def __call__(self, parser, namespace, values, option_string=None):
parser_name = values[0]
# this bit is taken directly from argparse:
try:
parser = self._name_parser_map[parser_name]
except KeyError:
tup = parser_name, ', '.join(self._name_parser_map)
msg = 'unknown parser %r (choices: %s)' % tup
raise ArgumentError(self, msg)
self._setup_subparser(parser_name, parser)
caller = super(LazySubParsersAction, self).__call__
return caller(parser, namespace, values, option_string)
def take_action(action, argument_strings, option_string=None):
seen_actions.add(action)
argument_values = self._get_values(action, argument_strings)
# error if this argument is not allowed with other previously
# seen arguments, assuming that actions that use the default
# value don't really count as "present"
if argument_values is not action.default:
seen_non_default_actions.add(action)
for conflict_action in action_conflicts.get(action, []):
if conflict_action in seen_non_default_actions:
msg = _('not allowed with argument %s')
action_name = _get_action_name(conflict_action)
raise ArgumentError(action, msg % action_name)
# take the action if we didn't receive a SUPPRESS value
# (e.g. from a default)
if argument_values is not SUPPRESS:
action(self, namespace, argument_values, option_string)
def consume_optional(start_index):
# get the optional identified at this index
option_tuple = option_string_indices[start_index]
action, option_string, explicit_arg = option_tuple
# identify additional optionals in the same arg string
# (e.g. -xyz is the same as -x -y -z if no args are required)
match_argument = self._match_argument
action_tuples = []
while True:
# if we found no optional action, skip it
if action is None:
extras.append(arg_strings[start_index])
return start_index + 1
# if there is an explicit argument, try to match the
# optional's string arguments to only this
if explicit_arg is not None:
arg_count = match_argument(action, 'A')
# if the action is a single-dash option and takes no
# arguments, try to parse more single-dash options out
# of the tail of the option string
chars = self.prefix_chars
if arg_count == 0 and option_string[1] not in chars:
action_tuples.append((action, [], option_string))
char = option_string[0]
option_string = char + explicit_arg[0]
new_explicit_arg = explicit_arg[1:] or None
optionals_map = self._option_string_actions
if option_string in optionals_map:
action = optionals_map[option_string]
explicit_arg = new_explicit_arg
else:
msg = _('ignored explicit argument %r')
raise ArgumentError(action, msg % explicit_arg)
# if the action expect exactly one argument, we've
# successfully matched the option; exit the loop
elif arg_count == 1:
stop = start_index + 1
args = [explicit_arg]
action_tuples.append((action, args, option_string))
break
# error if a double-dash option did not use the
# explicit argument
else:
msg = _('ignored explicit argument %r')
raise ArgumentError(action, msg % explicit_arg)
# if there is no explicit argument, try to match the
# optional's string arguments with the following strings
# if successful, exit the loop
else:
start = start_index + 1
selected_patterns = arg_strings_pattern[start:]
self.active_actions = [action] # Added by argcomplete
action.num_consumed_args = 0 # Added by argcomplete
arg_count = match_argument(action, selected_patterns)
stop = start + arg_count
args = arg_strings[start:stop]
# Begin added by argcomplete
# If the pattern is not open (e.g. no + at the end), remove the action from active actions (since
# it wouldn't be able to consume any more args)
if not action_is_open(action):
self.active_actions.remove(action)
elif action.nargs == OPTIONAL and len(args) == 1:
self.active_actions.remove(action)
action.num_consumed_args = len(args)
# End added by argcomplete
action_tuples.append((action, args, option_string))
break
# add the Optional to the list and return the index at which
# the Optional's string args stopped
assert action_tuples
for action, args, option_string in action_tuples:
take_action(action, args, option_string)
return stop