[hdf-forum] Unicode filenames on Windows?

[Francesc Alted]

A Wednesday 03 June 2009 05:26:25 Andrew Collette escrigué:
> Hello,
>
> Does anyone know how to open or create an HDF5 file on Windows with a
> Unicode name?  From what I've been able to determine, it looks like
> it's possible to use file names which contain bytes > 127, and
> interpret them according to locale settings.  However, there doesn't
> seem to be any mechanism for generic (multi-byte) Unicode file names
> like those supported by NTFS.  Is this possible in HDF5?

I don't know for sure how to do that in pure C, but if you are using Python 
(and I think that's the case), you can encode the file name using the 
underlying filesystem encoding.  The next function:

def encode_filename(filename):
  """Return the encoded filename in the filesystem encoding."""
  if type(filename) is unicode:
    encoding = sys.getfilesystemencoding()
    encname = filename.encode(encoding)
  else:
    encname = filename
  return encname

works well on every filesystem that I've tested (including NTFS).

Once you've got the encode file name, it is just a matter to pass it to the 
relevant HDF5 function (H5Fcreate/H5Fopen).

Hope that helps,

-- 
Francesc Alted

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