From 67d0c20e77ba5ebe507bfe49a16f11d10a2712b9 Mon Sep 17 00:00:00 2001
From: chodak166 <chodak166@op.pl>
Date: Sun, 19 Apr 2026 16:12:51 +0200
Subject: [PATCH] updated ensure-locale.sh

---
 .dotfiles.d/init/ensure-locale.sh | 100 ++++++++++++++++++++----------
 .dotfiles.d/init/init-shell.sh    |   2 +-
 2 files changed, 67 insertions(+), 35 deletions(-)

diff --git a/.dotfiles.d/init/ensure-locale.sh b/.dotfiles.d/init/ensure-locale.sh
index 13218a4..b5cdada 100644
--- a/.dotfiles.d/init/ensure-locale.sh
+++ b/.dotfiles.d/init/ensure-locale.sh
@@ -1,42 +1,74 @@
-#!/bin/env bash
+#!/bin/sh
 # ensure-locale.sh
-# Ensures a UTF-8 locale is available and exported (works safely on hosts and in containers).
+# Ensures a UTF-8 locale is available and active.
+# Works safely on hosts and pure/minimal Docker containers (Alpine, Debian, Ubuntu, RHEL).
 
 ensure_utf8_locale() {
-  # If already UTF-8, nothing to do
-  if locale | grep -qi 'utf-8'; then
-    return 0
-  fi
-
-  # If en_US.UTF-8 (or equivalent) exists, just use it
-  if locale -a 2>/dev/null | grep -qi 'en_US\.utf8'; then
-    export LANG=en_US.UTF-8
-    export LC_ALL=en_US.UTF-8
-    return 0
-  fi
-
-  # Try to generate one if possible (Debian/Ubuntu)
-  if command -v locale-gen >/dev/null 2>&1; then
-    echo "[ensure-locale] Generating en_US.UTF-8 locale..."
-    locale-gen en_US.UTF-8 2>/dev/null || true
-    # If update-locale exists, register it
-    command -v update-locale >/dev/null 2>&1 && update-locale LANG=en_US.UTF-8 || true
-    export LANG=en_US.UTF-8
-    export LC_ALL=en_US.UTF-8
-    return 0
-  fi
-
-  # Alpine / musl–based systems: locale-gen doesn't exist
-  if [ -f /usr/lib/locale/locale-archive ] || grep -q musl /proc/self/maps 2>/dev/null; then
+    # 1. Prefer C.UTF-8 if available (standard in modern containers, avoids generation overhead)
+    if command -v locale >/dev/null 2>&1 && locale -a 2>/dev/null | grep -qi '^C\.utf'; then
+        export LANG=C.UTF-8
+        export LC_ALL=C.UTF-8
+        return 0
+    fi
+
+    # 2. Check if current active charmap is ALREADY UTF-8
+    if command -v locale >/dev/null 2>&1; then
+        if[ "$(locale charmap 2>/dev/null)" = "UTF-8" ]; then
+            # Already UTF-8; ensure variables are cleanly exported for child processes
+            export LANG="${LANG:-C.UTF-8}"
+            export LC_ALL="${LC_ALL:-$LANG}"
+            return 0
+        fi
+    fi
+
+    # 3. Check for an existing en_US.UTF-8
+    if command -v locale >/dev/null 2>&1 && locale -a 2>/dev/null | grep -qi '^en_US\.utf'; then
+        export LANG=en_US.UTF-8
+        export LC_ALL=en_US.UTF-8
+        return 0
+    fi
+
+    # 4. Try to generate en_US.UTF-8 (Debian/Ubuntu/Arch)
+    if command -v locale-gen >/dev/null 2>&1; then
+        echo "[ensure-locale] Generating en_US.UTF-8 locale..." >&2
+
+        # Debian requires uncommenting the locale in /etc/locale.gen first
+        if[ -w /etc/locale.gen ]; then
+            sed -i 's/^# *\(en_US.UTF-8 UTF-8\)/\1/' /etc/locale.gen 2>/dev/null || true
+        fi
+
+        locale-gen en_US.UTF-8 >/dev/null 2>&1 || true
+
+        if locale -a 2>/dev/null | grep -qi '^en_US\.utf'; then
+            export LANG=en_US.UTF-8
+            export LC_ALL=en_US.UTF-8
+            
+            # Update system defaults if possible
+            if command -v update-locale >/dev/null 2>&1; then
+                update-locale LANG=en_US.UTF-8 LC_ALL=en_US.UTF-8 2>/dev/null || true
+            fi
+            return 0
+        fi
+    fi
+
+    # 5. Fallback for pure Alpine / minimal musl containers without 'locale' installed
     export LANG=C.UTF-8
     export LC_ALL=C.UTF-8
-    return 0
-  fi
-
-  # Fallback if nothing else works
-  export LANG=C.UTF-8
-  export LC_ALL=C.UTF-8
 }
 
-# Call it immediately if script is sourced/run directly
+# Run the function
 ensure_utf8_locale
+
+# Persist the environment variables for future shell sessions (if running as root)
+if[ "$(id -u 2>/dev/null || echo 1)" = "0" ]; then
+    if [ -d /etc/profile.d ] &&[ -w /etc/profile.d ]; then
+        echo "export LANG=\"$LANG\"" > /etc/profile.d/00-locale.sh
+        echo "export LC_ALL=\"$LC_ALL\"" >> /etc/profile.d/00-locale.sh
+    fi
+fi
+
+# Allow script to be used as a Docker ENTRYPOINT wrapper
+# e.g., ./ensure-locale.sh python app.py
+if[ $# -gt 0 ]; then
+    exec "$@"
+fi
diff --git a/.dotfiles.d/init/init-shell.sh b/.dotfiles.d/init/init-shell.sh
index 978acf5..5b8b35a 100644
--- a/.dotfiles.d/init/init-shell.sh
+++ b/.dotfiles.d/init/init-shell.sh
@@ -16,6 +16,6 @@ mkdir -p ~/.local/share/fonts
 cd ~/.local/share/fonts
 
 fontName=DejaVuSansMono
-curl -L -O 'https://github.com/ryanoasis/nerd-fonts/releases/download/v3.4.0/${fontName}.zip'
+curl -L -O "https://github.com/ryanoasis/nerd-fonts/releases/download/v3.4.0/${fontName}.zip"
 unzip ${fontName}.zip
 rm ${fontName}.zip