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#!/usr/bin/python
# coding: utf-8 -*-
# pylint: disable=inconsistent-return-statements
"""
Extension for the python ``click`` module
to provide a group or command with aliases.
"""
from typing import Any
import click
class AliasedGroup(click.Group):
"""
Implements a subclass of Group that accepts a prefix for a command.
If there were a command called push, it would accept pus as an alias (so long as it was unique)
"""
def get_command(self, ctx: click.Context, cmd_name: str) -> Any:
"""Documentation to build"""
rv = click.Group.get_command(self, ctx, cmd_name)
if rv is not None:
return rv
matches = [x for x in self.list_commands(ctx)
if x.startswith(cmd_name)]
if not matches:
return None
if len(matches) == 1:
return click.Group.get_command(self, ctx, matches[0])
ctx.fail(f"Too many matches: {', '.join(sorted(matches))}")
def resolve_command(self, ctx: click.Context, args: Any) -> Any:
"""Documentation to build"""
# always return the full command name
_, cmd, args = super().resolve_command(ctx, args)
return cmd.name, cmd, args
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