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Re: [PATCH] git-p4: close temporary file before removing

From
AAndrey <ahippo@yandex.ru>
Date
Jul 31, 2019, 14:09 UTC
Message-ID
<2835251564582156@myt6-4218ece6190d.qloud-c.yandex.net>
In-Reply-To
<BL0PR1901MB2097EA8851C2743D46210D38FFDF0@BL0PR1901MB2097.namprd19.prod.outlook.com>
31.07.2019, 09:53, "Philip McGraw" <philip.mcgraw@bentley.com>:
Show 43 quoted lines
>>  30.07.2019, 13:37, "Philip McGraw" <philip.mcgraw@bentley.com>:
>>  > python os.remove() throws exceptions on Windows platform when attempting
>>  > to remove file while it is still open. Need to grab filename while file open,
>>  > close file handle, then remove by name. Apparently other platforms are more
>>  > permissive of removing files while busy.
>>  > reference: https://docs.python.org/3/library/os.html#os.remove
>>  > ---
>>  >  git-p4.py | 4 +++-
>>  >  1 file changed, 3 insertions(+), 1 deletion(-)
>>  >
>>  > diff --git a/git-p4.py b/git-p4.py
>>  > index c71a6832e2..6b9d2a8317 100755
>>  > --- a/git-p4.py
>>  > +++ b/git-p4.py
>>  > @@ -1161,12 +1161,14 @@ def exceedsLargeFileThreshold(self, relPath, contents):
>>  >                  return False
>>  >              contentTempFile = self.generateTempFile(contents)
>>  >              compressedContentFile = tempfile.NamedTemporaryFile(prefix='git-p4-large-file', delete=False)
>>  > + compressedContentFileName = compressedContentFile.name
>>  >              zf = zipfile.ZipFile(compressedContentFile.name, mode='w')
>>  >              zf.write(contentTempFile, compress_type=zipfile.ZIP_DEFLATED)
>>  >              zf.close()
>>  >              compressedContentsSize = zf.infolist()[0].compress_size
>>  >              os.remove(contentTempFile)
>>  > - os.remove(compressedContentFile.name)
>>  > + compressedContentFile.close()
>>  > + os.remove(compressedContentFileName)
>>
>>  I'm not sure why NamedTemporaryFile() is called with delete=False above,
>>  but it appears to me that it can have delete=True instead,
>>  so that there is no need to call os.remove() explicitly
>>  and thus worry about remove vs close ordering at all.
>>
>>  >              if compressedContentsSize > gitConfigInt('git-p4.largeFileCompressedThreshold'):
>>  >                  return True
>>  >          return False
>>  > --
>>  > 2.21.0.windows.1
>>
>>  Thank you,
>>  Andrey.
>
> Thanks Andrey; simpler is certainly better! I will test and re-submit v2 of patch with that approach.
Thank you, that would be great!
-- 
Andrey.
Previous: Philip McGrawNext: Philip McGraw
Message 4 of 8 in “git-p4: close temporary file before removing”
  1. git-p4: close temporary file before removingPhilip McGraw, Jul 30, 2019
  2. AndreyJul 31, 2019
  3. Philip McGrawJul 31, 2019
  4. AndreyJul 31, 2019
  5. Philip McGrawJul 31, 2019
  6. AndreyAug 1, 2019
  7. Philip McGrawAug 1, 2019
  8. AndreyAug 2, 2019

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