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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/