added utils

src/utils.hpp

@@ -0,0 +1,21 @@
+#include <set>
+#include <string>
+
+// trim string in-place, removing all whitespaces
+void trim(std::string &str);
+
+// Convert a string containing an inline YAML/JSON-style list of strings
+// into a std::set<std::string>.
+//
+// Supported format (single line):
+//   ["haha", "dupa", "xdd"]
+//
+// Limitations:
+// - no nested structures
+// - no escaping inside strings
+// - elements must be quoted
+//
+// Example:
+//   Input:  ["haha", "dupa", "xdd"]
+//   Output: {"dupa", "haha", "xdd"}   // sorted, unique
+std::set<std::string> convert_string_to_set(std::string input);