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Copy pathcompleter.py
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executable file
·158 lines (137 loc) · 5.85 KB
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# Copyright 2012-2013 Amazon.com, Inc. or its affiliates. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"). You
# may not use this file except in compliance with the License. A copy of
# the License is located at
#
# http://aws.amazon.com/apache2.0/
#
# or in the "license" file accompanying this file. This file is
# distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF
# ANY KIND, either express or implied. See the License for the specific
# language governing permissions and limitations under the License.
import copy
import logging
import sys
import awscli.clidriver
LOG = logging.getLogger(__name__)
class Completer:
def __init__(self, driver=None):
if driver is not None:
self.driver = driver
else:
self.driver = awscli.clidriver.create_clidriver()
self.main_help = self.driver.create_help_command()
self.main_options = self._get_documented_completions(
self.main_help.arg_table
)
def complete(self, cmdline, point=None):
if point is None:
point = len(cmdline)
args = cmdline[0:point].split()
current_arg = args[-1]
cmd_args = [w for w in args if not w.startswith('-')]
opts = [w for w in args if w.startswith('-')]
cmd_name, cmd = self._get_command(self.main_help, cmd_args)
subcmd_name, subcmd = self._get_command(cmd, cmd_args)
if cmd_name is None:
# If we didn't find any command names in the cmdline
# lets try to complete provider options
return self._complete_provider(current_arg, opts)
elif subcmd_name is None:
return self._complete_command(cmd_name, cmd, current_arg, opts)
return self._complete_subcommand(
subcmd_name, subcmd, current_arg, opts
)
def _complete_command(self, command_name, command_help, current_arg, opts):
if current_arg == command_name:
if command_help:
return self._get_documented_completions(
command_help.command_table
)
elif current_arg.startswith('-'):
return self._find_possible_options(current_arg, opts)
elif command_help is not None:
# See if they have entered a partial command name
return self._get_documented_completions(
command_help.command_table, current_arg
)
return []
def _complete_subcommand(
self, subcmd_name, subcmd_help, current_arg, opts
):
if current_arg != subcmd_name and current_arg.startswith('-'):
return self._find_possible_options(current_arg, opts, subcmd_help)
return []
def _complete_option(self, option_name):
if option_name == '--endpoint-url':
return []
if option_name == '--output':
cli_data = self.driver.session.get_data('cli')
return cli_data['options']['output']['choices']
if option_name == '--profile':
return self.driver.session.available_profiles
return []
def _complete_provider(self, current_arg, opts):
if current_arg.startswith('-'):
return self._find_possible_options(current_arg, opts)
elif current_arg == 'aws':
return self._get_documented_completions(
self.main_help.command_table
)
else:
# Otherwise, see if they have entered a partial command name
return self._get_documented_completions(
self.main_help.command_table, current_arg
)
def _get_command(self, command_help, command_args):
if command_help is not None and command_help.command_table is not None:
for command_name in command_args:
if command_name in command_help.command_table:
cmd_obj = command_help.command_table[command_name]
return command_name, cmd_obj.create_help_command()
return None, None
def _get_documented_completions(self, table, startswith=None):
names = []
for key, command in table.items():
if getattr(command, '_UNDOCUMENTED', False):
# Don't tab complete undocumented commands/params
continue
if startswith is not None and not key.startswith(startswith):
continue
if getattr(command, 'positional_arg', False):
continue
names.append(key)
return names
def _find_possible_options(self, current_arg, opts, subcmd_help=None):
all_options = copy.copy(self.main_options)
if subcmd_help is not None:
all_options += self._get_documented_completions(
subcmd_help.arg_table
)
for option in opts:
# Look through list of options on cmdline. If there are
# options that have already been specified and they are
# not the current word, remove them from list of possibles.
if option != current_arg:
stripped_opt = option.lstrip('-')
if stripped_opt in all_options:
all_options.remove(stripped_opt)
cw = current_arg.lstrip('-')
possibilities = ['--' + n for n in all_options if n.startswith(cw)]
if len(possibilities) == 1 and possibilities[0] == current_arg:
return self._complete_option(possibilities[0])
return possibilities
def complete(cmdline, point):
choices = Completer().complete(cmdline, point)
print(' \n'.join(choices))
if __name__ == '__main__':
if len(sys.argv) == 3:
cmdline = sys.argv[1]
point = int(sys.argv[2])
elif len(sys.argv) == 2:
cmdline = sys.argv[1]
else:
print('usage: %s <cmdline> <point>' % sys.argv[0])
sys.exit(1)
print(complete(cmdline, point))