read PDF metadata from other file
Dear list, I have the following sample: \starttext \setupinteraction [state=start, title={\cldcontext{pdfe.open("b.pdf").Info.Title}}] \null \stoptext From a document composed with \insertpages, I need to transfer medatada. But I get the raw value "feff0061" (which I guess it may be introduced by lpdf.pdfunicode). How can I get the pure text value, so I can transfer metadata from one PDF document into another PDF document? Many thanks for your help, Pablo -- http://www.ousia.tk
On 9/11/2021 2:35 PM, Pablo Rodriguez via ntg-context wrote:
Dear list,
I have the following sample:
\starttext \setupinteraction [state=start, title={\cldcontext{pdfe.open("b.pdf").Info.Title}}] \null \stoptext
From a document composed with \insertpages, I need to transfer medatada.
But I get the raw value "feff0061" (which I guess it may be introduced by lpdf.pdfunicode).
How can I get the pure text value, so I can transfer metadata from one PDF document into another PDF document? just use the better interface
\starttext \startluacode function document.whatever(name) local p = lpdf.epdf.load(name) context(p.Info.Title) lpdf.epdf.unload(p) end \stopluacode and/or use the converter (but still you need to close the file) \setupinteraction [state=start, % title=\cldcontext{lpdf.fromsixteen(pdfe.open("b.pdf").Info.Title)}, title={\ctxlua{document.whatever("b.pdf")}}] %\cldcontext{lpdf.fromsixteen(pdfe.open("b.pdf").Info.Title)} \ctxlua{document.whatever("b.pdf")} \stoptext after which you enter wiki mode Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl -----------------------------------------------------------------
On 9/11/21 6:16 PM, Hans Hagen via ntg-context wrote:
On 9/11/2021 2:35 PM, Pablo Rodriguez via ntg-context wrote:
[...] How can I get the pure text value, so I can transfer metadata from one PDF document into another PDF document? just use the better interface [...] after which you enter wiki mode
Mamy thanks for your reply, Hans. I think this might be simpler for me: \starttext \startluacode function document.transfer_metadata(name) local main_doc = lpdf.epdf.load(name) lpdf.addtocatalog("Lang", lpdf.string(main_doc.Catalog.Lang)) lpdf.addtoinfo("Title", lpdf.unicode(main_doc.Info.Title)) lpdf.addtoinfo("Subject", lpdf.unicode(main_doc.Info.Subject)) lpdf.addtoinfo("Author", lpdf.unicode(main_doc.Info.Author)) lpdf.epdf.unload(name) end \stopluacode \unexpanded\def\TransferMetadata#1% {\ctxlua{document.transfer_metadata("#1")}} \null \TransferMetadata{name.pdf} \stoptext Added to https://wiki.contextgarden.net/Interaction#Import_PDF_metadata_fields_from_o.... Many thanks for your help, Pablo -- http://www.ousia.tk
participants (2)
-
Hans Hagen -
Pablo Rodriguez