[Hdf-forum] HDF5 1.8.4 & String attribute with fortran

[Giraudon Cyril]

Elena,


Effectively, I use HL Fortran API to read HDF5 files (not necessarily to
write files).
For the moment I add a

buf(scan(char(0):)) = ""

to clean my strings.


Regards,

Cyril.


Le 16/01/2010 02:43, Elena Pourmal a écrit :
> Cyril,
>
> Are you using HL Fortran APIs? if so, it is a deficiency of the current API. The API is a wrapper around C HL API that uses H5T_S_C1 datatype; fortran wrapper modified user's buffer by adding \0 character (yes, very bad....) We have bug filed and hopefully will resolve it for the 1.8.5 release.
>
> If you are using regular HDF5 Fortran APIs, please send me a program that demonstrates the problem (i.e., your fortran data is modified with trailing \0).
>
> Thank you!
>
> Elena
> On Jan 13, 2010, at 8:45 AM, Giraudon Cyril wrote:
>
>   
>> Hello,
>>
>> I use HDF5 1.8.4  compiled with ifort 11.1 on a linux Ubuntu 9.04 box.
>>
>> If I write a string attribute in fortran, then when I read it the string
>> is terminated with an invisible null character.
>> So it is very difficult to deal with it (concatanation is very
>> hasardeous for instance).
>>
>> Is it a bug or the right behaviour ?
>>
>> Thanks a lot,
>>
>> Cyril.
>>
>>
>>
>> Note :
>> If I write a string attribute in python/pytables, then when I read it
>> the string is NOT  terminated with an invisible null character.
>>
>>
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