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Posted to issues@commons.apache.org by "Glavo (Jira)" <ji...@apache.org> on 2022/05/14 07:55:00 UTC

[jira] [Created] (COMPRESS-621) ZipFile does not support prepending additional data to the zip content

Glavo created COMPRESS-621:
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             Summary: ZipFile does not support prepending additional data to the zip content
                 Key: COMPRESS-621
                 URL: https://issues.apache.org/jira/browse/COMPRESS-621
             Project: Commons Compress
          Issue Type: Improvement
          Components: Archivers
    Affects Versions: 1.21
            Reporter: Glavo


In general, Zip files support placing arbitrary content before their body without affecting their compliance.

Here is an example:

[https://github.com/huanghongxun/HMCL/releases/download/v3.5.2.218/HMCL-3.5.2.218.exe]

 

This is actually a jar file, but we prepend an exe launcher to it, so it can be used both as a jar and as an exe.

java.util.zip.ZipFile can open and read it normally, but org.apache.commons.compress.archivers.zip.ZipFile can open it but cannot read any entries.

 



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