# Copyright 2017 Digital
#
# This file is part of DigiLib.
#
# DigiLib is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# DigiLib is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with DigiLib.  If not, see <http://www.gnu.org/licenses/>.

"""
Error messages
--------------
Some error messages often used in gpio. They should be used with ``.format()``.
"""



def args(command=None,amount=None,optional=None,syntax=None):
    retmsg = ""
    if command:
        retmsg += "'{}' ".format(command)
    retmsg += "takes "
    if amount:
        retmsg += "{} ".format(amount)
    if optional:
        retmsg += "{} ".format(optional)
    retmsg += "argument(s): "
    if syntax:
        retmsg += "{} ".format(syntax)
    return retmsg

ERROR_TAKES_ARGUMENTS = "{} takes {} {} argument(s): {}"


if __name__ == "__main__":
    print(args("cmd","one","optional","<state>"))
































#