[Qgis-developer] zip&http?

[Even Rouault]

> I wasn't aware that the gdal api could be used to read zip (and other
> compressed files such as .gz .tar.gz .tar), I was under the impression
> that much functionality (such as getting a zipfile listing) was hidden
> under the hood , in files like cpl_vsil_gzip.cpp but not in the API.
> 
> I may have not looked closely enough, but that is why I used quazip,
> instead of copying bits and pieces of the gdal vsi functions to qgis.
> 
> Reading again VSIReadDir() and VSIStatL() there is no mention that
> VSIReadDir() can handle anything other than directories - can you pass
> it a zip file with proper syntax (/vsizip/file.zip) ?
> http://www.gdal.org/cpl__vsi_8h.html#a6158d73485d6cf92c75b38e7f26d00c3

Etienne,

yes, the doc is certainly a bit lacking. But /vsizip/file.zip is considered as 
a directory from the point of view of the VSI*L API. So you can do most 
operations that apply to regular directories. If file.zip contains a directory 
foo, you can address it with /vsizip/file.zip/foo, etc etc...

> 
> thanks
> Etienne
> 
> >> Etienne
> >> 
> >> On Mon, May 7, 2012 at 4:57 AM, Paolo Cavallini <cavallini at faunalia.it>
> >> 
> >> wrote:
> >> > Merci Etienne for the zip support.
> >> > Any plan to support also http and zip over http?
> >> > http://trac.osgeo.org/gdal/wiki/UserDocs/ReadInZip
> >> > *That* would be very cool.
> >> > All the best.
> >> > 
> >> > --
> >> > Paolo Cavallini
> >> > See: http://www.faunalia.it/pc
> >> > 
> >> > _______________________________________________
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> >> > Qgis-developer at lists.osgeo.org
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> >> 
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