args

Args

Simple C++ library for parse command line arguments, in Python's argparse style.

Automatically present the help message if no arguments or -h or --help is given.

Example

In you can find an usage example in main.cpp.

A minimal example:

using namespace Args;

struct {
    std::string rom {};
    bool serial {};
    float scaling {};
    bool dump_cartridge_info {};
} args;

Parser parser;
parser.add_argument(args.rom, "rom").help("ROM");
parser.add_argument(args.serial, "--serial", "-s").help("Display serial console");
parser.add_argument(args.scaling, "--scaling", "-z").help("Scaling factor");
parser.add_argument(args.dump_cartridge_info, "--cartridge-info", "-i").help("Dump cartridge info and quit");

if (!parser.parse(argc, argv, 1))
    return 1;

// You can use `args` here

The produced help message for the example above:

usage: rom [--serial] [--scaling SCALING] [--cartridge-info] [--help]

positional arguments:
  rom                    ROM

optional arguments:
  -s, --serial           Display serial console
  -z, --scaling SCALING  Scaling factor
  -i, --cartridge-info   Dump cartridge info and quit
  -h, --help             Display this help message and quit

Usage

To use Args as a static library with CMake, copy it or add it as a submodule, then add to your CMakeLists.txt:

add_executable(my-awesome-project STATIC)

...

add_subdirectory(args)

target_link_libraries(my-awesome-project PRIVATE args)