第一次尝试
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#include <iostream> #include <boost/program_options.hpp> // 定义命名空间 namespace opt = boost::program_options; int main( int argc, char const *argv[]) { opt::options_description desc( "Usage: 32位端口快速扫描器\n\n options: \n" ); desc.add_options() ( "Address,a" , opt::value<std::string>()->default_value( "127.0.0.1" ), "输入一个IP地址" ), ( "StartPort,s" , opt::value< int >()->default_value(1024), "传入扫描起始端口" ), ( "EndPort,e" , opt::value< int >()->default_value(65535), "传入扫描结束端口" ), ( "Help,h" , "弹出帮助菜单" ); // 解析参数将值传递给virtual_map opt::variables_map virtual_map; try { opt::store(opt::parse_command_line(argc, argv, desc), virtual_map); } catch (...) { std::cout << "error \n" ; return 0; } // 参数解析完毕,处理 if (virtual_map.count( "Help" )) { printf ( "帮助" ); } if (virtual_map.count( "Address" )) { std::cout << "找到" << virtual_map[ "Address" ].as<std::string>() << std::endl; } if (virtual_map.empty()) { std::cout << "no options\n" ; } return 0; } |
第二次尝试
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#include <iostream> #include <vector> #include <string> #include <boost/program_options.hpp> namespace opt = boost::program_options; int main( int argc, char const *argv[]) { int start_port = 1024, end_port = 65535; std::vector<std::string> address; opt::options_description opt( "\nUsage: 32位端口快速扫描器 Ver:1.0 \n\n options: \n" ); opt.add_options() ( "address,a" , opt::value<std::vector<std::string> >()->multitoken(), "指定地址" ) ( "start_port,s" , opt::value< int >(&start_port)->default_value(1024), "开始端口" ) ( "end_port,e" , opt::value< int >(&end_port)->default_value(65535), "结束端口" ) ( "help" , "帮助菜单" ); opt::variables_map vm; try { opt::store(parse_command_line(argc, argv, opt), vm); } catch (...){ std::cout << "command error!\n" ; return 0; } opt::notify(vm); if (vm.count( "help" )) { std::cout << opt << std::endl; return 0; } if (vm.count( "address" ) && vm.count( "start_port" ) && vm.count( "end_port" )) { //遍历选项值 for (auto& str : vm[ "address" ].as<std::vector<std::string> >()) std::cout << str << " " ; int x = vm[ "start_port" ].as< int >(); std::cout << x << std::endl; } return 0; } |
最终版
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#include <iostream> #include <boost/program_options.hpp> namespace opt = boost::program_options; int main( int argc, char const *argv[]) { opt::options_description des_cmd( "\n Usage: 32位端口快速扫描器 Ver:1.0 \n\n Options: \n" ); des_cmd.add_options() ( "address,a" , opt::value<std::string>()->default_value( "127.0.0.1" ), "指定地址" ) ( "start_port,s" , opt::value< int >()->default_value(1024), "开始端口" ) ( "end_port,e" , opt::value< int >()->default_value(65535), "结束端口" ) ( "help,h" , "帮助菜单" ); opt::variables_map virtual_map; try { opt::store(opt::parse_command_line(argc, argv, des_cmd), virtual_map); } catch (...){ return 0; } // 定义消息 opt::notify(virtual_map); // 无参数直接返回 if (virtual_map.empty()) { return 0; } else if (virtual_map.count( "help" ) || virtual_map.count( "h" )) { std::cout << des_cmd << std::endl; return 0; } else if (virtual_map.count( "address" ) && virtual_map.count( "start_port" ) && virtual_map.count( "end_port" )) { std::cout << "Addr = " << virtual_map[ "address" ].as<std::string>() << std::endl; std::cout << "StartPort = " << virtual_map[ "start_port" ].as< int >() << std::endl; std::cout << "EndPort = " << virtual_map[ "end_port" ].as< int >() << std::endl; } else { std::cout << "option error" << std::endl; } return 0; } |
命令行下使用help输出帮助菜单,当传入三个参数时,即可解析到第二个判断上,执行相应的函数即可。
文章出处:https://www.cnblogs.com/lyshark
以上就是C++基于Boost库实现命令行解析的详细内容,更多关于C++ Boost库实现命令行解析的资料请关注服务器之家其它相关文章!
原文链接:https://www.cnblogs.com/LyShark/p/14454024.html