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"""
.. codeauthor:: Tsuyoshi Hombashi <tsuyoshi.hombashi@gmail.com>
"""
from .._common import strip_ansi_escape
from .._const import DefaultValue, ParamKey
from ..error import TypeConversionError
from ._interface import AbstractValueConverter
class BoolConverter(AbstractValueConverter):
def force_convert(self):
if isinstance(self._value, int):
return bool(self._value)
try:
return self.__strict_strtobool(self._value)
except ValueError:
pass
if self._params.get(ParamKey.STRIP_ANSI_ESCAPE, DefaultValue.STRIP_ANSI_ESCAPE):
try:
return self.__strict_strtobool(strip_ansi_escape(self._value))
except (TypeError, ValueError):
pass
raise TypeConversionError(f"failed to force_convert to bool: type={type(self._value)}")
@staticmethod
def __strict_strtobool(value):
if isinstance(value, bool):
return value
try:
lower_text = value.casefold()
except AttributeError:
raise ValueError(f"invalid value '{str(value)}'")
if lower_text in ["true"]:
return True
elif lower_text in ["false"]:
return False
raise ValueError(f"invalid value '{str(value)}'")
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