[gdal-dev] Reading shapefile from ZIP archive (c++)

[Daniel Evans]

The documentation page I linked to states that VSIReadDir() can be used,
and gives other details on operations that might be relevant (e.g.
distinguishing files vs. directories).

Daniel

On Tue, 6 Sept 2022 at 16:27, Sharon Eldor <seldor at kinetica.com> wrote:

> Thanks - so is there a way to list the content of the zip file or do I use
> some other tool for that?
>
> On Tue, Sep 6, 2022 at 10:50 AM Daniel Evans <daniel.fred.evans at gmail.com>
> wrote:
>
>> Hi Sharon,
>>
>> I think all you need to do is define the path to open as:
>>
>> '/vsizip//parks-and-recreation-feature-map-d.zip/parks-and-recreation-feature-map/parks-and-recreation-feature-map.shp'
>>
>> i.e. defining the filepath as:
>>
>> /vsizip/<path to the zip>/<path inside the zip>
>>
>> When the zip contains only a single (shape)file at the top level - the case where you've got it working - GDAL automatically determines the file to open.
>>
>> Docs at: https://gdal.org/user/virtual_file_systems.html#vsizip-zip-archives
>>
>> Cheers,
>>
>> Daniel
>>
>>
>> On Tue, 6 Sept 2022 at 15:30, Sharon Eldor <seldor at kinetica.com> wrote:
>>
>>> Hi,
>>> Trying to read shapefiles from a zip archive, I am running:
>>>
>>> GDALDataset::Open('/vsizip//parks-and-recreation-feature-map-d.zip', GDAL_OF_VECTOR |
>>>
>>>                                   GDAL_OF_READONLY | GDAL_OF_VERBOSE_ERROR | GDAL_OF_SHARED,
>>>
>>>                                   NULL, NULL, NULL )
>>>
>>>
>>> When there is a directory in the zip, I get an error:
>>>
>>> Error: `/vsizip//parks-and-recreation-feature-map-d.zip' not recognized as a supported file format.
>>>
>>>
>>> When the files are not under a directory in the zip (same files), the zip file is read with no error.
>>>
>>> Attaching 2 files for example.
>>>
>>> Is there a way to directly read the files from the archive with the directory?
>>>
>>>
>>>
>>> Thanks,
>>>
>>> Sharon
>>>
>>>
>>>
>>>
>>>
>>>
>>>
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