-XBT_PRIVATE FILE* surf_fopen(const char* name, const char* mode);
-XBT_PRIVATE std::ifstream* surf_ifsopen(std::string name);
-
-/* The __surf_is_absolute_file_path() returns 1 if
- * file_path is a absolute file path, in the other
- * case the function returns 0.
- */
-XBT_PRIVATE int __surf_is_absolute_file_path(const char* file_path);
+XBT_PRIVATE FILE* surf_fopen(const std::string& name, const char* mode);
+XBT_PRIVATE std::ifstream* surf_ifsopen(const std::string& name);