Re: [PATCH] git-p4: import the ctypes module

From: Etienne Girard <etienne.g.girard@gmail.com>
Date: Oct 21, 2015, 09:54 UTC
Message-ID: <CAJA=mv5ui6OLc=0OSJg+k5a6bgSxwX=waLmyxtV4=ikWBkXPQg@mail.gmail.com>
In-Reply-To: <CAJA=mv7N=PmL69kgZRjq8P6J_qsfUbLx76WguhvqPrG2o1UFww@mail.gmail.com>

I was wrong, the script doesn't work on my machine if ctypes is not imported regardless of python version. I guess I was confused by using a version of git-p4 before ctypes was introduced, the failing version and the patched version, as well as several python versions.

Sorry for this misleading claim, and thanks for the quick fix.

2015-10-21 10:23 GMT+02:00 Etienne Girard <etienne.g.girard@gmail.com>:

Show 48 quoted lines

> Hello,
>
> I couldn't work further on this yesterday (but I read
> Documentation/SubmittingPatches, which is a good start I guess). The
> diff proposed by Dennis works on my machine, I'll try to figure out
> why the original script worked with 2.7.10.
>
> Thanks
>
> 2015-10-21 1:00 GMT+02:00 Luke Diamand <luke@diamand.org>:
>> On 20/10/15 20:36, Junio C Hamano wrote:
>>>
>>> Dennis Kaarsemaker <dennis@kaarsemaker.net> writes:
>>>
>>>>> I do not follow Python development, but does the above mean that
>>>>> with recent 2.x you can say ctypes without first saying "import
>>>>> ctypes"?  It feels somewhat non-pythonesque that identifiers like
>>>>> this is given to you without you asking with an explicit 'import',
>>>>> so I am puzzled.
>>>>
>>>>
>>>> No, you cannot do that. The reason others may not have noticed this bug
>>>> is that
>>>> in git-p4.py, ctypes is only used on windows.
>>>>
>>>>   111     if platform.system() == 'Windows':
>>>>   112         free_bytes = ctypes.c_ulonglong(0)
>>>>   113
>>>> ctypes.windll.kernel32.GetDiskFreeSpaceExW(ctypes.c_wchar_p(os.getcwd()),
>>>> None, None, ctypes.pointer(free_bytes))
>>>>
>>>> The fact that it works for the OP with 2.7.10 is puzzling (assuming that
>>>> it's
>>>> on the same system).
>>>
>>>
>>> Exactly.  That is where my "I am puzzled" comes from.
>>>
>>> The patch looks obviously the right thing to do.  Luke?  Lars?
>>
>>
>> It looks sensible to me, and works fine on Linux, thanks. ack.
>>
>> I can't test on Windows today but I can't see why it wouldn't work.
>>
>> Luke
>>
>>