enhanced-discord.py/discord/__main__.py

# -*- coding: utf-8 -*-

"""
The MIT License (MIT)

Copyright (c) 2015-2017 Rapptz

Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.
"""

import discord
import argparse
import sys
from pathlib import Path
import os
import re

def core(parser, args):
    pass

bot_template = """#!/usr/bin/env python3
# -*- coding: utf-8 -*-

from discord.ext import commands
import discord
import config

class Bot(commands.{base}):
    def __init__(self, **kwargs):
        super().__init__(command_prefix=commands.when_mentioned_or('{prefix}'), **kwargs)
        for cog in config.cogs:
            try:
                self.load_extension(cog)
            except Exception as e:
                print('Could not load extension {{0}} due to {{1.__class__.__name__}}: {{1}}'.format(cog, e))

    async def on_ready(self):
        print('Logged on as {{0}} (ID: {{0.id}})'.format(self.user))


bot = Bot()

# write general commands here

bot.run(config.token)
"""

gitignore_template = """# Byte-compiled / optimized / DLL files
__pycache__/
*.py[cod]
*$py.class

# C extensions
*.so

# Distribution / packaging
.Python
env/
build/
develop-eggs/
dist/
downloads/
eggs/
.eggs/
lib/
lib64/
parts/
sdist/
var/
*.egg-info/
.installed.cfg
*.egg

# Our configuration files
config.py
"""

cog_template = '''# -*- coding: utf-8 -*-

from discord.ext import commands
import discord

class {name}:
    """The description for {name} goes here."""

    def __init__(self, bot):
        self.bot = bot
{extra}
def setup(bot):
    bot.add_cog({name}(bot))
'''

cog_extras = '''
    def __unload(self):
        # clean up logic goes here
        pass

    async def __local_check(self, ctx):
        # checks that apply to every command in here
        return True

    async def __global_check(self, ctx):
        # checks that apply to every command to the bot
        return True

    async def __global_check_once(self, ctx):
        # check that apply to every command but is guaranteed to be called only once
        return True

    async def __error(self, ctx, error):
        # error handling to every command in here
        pass

    async def __before_invoke(self, ctx):
        # called before a command is called here
        pass

    async def __after_invoke(self, ctx):
        # called after a command is called here
        pass

'''


# certain file names and directory names are forbidden
# see: https://msdn.microsoft.com/en-us/library/windows/desktop/aa365247%28v=vs.85%29.aspx
# although some of this doesn't apply to Linux, we might as well be consistent
_base_table = {
    '<': '-',
    '>': '-',
    ':': '-',
    '"': '-',
    # '/': '-', these are fine
    # '\\': '-',
    '|': '-',
    '?': '-',
    '*': '-',
}

#
_base_table.update((chr(i), None) for i in range(32))

translation_table = str.maketrans(_base_table)

def to_path(parser, name, *, replace_spaces=False):
    if isinstance(name, Path):
        return name

    if sys.platform == 'win32':
        forbidden = ('CON', 'PRN', 'AUX', 'NUL', 'COM1', 'COM2', 'COM3', 'COM4', 'COM5', 'COM6', 'COM7', \
                     'COM8', 'COM9', 'LPT1', 'LPT2', 'LPT3', 'LPT4', 'LPT5', 'LPT6', 'LPT7', 'LPT8', 'LPT9')
        if len(name) <= 4 and name.upper() in forbidden:
            parser.error('invalid directory name given, use a different one')

    name = name.translate(translation_table)
    if replace_spaces:
        name = name.replace(' ', '-')
    return Path(name)

def newbot(parser, args):
    if sys.version_info < (3, 5):
        parser.error('python version is older than 3.5, consider upgrading.')

    new_directory = to_path(parser, args.directory) / to_path(parser, args.name)

    # as a note exist_ok for Path is a 3.5+ only feature
    # since we already checked above that we're >3.5
    try:
        new_directory.mkdir(exist_ok=True, parents=True)
    except OSError as e:
        parser.error('could not create our bot directory ({})'.format(e))

    cogs = new_directory / 'cogs'

    try:
        cogs.mkdir(exist_ok=True)
        init = cogs / '__init__.py'
        init.touch()
    except OSError as e:
        print('warning: could not create cogs directory ({})'.format(e))

    try:
        with open(str(new_directory / 'config.py'), 'w', encoding='utf-8') as fp:
            fp.write('token = "place your token here"\ncogs = []\n')
    except OSError as e:
       parser.error('could not create config file ({})'.format(e))

    try:
        with open(str(new_directory / 'bot.py'), 'w', encoding='utf-8') as fp:
            base = 'Bot' if not args.sharded else 'AutoShardedBot'
            fp.write(bot_template.format(base=base, prefix=args.prefix))
    except OSError as e:
        parser.error('could not create bot file ({})'.format(e))

    if not args.no_git:
        try:
            with open(str(new_directory / '.gitignore'), 'w', encoding='utf-8') as fp:
                fp.write(gitignore_template)
        except OSError as e:
            print('warning: could not create .gitignore file ({})'.format(e))

    print('successfully made bot at', new_directory)

def newcog(parser, args):
    if sys.version_info < (3, 5):
        parser.error('python version is older than 3.5, consider upgrading.')

    cog_dir = to_path(parser, args.directory)
    try:
        cog_dir.mkdir(exist_ok=True)
    except OSError as e:
        print('warning: could not create cogs directory ({})'.format(e))

    directory = cog_dir / to_path(parser, args.name)
    directory = directory.with_suffix('.py')
    try:
        with open(str(directory), 'w', encoding='utf-8') as fp:
            extra = cog_extras if args.full else ''
            if args.class_name:
                name = args.class_name
            else:
                name = str(directory.stem)
                if '-' in name:
                    name = name.replace('-', ' ').title().replace(' ', '')
                else:
                    name = name.title()
            fp.write(cog_template.format(name=name, extra=extra))
    except OSError as e:
        parser.error('could not create cog file ({})'.format(e))
    else:
        print('successfully made cog at', directory)

def add_newbot_args(subparser):
    parser = subparser.add_parser('newbot', help='creates a command bot project quickly')
    parser.set_defaults(func=newbot)

    parser.add_argument('name', help='the bot project name')
    parser.add_argument('directory', help='the directory to place it in (default: .)', nargs='?', default=Path.cwd())
    parser.add_argument('--prefix', help='the bot prefix (default: $)', default='$', metavar='<prefix>')
    parser.add_argument('--sharded', help='whether to use AutoShardedBot', action='store_true')
    parser.add_argument('--no-git', help='do not create a .gitignore file', action='store_true', dest='no_git')

def add_newcog_args(subparser):
    parser = subparser.add_parser('newcog', help='creates a new cog template quickly')
    parser.set_defaults(func=newcog)

    parser.add_argument('name', help='the cog name')
    parser.add_argument('directory', help='the directory to place it in (default: cogs)', nargs='?', default=Path('cogs'))
    parser.add_argument('--class-name', help='the class name of the cog (default: <name>)', dest='class_name')
    parser.add_argument('--full', help='add all special methods as well', action='store_true')

def parse_args():
    parser = argparse.ArgumentParser(prog='discord', description='Tools for helping with discord.py')

    version = 'discord.py v{0.__version__} for Python {1[0]}.{1[1]}.{1[2]}'.format(discord, sys.version_info)
    parser.add_argument('-v', '--version', action='version', version=version, help='shows the library version')
    parser.set_defaults(func=core)

    subparser = parser.add_subparsers(dest='subcommand', title='subcommands')
    add_newbot_args(subparser)
    add_newcog_args(subparser)
    return parser, parser.parse_args()

def main():
    parser, args = parse_args()
    args.func(parser, args)

main()