Method read

include/jsoncons/source.hpp:715–729

        }

        std::size_t read(value_type* p, std::size_t length)
        {
            std::size_t len;
            if (std::size_t(end_ - current_) < length)
            {
                len = end_ - current_;
            }
            else
            {
                len = length;
            }
            std::memcpy(p, current_, len*sizeof(value_type));
            current_  += len;
            return len;
        }
    };

    // binary_iterator source