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Sync with danny0838/zipremove@86a240bf01

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Danny Lin 2025-07-22 19:09:59 +08:00
parent 72673e0709
commit e926a954ed
2 changed files with 1 additions and 67 deletions
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57
Lib/test/test_zipfile/test_core.py
View file

@ -2020,64 +2020,9 @@ def test_repack_prepended_bytes(self):
fh.write(b'dummy ')
fh.write(fz.read())
with zipfile.ZipFile(TESTFN, 'a', self.compression) as zh:
self.assertEqual(zh.data_offset, 6)
for i in ii:
zh.remove(self.test_files[i][0])
zh.repack()
if hasattr(zh, 'data_offset'):
self.assertEqual(zh.data_offset, 6)
# check infolist
self.assertEqual(
[ComparableZipInfo(zi) for zi in zh.infolist()],
[ComparableZipInfo(zi) for zi in expected_zinfos],
)
# check file size
self.assertEqual(os.path.getsize(TESTFN), expected_size)
# make sure the zip file is still valid
with zipfile.ZipFile(TESTFN) as zh:
self.assertIsNone(zh.testzip())
def test_repack_prepended_file_entry(self):
for ii in ([0], [0, 1], [0, 1, 2]):
with self.subTest(remove=ii):
# calculate the expected results
fz = io.BytesIO()
test_files = [data for j, data in enumerate(self.test_files) if j not in ii]
self._prepare_zip_from_test_files(fz, test_files)
fz.seek(0)
with open(TESTFN, 'wb') as fh:
fh.write(b'dummy ')
fh.write(fz.read())
with zipfile.ZipFile(TESTFN) as zh:
expected_zinfos = list(zh.infolist())
expected_size = os.path.getsize(TESTFN)
# do the removal and check the result
fz = io.BytesIO()
with zipfile.ZipFile(fz, 'w') as zh:
for j, (file, data) in enumerate(self.test_files):
if j in ii:
zh.writestr(file, data)
fz.seek(0)
prefix = fz.read()
fz = io.BytesIO()
test_files = [data for j, data in enumerate(self.test_files) if j not in ii]
self._prepare_zip_from_test_files(fz, test_files)
fz.seek(0)
with open(TESTFN, 'wb') as fh:
fh.write(b'dummy ')
fh.write(prefix)
fh.write(fz.read())
with zipfile.ZipFile(TESTFN, 'a', self.compression) as zh:
self.assertEqual(zh.data_offset, 6 + len(prefix))
zh.repack()
self.assertEqual(zh.data_offset, 6)
# check infolist
self.assertEqual(
@ -2267,10 +2212,8 @@ def test_repack_removed_prepended_bytes(self):
fh.write(b'dummy ')
fh.write(fz.read())
with zipfile.ZipFile(TESTFN, 'a', self.compression) as zh:
self.assertEqual(zh.data_offset, 6)
zinfos = [zh.remove(self.test_files[i][0]) for i in ii]
zh.repack(zinfos)
self.assertEqual(zh.data_offset, 6)
# check infolist
self.assertEqual(

11
Lib/zipfile/__init__.py
View file

@ -1453,8 +1453,7 @@ def repack(self, zfile, removed=None):
Side effects:
- Modifies the ZIP file in place.
- Updates zfile.start_dir and zfile.data_offset to account for
removed data.
- Updates zfile.start_dir to account for removed data.
- Sets zfile._didModify to True.
- Updates header_offset and clears _end_offset of referenced
ZipInfo instances.
@ -1559,14 +1558,6 @@ def repack(self, zfile, removed=None):
zfile.start_dir -= entry_offset
zfile._didModify = True
if zfile._data_offset:
try:
offset = filelist[0].header_offset
except IndexError:
offset = zfile.start_dir
if offset < zfile._data_offset:
zfile._data_offset = offset
for zinfo in filelist:
zinfo._end_offset = None