Re: PDF/A-3a attachment support query

[Peter Rolf <indiego@gmx.net>]

Hi Rik,

I guess it's not supported yet.

In "lpdf-fmt.lua" it says:
[..]
       ["pdf/a-3a"] = { -- untested; NEW: any type of attachment is allowed
[..]

I remember adding the "a-2a" and "a-3a" versions back when Hans and I
added experimental support for "PDF/UA-1" (which is based on "PDF/A-3a",
but much more limited). This all lies back a few years, can't remember
the details.

So we have only basic support for "PDF/A-3a", the more advanced features
of that format are not supported yet. The main problem here is the
lacking PDF/A documentation (ISO pay wall). I guess there is currently
no real reason to use that format at all (?).


Best wishes,

Peter



Am 06.12.2019 um 03:11 schrieb Rik Kabel:
> Hello list,
>
> The following document fails PDF/A-3a validation. It passes without the
> attachment.
>
>     \setuplanguage       [en]
>     \setuptagging        [state=start]
>     \setupinteraction    [state=start]
>     \setupbackend        [format={pdf/a-3a},profile={default_gray.icc},
>                           intent={ISO coated v2 300\letterpercent\space
>     (ECI)}]
>     \setupstructure      [state=start,method=auto]
>     \setupcolors         [pagecolormodel=auto,start=yes,rgb=no,cmyk=no]
>     \setupbodyfont       [Palatino,10pt]
>     \starttext
>
>       Attaching a plain text file.
>
>     % \attachment        [file=test.tex,
>     %                     type={text/plain;charset=UTF-8}]
>     % The \ConTeXt\ source code for this document is attached here.
>       \attachment        [file=testa.pdf,
>                           type={application/pdf}]
>       A successfully validated pdf/a-3a file is attached here.
>
>     \stoptext
>
> pdf-online <https://www.pdf-online.com/osa/validate.aspx>reports:
>
>     Validating file "test.pdf" for conformance level pdfa-3a
>     The key F is required but missing.
>     The appearance dictionary doesn't contain an entry.
>     File specification 'testa.pdf' not associated with an object.
>     The document does not conform to the requested standard.
>     The document doesn't conform to the PDF reference (missing required
>     entries, wrong value types, etc.).
>     The document contains hidden, invisible, non-viewable or
>     non-printable annotations.
>     The document contains annotations or form fields with ambigous or
>     without appropriate appearances.
>     The document does not conform to the PDF/A-3a standard.
>     Done.
>
> My understanding is that 3-a should support both pdf and non-pdf
> attachments. This fails in a similar manner with both pdf/a-3a-validated
> files and with plain text files. I also tested with verapdf, and it also
> rejected the document with an attachment.
>
> Is this my error, or is it not yet supported?
>
> --
> Rik Kabel
>
>
>
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to the Wiki!
>
> maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
> webpage  : http://www.pragma-ade.nl / http://context.aanhet.net
> archive  : https://bitbucket.org/phg/context-mirror/commits/
> wiki     : http://contextgarden.net
> ___________________________________________________________________________________
>



___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://context.aanhet.net
archive  : https://bitbucket.org/phg/context-mirror/commits/
wiki     : http://contextgarden.net
___________________________________________________________________________________