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This release adds support for reading 7zip archives and contains several significant fixes. Thank you to all who contributed!

What's Changed

• Retain underlying reader if it's an io.Seeker by @jhwz in https://github.com/mholt/archiver/pull/327
• Enhance FilesFromDisk (close #331) by @mholt in https://github.com/mholt/archiver/pull/332
• fs: Improve Open and Stat on ArchiveFS for streams by @mholt in https://github.com/mholt/archiver/pull/335
• Fix nested directory listing for archives without explicit directory names. by @jeremyje in https://github.com/mholt/archiver/pull/339
• Document caveats with compressed fs.FS by @WeidiDeng in https://github.com/mholt/archiver/pull/344
• return zip.Reader in FileSystem if file is a zip file by @WeidiDeng in https://github.com/mholt/archiver/pull/349
• ignore empty root dir name when compressing file by @WeidiDeng in https://github.com/mholt/archiver/pull/355
• rewrite file matching for fs Open, ReadDir and Stat by @WeidiDeng in https://github.com/mholt/archiver/pull/354
• add Archive method to SevenZip by @nikolaymatrosov in https://github.com/mholt/archiver/pull/364
• zip: fix File.Open not working if called after zip.Extract completes by @ncw in https://github.com/mholt/archiver/pull/367
• Allow Identify to take a nil io.Reader by @ncw in https://github.com/mholt/archiver/pull/370
• Rework ArchiveAsync interface to make it return any archiving errors by @ncw in https://github.com/mholt/archiver/pull/369
• Bump golang.org/x/text from 0.3.7 to 0.3.8 by @dependabot in https://github.com/mholt/archiver/pull/372

New Contributors

• @jeremyje made their first contribution in https://github.com/mholt/archiver/pull/339
• @WeidiDeng made their first contribution in https://github.com/mholt/archiver/pull/344
• @nikolaymatrosov made their first contribution in https://github.com/mholt/archiver/pull/364
• @ncw made their first contribution in https://github.com/mholt/archiver/pull/367
• @dependabot made their first contribution in https://github.com/mholt/archiver/pull/372

Full Changelog: https://github.com/mholt/archiver/compare/v4.0.0-alpha.6...v4.0.0-alpha.8

This release focuses some attention on Identify(), which has a slightly modified signature; please adjust programs accordingly. It can now accept any io.Reader and no longer requires Seek(); however, it returns three values including a new Reader that can re-read the buffered bytes consumed during identification. Callers should use that returned Reader after calling Identify().

What's Changed

• Fix for Identify() failing on empty and small files: by @congop in https://github.com/mholt/archiver/pull/319
• Change Identify API to accept only an io.Reader by @jhwz in https://github.com/mholt/archiver/pull/322

New Contributors

• @congop made their first contribution in https://github.com/mholt/archiver/pull/319
• @jhwz made their first contribution in https://github.com/mholt/archiver/pull/322

Full Changelog: https://github.com/mholt/archiver/compare/v4.0.0-alpha.5...v4.0.0-alpha.6

A couple minor enhancements (including ArchiveAsync()). Thanks for your participation and contributions!

Full Changelog: https://github.com/mholt/archiver/compare/v4.0.0-alpha.4...v4.0.0-alpha.5

A few more bug fixes and enhancements. Thanks for your participation and contributions.

Full Changelog: https://github.com/mholt/archiver/compare/v4.0.0-alpha.3...v4.0.0-alpha.4

Bug fixes and minor-moderate enhancements. Things are looking even better now! Thanks for your participation and contributions.

Full Changelog: https://github.com/mholt/archiver/compare/v4.0.0-alpha.2..v4.0.0-alpha.3

A few enhancements and bug fixes.

v4 is a complete rewrite with a simpler, stream-oriented API. The arc command has yet to be implemented for v4 (please use v3 for now, if you need that).

PR #302 documents the many issues fixed/closed by this new version.

Some of the major new features:

• Stream-oriented APIs (no writing to disk!)
• Simpler APIs (less code and docs!)
• File system abstraction (treat archives like directories!)
• Format identification (by filename or header!)

Many other improvements and simplifications have been made.

The v4 godoc is live. See the README for a tour and code examples. Please try it out and leave your feedback!

Changelog

25e050d add a comment explaining backwards compatibility b736c51 add missing and remove unused modules ca7993e port to github/pierrec/lz4/v4

Changelog

c8f35d3 --ext: option to specify file type fd5996a Add a way to strip top-level folder 10fd729 Add create-evil-tar.go and create-evil-zip.go 858e52c Add exported encoder/decoder opts for zstd a9434ff Add test fea6146 Added IllegalPathError a723054 Added test cases for archive formats b0ffd5a Implement StripComponents to rar 2e9f979 Implement StripComponents to zip 8217ed3 Prevent arbitrary file overwrite via path traversal (Zip Slip attack) be59044 Remove bundling of GoLangCI Lint as a dependency. c7eae9d Resolve a few go lint issues 7d5af0e add double-evil.tar and double-evil.zip inside testdata/testarchives/evilarchives 279e87c use proper mode and type flags