added support for language files

src/macros.rs

@@ -34,4 +34,40 @@ macro_rules! errln {
     );
     std::process::exit(1);
   };
+}
+
+
+#[macro_export]
+macro_rules! lang {
+  ($key:expr) => {
+    {
+      use crate::{LANG, errln};
+      let value = unsafe {
+        LANG
+          .as_ref()
+          .expect("LANG must be initialized before use")
+          .get($key)
+      };
+
+      if value.is_none() { errln!("Key not found in LANG JSON: \"{}\"", $key); }
+
+      value.unwrap().as_str().expect("LANG JSON value is not a string!").to_string()
+    }
+  };
+  ($key:expr, $($arg:expr),*) => {{
+    use crate::{LANG, errln};
+    use formatx::formatx;
+
+    let value = unsafe {
+      LANG
+        .as_ref()
+        .expect("LANG must be initialized before use")
+        .get($key)
+    };
+
+    if value.is_none() { errln!("Key not found in LANG JSON: \"{}\"", $key); }
+
+    let format_str = value.unwrap().as_str().expect("LANG JSON value is not a string!");
+    formatx!(format_str, $($arg),*).unwrap()
+  }};
 }