{

auto* sub = app.add_subcommand("rev-list", "Lists commit objects in reverse chronological order");

sub->add_option("<commit>", m_commit, "");

sub->add_option("-n,--max-count", m_max_count_flag, "Limit the output to <number> commits.");

sub->callback(

[this]()

{

this->run();

}

);

{

if (m_commit.empty())

{

throw std::runtime_error("usage: git rev-list [<options>] <commit>... [--] [<path>...]"); // TODO:

// add help

// info

}

auto directory = get_current_git_path();

auto repo = repository_wrapper::open(directory);

git_oid start_commit_oid;

int not_sha1 = git_oid_fromstrp(&start_commit_oid, m_commit.c_str());

if (not_sha1)

{

commit_wrapper start_commit = repo.find_commit(m_commit);

start_commit_oid = start_commit.oid();

}

revwalk_wrapper walker = repo.new_walker();

walker.push(start_commit_oid);

std::size_t i = 0;

git_oid commit_oid;

char buf[GIT_OID_SHA1_HEXSIZE + 1];

while (!walker.next(commit_oid) && i < m_max_count_flag)

{

git_oid_fmt(buf, &commit_oid);

buf[GIT_OID_SHA1_HEXSIZE] = '\0';

std::cout << buf << std::endl;

++i;

}