Add public positive_int and finite_float converters (#5969)

Co-authored-by: Kreusada <67752638+Kreusada@users.noreply.github.com>

redbot/core/cog_manager.py

@@ -4,10 +4,10 @@ import pkgutil
 from importlib import import_module, invalidate_caches
 from importlib.machinery import ModuleSpec
 from pathlib import Path
-from typing import TYPE_CHECKING, Union, List, Optional
+from typing import Union, List, Optional
 
 import redbot.cogs
-from redbot.core.commands import BadArgument
+from redbot.core.commands import positive_int
 from redbot.core.utils import deduplicate_iterables
 import discord
 
@@ -21,21 +21,6 @@ from .utils.chat_formatting import box, pagify, humanize_list, inline
 __all__ = ["CogManager"]
 
 
-# Duplicate of redbot.cogs.cleanup.converters.positive_int
-if TYPE_CHECKING:
-    positive_int = int
-else:
-
-    def positive_int(arg: str) -> int:
-        try:
-            ret = int(arg)
-        except ValueError:
-            raise BadArgument(_("{arg} is not an integer.").format(arg=inline(arg)))
-        if ret <= 0:
-            raise BadArgument(_("{arg} is not a positive integer.").format(arg=inline(arg)))
-        return ret
-
-
 class NoSuchCog(ImportError):
     """Thrown when a cog is missing.
 

redbot/core/commands/__init__.py

@@ -28,10 +28,12 @@ from .converter import (
     DictConverter as DictConverter,
     RelativedeltaConverter as RelativedeltaConverter,
     TimedeltaConverter as TimedeltaConverter,
+    finite_float as finite_float,
     get_dict_converter as get_dict_converter,
     get_timedelta_converter as get_timedelta_converter,
     parse_relativedelta as parse_relativedelta,
     parse_timedelta as parse_timedelta,
+    positive_int as positive_int,
     NoParseOptional as NoParseOptional,
     UserInputOptional as UserInputOptional,
     RawUserIdConverter as RawUserIdConverter,

redbot/core/commands/converter.py

@@ -6,6 +6,7 @@ This module contains useful functions and classes for command argument conversio
 Some of the converters within are included provisionally and are marked as such.
 """
 import functools
+import math
 import re
 from datetime import timedelta
 from dateutil.relativedelta import relativedelta
@@ -37,10 +38,12 @@ __all__ = [
     "NoParseOptional",
     "RelativedeltaConverter",
     "TimedeltaConverter",
+    "finite_float",
     "get_dict_converter",
     "get_timedelta_converter",
     "parse_relativedelta",
     "parse_timedelta",
+    "positive_int",
     "CommandConverter",
     "CogConverter",
 ]
@@ -233,6 +236,26 @@ class RawUserIdConverter(dpy_commands.Converter):
 # which is *not* for type checking for the actual implementation
 # and ensure the lies stay correct for how the object should look as a typehint
 
+positive_int = dpy_commands.Range[int, 0, None]
+
+
+if TYPE_CHECKING:
+    finite_float = float
+else:
+
+    def finite_float(arg: str) -> float:
+        """
+        This converts a user provided string into a finite float.
+        """
+        try:
+            ret = float(arg)
+        except ValueError:
+            raise BadArgument(_("`{arg}` is not a number.").format(arg=arg))
+        if not math.isfinite(ret):
+            raise BadArgument(_("`{arg}` is not a finite number.").format(arg=ret))
+        return ret
+
+
 if TYPE_CHECKING:
     DictConverter = Dict[str, str]
 else:

redbot/core/events.py

@@ -2,7 +2,6 @@ import asyncio
 import contextlib
 import platform
 import sys
-import codecs
 import logging
 import traceback
 from datetime import datetime, timedelta, timezone
@@ -17,12 +16,9 @@ from redbot.core import data_manager
 from redbot.core.commands import RedHelpFormatter, HelpSettings
 from redbot.core.i18n import (
     Translator,
-    set_contextual_locale,
-    set_contextual_regional_format,
     set_contextual_locales_from_guild,
 )
-from .utils import AsyncIter
-from .. import __version__ as red_version, version_info as red_version_info, VersionInfo
+from .. import __version__ as red_version, version_info as red_version_info
 from . import commands
 from .config import get_latest_confs
 from .utils._internal_utils import (
@@ -32,7 +28,7 @@ from .utils._internal_utils import (
     fetch_latest_red_version_info,
     send_to_owners_with_prefix_replaced,
 )
-from .utils.chat_formatting import inline, format_perms_list, humanize_timedelta
+from .utils.chat_formatting import inline, format_perms_list
 
 import rich
 from rich import box
@@ -229,6 +225,8 @@ def init_events(bot, cli_flags):
                     return
         if not isinstance(error, commands.CommandNotFound):
             asyncio.create_task(bot._delete_delay(ctx))
+        converter = getattr(ctx.current_parameter, "converter", None)
+        argument = ctx.current_argument
 
         if isinstance(error, commands.MissingRequiredArgument):
             await ctx.send_help()
@@ -241,10 +239,112 @@ def init_events(bot, cli_flags):
             await ctx.send(msg)
             if error.send_cmd_help:
                 await ctx.send_help()
+        elif isinstance(error, commands.RangeError):
+            if isinstance(error.value, int):
+                if error.minimum == 0 and error.maximum is None:
+                    message = _("Argument `{parameter_name}` must be a positive integer.")
+                elif error.minimum is None and error.maximum is not None:
+                    message = _(
+                        "Argument `{parameter_name}` must be an integer no more than {maximum}."
+                    )
+                elif error.minimum is not None and error.maximum is None:
+                    message = _(
+                        "Argument `{parameter_name}` must be an integer no less than {minimum}."
+                    )
+                elif error.maximum is not None and error.minimum is not None:
+                    message = _(
+                        "Argument `{parameter_name}` must be an integer between {minimum} and {maximum}."
+                    )
+            elif isinstance(error.value, float):
+                if error.minimum == 0 and error.maximum is None:
+                    message = _("Argument `{parameter_name}` must be a positive number.")
+                elif error.minimum is None and error.maximum is not None:
+                    message = _(
+                        "Argument `{parameter_name}` must be a number no more than {maximum}."
+                    )
+                elif error.minimum is not None and error.maximum is None:
+                    message = _(
+                        "Argument `{parameter_name}` must be a number no less than {maximum}."
+                    )
+                elif error.maximum is not None and error.minimum is not None:
+                    message = _(
+                        "Argument `{parameter_name}` must be a number between {minimum} and {maximum}."
+                    )
+            elif isinstance(error.value, str):
+                if error.minimum is None and error.maximum is not None:
+                    message = _(
+                        "Argument `{parameter_name}` must be a string with a length of no more than {maximum}."
+                    )
+                elif error.minimum is not None and error.maximum is None:
+                    message = _(
+                        "Argument `{parameter_name}` must be a string with a length of no less than {minimum}."
+                    )
+                elif error.maximum is not None and error.minimum is not None:
+                    message = _(
+                        "Argument `{parameter_name}` must be a string with a length of between {minimum} and {maximum}."
+                    )
+            await ctx.send(
+                message.format(
+                    maximum=error.maximum,
+                    minimum=error.minimum,
+                    parameter_name=ctx.current_parameter.name,
+                )
+            )
+            return
         elif isinstance(error, commands.BadArgument):
+            if isinstance(converter, commands.Range):
+                if converter.annotation is int:
+                    if converter.min == 0 and converter.max is None:
+                        message = _("Argument `{parameter_name}` must be a positive integer.")
+                    elif converter.min is None and converter.max is not None:
+                        message = _(
+                            "Argument `{parameter_name}` must be an integer no more than {maximum}."
+                        )
+                    elif converter.min is not None and converter.max is None:
+                        message = _(
+                            "Argument `{parameter_name}` must be an integer no less than {minimum}."
+                        )
+                    elif converter.max is not None and converter.min is not None:
+                        message = _(
+                            "Argument `{parameter_name}` must be an integer between {minimum} and {maximum}."
+                        )
+                elif converter.annotation is float:
+                    if converter.min == 0 and converter.max is None:
+                        message = _("Argument `{parameter_name}` must be a positive number.")
+                    elif converter.min is None and converter.max is not None:
+                        message = _(
+                            "Argument `{parameter_name}` must be a number no more than {maximum}."
+                        )
+                    elif converter.min is not None and converter.max is None:
+                        message = _(
+                            "Argument `{parameter_name}` must be a number no less than {minimum}."
+                        )
+                    elif converter.max is not None and converter.min is not None:
+                        message = _(
+                            "Argument `{parameter_name}` must be a number between {minimum} and {maximum}."
+                        )
+                elif converter.annotation is str:
+                    if error.minimum is None and error.maximum is not None:
+                        message = _(
+                            "Argument `{parameter_name}` must be a string with a length of no more than {maximum}."
+                        )
+                    elif error.minimum is not None and error.maximum is None:
+                        message = _(
+                            "Argument `{parameter_name}` must be a string with a length of no less than {minimum}."
+                        )
+                    elif error.maximum is not None and error.minimum is not None:
+                        message = _(
+                            "Argument `{parameter_name}` must be a string with a length of between {minimum} and {maximum}."
+                        )
+                await ctx.send(
+                    message.format(
+                        maximum=converter.max,
+                        minimum=converter.min,
+                        parameter_name=ctx.current_parameter.name,
+                    )
+                )
+                return
             if isinstance(error.__cause__, ValueError):
-                converter = ctx.current_parameter.converter
-                argument = ctx.current_argument
                 if converter is int:
                     await ctx.send(_('"{argument}" is not an integer.').format(argument=argument))
                     return