231 lines
8.0 KiB
Python
231 lines
8.0 KiB
Python
from discord.ext import commands
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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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class REPL:
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"""Python in Discords"""
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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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"""
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Automatically removes code blocks from the code.
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"""
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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 '{0.__class__.__name__}: {0}'.format(e)
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return '{0.text}{1:>{0.offset}}\n{2}: {0}'.format(e, '^', type(e).__name__)
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@commands.command(name='exec')
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async def _eval(self, ctx, *, body: str = None):
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"""
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Execute python code in discord chat.
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Only the owner of this bot can use this command.
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Alias:
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- exec
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Usage:
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- exec < python code >
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Example:
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- exec print(546132)
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"""
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if ctx.author.id not in self.bot.ownerlist:
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return await ctx.send('Only my contributors can use me like this :blush:', delete_after=10)
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if body is None:
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return await ctx.send(
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'Please, use\n'
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f'`{self.bot.config["prefix"]}exec`\n\n'
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'\n`\\`\\`\\`py\n[python code]\n\\`\\`\\`\n'
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'to get the most out of the command')
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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.guild,
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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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try:
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await ctx.send(f'```py\n{self.get_syntax_error(e)}\n```')
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except Exception as e:
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error = [self.get_syntax_error(e)[i:i + 2000] for i in
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range(0, len(self.get_syntax_error(e)), 2000)]
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for i in error:
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await ctx.send(f'```py\n{i}\n```')
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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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try:
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await ctx.send(f'```py\n{value}{traceback.format_exc()}\n```')
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except Exception as e:
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error = [value[i:i + 2000] for i in range(0, len(value), 2000)]
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for i in error:
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await ctx.send(f'```py\n{i}\n```')
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tracebackerror = [traceback.format_exc()[i:i + 2000] for i in
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range(0, len(traceback.format_exc()), 2000)]
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for i in tracebackerror:
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await ctx.send(f'```py\n{i}\n```')
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else:
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value = stdout.getvalue()
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if ret is None:
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if value:
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try:
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await ctx.send(f'```py\n{value}\n```')
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except Exception as e:
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code = [value[i:i + 1980] for i in range(0, len(value), 1980)]
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for i in code:
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await ctx.send(f'```py\n{i}\n```')
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else:
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self._last_result = ret
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try:
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code = [value[i:i + 1980] for i in range(0, len(value), 1980)]
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for i in code:
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await ctx.send(f'```py\n{i}\n```')
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except Exception as e:
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code = [value[i:i + 1980] for i in range(0, len(value), 1980)]
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for i in code:
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await ctx.send(f'```py\n{i}\n```')
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modifyd_ret = [ret[i:i + 1980] for i in range(0, len(ret), 1980)]
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for i in modifyd_ret:
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await ctx.send(f'```py\n{i}\n```')
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@commands.command(hidden=True)
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async def repl(self, ctx):
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"""
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Start a interactive python shell in chat.
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Only the owner of this bot can use this command.
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Usage:
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- repl < python code >
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Example:
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- repl print(205554)
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"""
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if ctx.author.id not in self.bot.ownerlist:
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return await ctx.send('Only my contributors can use me like this :blush:', delete_after=10)
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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.guild,
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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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msg = await ctx.send('Already running a REPL session in this channel. Exit it with `quit`.')
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self.sessions.add(msg.channel.id)
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await ctx.send('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', check=lambda m: m.content.startswith(
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'`') and m.author == ctx.author and m.channel == ctx.channel)
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cleaned = self.cleanup_code(response.content)
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if cleaned in ('quit', 'exit', 'exit()'):
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msg = await ctx.send('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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try:
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await ctx.send(f'```Python\n{self.get_syntax_error(e)}\n```')
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except Exception as e:
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error = [self.get_syntax_error(e)[i:i + 2000] for i in
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range(0, len(self.get_syntax_error(e)), 2000)]
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for i in error:
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await ctx.send(f'```Python\n{i}\n```')
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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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await ctx.send(f'```Python\n{value}{traceback.format_exc()}\n```')
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continue
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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 = '{}{}'.format(value, result)
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variables['_'] = result
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elif value:
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fmt = value
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try:
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if fmt is not None:
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if len(fmt) > 1980:
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code = [fmt[i:i + 1980] for i in range(0, len(fmt), 1980)]
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for i in code:
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await ctx.send(f'```py\n{i}\n```')
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else:
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await ctx.send(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 ctx.send(f'Unexpected error: `{e}`')
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def setup(bot):
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bot.add_cog(REPL(bot)) |