[jira] [Commented] (COMPRESS-540) Random access on Tar archive
[ https://issues.apache.org/jira/browse/COMPRESS-540?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17296880#comment-17296880 ] Robin Schimpf commented on COMPRESS-540: >From my point of view it is complete. Everything the TarArchiveInputStream >supports is also supported by the TarFile implementation. > Random access on Tar archive > > > Key: COMPRESS-540 > URL: https://issues.apache.org/jira/browse/COMPRESS-540 > Project: Commons Compress > Issue Type: Improvement >Reporter: Robin Schimpf >Priority: Major > Fix For: 1.21 > > Time Spent: 10h 40m > Remaining Estimate: 0h > > 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 -- This message was sent by Atlassian Jira (v8.3.4#803005)
[jira] [Commented] (COMPRESS-540) Random access on Tar archive
[ https://issues.apache.org/jira/browse/COMPRESS-540?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17296642#comment-17296642 ] Stefan Bodewig commented on COMPRESS-540: - I think this is complete by now, isn't it? > Random access on Tar archive > > > Key: COMPRESS-540 > URL: https://issues.apache.org/jira/browse/COMPRESS-540 > Project: Commons Compress > Issue Type: Improvement >Reporter: Robin Schimpf >Priority: Major > Fix For: 1.21 > > Time Spent: 10h 40m > Remaining Estimate: 0h > > 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 -- This message was sent by Atlassian Jira (v8.3.4#803005)
