From: mf <massifr@fastwebnet.it>
To: ntg-context@ntg.nl
Subject: Re: passing variables/data between context and lua
Date: Fri, 27 Sep 2019 10:41:16 +0200 [thread overview]
Message-ID: <2c24636c-53c1-dab5-a066-37988a89888c@fastwebnet.it> (raw)
In-Reply-To: <46302c5715d57820fa2186c912cbd198ca0e1910.camel@yahoo.com>
\starttext
\define\question{44}
\startluacode
-- see "ConTeXt Lua Documents" manual, §7.4 Looking inside
local question = tokens.getters.macro("question")
-- it's up to you to verify that \question contains a number
-- better using the userdata table for your data
userdata.points = tonumber( question ) * 92
-- do some calculations with points and return to to context
userdata.answer=42
\stopluacode
% lots of Text in between
The answer is \ctxlua{ context(userdata.answer) }. Points are \ctxlua{
context(userdata.points) }.
\stoptext
Best wishes,
Massi
Il 27/09/19 06:59, Martin Althoff ha scritto:
> Hi, I am trying to pass variables/data between context and lua. Lua would be used for
> calculations on data coming from context.
>
> Unfortunately I can't figure out what to do. The code below doesn't work, but is there to
> illustrate my idea.
>
> Any help would be much appreciated. Thanks, Martin
>
>
> \define\question{44}
>
> \starttext
>
> \startluacode
> local points = \question * 92
> -- do some calculations with points and return to to context
> answer=42
> \stopluacode
>
> % lots of Text in between
> The answer is \answer
>
> \stoptext
>
> ___________________________________________________________________________________
> 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
> ___________________________________________________________________________________
>
___________________________________________________________________________________
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
___________________________________________________________________________________
next prev parent reply other threads:[~2019-09-27 8:41 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-27 4:59 Martin Althoff
2019-09-27 8:41 ` mf [this message]
2019-09-27 12:58 ` Wolfgang Schuster
2019-09-28 6:53 ` defs, variables and dimensions (was: passing variables/data between context and lua) Henning Hraban Ramm
2019-09-28 17:51 ` defs, variables and dimensions Wolfgang Schuster
2019-09-30 2:51 ` defs, variables and dimensions (was: passing variables/data between context and lua) Martin Althoff
2019-09-29 11:51 ` passing variables/data between context and lua Martin Althoff
2019-10-06 5:11 ` Rudolf Bahr
2019-10-06 20:44 ` Wolfgang Schuster
2019-10-08 7:21 ` Rudolf Bahr
2019-10-08 12:55 ` Aditya Mahajan
2019-10-08 16:22 ` Rudolf Bahr
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