Add missing argparseCompat

src/util/argparseCompat.py

@@ -0,0 +1,114 @@
+# This code is taken from CPython Lib/argparse.py and contains BooleanOptionalAction
+# for use in py<3.9
+
+# Author: Steven J. Bethard <steven.bethard@gmail.com>.
+# New maintainer as of 29 August 2019:  Raymond Hettinger <raymond.hettinger@gmail.com>
+
+# Copyright © 2001-2024 Python Software Foundation. All rights reserved.
+# PYTHON SOFTWARE FOUNDATION LICENSE VERSION 2
+# --------------------------------------------
+#
+# 1. This LICENSE AGREEMENT is between the Python Software Foundation
+# ("PSF"), and the Individual or Organization ("Licensee") accessing and
+# otherwise using this software ("Python") in source or binary form and
+# its associated documentation.
+#
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+# distribute, and otherwise use Python alone or in any derivative version,
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+# Agreement.
+
+from argparse import Action
+
+class BooleanOptionalAction(Action):
+    def __init__(self,
+                 option_strings,
+                 dest,
+                 default=None,
+                 type=_deprecated_default,
+                 choices=_deprecated_default,
+                 required=False,
+                 help=None,
+                 metavar=_deprecated_default,
+                 deprecated=False):
+
+        _option_strings = []
+        for option_string in option_strings:
+            _option_strings.append(option_string)
+
+            if option_string.startswith('--'):
+                option_string = '--no-' + option_string[2:]
+                _option_strings.append(option_string)
+
+        # We need `_deprecated` special value to ban explicit arguments that
+        # match default value. Like:
+        #   parser.add_argument('-f', action=BooleanOptionalAction, type=int)
+        for field_name in ('type', 'choices', 'metavar'):
+            if locals()[field_name] is not _deprecated_default:
+                import warnings
+                warnings._deprecated(
+                    field_name,
+                    "{name!r} is deprecated as of Python 3.12 and will be "
+                    "removed in Python {remove}.",
+                    remove=(3, 14))
+
+        if type is _deprecated_default:
+            type = None
+        if choices is _deprecated_default:
+            choices = None
+        if metavar is _deprecated_default:
+            metavar = None
+
+        super().__init__(
+            option_strings=_option_strings,
+            dest=dest,
+            nargs=0,
+            default=default,
+            type=type,
+            choices=choices,
+            required=required,
+            help=help,
+            metavar=metavar,
+            deprecated=deprecated)
+
+
+    def __call__(self, parser, namespace, values, option_string=None):
+        if option_string in self.option_strings:
+            setattr(namespace, self.dest, not option_string.startswith('--no-'))
+
+    def format_usage(self):
+        return ' | '.join(self.option_strings)