repeat a page inside a document

repeat a page inside a document

[Pablo Rodriguez]

Dear list,

I have the following sample:

    \starttext
    \input knuth
    \page[right]
    \setuplayout[page]
        \externalfigure[\jobname.pdf][page=1]
    \stoptext

My question is how to get a page from the document you‘re compiling
repeated inside the same document.

I have tried to search both i-context.pdf and the wiki, but “mirror” and
“repeat” seem to be bad options.

Many thanks in advance,

Pablo
--
http://www.ousia.tk
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___________________________________________________________________________________

Re: repeat a page inside a document

[Henning Hraban Ramm]

> Am 2020-02-06 um 16:28 schrieb Pablo Rodriguez <oinos@gmx.es>:
> 
> My question is how to get a page from the document you‘re compiling
> repeated inside the same document.

I solved this with a component that I include twice. Of course that won’t work if you need a page in the middle of some text flow.


Greetlings, Hraban
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Re: repeat a page inside a document

[Thomas Savary]

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Hi, Pablo !

Funny, I asked the same kind of question in a LaTeX mailing list a few days 
ago. The anwer I was given requires a LaTeX package, but is written in TeX as 
well, so it may be easy to adapt it for ConTeXt. Sorry, I cannot do that 
myself yet. I have just started to learn ConTeXt and am a very busy slow 
learner.

\usepackage{atbegshi}
\newcommand{\Repeat}{<the content you need to be repeatedt>}

\AtBeginShipout{%
	\ifodd\value{page}%
	\else\Repeat%
	\newpage%
	\fi%
}

I hope it helps. But maybe you don’t need to repeat the same page every two 
page, as I did…

Thomas Savary
1 le Grand-Plessis
F-85340 L’Île-d’Olonne
Tél. 06 22 82 61 34
https://correctionpro.fr/
https://compo85.fr/

jeudi 6 février 2020, à 16:28:04 CET, Pablo Rodriguez a écrit :
> Dear list,
> 
> I have the following sample:
> 
>     \starttext
>     \input knuth
>     \page[right]
>     \setuplayout[page]
>         \externalfigure[\jobname.pdf][page=1]
>     \stoptext
> 
> My question is how to get a page from the document you‘re compiling
> repeated inside the same document.
> 
> I have tried to search both i-context.pdf and the wiki, but “mirror” and
> “repeat” seem to be bad options.
> 
> Many thanks in advance,
> 
> 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
> ____________________________________________________________________________
> _______


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___________________________________________________________________________________

Re: repeat a page inside a document

[Pablo Rodriguez]

On 2/6/20 5:15 PM, Henning Hraban Ramm wrote:
>
>> Am 2020-02-06 um 16:28 schrieb Pablo Rodriguez <oinos@gmx.es>:
>>
>> My question is how to get a page from the document you‘re compiling
>> repeated inside the same document.
>
> I solved this with a component that I include twice. Of course that
> won’t work if you need a page in the middle of some text flow.

Many thanks for your reply, Hraban.

I don’t need a page in the middle of the text.

I need a single page document to be printed twice and doublesided.

I’m afraid I’d never used components and I cannot understand how this
would help to replicate the previous page in a document.

BTW, in my real-world document I use layers which are different for
first and other pages.

Could you provide a minimal sample showing how a component may include a
page twice?

Many thanks for your help,

Pablo
--
http://www.ousia.tk
___________________________________________________________________________________
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___________________________________________________________________________________

Re: repeat a page inside a document

[Wolfgang Schuster]

On Thu, 6 Feb 2020 16:28:04 +0100
Pablo Rodriguez <oinos@gmx.es> wrote:

> Dear list,
> 
> I have the following sample:
> 
>     \starttext
>     \input knuth
>     \page[right]
>     \setuplayout[page]
>         \externalfigure[\jobname.pdf][page=1]
>     \stoptext
> 
> My question is how to get a page from the document you‘re compiling
> repeated inside the same document.
> 
> I have tried to search both i-context.pdf and the wiki, but “mirror” and
> “repeat” seem to be bad options.

You can store each finished page in a box and access the content
of the stored box afterwards.

\installshipoutmethod{savepages}
  {\dowithnextbox
     {\invokepagehandler{normal}{\copy\nextbox}%
      \putboxincache{savedpages}{\number\realpageno}\nextbox}
   \hbox}

\setuppaper[method=savepages]

\starttext

\dorecurse{8}
  {\expanded{\chapter{Chapter \recurselevel}}
   \dorecurse{\recurselevel}{\samplefile{weisman}}}

\startlayout[page]
\directboxfromcache{savedpages}{5}
\page
\directboxfromcache{savedpages}{2}
\stoplayout

\stoptext

Wolfgang
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___________________________________________________________________________________

Re: repeat a page inside a document

[Pablo Rodriguez]

On 2/6/20 5:39 PM, Thomas Savary wrote:
> Hi, Pablo !
>
> Funny, I asked the same kind of question in a LaTeX mailing list a few
> days ago. The anwer I was given requires a LaTeX package, but is written
> in TeX as well, so it may be easy to adapt it for ConTeXt. Sorry, I
> cannot do that myself yet. I have just started to learn ConTeXt and am a
> very busy slow learner.
>
> \usepackage{atbegshi}
> \newcommand{\Repeat}{<the content you need to be repeatedt>}
>
> \AtBeginShipout{%
> \ifodd\value{page}%
> \else\Repeat%
> \newpage%
> \fi%

Many thanks for your reply, Thomas.

I don’t think this would work, since I need to impose a full page from
the same document in a new one (without resizing or rotating it).

I mean, from what I see in that approach, I would have a hard time
fitting all page contents with layers inside a single command.

But please, let me know what I may be missing here, if I’m wrong.

Many thanks for your help,

Pablo
--
http://www.ousia.tk
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___________________________________________________________________________________

Re: repeat a page inside a document

[Pablo Rodriguez]

On 2/6/20 7:14 PM, Wolfgang Schuster wrote:
> On Thu, 6 Feb 2020 16:28:04 +0100 Pablo Rodriguez wrote:
>> [...]
>> My question is how to get a page from the document you‘re compiling
>> repeated inside the same document.
>>
>> I have tried to search both i-context.pdf and the wiki, but “mirror” and
>> “repeat” seem to be bad options.
>
> You can store each finished page in a box and access the content
> of the stored box afterwards.

Huge thanks for your reply and the code, Wolfgang.

I have just checked “TeX for the Impatient” to understand what shipout
methods and boxes were. I think I can barely grasp their meaning.

Which are other usages for shipouts and boxes? I guess they are used to
add pages in the final PDF document, but I don’t see which other uses
they may have.

BTW, “invokepagehandler” reads “invokepageheandler” in the following
files from the ConTeXt Suite (I don’t know whether the first is the real
source of the rest of them):

* texmf-context/tex/context/interface/mkiv/i-imposition.xml
* texmf-context/tex/context/interface/mkiv/context-en.xml
*
texmf-context/context/data/vscode/extensions/context/syntaxes/context-syntax-tex.json
*
texmf-context/context/data/textadept/context/data/scite-context-data-interfaces.lua
*
texmf-context/context/data/scite/context/lexers/data/scite-context-data-interfaces.lua
*
texmf-context/context/data/scite/context/scite-context-data-interfaces.properties

Many thanks again for your help,

Pablo


> \installshipoutmethod{savepages}
>   {\dowithnextbox
>      {\invokepagehandler{normal}{\copy\nextbox}%
>       \putboxincache{savedpages}{\number\realpageno}\nextbox}
>    \hbox}
>
> \setuppaper[method=savepages]
>
> \starttext
>
> \dorecurse{8}
>   {\expanded{\chapter{Chapter \recurselevel}}
>    \dorecurse{\recurselevel}{\samplefile{weisman}}}
>
> \startlayout[page]
> \directboxfromcache{savedpages}{5}
> \page
> \directboxfromcache{savedpages}{2}
> \stoplayout
>
> \stoptext

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http://www.ousia.tk
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Re: repeat a page inside a document

[Wolfgang Schuster]

On Thu, 6 Feb 2020 19:02:08 +0100
Pablo Rodriguez <oinos@gmx.es> wrote:

> On 2/6/20 5:15 PM, Henning Hraban Ramm wrote:
> >
> >> Am 2020-02-06 um 16:28 schrieb Pablo Rodriguez <oinos@gmx.es>:
> >>
> >> My question is how to get a page from the document you‘re compiling
> >> repeated inside the same document.
> >
> > I solved this with a component that I include twice. Of course that
> > won’t work if you need a page in the middle of some text flow.
> 
> Many thanks for your reply, Hraban.
> 
> I don’t need a page in the middle of the text.
> 
> I need a single page document to be printed twice and doublesided.
> 
> I’m afraid I’d never used components and I cannot understand how this
> would help to replicate the previous page in a document.
> 
> BTW, in my real-world document I use layers which are different for
> first and other pages.

How many pages has your document, first you write is has only
one page but now you write about a document with many pages.

> Could you provide a minimal sample showing how a component may include a
> page twice?

Can you provide a minimal example of your document because
there is no solution which works for all cases.

Wolfgang
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Re: repeat a page inside a document

[Pablo Rodriguez]

On 2/6/20 8:17 PM, Wolfgang Schuster wrote:
> On Thu, 6 Feb 2020 19:02:08 +0100 Pablo Rodriguez wrote:
>> [...]
>> BTW, in my real-world document I use layers which are different for
>> first and other pages.
>
> How many pages has your document, first you write is has only
> one page but now you write about a document with many pages.

Sorry for the inaccuracies in my previous description, Wolfgang.

I use a single source combined with data read from CSV files to generate
documents which may contain a single or more than one page.

I assumed that modes were persistent across runs. And maybe they aren’t
or my approach is wrong.

>> Could you provide a minimal sample showing how a component may include a
>> page twice?
>
> Can you provide a minimal example of your document because
> there is no solution which works for all cases.

The sample that seems to work is the following (too tricky for my taste
and I have to adapt it to Windows):

    \installshipoutmethod{savepages}
      {\dowithnextbox
         {\invokepagehandler{normal}{\copy\nextbox}%
          \putboxincache{savedpages}{\number\realpageno}\nextbox}
       \hbox}

    \setuppaper[method=savepages]

    \starttext

    \scale[width=\textwidth]{a}
    \scale[width=\textwidth]{b}

    \doifmode{*first}{\executesystemcommand{rm zikaasd.abh}}

    \startnotmode[*first]
      \ifnum\lastpagenumber<2
        \executesystemcommand{touch zikaasd.abh}
        \fi

      \doiffileexistselse{zikaasd.abh}{%
        \startlayout[page]
          \directboxfromcache{savedpages}{1}
        \stoplayout}{}
    \stopnotmode

    \stoptext

I wonder whether there is a better way of doing this.

At least, creating and removing empty files with Lua would be more
portable. And not having to use an external file would be better.

Many thanks for your help,

Pablo
--
http://www.ousia.tk
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Re: repeat a page inside a document

[Wolfgang Schuster]

On Thu, 6 Feb 2020 22:04:47 +0100
Pablo Rodriguez <oinos@gmx.es> wrote:

> On 2/6/20 8:17 PM, Wolfgang Schuster wrote:
> > On Thu, 6 Feb 2020 19:02:08 +0100 Pablo Rodriguez wrote:
> >> [...]
> >> BTW, in my real-world document I use layers which are different for
> >> first and other pages.
> >
> > How many pages has your document, first you write is has only
> > one page but now you write about a document with many pages.
> 
> Sorry for the inaccuracies in my previous description, Wolfgang.
> 
> I use a single source combined with data read from CSV files to generate
> documents which may contain a single or more than one page.
> 
> I assumed that modes were persistent across runs. And maybe they aren’t
> or my approach is wrong.
> 
> >> Could you provide a minimal sample showing how a component may include a
> >> page twice?
> >
> > Can you provide a minimal example of your document because
> > there is no solution which works for all cases.
> 
> The sample that seems to work is the following (too tricky for my taste
> and I have to adapt it to Windows):
> 
>     \installshipoutmethod{savepages}
>       {\dowithnextbox
>          {\invokepagehandler{normal}{\copy\nextbox}%
>           \putboxincache{savedpages}{\number\realpageno}\nextbox}
>        \hbox}
> 
>     \setuppaper[method=savepages]
> 
>     \starttext
> 
>     \scale[width=\textwidth]{a}
>     \scale[width=\textwidth]{b}
> 
>     \doifmode{*first}{\executesystemcommand{rm zikaasd.abh}}
> 
>     \startnotmode[*first]
>       \ifnum\lastpagenumber<2
>         \executesystemcommand{touch zikaasd.abh}
>         \fi
> 
>       \doiffileexistselse{zikaasd.abh}{%
>         \startlayout[page]
>           \directboxfromcache{savedpages}{1}
>         \stoplayout}{}
>     \stopnotmode
> 
>     \stoptext
> 
> I wonder whether there is a better way of doing this.
> 
> At least, creating and removing empty files with Lua would be more
> portable. And not having to use an external file would be better.

Your example is still very confusing and I have no idea
what you're trying to achieve. They way to go depends also
what you try to achieve, when you need an exact copy of
the first page the above is the way to go.

Another way is to use a make file (or a ctx-file for ConTeXt)
to add a image of the first page to your document afterwards.

Wolfgang
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Re: repeat a page inside a document

[Pablo Rodriguez]

On 2/6/20 10:26 PM, Wolfgang Schuster wrote:
> On Thu, 6 Feb 2020 22:04:47 +0100 Pablo Rodriguez wrote:
>> [...]
>> At least, creating and removing empty files with Lua would be more
>> portable. And not having to use an external file would be better.
>
> Your example is still very confusing and I have no idea
> what you're trying to achieve. They way to go depends also
> what you try to achieve, when you need an exact copy of
> the first page the above is the way to go.

Sorry again for the poor explanation, Wolfgang.

I must recognize that I need this as a workaround to avoid crap at work
(and that is all I’m allowed to explain there).

I need an exact copy of the first page in the documents that only
contain a single page. Sorry, I cannot provide a minimal sample (only an
explanation [and I’m not sure it would be minimal]).

What I discovered after my previous message is that both
"\savebuffer[whatever][αβδ.γεζ]" and
"\ctxlua{os.remove([[\jobname]].."-αβδ.γεζ")}" are portable ways of
creating and removing empty files.

> Another way is to use a make file (or a ctx-file for ConTeXt)
> to add a image of the first page to your document afterwards.

I’m not sure I’m getting this: do you mean something similar to
\typesetbuffer?

Many thanks for your help,

Pablo
--
http://www.ousia.tk
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Re: repeat a page inside a document

[context]

[-- Attachment #1: Type: text/plain, Size: 1709 bytes --]

Hello Pablo,

although I'm not sure about what to achieve, should this be helpful for 
you?

Ctx source:

---- Pablo.mkiv
\starttext
   \setupheadertexts[][\cldcontext{"Mode = " .. (tex.modes["1"] and "1" 
or tex.modes["2"] and "2" or "??")}] % Just for debugging

   \input knuth

   \page[right]
   \startmodeset
     [1]
     {%
       \setuplayout[page] foo
     }
     [2]
     {%
       \pagefigure[\jobname_.pdf][page=1]
     }
   \stopmodeset
\stoptext
----

To be compiled in two runs, with this:

----
d:\Lukas\ConTeXt\Test>
Ctx.bat Pablo.mkiv --mode=1 & move /y Pablo.pdf Pablo_.pdf & Ctx.bat 
Pablo.mkiv --mode=2
----

Best regards,

Lukas


On 2020-02-06 16:28, Pablo Rodriguez wrote:
> Dear list,
> 
> I have the following sample:
> 
>     \starttext
>     \input knuth
>     \page[right]
>     \setuplayout[page]
>         \externalfigure[\jobname.pdf][page=1]
>     \stoptext
> 
> My question is how to get a page from the document you‘re compiling
> repeated inside the same document.
> 
> I have tried to search both i-context.pdf and the wiki, but “mirror” 
> and
> “repeat” seem to be bad options.
> 
> Many thanks in advance,
> 
> 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
> ___________________________________________________________________________________

[-- Attachment #2: Pablo.mkiv --]
[-- Type: text/plain, Size: 342 bytes --]

\starttext
  \setupheadertexts[][\cldcontext{"Mode = " .. (tex.modes["1"] and "1" or tex.modes["2"] and "2" or "??")}] % Just for debugging

  \input knuth

  \page[right]
  \startmodeset
    [1]
    {%
      \setuplayout[page] foo
    }
    [2]
    {%
      \pagefigure[\jobname_.pdf][page=1]
    }
  \stopmodeset
\stoptext

[-- Attachment #3: Type: text/plain, Size: 493 bytes --]

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