VRT File Support Within a Zstd-Compressed Zip
Jordan Dauble via gdal-dev <[email protected]> Sun, 19 Jul 2026 21:17:10 +0000
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Good afternoon, I would like to request that a new feature be added to GDAL=
. Our team has found that while both libzip and GDAL support Zstd compressi=
on, the support does not extend to loading vrt files within a Zstd-compress=
ed zip. We have a use case where the vsizip file handler is used on a Zstd-=
compressed zip, such as
ogr2ogr outputTest.gpkg /vsizip/{<zip_filename>}/extent.geojson.
We believe the following files would require modification to support this f=
eature:
port/cpl_minizip_unzip.cpp
port/cpl_vsil_gzip.cpp
Jordan Dauble
SimBlocks LLC, Founder & CEO
407-641-5218
253 Plaza Dr., Ste C
Oviedo, FL 32765
https://www.simblocks.io/
Chair, SISO CIGI PSG<https://www.sisostandards.org/>
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Good afternoon, I would like to request that a new feature be added to GDAL=
. Our team has found that while both libzip and GDAL support Zstd compressi=
on, the support does not extend to loading vrt files within a Zstd-compress=
ed zip. We have a use case where
the vsizip file handler is used on a Zstd-compressed zip, such as</div>
<div class=3D"elementToProof" style=3D"font-family: Aptos, Aptos_EmbeddedFo=
nt, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; c=
olor: rgb(0, 0, 0);">
<b>ogr2ogr outputTest.gpkg /vsizip/{<zip_filename>}/extent.geojson</b=
>.</div>
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nt, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; c=
olor: rgb(0, 0, 0);">
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nt, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; c=
olor: rgb(0, 0, 0);">
We believe the following files would require modification to support this f=
eature:</div>
<div class=3D"elementToProof" style=3D"font-family: Aptos, Aptos_EmbeddedFo=
nt, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; c=
olor: rgb(0, 0, 0);">
port/cpl_minizip_unzip.cpp</div>
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nt, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; c=
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port/cpl_vsil_gzip.cpp</div>
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n-bottom: 0px;">
<span style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-siz=
e: 12pt; color: rgb(0, 0, 0);">Jordan Dauble</span></p>
<p class=3D"elementToProof" style=3D"direction: ltr; margin-top: 0px; margi=
n-bottom: 0px;">
<span style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-siz=
e: 12pt; color: rgb(0, 0, 0);">SimBlocks LLC, Founder & CEO</span></p>
<p class=3D"elementToProof" style=3D"direction: ltr; margin-top: 0px; margi=
n-bottom: 0px;">
<span style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-siz=
e: 12pt; color: rgb(0, 0, 0);">407-641-5218<br>
</span></p>
<p class=3D"elementToProof" style=3D"direction: ltr; margin-top: 0px; margi=
n-bottom: 0px;">
<span style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-siz=
e: 12pt; color: rgb(0, 0, 0);">253 Plaza Dr., Ste C<br>
Oviedo, FL 32765</span></p>
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n-bottom: 0px;">
<span style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-siz=
e: 12pt; color: rgb(0, 0, 0);"><a href=3D"https://www.simblocks.io/" style=
=3D"margin-top: 0px; margin-bottom: 0px;">https://www.simblocks.io/</a></sp=
an></p>
<p class=3D"elementToProof" style=3D"direction: ltr; margin-top: 0px; margi=
n-bottom: 0px;">
<span style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-siz=
e: 12pt; color: rgb(0, 0, 0);">Chair,
<a href=3D"https://www.sisostandards.org/" title=3D"https://www.sisostandar=
ds.org/" style=3D"margin-top: 0px; margin-bottom: 0px;">
SISO CIGI PSG</a></span></p>
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