v4.0.0-alpha.9

Alpha 9 introduces some new features, and also important fixes and optimizations, especially related to FileSystems and tar archives.

⚠️ This release has some breaking changes to the API, but fairly minor all things considered. Be advised that the next release may have a new package name: archives. See #427.

• Using fs.WalkDir() is now much faster when walking large tar archives.
• A FileSystem can be created from a stream instead of just a file name (but the stream must be a Reader, ReaderAt, and Seeker).
• Added lzip compression.
• Renamed CompressedArchive to Archive since compression is optional.
• Split Archival into Archival and Extraction, since not all archive formats can archive (some, like rar and 7z, can only extract).
• Removed the filename filter argument from Extract() since it was mostly pointless and even confusing.
• Brotli-compressed files can now be identified by their stream, maybe... sometimes (it's worth a shot; brotli has no notable magic number or header so we just try our best).
• Removed ErrStopWalk in favor of fs.SkipAll which is apparently the same thing
• Renamed ErrNoMatch to NoMatch since it is a sentinel (error) value and not an actual error.

What's Changed

• Bugfix: Tar files created in their target directory shouldn't recurse infinitely by @drewstinnett in #384
• zlib format incorrectly matches on ASCII files starting with the letter x by @dpgarrick in #386
• Option to use number for user and/or group names by @breezerider in #385
• Fix create archive to a continuous writing source file failed by @halfcrazy in #388
• 7z: Fix iteration bug by @SheltonZhu in #394
• Add lzip support by @sorairolake in #401
• Expose gzip.Reader.Multistream by @rgmz in #407
• zip: Fix compression method not set without SelectiveCompression enabled (closes #418) by @hevav in #419
• chore(go.mod): Switch to upstream lzip package by @sorairolake in #422
• Upgrade rardecode to v2.0.0-beta.3 by @rgmz in #423
• Refactor FS types; improve performance by @mholt in #426

New Contributors

• @drewstinnett made their first contribution in #384
• @dpgarrick made their first contribution in #386
• @breezerider made their first contribution in #385
• @SheltonZhu made their first contribution in #394
• @sorairolake made their first contribution in #401
• @rgmz made their first contribution in #407
• @hevav made their first contribution in #419

Full Changelog: v4.0.0-alpha.8...v4.0.0-alpha.9