_owned()),
+            instance: Some(self.config.instance.clone()),
+            full_text: text,
             align: Some(s::Align::Right),
             markup: Some(s::Markup::Pango),
             short_text: None,

src/bar/module/sysinfo.rs

@@ -15,6 +15,7 @@
 
 //! The date `swayrbar` module.
 
+use crate::bar::config;
 use crate::bar::module::BarModuleFn;
 use crate::fmt_replace::fmt_replace;
 use std::cell::RefCell;
@@ -25,18 +26,18 @@ use sysinfo::ProcessorExt;
 use sysinfo::SystemExt;
 
 pub struct BarModuleSysInfo {
-    pub instance: String,
+    config: config::ModuleConfig,
     system: RefCell<si::System>,
 }
 
-struct Updater {
+struct OnceRefresher {
     cpu: Once,
     memory: Once,
 }
 
-impl Updater {
-    fn new() -> Updater {
-        Updater {
+impl OnceRefresher {
+    fn new() -> OnceRefresher {
+        OnceRefresher {
             cpu: Once::new(),
             memory: Once::new(),
         }
@@ -51,15 +52,15 @@ impl Updater {
     }
 }
 
-fn get_cpu_usage(sys: &RefCell<si::System>, upd: &Updater) -> f32 {
+fn get_cpu_usage(sys: &RefCell<si::System>, upd: &OnceRefresher) -> f32 {
     upd.refresh_cpu(sys);
     sys.borrow().global_processor_info().cpu_usage()
 }
 
-fn get_memory_usage(sys: &RefCell<si::System>, upd: &Updater) -> f64 {
+fn get_memory_usage(sys: &RefCell<si::System>, upd: &OnceRefresher) -> f64 {
     upd.refresh_memory(sys);
     let sys = sys.borrow();
-    sys.used_memory() as f64 * 100 as f64 / sys.total_memory() as f64
+    sys.used_memory() as f64 * 100_f64 / sys.total_memory() as f64
 }
 
 #[derive(Debug)]
@@ -72,7 +73,7 @@ enum LoadAvg {
 fn get_load_average(
     sys: &RefCell<si::System>,
     avg: LoadAvg,
-    upd: &Updater,
+    upd: &OnceRefresher,
 ) -> f64 {
     upd.refresh_cpu(sys);
     let load_avg = sys.borrow().load_average();
@@ -84,28 +85,27 @@ fn get_load_average(
 }
 
 impl BarModuleFn for BarModuleSysInfo {
-    fn init() -> Box<dyn BarModuleFn> {
+    fn create(config: config::ModuleConfig) -> Box<dyn BarModuleFn> {
         Box::new(BarModuleSysInfo {
-            instance: "0".to_string(),
+            config,
             system: RefCell::new(si::System::new_all()),
         })
     }
 
-    fn name() -> String {
-        String::from("sysinfo")
+    fn name() -> &'static str {
+        "sysinfo"
     }
 
-    fn instance(&self) -> String {
-        self.instance.clone()
+    fn instance(&self) -> &str {
+        &self.config.instance
     }
 
     fn build(&self) -> s::Block {
-        let fmt = "💻 CPU: {cpu_usage:{:4.1}}% Mem: {mem_usage:{:4.1}}% Load: {load_avg_1:{:4.2}} / {load_avg_5:{:4.2}} / {load_avg_15:{:4.2}}";
-        let updater = Updater::new();
+        let updater = OnceRefresher::new();
         s::Block {
-            name: Some(Self::name()),
-            instance: Some(self.instance.clone()),
-            full_text: fmt_replace!(fmt, true, {
+            name: Some(Self::name().to_owned()),
+            instance: Some(self.config.instance.clone()),
+            full_text: fmt_replace!(&self.config.format, self.config.html_escape, {
                 "cpu_usage" => get_cpu_usage(&self.system, &updater),
                 "mem_usage" => get_memory_usage(&self.system, &updater),
                 "load_avg_1" => get_load_average(&self.system,
@@ -131,4 +131,12 @@ impl BarModuleFn for BarModuleSysInfo {
             separator_block_width: None,
         }
     }
+
+    fn default_config(instance: String) -> config::ModuleConfig {
+        config::ModuleConfig {
+            module_type: "sysinfo".to_owned(),
+            instance,
+            format: "💻 CPU: {cpu_usage:{:4.1}}% Mem: {mem_usage:{:4.1}}% Load: {load_avg_1:{:4.2}} / {load_avg_5:{:4.2}} / {load_avg_15:{:4.2}}".to_owned(),
+            html_escape: true }
+    }
 }

src/bar/module/window.rs

@@ -15,6 +15,7 @@
 
 //! The window `swayrbar` module.
 
+use crate::bar::config;
 use crate::bar::module::BarModuleFn;
 use crate::fmt_replace::fmt_replace;
 use crate::ipc;
@@ -22,40 +23,48 @@ use crate::ipc::NodeMethods;
 use swaybar_types as s;
 
 pub struct BarModuleWindow {
-    pub instance: String,
+    config: config::ModuleConfig,
 }
 
 impl BarModuleFn for BarModuleWindow {
-    fn init() -> Box<dyn BarModuleFn> {
-        Box::new(BarModuleWindow {
-            instance: "0".to_string(),
-        })
+    fn create(config: config::ModuleConfig) -> Box<dyn BarModuleFn> {
+        Box::new(BarModuleWindow { config })
     }
 
-    fn name() -> String {
-        String::from("window")
+    fn default_config(instance: String) -> config::ModuleConfig {
+        config::ModuleConfig {
+            module_type: Self::name().to_owned(),
+            instance,
+            format: "🪟 {title} — {app_name}".to_owned(),
+            html_escape: true,
+        }
+    }
+
+    fn name() -> &'static str {
+        "window"
     }
 
-    fn instance(&self) -> String {
-        self.instance.clone()
+    fn instance(&self) -> &str {
+        &self.config.instance
     }
 
     fn build(&self) -> s::Block {
-        let fmt = "🪟 {title} — {app_name}";
         let root = ipc::get_root_node(false);
         let focused_win = root
             .iter()
             .find(|n| n.focused && n.get_type() == ipc::Type::Window);
         let text = match focused_win {
-            Some(win) => fmt_replace!(&fmt, false, {
-                "title" |"name"  =>  win.get_name(),
-                "app_name" => win.get_app_name(),
-            }),
+            Some(win) => {
+                fmt_replace!(&self.config.format, self.config.html_escape, {
+                    "title" |"name"  =>  win.get_name(),
+                    "app_name" => win.get_app_name(),
+                })
+            }
             None => String::new(),
         };
         s::Block {
-            name: Some(Self::name()),
-            instance: Some(self.instance.clone()),
+            name: Some(Self::name().to_owned()),
+            instance: Some(self.config.instance.clone()),
             full_text: text,
             align: Some(s::Align::Left),
             markup: Some(s::Markup::Pango),

src/fmt_replace.rs

@@ -34,7 +34,7 @@ pub fn maybe_html_escape(do_it: bool, text: String) -> String {
 }
 
 macro_rules! fmt_replace {
-    ( $fmt_str:expr, $html_escape:ident,
+    ( $fmt_str:expr, $html_escape:expr,
       { $( $($pat:pat)|+ => $exp:expr, )+ }
     ) => {
         $crate::fmt_replace::PLACEHOLDER_RX