This isn't the first I've heard of wanting to model PDF with a DFDL schemas, but
as far as I'm aware it hasn't been done.
I'm also not sure if this is true, but I feel like I've heard that PDF format
uses byte offsets, which isn't supported by the current version of DFDL. There
are proposed extensions to support it, but Daffodil does not implement them
(yet). So it might not even be possible with current DFDL if those are required.
There are a number of publicly available schemas here:
https://github.com/orgs/DFDLSchemas/repositories?type=all
Though I'm not sure any of them are as complicated as PDF.
On 2024-08-08 10:48 AM, John Dziurlaj wrote:
Hello,
Long time listener, first time caller.
I am looking to implement the XFA Format <https://en.wikipedia.org/wiki/XFA>,
for which PDF is one of its “wrappers”. In order to inject XFA (which is XML)
into PDF (which is binary), the native XML toolchain won’t suffice. Has anyone
attempted a DFDL schema for PDF? Are there any schemas available for it for a
similarly complex format?
Thanks!
John Dziurłaj /d͡ʑurwaj/
Sr. Solutions Architect, The Turnout
e: john@turnout.rocks <mailto:john@turnout.rocks>
s: +1 (330) 714-8935
x: @dziurlaj
work hours: 7am-3pm ET
http://turnout.rocks <http://turnout.rocks/>
@turnoutrocks
