Re: Support of -translation-table option

[Thomas Schmitt]

Hi,

Jiří K. wrote:
> The -translation-table option is passed here
> https://pagure.io/pungi/blob/master/f/pungi/wrappers/iso.py#_182

Hm. That should be ignored.

  $ xorrisofs -o /dev/null -T x
  ...
  xorriso : NOTE : -as genisofs: Ignored option '-T'
  ...
  Writing to 'stdio:/dev/null' completed successfully.

  $ xorrisofs -o /dev/null -translation-table x
  ...
  xorriso : FAILURE : -as genisofs: Unsupported option '-translation-table'
  xorriso : NOTE : -return_with SORRY 32 triggered by problem severity FAILURE
  $

I will add -translation-table to the list of ignored mkisofs options.
(It appears in genisoimgae -help but not in man genisoimage.)

-----------------------------------------------------------------------

The format is fewly documented. An experiment with genisoimage yields
for block device file "sr0" and regular file "xx":

  $ od -t x1 -t c /mnt/iso/trans.tbl
  0000000  42  20  53  52  30  2e  3b  31  20  20  20  20  20  20  20  20
            B       S   R   0   .   ;   1
  0000020  20  20  20  20  20  20  20  20  20  20  20  20  20  20  20  20

  *
  0000320  20  20  09  73  72  30  09  31  31  20  30  0a  46  20  58  58
                   \t   s   r   0  \t   1   1       0  \n   F       X   X
  0000340  2e  3b  31  20  20  20  20  20  20  20  20  20  20  20  20  20
            .   ;   1
  0000360  20  20  20  20  20  20  20  20  20  20  20  20  20  20  20  20

  *
  0000640  20  20  20  20  20  20  20  20  20  20  20  20  20  20  09  78
                                                                   \t   x
  0000660  78  0a
            x  \n

It looks like TAB is the field separator and trailing blanks of the name
are to be ignored. The line begins with a type character. Then ISO 9660
name and lokal disk name. There is an optional fields for the major and
minor device number.

So if it ever matters, it would be quite easy to generate the tables
in the source directory tree before xorrisofs is run.


Have a nice day :)

Thomas