Add JV_LANG environment variable support and improve CLI structure

1 files changed, 28 insertions, 0 deletions

diff --git a/src/utils/env.rs b/src/utils/env.rs
new file mode 100644
index 0000000..028995e
--- /dev/null
+++ b/src/utils/env.rs
@@ -0,0 +1,28 @@
+// /// Returns the current locale string based on environment variables.
+///
+/// The function checks for locale settings in the following order:
+/// 1. JV_LANG environment variable
+/// 2. APP_LANG environment variable
+/// 3. LANG environment variable (extracts base language before dot and replaces underscores with hyphens)
+/// 4. Defaults to "en" if no locale environment variables are found
+///
+/// # Returns
+/// A String containing the detected locale code
+pub fn current_locales() -> String {
+    if let Ok(lang) = std::env::var("JV_LANG") {
+        return lang;
+    }
+
+    if let Ok(lang) = std::env::var("APP_LANG") {
+        return lang;
+    }
+
+    if let Ok(lang) = std::env::var("LANG") {
+        if let Some(base_lang) = lang.split('.').next() {
+            return base_lang.replace('_', "-");
+        }
+        return lang;
+    }
+
+    "en".to_string()
+}