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tower-cli/tower_cli/cli/action.py
2017-07-06 15:25:03 -04:00

86 lines
3.2 KiB
Python

# Copyright 2017, Ansible by Red Hat
# Alan Rominger <arominge@redhat.com>
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License 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 click
from click.formatting import join_options
from tower_cli.conf import SETTINGS_PARMS
class ActionSubcommand(click.Command):
"""A Command subclass that adds support for the concept that invocation
without arguments assumes `--help`.
This code is adapted by taking code from click.MultiCommand and placing
it here, to get just the --help functionality and nothing else.
"""
def __init__(self, name=None, no_args_is_help=True, **kwargs):
self.no_args_is_help = no_args_is_help
super(ActionSubcommand, self).__init__(name=name, **kwargs)
def parse_args(self, ctx, args):
"""Parse arguments sent to this command.
The code for this method is taken from MultiCommand:
https://github.com/mitsuhiko/click/blob/master/click/core.py
It is Copyright (c) 2014 by Armin Ronacher.
See the license:
https://github.com/mitsuhiko/click/blob/master/LICENSE
"""
if not args and self.no_args_is_help and not ctx.resilient_parsing:
click.echo(ctx.get_help())
ctx.exit()
return super(ActionSubcommand, self).parse_args(ctx, args)
def format_options(self, ctx, formatter):
"""Monkey-patch click's format_options method to support option categorization.
"""
field_opts = []
global_opts = []
local_opts = []
other_opts = []
for param in self.params:
if param.name in SETTINGS_PARMS:
opts = global_opts
elif getattr(param, 'help', None) and param.help.startswith('[FIELD]'):
opts = field_opts
param.help = param.help[len('[FIELD]'):]
else:
opts = local_opts
rv = param.get_help_record(ctx)
if rv is None:
continue
else:
opts.append(rv)
if self.add_help_option:
help_options = self.get_help_option_names(ctx)
if help_options:
other_opts.append([join_options(help_options)[0], 'Show this message and exit.'])
if field_opts:
with formatter.section('Field Options'):
formatter.write_dl(field_opts)
if local_opts:
with formatter.section('Local Options'):
formatter.write_dl(local_opts)
if global_opts:
with formatter.section('Global Options'):
formatter.write_dl(global_opts)
if other_opts:
with formatter.section('Other Options'):
formatter.write_dl(other_opts)