Re: [NTG-context] OT: Pdf info
On 07/20/11 13:21, Procházka Lukáš Ing. - Pontex s. r. o. wrote:
Hello,
this question in not straightly related to Context, but Context users
may have solved it and Ctx may be used to solve it.
I would need to get the following information from .pdf file(s):
- number of pages,
- common width and height of pages (provided that they are the same;
otherwise the dimension can be e.g. zero).
There is the macro \getfiguredimensions which, amongst other things,
sets up \noffigurepages, \figurewidth, and \figureheight.
Here is an excerpt from a macro I have been using since 'forever':
\newcount\imgcount % to store the number of pages
\unexpanded\def\addimage#1{%
\getfiguredimensions[#1.pdf]%
\imgcount=\noffigurepages\relax
\dorecurse
{\the\imgcount}
{\getfiguredimensions[#1.pdf][page=\recurselevel]%
\ifdim\figurewidth\figureheight
...
\fi }}
Best wishes,
Taco
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Re: [NTG-context] OT: Pdf info
2011/7/20 Procházka Lukáš Ing. - Pontex s. r. o. l...@pontex.cz: Hello, this question in not straightly related to Context, but Context users may have solved it and Ctx may be used to solve it. I would need to get the following information from .pdf file(s): - number of pages, - common width and height of pages (provided that they are the same; otherwise the dimension can be e.g. zero). The final goal is to use Ctx as a .pdf joining engine - to provide this, I need to know whether the .pdf to be inserted is portrait or landscape oriented, what is its size (so if to be scaled or not) etc. So Lua inside Ctx may be used to get the required .pdf info, if necessary. If an external program was used, it should be non-interactive (command-line oriented), free and working under Windows. Does anyone have any experience with such a task? You can use some macros (see Taco), and for external programs google for mupdf and xpdf Tthe lua pdf library with mkiv should be also useful, but I've still to play with it. -- luigi ___ 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://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] OT: Pdf info
2011/7/20 Procházka Lukáš Ing. - Pontex s. r. o. l...@pontex.cz: Hello, this question in not straightly related to Context, but Context users may have solved it and Ctx may be used to solve it. I would need to get the following information from .pdf file(s): - number of pages, - common width and height of pages (provided that they are the same; otherwise the dimension can be e.g. zero). The final goal is to use Ctx as a .pdf joining engine - to provide this, I need to know whether the .pdf to be inserted is portrait or landscape oriented, what is its size (so if to be scaled or not) etc. So Lua inside Ctx may be used to get the required .pdf info, if necessary. If an external program was used, it should be non-interactive (command-line oriented), free and working under Windows. Does anyone have any experience with such a task? You can use some macros (see Taco), and for external programs google for mupdf and xpdf Tthe lua pdf library with mkiv should be also useful, but I've still to play with it. luatex's epdf library (= poppler Lua bindings, maybe that's what Luigi meant) allows to extract all this info from a pdf file, with a bit of Lua programming. Regards, Hartmut -- Empfehlen Sie GMX DSL Ihren Freunden und Bekannten und wir belohnen Sie mit bis zu 50,- Euro! https://freundschaftswerbung.gmx.de ___ 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://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] OT: Pdf info
On Wed, Jul 20, 2011 at 2:02 PM, Hartmut Henkel hartmut_hen...@gmx.de wrote: luatex's epdf library (= poppler Lua bindings, maybe that's what Luigi meant) allows to extract all this info from a pdf file, with a bit of Lua programming. Yes, I meant the epdf library. -- luigi ___ 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://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] OT: Pdf info
On Wed, 20 Jul 2011 14:02:00 +0200, Hartmut Henkel hartmut_hen...@gmx.de wrote: The lua pdf library with mkiv should be also useful, but I've still to play with it. luatex's epdf library (= poppler Lua bindings, maybe that's what Luigi meant) allows to extract all this info from a pdf file, with a bit of Lua programming. Regards, Hartmut Hello, would you provide a minimal example - if it is possible in the Ctx or Lua scope? Something like: \startluacode local info = SOMETHING.getInfo(File.pdf) local n = info.numPages local w = info.width local h = info.height \stopluacode Best regards, Lukas ___ 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://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] OT: Pdf info
On 20-7-2011 2:02, Hartmut Henkel wrote:
2011/7/20 Procházka Lukáš Ing. - Pontex s. r. o.l...@pontex.cz:
Hello,
this question in not straightly related to Context, but Context users
may
have solved it and Ctx may be used to solve it.
I would need to get the following information from .pdf file(s):
- number of pages,
- common width and height of pages (provided that they are the same;
otherwise the dimension can be e.g. zero).
The final goal is to use Ctx as a .pdf joining engine - to provide this,
I
need to know whether the .pdf to be inserted is portrait or landscape
oriented, what is its size (so if to be scaled or not) etc.
So Lua inside Ctx may be used to get the required .pdf info, if
necessary.
If an external program was used, it should be non-interactive
(command-line
oriented), free and working under Windows.
Does anyone have any experience with such a task?
You can use some macros (see Taco), and for external programs
google for mupdf and xpdf
Tthe lua pdf library with mkiv should be also useful, but I've still
to play with it.
luatex's epdf library (= poppler Lua bindings, maybe that's what Luigi meant)
allows to extract all this info from a pdf file, with a bit of Lua programming.
indeed (although we still need to fill in some gaps)
anyhow:
local MyDocument = lpdf.epdf.load(sometext.pdf)
context.starttext()
local pages= MyDocument.pages
local dummy= MyDocument.pages[1] -- we need lua 5.2 in order to
avoid this
local nofpages = #MyDocument.pages
context.starttabulate { |c|c|c| }
context.NC() context(page)
context.NC() context(width)
context.NC() context(height) context.NR()
for i=1, nofpages do
local page = pages[i]
local bbox = page.CropBox or page.MediaBox
context.NC() context(i)
context.NC() context(bbox[4]-bbox[2])
context.NC() context(bbox[3]-bbox[1]) context.NR()
end
context.stoptabulate()
context.stoptext()
-
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
| www.pragma-pod.nl
-
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Re: [NTG-context] OT: Pdf info (solved)
Hello, On Wed, 20 Jul 2011 13:29:35 +0200, luigi scarso luigi.sca...@gmail.com wrote: You can use some macros (see Taco), and for external programs google for mupdf and xpdf I installed Xpdf for Windows - http://gnuwin32.sourceforge.net/packages/xpdf.htm - and pdfinfo.exe does the job: C:\Programs.Con\Gnu4Win\XPdf\binpdfinfo c:\Lukas\Jobs\Drachov.PDPS\SO_126\Texts\TZ#.pdf Creator:pdftk 1.41 - www.pdftk.com Producer: itext-paulo-155 (itextpdf.sf.net-lowagie.com) CreationDate: 05/18/11 17:15:13 ModDate:05/18/11 17:15:13 Tagged: no Pages: 8 Encrypted: no Page size: 595 x 842 pts (A4) File size: 119898 bytes Optimized: no PDF version:1.4 Thanks all for their help. Best regards, Lukas -- Ing. Lukáš Procházka [mailto:l...@pontex.cz] Pontex s. r. o. [mailto:pon...@pontex.cz] [http://www.pontex.cz] Bezová 1658 147 14 Praha 4 Tel: +420 244 062 238 Fax: +420 244 461 038 ___ 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://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] OT: Pdf info
local MyDocument = lpdf.epdf.load(sometext.pdf)
context.starttext()
local pages= MyDocument.pages
local dummy= MyDocument.pages[1] -- we need lua 5.2 in order to
avoid this
local nofpages = #MyDocument.pages
context.starttabulate { |c|c|c| }
context.NC() context(page)
context.NC() context(width)
context.NC() context(height) context.NR()
for i=1, nofpages do
local page = pages[i]
local bbox = page.CropBox or page.MediaBox
context.NC() context(i)
context.NC() context(bbox[4]-bbox[2])
context.NC() context(bbox[3]-bbox[1]) context.NR()
end
context.stoptabulate()
context.stoptext()
This code works perfectly, thank you Hans!
Best regards,
Lukas
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