a little optim

Cargo.toml

@@ -5,7 +5,6 @@ authors = ["mustafa salih <mustafasalih1991@gmail.com>"]
 edition = "2018"
 readme = "README.md"
 license = "MIT"
-license-file = "LICENSE"
 repository = "https://github.com/MustafaSalih1993/rsblocks"
 description = "This is a minimal status bar for dwm window manager for linux"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

src/sound.rs

@@ -6,20 +6,20 @@ use std::process::Command;
 
 pub fn get_sound(setting: &Settings) -> String {
     let cmd_content = Command::new("amixer")
-        .arg("get")
-        .arg("Master")
+        .args(&["-D", "pulse", "get", "Master"])
         .output()
-        .unwrap();
+        .expect("Make sure that you have alsa-utils installed on your system");
 
-    let mut vol: String = String::from_utf8_lossy(&cmd_content.stdout)
+    let vol: String = String::from_utf8_lossy(&cmd_content.stdout)
         .lines()
         .last()
         .expect("failed to get sound volume")
         .split('[')
         .collect::<Vec<&str>>()[1]
+        .split(']')
+        .collect::<Vec<&str>>()[0]
         .trim()
         .to_string();
-    vol.remove(vol.len() - 1);
 
     format!("  {}  {}  {}", setting.volume.icon, vol, setting.seperator)
 }