From 7e59b5cec2f267820feeeeb63a20814fe67d61e3 Mon Sep 17 00:00:00 2001 From: "Philip.McGraw" Date: Thu, 1 Aug 2019 11:35:14 -0400 Subject: [PATCH] git-p4: auto-delete named temporary file Avoid double-open exceptions on Windows platform when calculating for lfs compressed size threshold (git-p4.largeFileCompressedThreshold) comparisons. Take new approach using the NamedTemporaryFile() file-like object as input to the ZipFile() which auto-deletes after implicit close leaving with scope. Original code had double-open exception on Windows platform because file still open from NamedTemporaryFile() using generated filename instead of object. Thanks to Andrey for patiently suggesting several iterations on this change for avoiding exceptions! Also print error details after resulting IOError to make debugging cause of exception less mysterious when it has nothing to do with "git version recent enough." Signed-off-by: Philip.McGraw Reviewed-by: Andrey Mazo --- git-p4.py | 13 ++++++------- 1 file changed, 6 insertions(+), 7 deletions(-) diff --git a/git-p4.py b/git-p4.py index c71a6832e2fa0a..33bdb14fd11b14 100755 --- a/git-p4.py +++ b/git-p4.py @@ -1160,13 +1160,11 @@ def exceedsLargeFileThreshold(self, relPath, contents): if contentsSize <= gitConfigInt('git-p4.largeFileCompressedThreshold'): return False contentTempFile = self.generateTempFile(contents) - compressedContentFile = tempfile.NamedTemporaryFile(prefix='git-p4-large-file', delete=False) - zf = zipfile.ZipFile(compressedContentFile.name, mode='w') - zf.write(contentTempFile, compress_type=zipfile.ZIP_DEFLATED) - zf.close() - compressedContentsSize = zf.infolist()[0].compress_size + compressedContentFile = tempfile.NamedTemporaryFile(prefix='git-p4-large-file', delete=True) + with zipfile.ZipFile(compressedContentFile, mode='w') as zf: + zf.write(contentTempFile, compress_type=zipfile.ZIP_DEFLATED) + compressedContentsSize = zf.infolist()[0].compress_size os.remove(contentTempFile) - os.remove(compressedContentFile.name) if compressedContentsSize > gitConfigInt('git-p4.largeFileCompressedThreshold'): return True return False @@ -3514,8 +3512,9 @@ def importHeadRevision(self, revision): self.updateOptionDict(details) try: self.commit(details, self.extractFilesFromCommit(details), self.branch) - except IOError: + except IOError as err: print("IO error with git fast-import. Is your git version recent enough?") + print("IO error details: {}".format(err)) print(self.gitError.read()) def openStreams(self):