Function parse_column_names

include/jsoncons_ext/csv/csv_options.hpp:64–114

template <typename CharT,typename Container>
void parse_column_names(const std::basic_string<CharT>& names, 
                        Container& cont)
{
    column_state state = column_state::sequence;
    typename Container::value_type buffer(cont.get_allocator());

    auto p = names.begin();
    while (p != names.end())
    {
        switch (state)
        {
            case column_state::sequence:
            {
                switch (*p)
                {
                    case ' ': case '\t':case '\r': case '\n':
                        ++p;
                        break;
                    default:
                        buffer.clear();
                        state = column_state::label;
                        break;
                }
                break;
            }
            case column_state::label:
            {
                switch (*p)
                {
                case ',':
                    cont.push_back(buffer);
                    buffer.clear();
                    ++p;
                    state = column_state::sequence;
                    break;
                default:
                    buffer.push_back(*p);
                    ++p;
                    break;
                }
                break;
            }
        }
    }
    if (state == column_state::label)
    {
        cont.push_back(buffer);
        buffer.clear();
    }

} // namespace detail

template <typename CharT,typename Container>
void parse_column_types(const std::basic_string<CharT>& types,