fix: wrap corrupt/truncated/encrypted zip read errors in PackageNotFoundError - #1562
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fix: wrap corrupt/truncated/encrypted zip read errors in PackageNotFoundError#1562gaoflow wants to merge 1 commit into
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When parsing a corrupt, truncated, or unexpectedly encrypted .docx file, ZipFile.read() can raise zlib.error, EOFError, RuntimeError, or BadZipFile. These native exceptions previously escaped from Document(stream), requiring callers to catch multiple unrelated types. _ZipPkgReader.__init__ now wraps BadZipFile on construction, and blob_for() wraps BadZipFile, zlib.error, EOFError, and RuntimeError, re-raising them all as PackageNotFoundError so callers have a single consistent docx-level exception to handle. Fixes python-openxml#1561.
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Summary
When docx.Document(stream) parses a malformed, corrupt, or unexpectedly encrypted .docx file, low-level exceptions from Python's zipfile / zlib modules escape the library boundary instead of being surfaced as a consistent python-docx exception. Callers are left catching zlib.error, EOFError, RuntimeError, or BadZipFile — unrelated internal types they should never need to know about.
This PR fixes the two callsites in _ZipPkgReader:
Callers already catch PackageNotFoundError; no API change is required on their side.
Closes #1561.
Test plan