Hi again,
I’m looking into extending my ConTeXt-made invoices with embedded XML
data according to the DE/FR Factur-X standard (in Germany also known as
ZUGFeRD).
Does anyone have some experience with that?
For that, I need PDF/A-3(a) compliant documents – current documentation
is only on PDF/A-1(a), but that doesn’t seem to be the problem.
Now I’m supposed to put additional information into the XMP metadata.
I found lpdf-xmp.lua; but it seems like I can’t just use
\startluacode
lpdf.addtoinfo("TEST","Hraban was here!")
lpdf.addxmpinfo("UStID","123456")
\stopluacode
Would I need to add my tags to the mapping table of lpdf-xmp.lua?
Or circumvent it after a look at the function concerned:
function lpdf.addxmpinfo(tag,value,check)
local pattern = permitdetail(tag)
if type(pattern) == "string" then
xmlfillin(xmp or valid_xmp(),pattern,value,check)
end
end
If I try to use xml.fillin, I apparently need the name of the current
xml file, but valid_xmp is a local function. If just use the default...
xml.fillin("lpdf-pdx.xml","metadata","UStID","123456")
... at least I find no traces of that key in the extended metadata
dialog of Acrobat Pro 9. I also tried different values like "xmp"
instead of metadata. Clearly I don’t understand what I’m doing here ;)
Is there a check against some schema involved?
It looks like I should include an additional XMP schema for Factur-X
with the URI "urn:factur-x:pdfa:CrossIndustryDocument:invoice:1p0#",
prefix "fx". How can I do that?
This is the example from the docs:
<rdf:Description
rdf:about=""
xmlns:fx="urn:factur-x:pdfa:CrossIndustryDocument:invoice:1p0#">
<fx:DocumentType>INVOICE</fx:DocumentType>
<fx:DocumentFileName>factur-x.xml</fx:DocumentFileName>
<fx:Version>1.0</fx:Version>
<fx:ConformanceLevel>EXTENDED</fx:ConformanceLevel>
</rdf:Description>
Then I’d use \attachment to include my "factur-x.xml" invoice (that I
must generate from my Lua invoice code), but that’s a task for another
day ;)
Hraban
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