startMPpage..stopMPpage written to a separate PDF?

startMPpage..stopMPpage written to a separate PDF?

[Gerben Wierda]

I have a series of startMPpage—stopMPpage pairs (with MP code inbetween). These now become separate pages in a single PDF. But I need them to become separate PDF’s each during my ConTeXt run, with a name of my own choosing. Is this possible? I guess this will be problematic, but one can hope (maybe some very low level TeX trickery)...

Thanks,

G
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Re: startMPpage..stopMPpage written to a separate PDF?

[Hans Hagen]

On 4/5/2020 12:29 AM, Gerben Wierda wrote:
> I have a series of startMPpage—stopMPpage pairs (with MP code inbetween). These now become separate pages in a single PDF. But I need them to become separate PDF’s each during my ConTeXt run, with a name of my own choosing. Is this possible? I guess this will be problematic, but one can hope (maybe some very low level TeX trickery)...
no (i would probably cook up something but it's not worth the trouble 
and it would add lots of ugly code deep down) but you can use for 
instance mutool etc to split pdf's

Hans

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                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
        tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
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Re: startMPpage..stopMPpage written to a separate PDF?

[Gerben Wierda]

> On 5 Apr 2020, at 11:34, Hans Hagen <j.hagen@xs4all.nl> wrote:
> 
> On 4/5/2020 12:29 AM, Gerben Wierda wrote:
>> I have a series of startMPpage—stopMPpage pairs (with MP code inbetween). These now become separate pages in a single PDF. But I need them to become separate PDF’s each during my ConTeXt run, with a name of my own choosing. Is this possible? I guess this will be problematic, but one can hope (maybe some very low level TeX trickery)...
> no (i would probably cook up something but it's not worth the trouble and it would add lots of ugly code deep down) but

Yes, I was thinking about some low level open/writeout stuff in TeX but was scared to try.

Still, a \startMPfile{pdffilename}..\stopMPfile (instead of page) would have been great...

> you can use for instance mutool etc to split pdf’s

I can’t do that simply because it would mean lots and lots of manual work (including typing long names every time) each time I automatically produce the PDFs. I am talking hundreds of views generated anew every time and they all need to end up in a separate file. I need some sort of automatic flow. It’s OK if the PDF with all the pages is an intermediate and use a tool to split this into separate files with separate file names (so an additional step in the workflow) but I would have to create th eextraction script automatically during the ConTeXt run. 

Alternatively, I could have a step before this to turn the input XML into many separate XMLs and have many ConTeXt runs. Probably that is the best way to do it. Each generated XML would have all of the original XML except it would only have one ‘view’ in it and the rest removed.

> 
> 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
> -----------------------------------------------------------------

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Re: startMPpage..stopMPpage written to a separate PDF?

[Taco Hoekwater]

> On 5 Apr 2020, at 12:27, Gerben Wierda <Gerben.Wierda@rna.nl> wrote:
> 
> Alternatively, I could have a step before this to turn the input XML into many separate XMLs and have many ConTeXt runs. Probably that is the best way to do it. Each generated XML would have all of the original XML except it would only have one ‘view’ in it and the rest removed.

Or you could write out a shell script while processing the run. 

function moduledata.archimate(filename)
  local root = xml.load(filename)
  warnIfVerbose( "Processing %s", filename)
  local shfile = io.open(tex.jobname.. ".sh", "w")
  local i = 1
  for view in xml.collected(root,"diagrams/view") do
    local viewName = xml.text(view,"/name")
    shfile:write(string.format('mutool merge -o "%s.pdf" %s "%s.pdf" ', viewName, i, tex.jobname))
    i = i + 1
    ….
  end
  shfile:close()

and process that shell script at the end of the run.


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Re: startMPpage..stopMPpage written to a separate PDF?

[Wolfgang Schuster]

Gerben Wierda schrieb am 05.04.2020 um 12:27:
> 
> 
>> On 5 Apr 2020, at 11:34, Hans Hagen <j.hagen@xs4all.nl> wrote:
>>
>> On 4/5/2020 12:29 AM, Gerben Wierda wrote:
>>> I have a series of startMPpage—stopMPpage pairs (with MP code inbetween). These now become separate pages in a single PDF. But I need them to become separate PDF’s each during my ConTeXt run, with a name of my own choosing. Is this possible? I guess this will be problematic, but one can hope (maybe some very low level TeX trickery)...
>> no (i would probably cook up something but it's not worth the trouble and it would add lots of ugly code deep down) but
> 
> Yes, I was thinking about some low level open/writeout stuff in TeX but was scared to try.
> 
> Still, a \startMPfile{pdffilename}..\stopMPfile (instead of page) would have been great...

Something like this:

\starttext

\startbuffer[square]
     \startMPpage
         draw fullsquare scaled 10 withcolor red ;
     \stopMPpage
\stopbuffer

\typesetbufferonly[square]

\startbuffer[circle]
     \startMPpage
         draw fullcircle scaled 10 withcolor green ;
     \stopMPpage
\stopbuffer

\typesetbuffer[circle]

\startbuffer[triangle]
     \startMPpage
         draw fulltriangle scaled 10 withcolor blue ;
     \stopMPpage
\stopbuffer

\savebuffer[list=triangle,prefix=no,file=triangle.tex]

\typesetfile[triangle.tex][]

\stoptext

Wolfgang
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