Am Fri, 3 Apr 2020 02:08:25 +0200 schrieb Marcel Fabian Krüger:
> Hi,
>
> I recently tried to do something with the embedded pdfe library and
> noticed that accessing strings comes with certain problems. PDF strings
> are always returned in raw form without the surrounding <> or (), so any
> script using them will need to know if it is a hex string or a "normal"
> () delimited string in order to treat it correctly. So pdfe.getstring is
> a bit weird: It gives a Lua string but no indication which type of
> string is returned.
I just run into the same problem and used the detail field from
getfromdictionary/getfromarray to access the string type. But I
agree that it would be nice, if getstring would return this directly
\documentclass{article}
\begin{document}
\directlua{
doc= pdfe.open(kpse.find_file("example-image.pdf"))
trailerid = pdfe.getarray(pdfe.gettrailer (doc),"ID")
type,value,detail = pdfe.getfromarray(trailerid,1)
if detail then
print("HEXSTRING", value)
else
print("LITERALSTRING", value)
end
type,value,detail =
pdfe.getfromdictionary(pdfe.getinfo(doc),"Creator")
if detail then
print("HEXSTRING", value)
else
print("LITERALSTRING", value)
end
}
blub
\end{document}
--
Ulrike Fischer
http://www.troubleshooting-tex.de/
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