Method parse

src/tscore/ArgParser.cc:149–197

Top level call of parsing

// Top level call of parsing
Arguments
ArgParser::parse(const char **argv)
{
  // deal with argv first
  int size = 0;
  _argv.clear();
  while (argv[size]) {
    _argv.push_back(argv[size]);
    size++;
  }
  if (size == 0) {
    std::cout << "Error: invalid argv provided" << std::endl;
    exit(1);
  }
  // the name of the program only
  _argv[0]                 = _argv[0].substr(_argv[0].find_last_of('/') + 1);
  _top_level_command._name = _argv[0];
  _top_level_command._key  = _argv[0];
  parser_program_name      = _argv[0];
  Arguments ret; // the parsed arg object to return
  AP_StrVec args = _argv;
  // call the recursive parse method in Command
  if (!_top_level_command.parse(ret, args)) {
    // deal with default command
    if (!default_command.empty()) {
      args = _argv;
      args.insert(args.begin() + 1, default_command);
      _top_level_command.parse(ret, args);
    }
  };
  // if there is anything left, then output usage
  if (!args.empty()) {
    std::string msg = "Unknown command, option or args:";
    for (const auto &it : args) {
      msg = msg + " '" + it + "'";
    }
    // find the correct level to output help message
    ArgParser::Command *command = &_top_level_command;
    for (unsigned i = 1; i < _argv.size(); i++) {
      auto it = command->_subcommand_list.find(_argv[i]);
      if (it == command->_subcommand_list.end()) {
        break;
      }
      command = &it->second;
    }
    command->help_message(msg);
  }
  return ret;
}

ArgParser::Command &
ArgParser::require_commands()