strip_c_comments_safe.sh: add processing of direct (non-chained) symlinks

strip_c_comments_safe.sh

@@ -108,6 +108,8 @@ if [[ ! -d "$TARGET_DIR" ]]; then
   exit 1
 fi
 
+TARGET_DIR=$(cd -- "$TARGET_DIR" && pwd)
+
 process_file() {
   local mode="$1"
   local file="$2"
@@ -432,8 +434,22 @@ if [[ "$WITH_CMAKE" -eq 1 ]]; then
   find_expr+=( -o -name "*.cmake" )
 fi
 
-find "$TARGET_DIR" -type f \( "${find_expr[@]}" \) -print0 |
+declare -A seen_files=()
+
 while IFS= read -r -d '' file; do
-  mode="$(detect_mode "$file")"
-  [[ -n "$mode" ]] && process_file "$mode" "$file"
-done
+  real_file="$file"
+  if [[ -L "$file" ]]; then
+    target=$(readlink "$file")
+    if [[ "$target" != /* ]]; then
+      dir="$(cd "$(dirname "$file")" && pwd -P)" || continue
+      target="$dir/$target"
+    fi
+    [[ -L "$target" ]] && continue
+    [[ ! -f "$target" ]] && continue
+    real_file="$target"
+  fi
+  [[ -n "${seen_files[$real_file]+x}" ]] && continue
+  seen_files[$real_file]=1
+  mode="$(detect_mode "$real_file")"
+  [[ -n "$mode" ]] && process_file "$mode" "$real_file"
+done < <(find "$TARGET_DIR" \( -type f -o -type l \) \( "${find_expr[@]}" \) -print0)