diff --git a/src/Rules.cpp b/src/Rules.cpp
index c0352838..1a64677d 100644
--- a/src/Rules.cpp
+++ b/src/Rules.cpp
@@ -333,3 +333,13 @@ void Rules::parseRuleTag (const std::vector <std::string>& lines)
 }
 
 ////////////////////////////////////////////////////////////////////////////////
+unsigned int Rules::getIndentation (const std::string& line)
+{
+  auto indent = line.find_first_not_of (" ");
+  if (indent == std::string::npos)
+    indent = 0;
+
+  return indent;
+}
+
+////////////////////////////////////////////////////////////////////////////////
diff --git a/src/Rules.h b/src/Rules.h
index 15f9ada3..75e37dc1 100644
--- a/src/Rules.h
+++ b/src/Rules.h
@@ -61,6 +61,8 @@ private:
   void parseRuleExclusions (const std::vector <std::string>&);
   void parseRuleTag        (const std::vector <std::string>&);
 
+  unsigned int getIndentation (const std::string&);
+
 private:
   std::string                         _original_file {};
   std::map <std::string, std::string> _settings      {};