本篇博客主要介绍一个 c++ 命令行参数工具

简介

• args

安装

• 安装教程
• 其实只需要导入 args.hxx 文件即可
• 当作依赖放到 dep 目录中，在项目中使用，具体如何导入请看这儿

使用

• 使用教程

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  #include<iostream> #include<args/args.hxx> int main(int argc, char** argv) { args::ArgumentParser parser("This is a test program.", "This goes after the options."); args::HelpFlag help(parser, "help", "Display this help menu", { 'h', "help" }); args::ValueFlag<bool> bar(parser, "flag", "flag", { 'b' }); args::ValueFlag<int> integer(parser, "port", "The http port", { 'i' }); args::ValueFlagList<char> characters(parser, "char list", "The character flag", { 'c' }); args::Positional<std::string> foo(parser, "string", "The foo position", { 'h' }); args::PositionalList<double> numbers(parser, "numbers", "The numbers position list", { 'd' }); // start parse argument list try { parser.ParseCLI(argc, argv); } catch (args::Help & help) { std::cout << parser << ", error = " << help.what() << std::endl; return false; } catch (args::ParseError & e) { std::cout << parser << ", error = " << e.what() << std::endl; return false; } catch (args::ValidationError & e) { std::cout << parser << ", error = " << e.what() << std::endl; return false; } if (bar) { std::cout << "bar" << std::endl; } if (integer) { std::cout << "i: " << args::get(integer) << std::endl; } if (characters) { for (const auto ch : args::get(characters)) { std::cout << "c: " << ch << std::endl; } } if (foo) { std::cout << "f: " << args::get(foo) << std::endl; } if (numbers) { for (const auto nm : args::get(numbers)) { std::cout << "n: " << nm << std::endl; } } return 0; }