[COMPRESS-540] Random access on Tar archive

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.21
• Assignee: Unassigned
• Reporter: Robin Schimpf
• Created: 07/Jul/20 05:59
• Updated: 07/Mar/21 15:00
• Resolved: 07/Mar/21 15:00

Description

The TarArchiveInputStream only provides sequential access. If only a small amount of files from the archive is needed large amount of data in the input stream needs to be skipped.

Therefore I was working on a implementation to provide random access to TarFiles equal to the ZipFile api. The basic idea behind the implementation is the following

• Random access is backed by a SeekableByteChannel
• Read all headers of the tar file and save the place to the data of every header
• User can request an input stream for any entry in the archive multiple times

Issue Links

• links to: #113