feat: add bds core, locale updates and safety fixes

lib/i18n.sh

@@ -0,0 +1,50 @@
+#!/usr/bin/env bash
+
+LOCALE_DIRECTORY="${SCRIPT_DIR}/locales"
+
+load_locale() {
+  case "${LOCALE,,}" in
+    ru*|ru_*)
+      LOCALE="ru"
+      ;;
+    en*|en_*)
+      LOCALE="en"
+      ;;
+    *)
+      if [[ "${LANGUAGE:-${LANG:-}}" == ru* ]]; then
+        LOCALE="ru"
+      else
+        LOCALE="en"
+      fi
+      ;;
+  esac
+
+  case "$LOCALE" in
+    ru)
+      LOCALE_FILE="$LOCALE_DIRECTORY/ru.sh"
+      ;;
+    *)
+      LOCALE_FILE="$LOCALE_DIRECTORY/en.sh"
+      ;;
+  esac
+
+  if [[ ! -f "$LOCALE_FILE" ]]; then
+    LOCALE="en"
+    LOCALE_FILE="$LOCALE_DIRECTORY/en.sh"
+  fi
+
+  # shellcheck source=/dev/null
+  . "$LOCALE_FILE"
+}
+
+t() {
+  local key="$1"
+  shift || true
+
+  local fn="locale_msg_${key}"
+  if declare -F "$fn" >/dev/null 2>&1; then
+    "$fn" "$@"
+  else
+    echo "$key"
+  fi
+}