def _find_actions(self, subparsers, actions_module):
for attr in (a for a in dir(actions_module) if a.startswith('do_')):
# Replace underscores with hyphens in the commands
# displayed to the user
command = attr[3:].replace('_', '-')
callback = getattr(actions_module, attr)
desc = callback.__doc__ or ''
help = desc.strip().split('\n')[0]
arguments = getattr(callback, 'arguments', [])
subparser = subparsers.add_parser(command,
help=help,
description=desc,
add_help=False,
formatter_class=HelpFormatter
)
subparser.add_argument('-h', '--help',
action='help',
help=argparse.SUPPRESS,
)
self.subcommands[command] = subparser
for (args, kwargs) in arguments:
subparser.add_argument(*args, **kwargs)
subparser.set_defaults(func=callback)
python类HelpFormatter()的实例源码
def _find_actions(self, subparsers, actions_module):
for attr in (a for a in dir(actions_module) if a.startswith('do_')):
# I prefer to be hypen-separated instead of underscores.
command = attr[3:].replace('_', '-')
callback = getattr(actions_module, attr)
desc = callback.__doc__ or ''
help = desc.strip().split('\n')[0]
arguments = getattr(callback, 'arguments', [])
subparser = subparsers.add_parser(command, help=help,
description=desc,
add_help=False,
formatter_class=HelpFormatter)
subparser.add_argument('-h', '--help', action='help',
help=argparse.SUPPRESS)
self.subcommands[command] = subparser
for (args, kwargs) in arguments:
subparser.add_argument(*args, **kwargs)
subparser.set_defaults(func=callback)
def _find_actions(self, subparsers, actions_module):
for attr in (a for a in dir(actions_module) if a.startswith('do_')):
# I prefer to be hyphen-separated instead of underscores.
command = attr[3:].replace('_', '-')
callback = getattr(actions_module, attr)
desc = callback.__doc__ or ''
help = desc.strip().split('\n')[0]
arguments = getattr(callback, 'arguments', [])
subparser = subparsers.add_parser(command,
help=help,
description=desc,
add_help=False,
formatter_class=HelpFormatter)
subparser.add_argument('-h', '--help',
action='help',
help=argparse.SUPPRESS)
self.subcommands[command] = subparser
for (args, kwargs) in arguments:
subparser.add_argument(*args, **kwargs)
subparser.set_defaults(func=callback)
def _find_subparsers(self, subparsers, actions_module):
"""Find subparsers by looking at *_shell files."""
help_formatter = argparse.HelpFormatter
for attr in (a for a in dir(actions_module) if a.startswith('do_')):
command = attr[3:].replace('_', '-')
callback = getattr(actions_module, attr)
desc = callback.__doc__ or ''
action_help = desc.strip()
arguments = getattr(callback, 'arguments', [])
subparser = (subparsers.add_parser(command,
help=action_help,
description=desc,
add_help=False,
formatter_class=help_formatter)
)
subparser.add_argument('-h', '--help',
action='help',
help=argparse.SUPPRESS)
self.subcommands[command] = subparser
for (args, kwargs) in arguments:
subparser.add_argument(*args, **kwargs)
subparser.set_defaults(func=callback)
def _find_actions(self, subparsers, actions_module):
for attr in (a for a in dir(actions_module) if a.startswith('do_')):
command = attr[3:].replace('_', '-')
callback = getattr(actions_module, attr)
desc = callback.__doc__ or ''
help = desc.strip().split('\n')[0]
arguments = getattr(callback, 'arguments', [])
subparser = subparsers.add_parser(command,
help=help,
description=desc,
add_help=False,
formatter_class=HelpFormatter
)
subparser.add_argument('-h', '--help',
action='help',
help=argparse.SUPPRESS,
)
self.subcommands[command] = subparser
for (args, kwargs) in arguments:
subparser.add_argument(*args, **kwargs)
subparser.set_defaults(func=callback)
def _find_actions(self, subparsers, actions_module):
for attr in (a for a in dir(actions_module) if a.startswith('do_')):
command = attr[3:].replace('_', '-')
callback = getattr(actions_module, attr)
desc = callback.__doc__ or ''
help = desc.strip().split('\n')[0]
arguments = getattr(callback, 'arguments', [])
subparser = subparsers.add_parser(command,
help=help,
description=desc,
add_help=False,
formatter_class=HelpFormatter)
subparser.add_argument('-h', '--help',
action='help',
help=argparse.SUPPRESS)
for (args, kwargs) in arguments:
subparser.add_argument(*args, **kwargs)
subparser.set_defaults(func=callback)
self.subcommands[command] = subparser
def _format_action_invocation(self, action):
orgstr = argparse.HelpFormatter._format_action_invocation(self, action)
if orgstr and orgstr[0] != '-': # only optional arguments
return orgstr
res = getattr(action, '_formatted_action_invocation', None)
if res:
return res
options = orgstr.split(', ')
if len(options) == 2 and (len(options[0]) == 2 or len(options[1]) == 2):
# a shortcut for '-h, --help' or '--abc', '-a'
action._formatted_action_invocation = orgstr
return orgstr
return_list = []
option_map = getattr(action, 'map_long_option', {})
if option_map is None:
option_map = {}
short_long = {}
for option in options:
if len(option) == 2 or option[2] == ' ':
continue
if not option.startswith('--'):
raise ArgumentError('long optional argument without "--": [%s]'
% (option), self)
xxoption = option[2:]
if xxoption.split()[0] not in option_map:
shortened = xxoption.replace('-', '')
if shortened not in short_long or \
len(short_long[shortened]) < len(xxoption):
short_long[shortened] = xxoption
# now short_long has been filled out to the longest with dashes
# **and** we keep the right option ordering from add_argument
for option in options: #
if len(option) == 2 or option[2] == ' ':
return_list.append(option)
if option[2:] == short_long.get(option.replace('-', '')):
return_list.append(option.replace(' ', '='))
action._formatted_action_invocation = ', '.join(return_list)
return action._formatted_action_invocation
def _split_lines(self, text, width):
if fun_check(text):
return [l for l in text.splitlines(True) if not fun_comment(l)]
return [
l for l in argparse.HelpFormatter._split_lines(self, text, width)
if not fun_comment(l)]
def _add_bash_completion_subparser(self, subparsers):
subparser = subparsers.add_parser('bash_completion',
add_help=False,
formatter_class=HelpFormatter)
self.subcommands['bash_completion'] = subparser
subparser.set_defaults(func=self.do_bash_completion)
def start_section(self, heading):
# Title-case the headings
heading = '%s%s' % (heading[0].upper(), heading[1:])
super(HelpFormatter, self).start_section(heading)
def __init__(self, option_cls):
self.__option_cls = option_cls
self._parser = argparse.ArgumentParser(formatter_class=
lambda prog: argparse.HelpFormatter(prog, width=shutil.get_terminal_size()[0]))
def optionxform(self, strOut):
return strOut
# Define a HelpFormatter class that works with Unicode corpus names both in
# Python 2.7 and Python 3.x:
def _split_lines(self, text, width):
if text.startswith('R|'):
return text[2:].splitlines()
# this is the RawTextHelpFormatter._split_lines
return argparse.HelpFormatter._split_lines(self, text, width)
def help_formatter(prog):
""" So formatter_class's max_help_position can be changed. """
return argparse.HelpFormatter(prog, max_help_position=40)
def test_parser(self):
parser = argparse.ArgumentParser(prog='PROG')
string = (
"ArgumentParser(prog='PROG', usage=None, description=None, "
"version=None, formatter_class=%r, conflict_handler='error', "
"add_help=True)" % argparse.HelpFormatter)
self.assertStringEqual(parser, string)
# ===============
# Namespace tests
# ===============
def __init__(self):
self.meta = None
self.proxy = None
self.server = grpc.server(futures.ThreadPoolExecutor(max_workers=10))
self._port = 0
self._last_ping = time.time()
self._shutting_down = False
self._monitor = None
self._mode = PluginMode.normal
self._config = {}
self._flags = _Flags()
self.standalone_server = None
# init argparse module and add arguments
self._parser = argparse.ArgumentParser(description="%(prog)s - a Snap framework plugin.",
usage="%(prog)s [options]",
formatter_class=lambda prog:
argparse.HelpFormatter(prog, max_help_position=30))
self._parser.add_argument("framework_config", nargs="?", default=None, help=argparse.SUPPRESS)
flags = [
("config", FlagType.value, "JSON Snap global config"),
("port", FlagType.value, "GRPC server port"),
("stand-alone", FlagType.toggle, "enable stand alone mode"),
("stand-alone-port", FlagType.value, "http port for stand alone mode", 8182),
Flag("log-level", FlagType.value, "logging level 0:panic - 5:debug", 3, json_name="LogLevel"),
Flag("tls", FlagType.toggle, "enable tls", json_name="TLSEnabled"),
Flag("root-cert-paths", FlagType.value, "paths to root certificate; delimited by ':'", json_name="RootCertPaths"),
Flag("key-path", FlagType.value, "path to server private key", json_name="KeyPath"),
Flag("cert-path", FlagType.value, "path to server certificate", json_name="CertPath"),
]
self._flags.add_multiple(flags)
def _split_lines(self, text, width):
# this is the RawTextHelpFormatter._split_lines
if text.startswith('S|'):
return text[2:].splitlines()
return ap.HelpFormatter._split_lines(self, text, width)
def test_parser(self):
parser = argparse.ArgumentParser(prog='PROG')
string = (
"ArgumentParser(prog='PROG', usage=None, description=None, "
"version=None, formatter_class=%r, conflict_handler='error', "
"add_help=True)" % argparse.HelpFormatter)
self.assertStringEqual(parser, string)
# ===============
# Namespace tests
# ===============
def test_parser(self):
parser = argparse.ArgumentParser(prog='PROG')
string = (
"ArgumentParser(prog='PROG', usage=None, description=None, "
"version=None, formatter_class=%r, conflict_handler='error', "
"add_help=True)" % argparse.HelpFormatter)
self.assertStringEqual(parser, string)
# ===============
# Namespace tests
# ===============
def _format_action_invocation(self, action):
orgstr = argparse.HelpFormatter._format_action_invocation(self, action)
if orgstr and orgstr[0] != '-': # only optional arguments
return orgstr
res = getattr(action, '_formatted_action_invocation', None)
if res:
return res
options = orgstr.split(', ')
if len(options) == 2 and (len(options[0]) == 2 or len(options[1]) == 2):
# a shortcut for '-h, --help' or '--abc', '-a'
action._formatted_action_invocation = orgstr
return orgstr
return_list = []
option_map = getattr(action, 'map_long_option', {})
if option_map is None:
option_map = {}
short_long = {}
for option in options:
if len(option) == 2 or option[2] == ' ':
continue
if not option.startswith('--'):
raise ArgumentError('long optional argument without "--": [%s]'
% (option), self)
xxoption = option[2:]
if xxoption.split()[0] not in option_map:
shortened = xxoption.replace('-', '')
if shortened not in short_long or \
len(short_long[shortened]) < len(xxoption):
short_long[shortened] = xxoption
# now short_long has been filled out to the longest with dashes
# **and** we keep the right option ordering from add_argument
for option in options: #
if len(option) == 2 or option[2] == ' ':
return_list.append(option)
if option[2:] == short_long.get(option.replace('-', '')):
return_list.append(option.replace(' ', '='))
action._formatted_action_invocation = ', '.join(return_list)
return action._formatted_action_invocation
def start_section(self, heading):
# Title-case the headings
heading = '%s%s' % (heading[0].upper(), heading[1:])
super(HelpFormatter, self).start_section(heading)
def get_parser():
""" creates the parser for the ansible-role command line utility """
parser = argparse.ArgumentParser(
prog=os.path.split(sys.argv[0])[-1],
formatter_class=HelpFormatter,)
parser.add_argument('rolename', type=str, nargs=1,)
parser.add_argument('host', type=str, nargs='?', default='localhost',)
parser.add_argument('--module-path', '-M',)
return parser
def _split_lines(self, text, width):
if text.startswith('R|'):
return text[2:].splitlines()
# this is the RawTextHelpFormatter._split_lines
return argparse.HelpFormatter._split_lines(self, text, width)
def test_parser(self):
parser = argparse.ArgumentParser(prog='PROG')
string = (
"ArgumentParser(prog='PROG', usage=None, description=None, "
"formatter_class=%r, conflict_handler='error', "
"add_help=True)" % argparse.HelpFormatter)
self.assertStringEqual(parser, string)
# ===============
# Namespace tests
# ===============
def _format_action_invocation(self, action):
orgstr = argparse.HelpFormatter._format_action_invocation(self, action)
if orgstr and orgstr[0] != '-': # only optional arguments
return orgstr
res = getattr(action, '_formatted_action_invocation', None)
if res:
return res
options = orgstr.split(', ')
if len(options) == 2 and (len(options[0]) == 2 or len(options[1]) == 2):
# a shortcut for '-h, --help' or '--abc', '-a'
action._formatted_action_invocation = orgstr
return orgstr
return_list = []
option_map = getattr(action, 'map_long_option', {})
if option_map is None:
option_map = {}
short_long = {}
for option in options:
if len(option) == 2 or option[2] == ' ':
continue
if not option.startswith('--'):
raise ArgumentError('long optional argument without "--": [%s]'
% (option), self)
xxoption = option[2:]
if xxoption.split()[0] not in option_map:
shortened = xxoption.replace('-', '')
if shortened not in short_long or \
len(short_long[shortened]) < len(xxoption):
short_long[shortened] = xxoption
# now short_long has been filled out to the longest with dashes
# **and** we keep the right option ordering from add_argument
for option in options: #
if len(option) == 2 or option[2] == ' ':
return_list.append(option)
if option[2:] == short_long.get(option.replace('-', '')):
return_list.append(option.replace(' ', '=', 1))
action._formatted_action_invocation = ', '.join(return_list)
return action._formatted_action_invocation
def _format_action_invocation(self, action):
orgstr = argparse.HelpFormatter._format_action_invocation(self, action)
if orgstr and orgstr[0] != '-': # only optional arguments
return orgstr
res = getattr(action, '_formatted_action_invocation', None)
if res:
return res
options = orgstr.split(', ')
if len(options) == 2 and (len(options[0]) == 2 or len(options[1]) == 2):
# a shortcut for '-h, --help' or '--abc', '-a'
action._formatted_action_invocation = orgstr
return orgstr
return_list = []
option_map = getattr(action, 'map_long_option', {})
if option_map is None:
option_map = {}
short_long = {}
for option in options:
if len(option) == 2 or option[2] == ' ':
continue
if not option.startswith('--'):
raise ArgumentError('long optional argument without "--": [%s]'
% (option), self)
xxoption = option[2:]
if xxoption.split()[0] not in option_map:
shortened = xxoption.replace('-', '')
if shortened not in short_long or \
len(short_long[shortened]) < len(xxoption):
short_long[shortened] = xxoption
# now short_long has been filled out to the longest with dashes
# **and** we keep the right option ordering from add_argument
for option in options: #
if len(option) == 2 or option[2] == ' ':
return_list.append(option)
if option[2:] == short_long.get(option.replace('-', '')):
return_list.append(option.replace(' ', '=', 1))
action._formatted_action_invocation = ', '.join(return_list)
return action._formatted_action_invocation
def _split_lines(self, text, width):
if text.startswith('ML|'):
return text[3:].splitlines()
# this is the RawTextHelpFormatter._split_lines
return argparse.HelpFormatter._split_lines(self, text, width)
#############
# Functions #
#############
def _add_bash_completion_subparser(self, subparsers):
subparser = subparsers.add_parser(
'bash_completion',
add_help=False,
formatter_class=HelpFormatter
)
self.subcommands['bash_completion'] = subparser
subparser.set_defaults(func=self.do_bash_completion)
def start_section(self, heading):
# Title-case the headings
heading = '%s%s' % (heading[0].upper(), heading[1:])
super(HelpFormatter, self).start_section(heading)
def _add_bash_completion_subparser(self, subparsers):
subparser = subparsers.add_parser(
'bash_completion',
add_help=False,
formatter_class=HelpFormatter
)
self.subcommands['bash_completion'] = subparser
subparser.set_defaults(func=self.do_bash_completion)