[
https://issues.apache.org/jira/browse/COMPRESS-477?focusedWorklogId=333400&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-333400
]
ASF GitHub Bot logged work on COMPRESS-477:
-------------------------------------------
Author: ASF GitHub Bot
Created on: 24/Oct/19 13:29
Start Date: 24/Oct/19 13:29
Worklog Time Spent: 10m
Work Description: PeterAlfreadLee commented on issue #84: COMPRESS-477
Add support for extracting splitted zip files
URL: https://github.com/apache/commons-compress/pull/84#issuecomment-545918376
I‘m not sure if I need to add the zip split support for
`ZipArchiveInputStream`.
It seems the `ZipArchiveInputStream` just ignored the Central Directory
Header and the End Of Central Directory Record. It just read the Local File
Header and extract file by file.
Support for zip split of `ZipArchiveInputStream` seems pretty easy : just
create an input stream that combine all zip split segments and ignore the first
4 bytes of Zip Split Signature.
Please let me know if I need to add the support for splitted zip of
`ZipArchiveInputStream`
----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
us...@infra.apache.org
Issue Time Tracking
-------------------
Worklog Id: (was: 333400)
Time Spent: 20m (was: 10m)
> Support for splitted zip files
> ------------------------------
>
> Key: COMPRESS-477
> URL: https://issues.apache.org/jira/browse/COMPRESS-477
> Project: Commons Compress
> Issue Type: New Feature
> Components: Archivers
> Affects Versions: 1.18
> Reporter: Luís Filipe Nassif
> Priority: Major
> Labels: zip
> Time Spent: 20m
> Remaining Estimate: 0h
>
> It would be very useful to support splitted zip files. I've read
> [https://pkware.cachefly.net/webdocs/casestudies/APPNOTE.TXT] and understood
> that simply concatenating the segments and removing the split signature
> 0x08074b50 from first segment would be sufficient, but it is not that simple
> because compress fails with exception below:
> {code}
> Caused by: java.util.zip.ZipException: archive's ZIP64 end of central
> directory locator is corrupt.
> at
> org.apache.commons.compress.archivers.zip.ZipFile.positionAtCentralDirectory64(ZipFile.java:924)
> ~[commons-compress-1.18.jar:1.18]
> at
> org.apache.commons.compress.archivers.zip.ZipFile.positionAtCentralDirectory(ZipFile.java:901)
> ~[commons-compress-1.18.jar:1.18]
> at
> org.apache.commons.compress.archivers.zip.ZipFile.populateFromCentralDirectory(ZipFile.java:621)
> ~[commons-compress-1.18.jar:1.18]
> at
> org.apache.commons.compress.archivers.zip.ZipFile.<init>(ZipFile.java:295)
> ~[commons-compress-1.18.jar:1.18]
> at
> org.apache.commons.compress.archivers.zip.ZipFile.<init>(ZipFile.java:280)
> ~[commons-compress-1.18.jar:1.18]
> at
> org.apache.commons.compress.archivers.zip.ZipFile.<init>(ZipFile.java:236)
> ~[commons-compress-1.18.jar:1.18]
> {code}
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
