The drivers available will depend on the installation of GDAL/OGR, and can vary; the st_drivers()
function shows which are available, and which may be written (but all are assumed to be readable). Note that stray
files in data source directories (such as *.dbf) may lead to spurious errors that accompanying *.shp are missing.
field vsi
refers to the driver's capability to read/create datasets through the VSI*L API.