[jira] [Work logged] (COMPRESS-477) Support for split zip files

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/COMPRESS-477?focusedWorklogId=355866&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-355866 ]

ASF GitHub Bot logged work on COMPRESS-477:
-------------------------------------------

                Author: ASF GitHub Bot
            Created on: 08/Dec/19 20:40
            Start Date: 08/Dec/19 20:40
    Worklog Time Spent: 10m 
      Work Description: bodewig commented on issue #86: COMPRESS-477 building a split zip
URL: https://github.com/apache/commons-compress/pull/86#issuecomment-562991230
 
 
   https://github.com/bodewig/commons-compress/tree/COMPRESS-477-constructing holds a rebased version of this PR, I'd be happy if you just applied similar changes and pushed it here, no need to have me as contributor inside of your work.
   
   While rebasing I realized that master says the disk number start is a long while this branch uses an int. Actually both master and this branch neglect the possibility of the number of disks requiring Zip64 extra handling. TBH I find the idea of a split ZIP archive that spans more than 64k files a bit disturbing and would address it with a separate change independent of this PR.
   
 
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Issue Time Tracking
-------------------

    Worklog Id:     (was: 355866)
    Time Spent: 11h  (was: 10h 50m)

> Support for split 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
>             Fix For: 1.20
>
>          Time Spent: 11h
>  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}



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