def get_project(name: str, directory: str = '') -> None:
"""Clone a project from a GitHub name or git url.
Put it in dir if this argument is given.
A GitHub name without / will be considered as
a leanprover-community project.
If the name ends with ':foo' then foo will be interpreted
as a branch name, and that branch will be checked out."""
# check whether we can ssh into GitHub
try:
client = paramiko.client.SSHClient()
client.set_missing_host_key_policy(paramiko.client.AutoAddPolicy())
client.connect('github.com', username='******')
client.close()
ssh = True
except (AuthenticationException, SSHException):
ssh = False
name, url, branch = parse_project_name(name, ssh)
if branch:
name = name + '_' + branch
directory = directory or name
if directory and Path(directory).exists():
log.error(directory + ' already exists')
sys.exit(-1)
try:
LeanProject.from_git_url(url, directory, branch, cache_url,
force_download)
except GitCommandError as err:
handle_exception(err, 'Git command failed')
def handle_exception(exc, msg):
if debug:
raise exc
else:
log.error(msg)
sys.exit(-1)