update max_len limit for windows to 32767

[fthmko]

The path length limitation has been increased to 32767 since Windows 10 version 1607 with a registry setting.
Additionally, during Python installation, there is an option disable path length limit which helps achieve this.

I think it’s more reasonable to update this limitation from 260 to 32767 or provide a configuration option.

[thombashi]

@fthmko
Thank you for your feedback.
However, I don't think it's appropriate to change the default value at this time because long paths require support on the app side.
The maximum path length can be changed with the max_len argument of the functions.
Is that not enough?

[fthmko]

Thank you for your reply, I respect your decision.
However, another argument or configuration is also necessary.

At this time, the max_len argument in validate_filepath will be overridden by min(self._max_len, platform_max_len) in the BaseFile class. The value of platform_max_len argument is set to the platform's default because it's not exposed.

As a result, larger value will not have any effect.

To validate long paths, I have to modify the internal _max_len, which isn't an ideal practice.

validator = FilePathValidator(platform='auto')
validator._max_len = 32767
validator.validate(some_long_path)

[thombashi]

That is certainly true.
However, changing this behavior would be a breaking change, so even if it is fixed, it will probably be in the next major version update (v4).