On Wed, Jul 20, 2011 at 2:02 PM, Hartmut Henkel 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

On 20-7-2011 2:02, Hartmut Henkel wrote:

...

2011/7/20 Procházka Lukáš Ing. - Pontex s. r. o.:

...

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 -----------------------------------------------------------------

Hello, On Wed, 20 Jul 2011 13:29:35 +0200, luigi scarso 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\bin>pdfinfo 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:LPr@pontex.cz] Pontex s. r. o. [mailto:pontex@pontex.cz] [http://www.pontex.cz] Bezová 1658 147 14 Praha 4 Tel: +420 244 062 238 Fax: +420 244 461 038