From a5749a5d8d38b0db2ce5548473f8a61b674578a6 Mon Sep 17 00:00:00 2001
From: namilsk <namilsk@namilsk.tech>
Date: Sat, 31 Jan 2026 21:26:26 +0300
Subject: Started writing service-utils and adding docstrings

---
 init/src/host/locale.rs | 21 +++++++++++++++++----
 1 file changed, 17 insertions(+), 4 deletions(-)

(limited to 'init/src/host/locale.rs')

diff --git a/init/src/host/locale.rs b/init/src/host/locale.rs
index 6dc43b2..d955297 100644
--- a/init/src/host/locale.rs
+++ b/init/src/host/locale.rs
@@ -1,9 +1,22 @@
+// NOTE: Ts file contains setting localisation by environment variables
+// Main logic implemented but how i think it can contain with broken logic or checks
+// At least if check failed it set C.UTF8 (fallback locale) 
+// And why is std::env::set_var unsafe????
+
 use crate::host::timezone::set_timezone;
 use crate::log::{log_success, log_warning};
 use std::fs;
 use std::io::Write;
 use std::process::Command;
 
+/// Main function which setting system locale.
+/// 
+/// Logic && Checks
+/// 1. Reading /etc/default/locale to find needed language. 
+/// If it broken/has syntax errors skipping this step
+/// 2. Checking for locale avalible (also switching `-` and `_`), 
+/// if not uses fallback locale. 
+/// 
 pub fn set_locale(locale: Option<String>) -> Result<(), Box<dyn std::error::Error>> {
     let loc = match locale {
         Some(l) => l,
@@ -23,10 +36,10 @@ pub fn set_locale(locale: Option<String>) -> Result<(), Box<dyn std::error::Erro
                 }
             }
 
-            if let Ok(lang_env) = std::env::var("LANG") 
-                && !lang_env.is_empty() {
-                    return set_system_locale(&lang_env);
-                
+            if let Ok(lang_env) = std::env::var("LANG")
+                && !lang_env.is_empty()
+            {
+                return set_system_locale(&lang_env);
             }
             if locale_exists("C.UTF-8") {
                 "C.UTF-8".to_string()
-- 
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