def jack_compiler():
path = Util.get_command_line_argument(1)
if os.path.isdir(path):
files = FileSet(path, 'jack')
while files.has_more_files():
filename = files.next_file()
JackCompiler.compile_jack(filename)
elif os.path.isfile(path):
JackCompiler.compile_jack(path)
else:
print('{} is not a file or dir'.format(path))
