Re: All my POI built Excel files are suddenly corrupt?

The code that zips sxssfworkbooks is basically this PR plus a few changes.
https://github.com/apache/poi/pull/154

Zip64Mode.Always - the zip writing logic is mainly in the code in the PR ab=
ove with a bit of help from commons-compress.
Any other Zip64Mode and the zip writing is done using commons-compress but =
with the specific Zip64Mode applied.






On Wednesday 6 November 2024 at 15:56:45 GMT+1, Andreas Reichel <andreas@ma=
nticore-projects.com> wrote:=20





Dear All,

there is feedback from
LibreOffice:=C2=A0https://ask.libreoffice.org/t/is-spreadsheet-corrupt-or-n=
ot/113519/4?u=3Dwarwound

In summary, they claim the ZIP file was invalid since it contained
holes/unused blocks.

An additional check for this has been added only
recently=C2=A0https://gerrit.libreoffice.org/c/core/+/170571=C2=A0(which co=
nfirms
my observation).

So do we need to turn to Commons Compress now?


Cheers
Andreas