Added memory module

src/bar_modules/bar_module_memory.rs

@@ -0,0 +1,70 @@
+use std::fs::File;
+use std::path::Path;
+use std::io::prelude::*;
+use regex::Regex;
+
+use crate::common;
+use crate::bar_modules;
+
+#[derive(Clone)]
+pub struct UnibarModuleMemory {
+    opts:           common::AppOptions,
+    meminfo_str:    String,
+}
+
+impl UnibarModuleMemory {
+
+    // --------------------
+    pub fn new(o :common::AppOptions) -> Self {
+        UnibarModuleMemory {
+            opts: o,
+            meminfo_str: "".to_string(),
+        }
+    }
+}
+
+impl bar_modules::BarModuleActions for UnibarModuleMemory {
+
+    // --------------------
+    fn generate_data(&mut self) {
+        let path = Path::new("/proc/meminfo");
+
+        // Contents of '/process/meminfo' has memory information
+        let mut meminfo_file = match File::open(&path) {
+            Err(why) => panic!("couldn't open {}: {}", path.display(), why),
+            Ok(file) => file,
+        };
+
+        match meminfo_file.read_to_string(&mut self.meminfo_str) {
+            Err(why) => panic!("couldn't read {}: {}", path.display(), why),
+            Ok(_) => if self.opts.debug_json {
+                println!("-----> meminfo - {:#?}", self.meminfo_str);
+            },
+        };
+        self.meminfo_str.pop();
+
+    }
+
+    // --------------------
+    // MemTotal:        7822812 kB\nMemFree:          399244 kB\nMemAvailable:    3986504 kB
+    fn get_content(&self) -> String {
+        let re = Regex::new(r"MemTotal:\s+(\d+)\s+kB\nMemFree:\s+(\d+)").unwrap();
+        let caps = re.captures(self.meminfo_str.as_str()).unwrap();
+
+        let total_mem :f32 = caps.get(1).unwrap().as_str().parse::<f32>().unwrap();
+        let free_mem :f32 = caps.get(2).unwrap().as_str().parse::<f32>().unwrap();
+        return format!("{}%", ((total_mem - free_mem)/total_mem * 100.0).ceil() as i32);
+    }
+
+    // --------------------
+    fn get_icon(&self) -> String {
+        return "💾".to_string();
+    }
+}
+
+impl bar_modules::BarModuleDebug for UnibarModuleMemory {
+
+    // --------------------
+    fn post_debug(&self) {
+    }
+}

src/bar_modules/mod.rs

@@ -20,3 +20,4 @@ pub trait BarModuleDebug {
 pub mod bar_module_weather;
 pub mod bar_module_music;
 pub mod bar_module_network;
+pub mod bar_module_memory;

src/main.rs

@@ -54,6 +54,7 @@ impl Unibar {
         // Set up a list of all modules to be used
         let bar_modules_enabled: Vec<Box<dyn bar_modules::BarModuleActions>> = vec! [
             Box::new(bar_modules::bar_module_music::UnibarModuleMusic::new(self.opts.clone())),
+            Box::new(bar_modules::bar_module_memory::UnibarModuleMemory::new(self.opts.clone())),
             Box::new(bar_modules::bar_module_network::UnibarModuleNetwork::new(self.opts.clone())),
             Box::new(bar_modules::bar_module_weather::UnibarModuleWeather::new(self.opts.clone())),
         ];
@@ -82,6 +83,7 @@ impl Unibar {
             let bar_modules_debugged: Vec<Box<dyn bar_modules::BarModuleDebug>> = vec! [
                 Box::new(bar_modules::bar_module_weather::UnibarModuleWeather::new(self.opts.clone())),
                 Box::new(bar_modules::bar_module_music::UnibarModuleMusic::new(self.opts.clone())),
+                Box::new(bar_modules::bar_module_memory::UnibarModuleMemory::new(self.opts.clone())),
                 Box::new(bar_modules::bar_module_network::UnibarModuleNetwork::new(self.opts.clone())),
             ];
             for md in bar_modules_debugged {