Class CommandLine

tutorials/common/tutorial/benchmark.cpp:27–60

///////////////////////////////////////// util functions for command line handling // /////////////////////////////////////////

// util functions for command line handling //
//////////////////////////////////////////////
struct CommandLine
{
  typedef std::unordered_set<std::unique_ptr<std::string>> StringPool;
  typedef std::unordered_set<std::unique_ptr<std::vector<char*>>> CommandLinePool;

  static StringPool string_pool;
  static CommandLinePool command_line_pool;

  CommandLine() : cl(nullptr) { }

  CommandLine(int argc, char** argv) : cl(nullptr)
  {
    auto cl_iter = command_line_pool.emplace(std::unique_ptr<std::vector<char*>>(new std::vector<char*>()));
    cl = cl_iter.first->get();
    for (size_t i = 0; i < argc; ++i) {
      auto pair = string_pool.emplace(std::unique_ptr<std::string>{new std::string(argv[i])});
      cl->emplace_back(&(*pair.first->get())[0]);
    }
  }

  void add(std::vector<std::string> const& args)
  {
    for (std::string const& str : args) {
      auto pair = string_pool.emplace(std::unique_ptr<std::string>{new std::string(str)});
      cl->emplace_back(&(*pair.first->get())[0]);
    }
  }

  int argc() { return cl->size(); }
  char** argv() { return cl->data(); }

private:
  std::vector<char*>* cl;
};

CommandLine::StringPool CommandLine::string_pool;
CommandLine::CommandLinePool CommandLine::command_line_pool;