Function interpolate_string

src/include/migraphx/stringutils.hpp:139–161

template <class F>
inline std::string
interpolate_string(const std::string& input, F f, std::string start = "${", std::string end = "}")
{
    std::string result = "";
    result.reserve(input.size());
    auto it = input.begin();
    while(it != input.end())
    {
        auto next_start = std::search(it, input.end(), start.begin(), start.end());
        auto next_end   = std::search(next_start, input.end(), end.begin(), end.end());
        result.append(it, next_start);
        if(next_start == input.end())
            break;
        if(next_end == input.end())
        {
            throw std::runtime_error("Unbalanced brackets");
        }
        auto r = f(next_start + start.size(), next_end);
        result.append(r.begin(), r.end());
        it = next_end + end.size();
    }
    return result;
}
inline std::string interpolate_string(const std::string& input,
                                      const std::unordered_map<std::string, std::string>& vars,
                                      std::string start = "${",