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# ==================================================================================================================== #
# _____ _ _ ____ _ ___ _ _ _ _ _ #
# _ __ _ |_ _|__ ___ | (_)_ __ __ _ / ___| | |_ _| / \ | |__ ___| |_ _ __ __ _ ___| |_(_) ___ _ __ #
# | '_ \| | | || |/ _ \ / _ \| | | '_ \ / _` || | | | | | / _ \ | '_ \/ __| __| '__/ _` |/ __| __| |/ _ \| '_ \ #
# | |_) | |_| || | (_) | (_) | | | | | | (_| || |___| |___ | | / ___ \| |_) \__ \ |_| | | (_| | (__| |_| | (_) | | | | #
# | .__/ \__, ||_|\___/ \___/|_|_|_| |_|\__, (_)____|_____|___/_/ \_\_.__/|___/\__|_| \__,_|\___|\__|_|\___/|_| |_| #
# |_| |___/ |___/ #
# ==================================================================================================================== #
# Authors: #
# Patrick Lehmann #
# #
# License: #
# ==================================================================================================================== #
# Copyright 2017-2024 Patrick Lehmann - Bötzingen, Germany #
# Copyright 2014-2016 Technische Universität Dresden - Germany, Chair of VLSI-Design, Diagnostics and Architecture #
# #
# Licensed under the Apache License, Version 2.0 (the "License"); #
# you may not use this file except in compliance with the License. #
# You may obtain a copy of the License at #
# #
# http://www.apache.org/licenses/LICENSE-2.0 #
# #
# Unless required by applicable law or agreed to in writing, software #
# distributed under the License is distributed on an "AS IS" BASIS, #
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. #
# See the License for the specific language governing permissions and #
# limitations under the License. #
# #
# SPDX-License-Identifier: Apache-2.0 #
# ==================================================================================================================== #
#
"""
Boolean flags are arguments with a name and different pattern for a positive (``True``) and negative (``False``) value.
.. seealso::
* For simple flags. |br|
|rarr| :mod:`~pyTooling.CLIAbstraction.Flag`
* For flags with a value. |br|
|rarr| :mod:`~pyTooling.CLIAbstraction.ValuedFlag`
* For flags that have an optional value. |br|
|rarr| :mod:`~pyTooling.CLIAbstraction.NamedOptionalValuedFlag`
"""
from typing import ClassVar, Union, Iterable, Any, Optional as Nullable
try:
from pyTooling.Decorators import export
from pyTooling.CLIAbstraction.Argument import NamedArgument, ValuedArgument
except (ImportError, ModuleNotFoundError): # pragma: no cover
print("[pyTooling.Versioning] Could not import from 'pyTooling.*'!")
try:
from Decorators import export
from CLIAbstraction.Argument import NamedArgument, ValuedArgument
except (ImportError, ModuleNotFoundError) as ex: # pragma: no cover
print("[pyTooling.Versioning] Could not import directly!")
raise ex
@export
class BooleanFlag(NamedArgument, ValuedArgument):
"""
Class and base-class for all BooleanFlag classes, which represents a flag argument with different pattern for an
enabled/positive (``True``) or disabled/negative (``False``) state.
When deriving a subclass from an abstract BooleanFlag class, the parameters ``pattern`` and ``falsePattern`` are
expected.
**Example:**
* True: ``with-checks``
* False: ``without-checks``
"""
_falsePattern: ClassVar[str]
def __init_subclass__(cls, *args: Any, name: Nullable[str] = None, pattern: str = "with-{0}", falsePattern: str = "without-{0}", **kwargs: Any):
"""This method is called when a class is derived.
:param args: Any positional arguments.
:param pattern: This pattern is used to format an argument when the value is ``True``.
:param falsePattern: This pattern is used to format an argument when the value is ``False``.
:param kwargs: Any keyword argument.
"""
kwargs["name"] = name
kwargs["pattern"] = pattern
super().__init_subclass__(*args, **kwargs)
del kwargs["name"]
del kwargs["pattern"]
ValuedArgument.__init_subclass__(*args, **kwargs)
cls._falsePattern = falsePattern
def __new__(cls, *args: Any, **kwargs: Any):
if cls is BooleanFlag:
raise TypeError(f"Class '{cls.__name__}' is abstract.")
return super().__new__(cls, *args, **kwargs)
def __init__(self, value: bool) -> None:
"""Initializes a BooleanFlag instance.
:param value: Initial value set for this argument instance.
"""
ValuedArgument.__init__(self, value)
def AsArgument(self) -> Union[str, Iterable[str]]:
"""Convert this argument instance to a string representation with proper escaping using the matching pattern based
on the internal name and value.
:return: Formatted argument.
:raises ValueError: If internal name is None.
"""
if self._name is None:
raise ValueError(f"Internal value '_name' is None.")
pattern = self._pattern if self._value is True else self._falsePattern
return pattern.format(self._name)
@export
class ShortBooleanFlag(BooleanFlag, pattern="-with-{0}", falsePattern="-without-{0}"):
"""Represents a :py:class:`BooleanFlag` with a single dash.
**Example:**
* True: ``-with-checks``
* False: ``-without-checks``
"""
def __init_subclass__(cls, *args: Any, name: Nullable[str] = None, pattern: str = "-with-{0}", falsePattern: str = "-without-{0}", **kwargs: Any):
"""This method is called when a class is derived.
:param args: Any positional arguments.
:param pattern: This pattern is used to format an argument when the value is ``True``.
:param falsePattern: This pattern is used to format an argument when the value is ``False``.
:param kwargs: Any keyword argument.
"""
kwargs["name"] = name
kwargs["pattern"] = pattern
kwargs["falsePattern"] = falsePattern
super().__init_subclass__(*args, **kwargs)
def __new__(cls, *args: Any, **kwargs: Any):
if cls is ShortBooleanFlag:
raise TypeError(f"Class '{cls.__name__}' is abstract.")
return super().__new__(cls, *args, **kwargs)
@export
class LongBooleanFlag(BooleanFlag, pattern="--with-{0}", falsePattern="--without-{0}"):
"""Represents a :py:class:`BooleanFlag` with a double dash.
**Example:**
* True: ``--with-checks``
* False: ``--without-checks``
"""
def __init_subclass__(cls, *args: Any, name: Nullable[str] = None, pattern: str = "--with-{0}", falsePattern: str = "--without-{0}", **kwargs: Any):
"""This method is called when a class is derived.
:param args: Any positional arguments.
:param pattern: This pattern is used to format an argument when the value is ``True``.
:param falsePattern: This pattern is used to format an argument when the value is ``False``.
:param kwargs: Any keyword argument.
"""
kwargs["name"] = name
kwargs["pattern"] = pattern
kwargs["falsePattern"] = falsePattern
super().__init_subclass__(*args, **kwargs)
def __new__(cls, *args: Any, **kwargs: Any):
if cls is LongBooleanFlag:
raise TypeError(f"Class '{cls.__name__}' is abstract.")
return super().__new__(cls, *args, **kwargs)
@export
class WindowsBooleanFlag(BooleanFlag, pattern="/with-{0}", falsePattern="/without-{0}"):
"""Represents a :py:class:`BooleanFlag` with a slash.
**Example:**
* True: ``/with-checks``
* False: ``/without-checks``
"""
def __init_subclass__(cls, *args: Any, name: Nullable[str] = None, pattern: str = "/with-{0}", falsePattern: str = "/without-{0}", **kwargs: Any):
"""This method is called when a class is derived.
:param args: Any positional arguments.
:param pattern: This pattern is used to format an argument when the value is ``True``.
:param falsePattern: This pattern is used to format an argument when the value is ``False``.
:param kwargs: Any keyword argument.
"""
kwargs["name"] = name
kwargs["pattern"] = pattern
kwargs["falsePattern"] = falsePattern
super().__init_subclass__(*args, **kwargs)
def __new__(cls, *args: Any, **kwargs: Any):
if cls is WindowsBooleanFlag:
raise TypeError(f"Class '{cls.__name__}' is abstract.")
return super().__new__(cls, *args, **kwargs)
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