main: lazy_static prototyping, env handling

Signed-off-by: Ralf Zerres <ralf.zerres@networkx.de>

advotracker/src/main.rs

@@ -5,11 +5,12 @@
  * SPDX-License-Identifier: (0BSD or MIT)
  */
 
-//#[macro_use]
-//extern crate lazy_static;
 // suppress creation of a new console window on window
 #![windows_subsystem = "windows"]
 
+//#[macro_use]
+//extern crate lazy_static;
+
 //use chrono::{Local, DateTime};
 use locales::t;
 //use serde::{Deserialize, Serialize};
@@ -35,12 +36,30 @@ mod parse_args;
 #[derive(Debug, Deserialize)]
 struct Environment {
     test_lang: String,
-    log: String,
+    rust_log: String,
 }
 
 //#[cfg(feature = "light-theme")]
 static STYLESHEET: &'static str = include_str!("../resources/stylesheets/advotracker.css");
 
+// lazy_static! {
+//     static ref LANG: String + 'static = {
+//         let mut lang = env::var("LANG").unwrap_or("en".to_string())
+//     };
+//     static ref TEST_LANG: String + 'static = {
+//         let mut test_lang = {
+//             // testing environment: read from .env file
+//             dotenv().ok();
+//             match envy::from_env::<Environment>() {
+//                 Ok(environment) => {
+//                     if environment.test_lang != lang { lang = environment.test_lang; }
+//                 },
+//                 Err(e) => { debug!(target: "advotracker", "{}", e); }
+//             }
+//         }
+//     };
+// }
+
 fn get_theme() -> ThemeValue {
     ThemeValue::create_from_css(DEFAULT_THEME_CSS)
     //ThemeValue::create_from_css(LIGHT_THEME_EXTENSION_CSS)
@@ -73,7 +92,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
 
     // respect dotenv environment (e.g for testing)
     // -> overwrites the preset default values
-    let log = dotenv::var("RUST_LOG").unwrap_or_else(|_| String::from("None"));
+    let rust_log = dotenv::var("RUST_LOG").unwrap_or_else(|_| String::from("None"));
 
     // initialize the tracing subsystem
     // a drop in replacement for classical logging
@@ -82,7 +101,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
     let span = tracing::span!(Level::TRACE, "advotracker");
     let _enter = span.enter();
     let subscriber = fmt::Subscriber::builder()
-        .with_env_filter(&log)
+        .with_env_filter(&rust_log)
         //.with_max_level(tracing::Level::DEBUG)
         .finish();
 
@@ -113,10 +132,6 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
         // initialize viperus structure
         let mut viperus = Viperus::new();
 
-        // lazy_static! {
-        //     static ref VIPERUS: Viperus + 'static = { let mut viperus = Viperus::new(); };
-        //     static ref VIPERUS_COUNT: usize = VIPERUS.len();
-        // }
         // lazy_static! {
         //     static ref HASHMAP: HashMap<usize, PolicyCode> = {
         //         let mut policy_numbers = HashMap::new();
@@ -180,8 +195,6 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
         //     },
         //}
 
-
-
         Application::from_name("nwx.advotracker")
             .window(move |ctx| {
                 Window::new()