[gdal-dev] UTF-8 String Support in GDALOpen() and OGRSFDriverRegistrar::Open()

Chaitanya kumar CH chaitanya.ch at gmail.com
Mon Aug 31 13:19:22 EDT 2009


I tested this with
GDALOpen() function is called at

Check if the gdal utility programs work with your data. Use ogrinfo on the
offending mapinfo file and gdalinfo on the geotiff file. This can narrow
down the search.

On Mon, Aug 31, 2009 at 10:21 PM, Lodewijk Pool <louis.pool at gmail.com>wrote:

> Hi Chaitanya,
> I appreciate you taking the time to check. The TAB extension is MapInfo's
> vector file format. The odd thing is that I did exactly the same test as you
> did, I renamed a GeoTiff file to the offending filename and tried the normal
> Raster Driver and got the same problem. Still, as far as you aware these
> functions should support UTF-8 encoded strings?  There could possibly be a
> peculiarity in the way I pack UTF-8 strings, though I am reasonably certain
> that they are encoded correctly.
> Could you perhaps send me the code snippet you used to test the
> functionality (the part where you pass the string to GDALOpen). Do you think
> there is a chance that my compiled version may differ from your own, i.e. is
> it possible that I compiled a version of GDAL without UTF support?
> Best Regards,
> Louis.
> On Mon, Aug 31, 2009 at 6:35 PM, Chaitanya kumar CH <chaitanya.ch@
> gmail.com> wrote:
>> Louis,
>> I couldn't reproduce the problem on my WinXP-32 system with vc8 with
>> locale set to uk english. However, I used the filename on a GeoTiff file. I
>> couldn't identify the .TAB extension. I am not sure that is a problem.
>> Some of the drivers may not handle non-ascii data but file names should
>> not be a problem.
>> If you don't find any problem at your application side, submit a bug
>> report at http://trac.osgeo.org/gdal/
>> On Mon, Aug 31, 2009 at 8:02 PM, Lodewijk Pool <louis.pool at gmail.com>wrote:
>>> Hi Chaitanya,
>>> Yes, this is using the C/C++ API, the functions I am using are declared
>>> in *gdal.h* and *ogrsf_frmts.h* respectively. I am using WinXP 32bit (UK
>>> English locale) and a version of GDAL 1.6.2 that I compiled for Win32 using
>>> the supplied nmake script files for VC8. The specific filename that is
>>> causing me problems is this one; *"découpage_geographique.TAB"*. If I
>>> remove the 'é' character in that string and replace it with a normal 'e' the
>>> file opens without any problems.
>>> Any help would be appreciated.
>>> Best Regards,
>>> Louis.
>>> On Mon, Aug 31, 2009 at 4:10 PM, Chaitanya kumar CH <chaitanya.ch@
>>> gmail.com> wrote:
>>>> Louis,
>>>> GDAL/OGR usually supports utf-8 encoding. I just don't know where it
>>>> doesn't support.
>>>> Can you provide the details of the OS you are working on? Also, some
>>>> sample file names that caused you problems will come handy.
>>>> I presume you are working in C/C++.
>>>> On Mon, Aug 31, 2009 at 6:37 PM, Lodewijk Pool <louis.pool at gmail.com>wrote:
>>>>> Hi All,
>>>>> I'm having problems opening Raster and Vector Datasources that have
>>>>> filenames and paths with special characters. I'm using GDALOpen for Raster
>>>>> sources and OGRSFDriverRegistrar::Open() for Vector sources, the strings I
>>>>> pass for the filenames are UTF-8 encoded. Does anyone know whether these
>>>>> functions support UTF-8 encoding, and if not, whether there are any other
>>>>> API entry points that do support UTF-8 and/or UTF-16?
>>>>> Thank you in advance,
>>>>> Louis.
>>>>>  _______________________________________________
>>>>> gdal-dev mailing list
>>>>> gdal-dev at lists.osgeo.org
>>>>> http://lists.osgeo.org/mailman/listinfo/gdal-dev
>>>> Best regards,
>>>> --
>>>> Chaitanya kumar CH.
>> Best regards,
>> --
>> Chaitanya kumar CH.
Best regards,
Chaitanya kumar CH.
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