* issue importing metadata from PDF
@ 2021-11-12 17:53 Pablo Rodriguez via ntg-context
2021-11-12 18:14 ` Hans Hagen via ntg-context
0 siblings, 1 reply; 5+ messages in thread
From: Pablo Rodriguez via ntg-context @ 2021-11-12 17:53 UTC (permalink / raw)
To: mailing list for ConTeXt users; +Cc: Pablo Rodriguez
Hans,
I have a PDF document (which I didn’t generate) and it contains the
following objects:
1 0 obj
<<
/Title 272 0 R
/Producer 273 0 R
/Creator 274 0 R
/CreationDate 275 0 R
/ModDate 275 0 R
>>
endobj
272 0 obj
(This is an important title)
endobj
273 0 obj
(Mac OS X 10.12.1 Quartz PDFContext)
endobj
274 0 obj
(Keynote)
endobj
275 0 obj
(D:20161108071428Z00'00')
endobj
I cannot import these objects, since they are tables instead of strings,
after checking that with:
\startluacode
function document.transfer_metadata(name)
local main_doc = lpdf.epdf.load(name)
context(type(main_doc.Info.ModDate))
context(type(main_doc.Info.Title))
end
\stopluacode
Would it be possible that LMTX can deal with these objects and import
them as strings?
Many thanks for your help,
Pablo
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___________________________________________________________________________________
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: issue importing metadata from PDF
2021-11-12 17:53 issue importing metadata from PDF Pablo Rodriguez via ntg-context
@ 2021-11-12 18:14 ` Hans Hagen via ntg-context
2021-11-12 18:24 ` Pablo Rodriguez via ntg-context
0 siblings, 1 reply; 5+ messages in thread
From: Hans Hagen via ntg-context @ 2021-11-12 18:14 UTC (permalink / raw)
To: Pablo Rodriguez via ntg-context; +Cc: Hans Hagen
On 11/12/2021 6:53 PM, Pablo Rodriguez via ntg-context wrote:
> Hans,
>
> I have a PDF document (which I didn’t generate) and it contains the
> following objects:
>
> 1 0 obj
> <<
> /Title 272 0 R
> /Producer 273 0 R
> /Creator 274 0 R
> /CreationDate 275 0 R
> /ModDate 275 0 R
> >>
> endobj
>
> 272 0 obj
> (This is an important title)
> endobj
>
> 273 0 obj
> (Mac OS X 10.12.1 Quartz PDFContext)
> endobj
>
> 274 0 obj
> (Keynote)
> endobj
>
> 275 0 obj
> (D:20161108071428Z00'00')
> endobj
>
> I cannot import these objects, since they are tables instead of strings,
> after checking that with:
>
> \startluacode
> function document.transfer_metadata(name)
> local main_doc = lpdf.epdf.load(name)
> context(type(main_doc.Info.ModDate))
> context(type(main_doc.Info.Title))
> end
> \stopluacode
>
> Would it be possible that LMTX can deal with these objects and import
> them as strings?
They are tables because in lua objects are like tables. Doesn't
context(tostring(main_doc.Info.ModDate))
work?
-----------------------------------------------------------------
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
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archive : https://bitbucket.org/phg/context-mirror/commits/
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___________________________________________________________________________________
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: issue importing metadata from PDF
2021-11-12 18:14 ` Hans Hagen via ntg-context
@ 2021-11-12 18:24 ` Pablo Rodriguez via ntg-context
2021-11-12 19:04 ` Hans Hagen via ntg-context
0 siblings, 1 reply; 5+ messages in thread
From: Pablo Rodriguez via ntg-context @ 2021-11-12 18:24 UTC (permalink / raw)
To: Hans Hagen via ntg-context; +Cc: Pablo Rodriguez
On 11/12/21 7:14 PM, Hans Hagen via ntg-context wrote:
> They are tables because in lua objects are like tables. Doesn't
>
> context(tostring(main_doc.Info.ModDate))
>
> work?
Many thanks for your reply, Hans.
I’m afraid I don’t know how to extract the real information, I only get:
table: 0x324279a3400
BTW, how can I use "\enabledirectives[backend.date=2021.02.01]" in Lua?
Many thanks for your help,
Pablo
___________________________________________________________________________________
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] 5+ messages in thread
* Re: issue importing metadata from PDF
2021-11-12 18:24 ` Pablo Rodriguez via ntg-context
@ 2021-11-12 19:04 ` Hans Hagen via ntg-context
2021-11-12 19:31 ` Pablo Rodriguez via ntg-context
0 siblings, 1 reply; 5+ messages in thread
From: Hans Hagen via ntg-context @ 2021-11-12 19:04 UTC (permalink / raw)
To: mailing list for ConTeXt users; +Cc: Hans Hagen, Pablo Rodriguez
On 11/12/2021 7:24 PM, Pablo Rodriguez via ntg-context wrote:
> On 11/12/21 7:14 PM, Hans Hagen via ntg-context wrote:
>> They are tables because in lua objects are like tables. Doesn't
>>
>> context(tostring(main_doc.Info.ModDate))
>>
>> work?
>
> Many thanks for your reply, Hans.
>
> I’m afraid I don’t know how to extract the real information, I only get:
>
> table: 0x324279a3400
then you're doing something wrong
\startluacode
local main = lpdf.epdf.load("ar.pdf")
context(tostring(main.Info.ModDate))
context(tostring(main.Info.Title))
local crap1 = tostring(main.Info.ModDate)
local crap2 = tostring(main.Info.Title)
context(crap1)
context(crap2)
\stopluacode
works quite okay
> BTW, how can I use "\enabledirectives[backend.date=2021.02.01]" in Lua?
grep is your friend ... (probably also in the cld manual)
directives.enable('backend.date=2021.02.01')
which of course doesn't mean that each one will work out as expected
because timing matters
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/
wiki : http://contextgarden.net
___________________________________________________________________________________
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: issue importing metadata from PDF
2021-11-12 19:04 ` Hans Hagen via ntg-context
@ 2021-11-12 19:31 ` Pablo Rodriguez via ntg-context
0 siblings, 0 replies; 5+ messages in thread
From: Pablo Rodriguez via ntg-context @ 2021-11-12 19:31 UTC (permalink / raw)
To: Hans Hagen via ntg-context; +Cc: Pablo Rodriguez
On 11/12/21 8:04 PM, Hans Hagen via ntg-context wrote:
> On 11/12/2021 7:24 PM, Pablo Rodriguez via ntg-context wrote:
>> [...]
>> I’m afraid I don’t know how to extract the real information, I only
>> get:>>
>> table: 0x324279a3400
>
> then you're doing something wrong
> [...]
> context(tostring(main.Info.ModDate))
> context(tostring(main.Info.Title))
> [...]
> works quite okay
I think there is an issue with the PDF document, because it’s an issue
only with that PDF file I have. I can read the info from other files
pretty well.
I’m going to ask the author whether I may share the PDF document here,
so you can check it.
>> BTW, how can I use "\enabledirectives[backend.date=2021.02.01]" in Lua?
>
> grep is your friend ... (probably also in the cld manual)
>
> directives.enable('backend.date=2021.02.01')
>
> which of course doesn't mean that each one will work out as expected
> because timing matters
Sorry, I found in some document (or I found out it worked):
directives.enable(directives.enable("backend.date", "no")
But I never thought that an equal sign could be the way.
Many thanks for your help,
Pablo
___________________________________________________________________________________
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
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wiki : http://contextgarden.net
___________________________________________________________________________________
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2021-11-12 17:53 issue importing metadata from PDF Pablo Rodriguez via ntg-context
2021-11-12 18:14 ` Hans Hagen via ntg-context
2021-11-12 18:24 ` Pablo Rodriguez via ntg-context
2021-11-12 19:04 ` Hans Hagen via ntg-context
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