[Gdal-dev] Validation of creation options given to gdal_translate and gdalwarp

[Even Rouault]

I've recently commited in GDAL trunk 
(http://trac.osgeo.org/gdal/changeset/12380, see also 
http://trac.osgeo.org/gdal/ticket/611) some code to validate the creation 
options passed by the user with the -co command line option to the output 
drivers.
GDALValidateCreationOptions only reports warnings and not failures when it 
detects that an option does not match the list of creation options advertized 
by the driver, so this should not break anything.
This new code will probably require some driver mainteners to add missing 
creation options in the creation option list to avoid false warnings.

The option types handled are :
- int/integer
- unsigned int
- float
- boolean
- string
- string-select

Frank Warmerdam outlined that some drivers use private/undocumented creation 
options. Either people using them are OK to live with the new warnings, 
either we must find a way to declare private creation options.

Best regards,
Even.