fix: deb files show their contents instead of "unknown" by iCrazeiOS · Pull Request #340 · sarensw/MacPacker

iCrazeiOS · 2026-10-14T08:49:34Z

What & why

.deb files previously opened as a single entry named "unknown" instead of their package members. Two causes, fixed together:

The nested-archive descent in sevenzip_bridge.cpp drilled through the deb's compression wrapper, which has no usable kpidPath. It now skips the kpidMainSubfile descent for deb so the archive's own members are listed.
Some debs compress their payload with LZMA, which MacPacker didn't recognize at all. Adds .lzma and .tar.lzma as openable/extractable formats via the 7-Zip engine (catalog entries, document types in Info.plist / Info_Store.plist, README format-table update).

Disclosure: AI was the primary author of this change. I reviewed the diff, built and tested it myself, and the verification below is from my own runs. Opened from my human account.

How it was verified

Tested with various deb archives using different algorithms. All tests pass. Screenshots below

Before:

After:

Checklist

Verification evidence is included above
Changelog entry added to Config/products/macpacker.json
AI involvement disclosed, if AI was the primary author — see AI_CONTRIBUTING.md

Summary by CodeRabbit

New Features
- Added support for opening and extracting LZMA archives, including .tar.lzma files.
- Registered .lzma and .tar.lzma files so they can be opened directly with MacPacker.
- Added LZMA support to the list of supported compression formats.
Bug Fixes
- Fixed an issue that could prevent the contents of DEB archives from being listed correctly. Archive contents now appear as expected when browsing DEB files.

coderabbitai · 2026-10-14T08:49:53Z

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📒 Files selected for processing: 1

Config/products/macpacker.json

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Config/products/macpacker.json

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📝 Walkthrough

The pull request adds LZMA and tar.lzma format support, registers both extensions as macOS document types, and changes nested archive probing for deb files. It also updates the README and adds 1.1.0 changelog entries.

Changes: LZMA Format Support

Layer / File(s)	Summary
LZMA format declarations `Modules/Sources/Core/Formats/Catalog.json`, `README.md`, `Config/products/macpacker.json`	The format catalog adds `lzma` and `tar.lzma`. The README lists `lzma` as a supported compression format. The changelog adds an LZMA feature entry.
macOS document registrations `MacPacker/Info.plist`, `MacPacker/Info_Store.plist`	Both plist files register `.lzma` and `.tar.lzma` as Viewer document types with their content type identifiers.

Debian Archive Probing

Layer / File(s)	Summary
Nested archive traversal `Modules/Sources/CSevenZip/sevenzip_bridge.cpp`, `Config/products/macpacker.json`	Nested archive probing skips main-subfile traversal for `deb` archives. Other formats continue to use the nested-stream path. The changelog records the deb content-listing fix.

Priority: ⬇️ Low

Estimated code review effort: 2 (Simple) | ~15 minutes

Change: Bug fix

Merge Risk: ⚪ Minimal · up to c0f22

No actionable issue is established for this change; it is mergeable after normal checks.

Pre-merge checks: 5

Check name	Status	Explanation
Description Check		Check skipped - CodeRabbit’s high-level summary is enabled.
Title check		The title clearly and concisely describes the primary change: fixing `.deb` archives so they display their contents instead of `unknown`.
Docstring Coverage		Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 2 functions across 1 files. (1 skipped: 1 …
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.

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Explanation

Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 2 functions across 1 files. (1 skipped: 1 unsupported.)

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Inline comments:
Review comments at @MacPacker/Info.plist:
- Line 238: Update the LSItemContentTypes arrays in both MacPacker/Info.plist
(line 238) and MacPacker/Info_Store.plist (line 238) to include the UTType for
.tar.lzma, ensuring each document declaration registers a non-empty content
type.

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Config/products/macpacker.json
MacPacker/Info.plist
MacPacker/Info_Store.plist
Modules/Sources/CSevenZip/sevenzip_bridge.cpp
Modules/Sources/Core/Formats/Catalog.json
README.md

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…#340) - Bridge: main's nesting loop again, with an early break for a deb. - Tests: a deb as dpkg-deb writes it lists its members, not "unknown"; tar.lzma and tlzma open as tar. Fixtures from MacPacker-TestArchives#15: a dpkg-deb deb, and the lzma tarballs as real LZMA (they were xz). - tlzma is recognised, like tgz beside tar.gz. - Finder and Quick Look: import org.tukaani.lzma-archive and org.tukaani.tar-lzma-archive. macOS declares neither, so .lzma had no app on a clean Mac. The tar.lzma document type that claimed an undeclared type is gone. - Changelog: both items move from the released 1.1.0 and 1.0.0 blocks to a new 1.2.0 block, in all 21 languages.

# Conflicts: # README.md

sarensw · 2026-10-21T23:10:02Z

@iCrazeiOS Thanks for the PR. This one is now in the first v1.2 beta.

https://github.com/sarensw/MacPacker/releases/tag/v1.2.0-beta.1

iCrazeiOS · 2026-10-22T03:27:31Z

Great, thanks 😊

iCrazeiOS added 3 commits October 5, 2026 11:53

feat: LZMA support

bed9cb9

fix: deb files no longer only show "unknown" file entry

4ab9951

Merge branch 'sarensw:main' into main

6f23214

fix: add changelog entries for deb contents and LZMA support

3ab1dc4

coderabbitai Bot reviewed Oct 14, 2026

View reviewed changes

Comment thread MacPacker/Info.plist Outdated

iCrazeiOS added 4 commits October 14, 2026 12:11

add lzma UTType

fdad125

add docstring as requested by coderabbit

180e838

Merge branch 'sarensw:main' into main

5e6a86e

Merge branch 'sarensw:main' into main

c0f225f

sarensw self-assigned this Oct 21, 2026

sarensw added this to the v1.2 milestone Oct 21, 2026

sarensw added 2 commits October 21, 2026 14:48

Merge branch 'sarensw:main' into main

31209f7

# Conflicts: # README.md

sarensw mentioned this pull request Oct 21, 2026

ci: bump workflows-macos to v0.5.10 (LeanBytes/workflows-macos#34) #365

Merged

Merge branch 'sarensw:main' into main

8bd3ee2

sarensw merged commit b459184 into sarensw:main Oct 21, 2026
6 checks passed

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fix: deb files show their contents instead of "unknown" - #340

fix: deb files show their contents instead of "unknown"#340
sarensw merged 11 commits into
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