From 4e30efea756dc9b4067a662047411dd7621ac1aa Mon Sep 17 00:00:00 2001
From: sgoudham <sgoudham@gmail.com>
Date: Sat, 12 Sep 2020 18:45:15 +0100
Subject: [PATCH] Copy pasted eval command :pepelaugh:

---
 cogs/help.py | 104 ++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 103 insertions(+), 1 deletion(-)

diff --git a/cogs/help.py b/cogs/help.py
index 4e9e3b51..3c421ead 100644
--- a/cogs/help.py
+++ b/cogs/help.py
@@ -18,9 +18,12 @@
 # Help paginator by Rapptz
 # Edited by F4stZ4p
 # Edited by Hamothy
-
 import asyncio
 import datetime
+import io
+import textwrap
+import traceback
+from contextlib import redirect_stdout
 from typing import Optional
 
 import discord
@@ -619,6 +622,36 @@ def error_handling(self, author):
     return ErrorHandlingEmbed
 
 
+def cleanup_code(content):
+    """Automatically removes code blocks from the code."""
+    # remove ```py\n```
+    if content.startswith('```') and content.endswith('```'):
+        return '\n'.join(content.split('\n')[1:-1])
+
+    # remove `foo`
+    return content.strip('` \n')
+
+
+def paginate(text: str):
+    """Simple generator that paginates text."""
+    last = 0
+    pages = []
+    for curr in range(0, len(text)):
+        if curr % 1980 == 0:
+            pages.append(text[last:curr])
+            last = curr
+            appd_index = curr
+    if appd_index != len(text) - 1:
+        pages.append(text[last:curr])
+    return list(filter(lambda a: a != '', pages))
+
+
+def get_syntax_error(e):
+    if e.text is None:
+        return f'```py\n{e.__class__.__name__}: {e}\n```'
+    return f'```py\n{e.text}{"^":>{e.offset}}\n{e.__class__.__name__}: {e}```'
+
+
 # Set up the Cog
 class Help(Cog):
     """Help Commands!"""
@@ -690,6 +723,75 @@ class Help(Cog):
             prefix = self.bot.get_prefix_for_guild(ctx.guild.id)
             await self.bot.generate_embed(ctx, desc=f"**The current guild prefix is `{prefix}`**")
 
+    @command(name="eval", hidden=True)
+    @is_owner()
+    async def _eval(self, ctx, *, body):
+        """
+        Evaluates python code
+        Gracefully yoinked from (https://github.com/fourjr/eval-bot)"""
+        
+        env = {
+            'ctx': ctx,
+            'bot': self.bot,
+            'channel': ctx.channel,
+            'author': ctx.author,
+            'guild': ctx.guild,
+            'message': ctx.message,
+            'source': inspect.getsource
+        }
+
+        env.update(globals())
+
+        body = cleanup_code(body)
+        stdout = io.StringIO()
+        err = out = None
+
+        to_compile = f'async def func():\n{textwrap.indent(body, "  ")}'
+
+        try:
+            exec(to_compile, env)
+        except Exception as e:
+            err = await ctx.send(f'```py\n{e.__class__.__name__}: {e}\n```')
+            return await ctx.message.add_reaction('\u2049')
+
+        func = env['func']
+        try:
+            with redirect_stdout(stdout):
+                ret = await func()
+        except Exception as e:
+            value = stdout.getvalue()
+            err = await ctx.send(f'```py\n{value}{traceback.format_exc()}\n```')
+        else:
+            value = stdout.getvalue()
+            if ret is None:
+                if value:
+                    try:
+                        out = await ctx.send(f'```py\n{value}\n```')
+                    except:
+                        paginated_text = paginate(value)
+                        for page in paginated_text:
+                            if page == paginated_text[-1]:
+                                out = await ctx.send(f'```py\n{page}\n```')
+                                break
+                            await ctx.send(f'```py\n{page}\n```')
+            else:
+                try:
+                    out = await ctx.send(f'```py\n{value}{ret}\n```')
+                except:
+                    paginated_text = paginate(f"{value}{ret}")
+                    for page in paginated_text:
+                        if page == paginated_text[-1]:
+                            out = await ctx.send(f'```py\n{page}\n```')
+                            break
+                        await ctx.send(f'```py\n{page}\n```')
+
+        if out:
+            await ctx.message.add_reaction('\u2705')  # tick
+        elif err:
+            await ctx.message.add_reaction('\u2049')  # x
+        else:
+            await ctx.message.add_reaction('\u2705')
+
     @command(name="support")
     async def support(self, ctx):
         """Joining Support Server And Sending Feedback"""