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;
}
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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;
}
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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;
}
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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