324d10c9d9
This allows you to strictly require a number of arguments. The default behaviour in this case is still `True`, since it would be a breaking change otherwise and is a sane default. However if someone would want to set this to `False`, they would receive an exception of type `TooManyArguments` if too many arguments are passed to a command. Hopefully this removes the uses of `ctx.message.content == 'stuff'` inside commands.
103 lines
3.6 KiB
Python
103 lines
3.6 KiB
Python
# -*- coding: utf-8 -*-
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"""
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The MIT License (MIT)
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Copyright (c) 2015-2016 Rapptz
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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DEALINGS IN THE SOFTWARE.
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"""
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from discord.errors import DiscordException
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__all__ = [ 'CommandError', 'MissingRequiredArgument', 'BadArgument',
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'NoPrivateMessage', 'CheckFailure', 'CommandNotFound',
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'DisabledCommand', 'CommandInvokeError', 'TooManyArguments' ]
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class CommandError(DiscordException):
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"""The base exception type for all command related errors.
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This inherits from :exc:`discord.DiscordException`.
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This exception and exceptions derived from it are handled
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in a special way as they are caught and passed into a special event
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from :class:`Bot`\, :func:`on_command_error`.
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"""
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def __init__(self, message=None, *args):
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if message is not None:
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# clean-up @everyone and @here mentions
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m = message.replace('@everyone', '@\u200beveryone').replace('@here', '@\u200bhere')
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super().__init__(m, *args)
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else:
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super().__init__(*args)
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class CommandNotFound(CommandError):
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"""Exception raised when a command is attempted to be invoked
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but no command under that name is found.
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This is not raised for invalid subcommands, rather just the
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initial main command that is attempted to be invoked.
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"""
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pass
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class MissingRequiredArgument(CommandError):
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"""Exception raised when parsing a command and a parameter
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that is required is not encountered.
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"""
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pass
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class BadArgument(CommandError):
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"""Exception raised when a parsing or conversion failure is encountered
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on an argument to pass into a command.
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"""
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pass
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class NoPrivateMessage(CommandError):
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"""Exception raised when an operation does not work in private message
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contexts.
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"""
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pass
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class CheckFailure(CommandError):
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"""Exception raised when the predicates in :attr:`Command.checks` have failed."""
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pass
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class DisabledCommand(CommandError):
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"""Exception raised when the command being invoked is disabled."""
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pass
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class CommandInvokeError(CommandError):
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"""Exception raised when the command being invoked raised an exception.
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Attributes
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-----------
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original
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The original exception that was raised. You can also get this via
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the ``__cause__`` attribute.
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"""
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def __init__(self, e):
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self.original = e
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super().__init__('Command raised an exception: {0.__class__.__name__}: {0}'.format(e))
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class TooManyArguments(CommandError):
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"""Exception raised when the command was passed too many arguments and its
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:attr:`Command.ignore_extra` attribute was not set to ``True``.
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"""
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pass
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