C++: Parses curly braces values

BraceParser.cpp

#include <iostream>
#include <regex>
#include <string>
#include <vector>
#include <sstream>
#include <map>

std::vector<std::string> split(const std::string& s, char delimiter)
{
	std::vector<std::string> tokens;
	std::string token;
	std::istringstream tokenStream(s);
	while (std::getline(tokenStream, token, delimiter))
	{
		tokens.push_back(token);
	}
	return tokens;
}

int main()
{
	std::string sentence{ "Something is hello {foo=6,bar=5}" };
	std::regex within_curly_brace_regex(R"(\{([^}]+)\})");
	std::smatch matched_value;
	std::map<std::string, std::string> variable_to_value;
	if (std::regex_search(sentence, matched_value, within_curly_brace_regex)) {
		auto curly_value = matched_value[1];
		auto split_variable_with_value = split(curly_value, ',');
		for (const auto& variable_with_value : split_variable_with_value)
		{
			auto splitValues = split(variable_with_value, '=');
			if (splitValues.size() == 2U)
			{
				variable_to_value.insert(std::pair<std::string, std::string>(splitValues[0], splitValues[1]));
			}
		}
	}

	for (const auto& variable_with_value : variable_to_value)
	{
		std::cout << variable_with_value.first << "   " << variable_with_value.second << std::endl;
	}

	return 0;
}