FazBrowse GitHub Viewer | Trending |
URL:
| Home
Tools: [Download Repo ZIP]   [Original HTTPS Page]

gh-51067: Extract `_read_local_file_header()` as a module-level function by danny0838 · Pull Request #152139 · python/cpython · GitHub

  1. python
  2. cpython

Repository navigation

gh-51067: Extract _read_local_file_header() as a module-level function #152139

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
StanFromIreland merged 1 commit into from
Jun 25, 2026
Conversation 2 Commits 1 Checks 59 Files changed
Merged

gh-51067: Extract _read_local_file_header() as a module-level function #152139

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension .py  (1) All 1 file type selected
Viewed files
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Unified
Split
Hide whitespace
Diff view
Unified
Split
Hide whitespace
29 changes: 12 additions & 17 deletions Lib/zipfile/__init__.py
Show comments
View file
Open in desktop
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode characters
Show hidden characters
Original file line number Diff line number Diff line change
Expand Up @@ -418,6 +418,15 @@ def _sanitize_filename(filename):
filename = filename.replace(os.altsep, "/")
return filename

def _read_local_file_header(fp):
fheader = fp.read(sizeFileHeader)
if len(fheader) != sizeFileHeader:
raise BadZipFile("Truncated file header")
fheader = struct.unpack(structFileHeader, fheader)
if fheader[_FH_SIGNATURE] != stringFileHeader:
raise BadZipFile("Bad magic number for file header")
return fheader


class ZipInfo:
"""Class with attributes describing each file in the ZIP archive."""
Expand Down Expand Up @@ -1648,7 +1657,7 @@ def _validate_local_file_entry_sequence(self, fp, start_offset, end_offset, chec
def _validate_local_file_entry(self, fp, offset, end_offset):
fp.seek(offset)
try:
fheader = self._read_local_file_header(fp)
fheader = _read_local_file_header(fp)
except BadZipFile:
return None

Expand Down Expand Up @@ -1714,15 +1723,6 @@ def _validate_local_file_entry(self, fp, offset, end_offset):

return entry_size

def _read_local_file_header(self, fp):
fheader = fp.read(sizeFileHeader)
if len(fheader) != sizeFileHeader:
raise BadZipFile("Truncated file header")
fheader = struct.unpack(structFileHeader, fheader)
if fheader[_FH_SIGNATURE] != stringFileHeader:
raise BadZipFile("Bad magic number for file header")
return fheader

def _scan_data_descriptor(self, fp, offset, end_offset, zip64):
dd_fmt = '<LLQQ' if zip64 else '<LLLL'
dd_size = struct.calcsize(dd_fmt)
Expand Down Expand Up @@ -1825,7 +1825,7 @@ def _trace_compressed_block_end(self, fp, offset, end_offset, decompressor,

def _calc_local_file_entry_size(self, fp, zinfo):
fp.seek(zinfo.header_offset)
fheader = self._read_local_file_header(fp)
fheader = _read_local_file_header(fp)

if zinfo.flag_bits & _MASK_USE_DATA_DESCRIPTOR:
zip64 = fheader[_FH_UNCOMPRESSED_SIZE] == 0xffffffff
Expand Down Expand Up @@ -2215,12 +2215,7 @@ def open(self, name, mode="r", pwd=None, *, force_zip64=False):
self._fpclose, self._lock, lambda: self._writing)
try:
# Skip the file header:
fheader = zef_file.read(sizeFileHeader)
if len(fheader) != sizeFileHeader:
raise BadZipFile("Truncated file header")
fheader = struct.unpack(structFileHeader, fheader)
if fheader[_FH_SIGNATURE] != stringFileHeader:
raise BadZipFile("Bad magic number for file header")
fheader = _read_local_file_header(zef_file)

fname = zef_file.read(fheader[_FH_FILENAME_LENGTH])
if fheader[_FH_EXTRA_FIELD_LENGTH]:
Expand Down
Loading
Back | FazBrowse Home | New Git URL