Recursive directory file finder

recursive_directory_finder.cpp

void filelist(const std::string& path, const std::string& match_str, std::function<void(std::string, std::string)> f) {
	std::regex re(match_str);
	auto it = std::filesystem::recursive_directory_iterator(path, std::filesystem::directory_options::skip_permission_denied);
	auto it_end = std::filesystem::end(it);
	while (it != it_end) {
		try {
			auto dir_entry = *it;
			if (dir_entry.is_regular_file()) {
				auto filename = dir_entry.path().filename().string();
				auto folder = dir_entry.path().parent_path().string();
				if (std::regex_match(filename, re))
					f(folder, filename);
			}
		}
		catch (std::filesystem::filesystem_error& e) {
			std::cout << "Error! File skipped due to " << e.what() << "\n";
		}
		try {
			++it;
		}
		catch (std::filesystem::filesystem_error& e) {
			std::cout << "Error! " << e.what() << "\n";
		}
	}
	std::cout << "filelist done!\n";
}