argparse::ArgumentParser program("git");

// git add subparser

argparse::ArgumentParser add_command("add");

add_command.add_description("Add file contents to the index");

add_command.add_argument("files")

.help("Files to add content from. Fileglobs (e.g. *.c) can be given to "

"add all matching files.")

.remaining();

// git commit subparser

argparse::ArgumentParser commit_command("commit");

commit_command.add_description("Record changes to the repository");

commit_command.add_argument("-a", "--all")

.help("Tell the command to automatically stage files that have been "

"modified and deleted.")

.default_value(false)

.implicit_value(true);

commit_command.add_argument("-m", "--message")

.help("Use the given <msg> as the commit message.");

// git cat-file subparser

argparse::ArgumentParser catfile_command("cat-file");

catfile_command.add_description(

"Provide content or type and size information for repository objects");

catfile_command.add_argument("-t").help(

"Instead of the content, show the object type identified by <object>.");

catfile_command.add_argument("-p").help(

"Pretty-print the contents of <object> based on its type.");

// git submodule subparser

argparse::ArgumentParser submodule_command("submodule");

submodule_command.add_description("Initialize, update or inspect submodules");

argparse::ArgumentParser submodule_update_command("update");

submodule_update_command.add_description(

"Update the registered submodules to match what the superproject "

"expects");

submodule_update_command.add_argument("--init")

.default_value(false)

.implicit_value(true);

submodule_update_command.add_argument("--recursive")

.default_value(false)

.implicit_value(true);

submodule_command.add_subparser(submodule_update_command);

program.add_subparser(add_command);

program.add_subparser(commit_command);

program.add_subparser(catfile_command);

program.add_subparser(submodule_command);

try {

program.parse_args(argc, argv);

} catch (const std::exception &err) {

std::cerr << err.what() << std::endl;

std::cerr << program;

return 1;

}

// Use arguments