/
completion.py
51 lines (39 loc) · 1.29 KB
/
completion.py
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import argparse
import sys
try:
import shtab
except ImportError:
pass
if sys.version_info < (3, 9):
from importlib_resources import files
else:
from importlib.resources import files
class _MissingCompletionAction(argparse.Action):
def __call__(self, parser, namespace, values, option_string):
print("Install keyring[completion] for completion support.")
parser.exit(0)
def add_completion_notice(parser):
"""Add completion argument to parser."""
parser.add_argument(
"--print-completion",
choices=["bash", "zsh", "tcsh"],
action=_MissingCompletionAction,
help="print shell completion script",
)
return parser
def get_action(parser, option):
(match,) = (action for action in parser._actions if option in action.option_strings)
return match
def install_completion(parser):
preamble = dict(
zsh=files(__package__).joinpath('backend_complete.zsh').read_text(),
)
shtab.add_argument_to(parser, preamble=preamble)
get_action(parser, '--keyring-path').completion = shtab.DIR
get_action(parser, '--keyring-backend').completion = dict(zsh='backend_complete')
return parser
def install(parser):
try:
install_completion(parser)
except NameError:
add_completion_notice(parser)