sevenzip

A reader for 7-zip archives inspired by archive/zip.

Current status:

• Pure Go, no external libraries or binaries needed.
• Handles uncompressed headers, (7za a -mhc=off test.7z ...).
• Handles compressed headers, (7za a -mhc=on test.7z ...).
• Handles password-protected versions of both of the above (7za a -mhc=on|off -mhe=on -ppassword test.7z ...).
• Handles archives split into multiple volumes, (7za a -v100m test.7z ...).
• Validates CRC values as it parses the file.
• Supports BCJ2, Brotli, Bzip2, Copy, Deflate, Delta, LZ4, LZMA, LZMA2 and Zstandard methods.
• Implements the fs.FS interface so you can treat an opened 7-zip archive like a filesystem.

More examples of 7-zip archives are needed to test all of the different combinations/algorithms possible.