Class Main

src_cpp/src/main.cpp:24–76

namespace FakePDB {
    class Main {
    public:
        void AddCommand(std::shared_ptr<CommandInterface> i) {
            _commands.push_back(i);
        }

        int Run(int argc, char* argv[]) {
            if (argc < 2) {
                Usage();
                return 0;
            }

            std::string command_name = argv[1];
            for (auto& command : _commands) {
                //check name
                if (command->GetCommandName() != command_name) {
                    continue;
                }

                //check arg count
                if (argc-2 < command->GetArgsMin() || argc-2 > command->GetArgsMax()) {
                    std::cerr << "Invalid number of arguments" << std::endl;
                    for (auto& usage : command->GetCommandUsage()) {
                        std::cout << "Usage      : " << command->GetCommandName() << " " << usage << std::endl;
                    }
                }

                //run
                return command->Run(argc, argv);
            }

            std::cerr << "Command not found" << std::endl;
            Usage();
            return 1;
        }

        void Usage() {
            std::cout << "Available commands" << std::endl << std::endl;

            for (auto& command : _commands) {
                std::cout << "Name       : " << command->GetCommandName() << std::endl;
                std::cout << "Description: " << command->GetCommandDescription() << std::endl;
                for (auto& usage : command->GetCommandUsage()) {
                    std::cout << "Usage      : " << command->GetCommandName() << " " << usage << std::endl;
                }

                std::cout << std::endl;
            }
        }

    private:
        std::vector<std::shared_ptr<CommandInterface>> _commands;
    };
}