* read PDF metadata from other file
@ 2021-09-11 12:35 Pablo Rodriguez via ntg-context
2021-09-11 16:16 ` Hans Hagen via ntg-context
0 siblings, 1 reply; 3+ messages in thread
From: Pablo Rodriguez via ntg-context @ 2021-09-11 12:35 UTC (permalink / raw)
To: mailing list for ConTeXt users; +Cc: Pablo Rodriguez
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
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___________________________________________________________________________________
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: read PDF metadata from other file
2021-09-11 12:35 read PDF metadata from other file Pablo Rodriguez via ntg-context
@ 2021-09-11 16:16 ` Hans Hagen via ntg-context
2021-09-11 18:54 ` Pablo Rodriguez via ntg-context
0 siblings, 1 reply; 3+ messages in thread
From: Hans Hagen via ntg-context @ 2021-09-11 16:16 UTC (permalink / raw)
To: mailing list for ConTeXt users; +Cc: Hans Hagen, Pablo Rodriguez
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
-----------------------------------------------------------------
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://context.aanhet.net
archive : https://bitbucket.org/phg/context-mirror/commits/
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___________________________________________________________________________________
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: read PDF metadata from other file
2021-09-11 16:16 ` Hans Hagen via ntg-context
@ 2021-09-11 18:54 ` Pablo Rodriguez via ntg-context
0 siblings, 0 replies; 3+ messages in thread
From: Pablo Rodriguez via ntg-context @ 2021-09-11 18:54 UTC (permalink / raw)
To: Hans Hagen via ntg-context; +Cc: Pablo Rodriguez
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_other_PDF_documents.
Many thanks for your help,
Pablo
--
http://www.ousia.tk
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://context.aanhet.net
archive : https://bitbucket.org/phg/context-mirror/commits/
wiki : http://contextgarden.net
___________________________________________________________________________________
^ permalink raw reply [flat|nested] 3+ messages in thread
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