165 lines
5.3 KiB
Python
165 lines
5.3 KiB
Python
from discord.ext import commands
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import time
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import datetime
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import math
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import asyncio
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import traceback
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import discord
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import inspect
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import textwrap
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from contextlib import redirect_stdout
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import io
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ownerid = "177393521051959306"
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class REPL:
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def __init__(self, bot):
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self.bot = bot
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self._last_result = None
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self.sessions = set()
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def cleanup_code(self, content):
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"""Automatically removes code blocks from the code."""
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# remove ```py\n```
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if content.startswith('```') and content.endswith('```'):
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return '\n'.join(content.split('\n')[1:-1])
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# remove `foo`
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return content.strip('` \n')
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def get_syntax_error(self, e):
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if e.text is None:
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return '```py\n{0.__class__.__name__}: {0}\n```'.format(e)
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return '```py\n{0.text}{1:>{0.offset}}\n{2}: {0}```'.format(e, '^', type(e).__name__)
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@commands.command(pass_context=True, hidden=True, name='exec')
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async def _eval(self, ctx, *, body: str):
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if ctx.message.author.id != ownerid:
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return
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env = {
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'bot': self.bot,
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'ctx': ctx,
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'channel': ctx.message.channel,
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'author': ctx.message.author,
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'server': ctx.message.server,
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'message': ctx.message,
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'_': self._last_result
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}
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env.update(globals())
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body = self.cleanup_code(body)
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stdout = io.StringIO()
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to_compile = 'async def func():\n%s' % textwrap.indent(body, ' ')
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try:
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exec(to_compile, env)
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except SyntaxError as e:
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return await self.bot.say(self.get_syntax_error(e))
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func = env['func']
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try:
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with redirect_stdout(stdout):
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ret = await func()
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except Exception as e:
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value = stdout.getvalue()
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await self.bot.say('```py\n{}{}\n```'.format(value, traceback.format_exc()))
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else:
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value = stdout.getvalue()
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try:
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await self.bot.add_reaction(ctx.message, '\u2705')
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except:
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pass
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if ret is None:
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if value:
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await self.bot.say('```py\n%s\n```' % value)
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else:
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self._last_result = ret
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await self.bot.say('```py\n%s%s\n```' % (value, ret))
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@commands.command(pass_context=True, hidden=True)
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async def repl(self, ctx):
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if ctx.message.author.id != ownerid:
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return
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msg = ctx.message
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variables = {
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'ctx': ctx,
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'bot': self.bot,
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'message': msg,
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'server': msg.server,
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'channel': msg.channel,
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'author': msg.author,
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'_': None,
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}
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if msg.channel.id in self.sessions:
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await self.bot.say('Already running a REPL session in this channel. Exit it with `quit`.')
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return
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self.sessions.add(msg.channel.id)
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await self.bot.say('Enter code to execute or evaluate. `exit()` or `quit` to exit.')
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while True:
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response = await self.bot.wait_for_message(author=msg.author, channel=msg.channel,
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check=lambda m: m.content.startswith('`'))
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cleaned = self.cleanup_code(response.content)
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if cleaned in ('quit', 'exit', 'exit()'):
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await self.bot.say('Exiting.')
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self.sessions.remove(msg.channel.id)
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return
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executor = exec
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if cleaned.count('\n') == 0:
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# single statement, potentially 'eval'
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try:
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code = compile(cleaned, '<repl session>', 'eval')
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except SyntaxError:
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pass
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else:
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executor = eval
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if executor is exec:
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try:
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code = compile(cleaned, '<repl session>', 'exec')
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except SyntaxError as e:
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await self.bot.say(self.get_syntax_error(e))
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continue
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variables['message'] = response
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fmt = None
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stdout = io.StringIO()
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try:
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with redirect_stdout(stdout):
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result = executor(code, variables)
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if inspect.isawaitable(result):
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result = await result
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except Exception as e:
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value = stdout.getvalue()
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fmt = '```py\n{}{}\n```'.format(value, traceback.format_exc())
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else:
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value = stdout.getvalue()
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if result is not None:
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fmt = '```py\n{}{}\n```'.format(value, result)
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variables['_'] = result
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elif value:
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fmt = '```py\n{}\n```'.format(value)
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try:
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if fmt is not None:
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if len(fmt) > 2000:
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await self.bot.send_message(msg.channel, 'Content too big to be printed.')
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else:
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await self.bot.send_message(msg.channel, fmt)
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except discord.Forbidden:
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pass
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except discord.HTTPException as e:
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await self.bot.send_message(msg.channel, 'Unexpected error: `{}`'.format(e))
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def setup(bot):
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bot.add_cog(REPL(bot))
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