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cxxopts

Lightweight C++ command-line option parser for building CLI applications

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Lightweight C++ command-line option parser

Examples

parse command line arguments in C++ program

$ #include <cxxopts.hpp>
cxxopts::Options options("program");
options.add_options()("h,help", "Print help");

add required and optional flags to CLI tool

$ options.add_options()("input,i", "Input file", cxxopts::value<std::string>())("verbose,v", "Enable verbose mode", cxxopts::value<bool>()->default_value("false"));

parse arguments and handle errors

$ auto result = options.parse(argc, argv);
if (result.count("help")) { std::cout << options.help() << std::endl; }

validate and access parsed command line values

$ std::string input = result["input"].as<std::string>();
bool verbose = result["verbose"].as<bool>();

display help message with all available options$ std::cout << options.help() << std::endl;