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Copy pathcompleter.py
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executable file
·179 lines (161 loc) · 6.79 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 awscli.clidriver
import sys
import logging
import copy
LOG = logging.getLogger(__name__)
class Completer(object):
def __init__(self):
self.driver = awscli.clidriver.create_clidriver()
self.main_hc = self.driver.create_help_command()
self.main_options = self._documented(self.main_hc.arg_table)
self.cmdline = None
self.point = None
self.command_hc = None
self.subcommand_hc = None
self.command_name = None
self.subcommand_name = None
self.current_word = None
self.previous_word = None
self.non_options = None
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):
retval = []
if self.current_word.startswith('-'):
cw = self.current_word.lstrip('-')
l = ['--' + n for n in self.main_options
if n.startswith(cw)]
retval = l
elif self.current_word == 'aws':
retval = self._documented(self.main_hc.command_table)
else:
# Otherwise, see if they have entered a partial command name
retval = self._documented(self.main_hc.command_table,
startswith=self.current_word)
return retval
def _complete_command(self):
retval = []
if self.current_word == self.command_name:
if self.command_hc:
retval = self._documented(self.command_hc.command_table)
elif self.current_word.startswith('-'):
retval = self._find_possible_options()
else:
# See if they have entered a partial command name
if self.command_hc:
retval = self._documented(self.command_hc.command_table,
startswith=self.current_word)
return retval
def _documented(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 _complete_subcommand(self):
retval = []
if self.current_word == self.subcommand_name:
retval = []
elif self.current_word.startswith('-'):
retval = self._find_possible_options()
return retval
def _find_possible_options(self):
all_options = copy.copy(self.main_options)
if self.subcommand_hc:
all_options = all_options + self._documented(self.subcommand_hc.arg_table)
for opt in self.options:
# Look thru 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 opt != self.current_word:
stripped_opt = opt.lstrip('-')
if stripped_opt in all_options:
all_options.remove(stripped_opt)
cw = self.current_word.lstrip('-')
possibles = ['--' + n for n in all_options if n.startswith(cw)]
if len(possibles) == 1 and possibles[0] == self.current_word:
return self._complete_option(possibles[0])
return possibles
def _process_command_line(self):
# Process the command line and try to find:
# - command_name
# - subcommand_name
# - words
# - current_word
# - previous_word
# - non_options
# - options
self.command_name = None
self.subcommand_name = None
self.words = self.cmdline[0:self.point].split()
self.current_word = self.words[-1]
if len(self.words) >= 2:
self.previous_word = self.words[-2]
else:
self.previous_word = None
self.non_options = [w for w in self.words if not w.startswith('-')]
self.options = [w for w in self.words if w.startswith('-')]
# Look for a command name in the non_options
for w in self.non_options:
if w in self.main_hc.command_table:
self.command_name = w
cmd_obj = self.main_hc.command_table[self.command_name]
self.command_hc = cmd_obj.create_help_command()
if self.command_hc and self.command_hc.command_table:
# Look for subcommand name
for w in self.non_options:
if w in self.command_hc.command_table:
self.subcommand_name = w
cmd_obj = self.command_hc.command_table[self.subcommand_name]
self.subcommand_hc = cmd_obj.create_help_command()
break
break
def complete(self, cmdline, point):
self.cmdline = cmdline
self.command_name = None
if point is None:
point = len(cmdline)
self.point = point
self._process_command_line()
if not self.command_name:
# If we didn't find any command names in the cmdline
# lets try to complete provider options
return self._complete_provider()
if self.command_name and not self.subcommand_name:
return self._complete_command()
return self._complete_subcommand()
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))