From: Denis Maier via ntg-context <ntg-context@ntg.nl>
To: <ntg-context@ntg.nl>
Cc: denis.maier@unibe.ch, thomas.schmitz@uni-bonn.de
Subject: Re: Xml filtering in Lua
Date: Wed, 16 Nov 2022 20:51:10 +0000 [thread overview]
Message-ID: <17811cfc131b41edae5ea2168e77c912@unibe.ch> (raw)
In-Reply-To: <2d5a5ef3-ed95-9e95-cfee-b8794294daff@uni-bonn.de>
Just a quick question regarding this?
Is xml.filter equivalent to \xmlfilter? If so, how do you pass the match to a command as you'd do with \xmlfilter?
Best,
Denis
> -----Ursprüngliche Nachricht-----
> Von: ntg-context <ntg-context-bounces@ntg.nl> Im Auftrag von mf via ntg-
> context
> Gesendet: Mittwoch, 16. November 2022 20:56
> An: ntg-context@ntg.nl
> Cc: mf <massifr@fastwebnet.it>
> Betreff: Re: [NTG-context] Xml filtering in Lua
>
> This works:
>
> local metadata = xml.filter (t, '../../topics/topic[@t:id=="' .. ch_id .. '"]')
>
> also this:
>
> local lpath = string.format('../../topics/topic[@t:id=="%s"]', ch_id)
>
> local metadata = xml.filter (t, lpath)
>
>
> It looks like xml.filter supports only 2 arguments (see lxml-tex.lua), and so it
> doesn't let you use string formatting patterns like the "context" command
> does.
>
> You can write:
>
> context('the value of @t:id is "%s"', ch_id)
>
> but you can't write:
>
> xml.filter (t, '../../topics/topic[@t:id=="%s"]', ch_id)
>
>
> Best wishes,
>
> Massi
>
> __________________________________________________________
> _________________________
> If your question is of interest to others as well, please add an entry to the
> Wiki!
>
> maillist : ntg-context@ntg.nl / https://www.ntg.nl/mailman/listinfo/ntg-
> context
> webpage : https://www.pragma-ade.nl / http://context.aanhet.net archive
> : https://bitbucket.org/phg/context-mirror/commits/
> wiki : https://contextgarden.net
> __________________________________________________________
> _________________________
> -----Ursprüngliche Nachricht-----
> Von: ntg-context <ntg-context-bounces@ntg.nl> Im Auftrag von Thomas A.
> Schmitz via ntg-context
> Gesendet: Mittwoch, 16. November 2022 20:56
> An: mailing list for ConTeXt users <ntg-context@ntg.nl>
> Cc: Thomas A. Schmitz <thomas.schmitz@uni-bonn.de>
> Betreff: Re: [NTG-context] Xml filtering in Lua
>
> On 11/16/22 19:56, mf via ntg-context wrote:
> > local ch_id = t.at["ch:id"]
>
> You're right, of course, using a colon was a stupid idea. When I replace it with
> an underscore, you can see that both are in fact identical:
>
> \startbuffer[test]
> <document>
> <topics>
> <topic t_id="test1">
> <title>This is the first test</title>
> <date>22/11/16</date>
> </topic>
> <topic t_id="test2">
> <title>This is the second test</title>
> <date>22/11/17</date>
> </topic>
> </topics>
> <chapters>
> <chapter ch_id="test1">
> <content>
> This will be the content of the <emph>first</emph> chapter.
> </content>
> </chapter>
> <chapter ch_id="test2">
> <content>
> This will be the content of the <emph>second</emph> chapter.
> </content>
> </chapter>
> </chapters>
> </document>
> \stopbuffer
>
> \startxmlsetups xml:testsetups
> \xmlsetsetup{#1}{*}{-}
> \xmlsetsetup{#1}{document|chapters|chapter|content|emph}{xml:
> *}
> \stopxmlsetups
>
> \xmlregistersetup{xml:testsetups}
>
> \startxmlsetups xml:document
> \xmlflush{#1}
> \stopxmlsetups
>
> \startxmlsetups xml:chapters
> \xmlflush{#1}
> \stopxmlsetups
>
> \startxmlsetups xml:chapter
> \xmlfunction {#1} {chapter}
> % \xmlflush {#1}
> \stopxmlsetups
>
> \startxmlsetups xml:chapter:content
> \xmltext {#1} {content}
> \stopxmlsetups
>
> \startxmlsetups xml:emph
> {\em \xmlflush {#1}}
> \stopxmlsetups
>
> \startluacode
> function xml.functions.chapter (t)
> local chapter_id = t.at.ch_id
> local other_chapter_id = t.at["ch_id"]
> context (chapter_id)
> context.par ()
> context (other_chapter_id)
> context.par ()
> local metadata = xml.filter (t, '../../topics/topic[@t:id=="%s"]',
> ch_id)
> print (inspect(metadata))
> lxml.command(t, ".", "xml:chapter:content")
> context.par ()
> end
> \stopluacode
>
> \starttext
> \xmlprocessbuffer{main}{test}{}
> \stoptext
>
> __________________________________________________________
> _________________________
> If your question is of interest to others as well, please add an entry to the
> Wiki!
>
> maillist : ntg-context@ntg.nl / https://www.ntg.nl/mailman/listinfo/ntg-
> context
> webpage : https://www.pragma-ade.nl / http://context.aanhet.net archive
> : https://bitbucket.org/phg/context-mirror/commits/
> wiki : https://contextgarden.net
> __________________________________________________________
> _________________________
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / https://www.ntg.nl/mailman/listinfo/ntg-context
webpage : https://www.pragma-ade.nl / http://context.aanhet.net
archive : https://bitbucket.org/phg/context-mirror/commits/
wiki : https://contextgarden.net
___________________________________________________________________________________
next prev parent reply other threads:[~2022-11-16 20:51 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-16 16:10 Thomas A. Schmitz via ntg-context
2022-11-16 16:18 ` Duncan Hothersall via ntg-context
2022-11-16 17:33 ` Thomas A. Schmitz via ntg-context
2022-11-16 18:56 ` mf via ntg-context
2022-11-16 19:55 ` Thomas A. Schmitz via ntg-context
2022-11-16 20:51 ` Denis Maier via ntg-context [this message]
2022-11-16 21:09 ` Thomas A. Schmitz via ntg-context
2022-11-16 22:19 ` Hans Hagen via ntg-context
2022-11-16 19:56 ` mf via ntg-context
2022-11-17 10:04 ` Hans Hagen via ntg-context
2022-11-17 10:56 ` Thomas A. Schmitz via ntg-context
2022-11-20 18:19 ` Thomas A. Schmitz via ntg-context
2022-11-21 8:23 ` Thomas A. Schmitz via ntg-context
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