Re: [NTG-context] mkiv: append to buffer
On Sat, 18 Dec 2010 19:35:53 +0100
Wolfgang Schuster schuster.wolfg...@googlemail.com
wrote:
Am 18.12.2010 um 17:52 schrieb Aditya Mahajan:
I am not sure what you want to do, and why you want to
use buffers. Wont a simple token list work?
I can only agree with this, token lists are the easiest
solution but the new cld manuals mentions the
context.tobuffer function which allows one to add
content to a buffer.
Wolfgang
Aditya, Wolfgang, thanks for your replies. I didn't want
to bore the list with lengthy explanations, but maybe I
didn't give enough information. So here comes what I hope
are the relevant bits: I'm typesetting sheets with
problems and solutions for a class. Those come from an xml
database. Unfortunately, there is one catch: depending on
the type of the problem, some problems don't have an
explicit solution. The problems are typeset as a numbered
itemization on page 1; on page 2, I want the solutions,
with matching numbers. And since I'm lazy, I don't want to
take care of this myself but have context do it for me. So
let's begin with the output. I want:
PROBLEMS
1. problem without solution
2. problem with solution
3. problem without solution
4. problem with solution
and then, on a new page:
SOLUTIONS
2. solution to 2
4. solution to 4
So: I have been trying to write a macro that will retrieve
problems from the database (successful, with help by
Hans), pack them in an itemize list (successful), and
store the solution somewhere so it can be typeset on the
next page (unsuccessful as yet). I thought buffers were
the natural way to go, but I must admit I didn't know
about tokenlists. Aditya's suggestion unfortunately
doesn't seem to work with itemizations. Test files:
This works:
\newtoks\mytoks
\def\TestMacro#1#2#3%
{\color[darkred]{#1} \color[darkblue]{#2}\endgraf
\appendtoks \color[darkgreen]{#3} \to\mytoks}
\starttext
\TestMacro{A}{B}{C}
\TestMacro{X}{Y}{Z}
\hairline
\the\mytoks
and this doesn't:
\newtoks\mytoks
\def\TestMacro#1#2#3%
{\item[#1] #2\par
\appendtoks \in[#1]: {#3} \to\mytoks}
\starttext
\startitemize[n]
\TestMacro{A}{B}{C}
\TestMacro{X}{Y}{Z}
\stopitemize
\hairline
\the\mytoks
I have absolutely no preference for buffers or
itemizations or whatever, so if there's a better solution,
I'm all open. But for the time being, I don't get what I
want. I'll look into context.tobuffer next...
Thanks for any suggestions, and best wishes
Thomas
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Re: [NTG-context] mkiv: append to buffer
On Sun, Dec 19 2010, Thomas Schmitz wrote:
and this doesn't:
\newtoks\mytoks
\def\TestMacro#1#2#3%
{\item[#1] #2\par
\appendtoks \in[#1]: {#3} \to\mytoks}
\doglobal \appendtoks \in[#1]: {#3} \to\mytoks}
Cheers, Peter
--
Contact information: http://pmrb.free.fr/contact/
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Re: [NTG-context] mkiv: append to buffer
On Sun, 19 Dec 2010 13:21:26 +0100
Peter Münster pmli...@free.fr wrote:
On Sun, Dec 19 2010, Thomas Schmitz wrote:
and this doesn't:
\newtoks\mytoks
\def\TestMacro#1#2#3%
{\item[#1] #2\par
\appendtoks \in[#1]: {#3} \to\mytoks}
\doglobal \appendtoks \in[#1]: {#3} \to\mytoks}
Cheers, Peter
Hooray, not it works!!! Thanks a lot, everyone, thanks
Peter - so easy, yet my knowledge of TeX wasn't advanced
enough to see this. Is it because I'm inside a group and
TeX empties the tokenlist once I get out of the group?
All best
Thomas
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Re: [NTG-context] mkiv: append to buffer
Hooray, not it works!!! s/not/now/ Thomas ___ 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] mkiv: append to buffer
On 19-12-2010 12:28, Thomas Schmitz wrote: So: I have been trying to write a macro that will retrieve problems from the database (successful, with help by Hans), pack them in an itemize list (successful), and store the solution somewhere so it can be typeset Why do you store the solutions if they're already stored in the xml? You can just filter them any time you want, can't you? Hans - 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 - ___ 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] mkiv: append to buffer
On Sun, Dec 19 2010, Thomas Schmitz wrote: easy, yet my knowledge of TeX wasn't advanced enough to see this. Is it because I'm inside a group and TeX empties the tokenlist once I get out of the group? In this case yes, because the list was empty before the group. In general you get the value, that you had before entering the group. Peter -- Contact information: http://pmrb.free.fr/contact/ ___ 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 ___
[NTG-context] mkiv: append to buffer
Hi all,
i guess this is easy, but I can't find an example to help
me: I want to write a macro that will collect one of its
arguments in a buffer and then collect the other argument
in a buffer. Difficult to make a minimal example since I
don't know how to do this, so here is some pseudo-code;
this is what I want to achieve:
\definebuffer[MyBuffer]
\def\MyGreatMacro#1#2#3%
{\item[#1] #2 \par
\appendtobuffer{MyBuffer}{\in[#1] #3}}
\starttext
\startitemize
\MyGreatMacro{1}{aa}{AA}
\MyGreatMacro{2}{bb}{BB}
\stopitemize
\page
\getbuffer[MyBuffer]
\resetbuffer[MyBuffer] % so I can reuse the buffer
\stoptext
What I want to do with this is typeset exercises for my
students, with an itemization for problems and solutions
which use the same numbering. In real life, this will
involve xml, but I will try and figure that out myself
once I know how to use buffers...
It looks like buffers.collectcontent should be able to do
this, but I can't figure out how to use it. Any pointers?
Thanks a lot!
All best
Thomas
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Re: [NTG-context] mkiv: append to buffer
On Sat, 18 Dec 2010, Thomas Schmitz wrote:
i guess this is easy, but I can't find an example to help
me: I want to write a macro that will collect one of its
arguments in a buffer and then collect the other argument in a buffer.
Difficult to make a minimal example since I don't know how to do this, so
here is some pseudo-code; this is what I want to achieve:
\definebuffer[MyBuffer]
\def\MyGreatMacro#1#2#3%
{\item[#1] #2 \par
\appendtobuffer{MyBuffer}{\in[#1] #3}}
\starttext
\startitemize
\MyGreatMacro{1}{aa}{AA}
\MyGreatMacro{2}{bb}{BB}
\stopitemize
\page
\getbuffer[MyBuffer]
\resetbuffer[MyBuffer] % so I can reuse the buffer
\stoptext
What I want to do with this is typeset exercises for my students, with an
itemization for problems and solutions which use the same numbering. In real
life, this will involve xml, but I will try and figure that out myself once I
know how to use buffers...
It looks like buffers.collectcontent should be able to do this, but I can't
figure out how to use it. Any pointers? Thanks a lot!
I am not sure what you want to do, and why you want to use buffers. Wont a
simple token list work?
% Define a token list
\newtoks\mytoks
% Append to a token list
\appendtoks \in[#1] #3 \to\mytoks
% Recall a token list
\the\mytoks
% Reset a token list
\mytoks\emptytoks
For repeating question and answers, there is also blocks.
Aditya
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wiki : http://contextgarden.net
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Re: [NTG-context] mkiv: append to buffer
Am 18.12.2010 um 17:52 schrieb Aditya Mahajan: I am not sure what you want to do, and why you want to use buffers. Wont a simple token list work? I can only agree with this, token lists are the easiest solution but the new cld manuals mentions the “context.tobuffer” function which allows one to add content to a buffer. Wolfgang ___ 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 ___
