Accessing current XML node in Lua function

Accessing current XML node in Lua function

[Birke, Gabriel]

Hi,

I'd like to write a Lua function that processes the href attribute from a
HTML file and outputs different content depending on the URL.
However, I don't know how to convert the XML attribute and the contents of
the link tag to a string value for the Lua function. I've tried the
following, which does not work but makes my intention clearer:

\startxmlsetups xml:a
    \directlua{getlinkcode("\\xmlatt{#1}{href}", "\\xmlflush{#1}")}
\stopxmlsetups

It's probably calls to lxml.att and lxml.flush instead of the strings, but
how do I convert the "#1" ?

Kind regards,

Gabriel

--
Gabriel Birke
Open Science Lab
Technische Informationsbibliothek / German National Library of Science and
Technology
Welfengarten 1 B, 30167 Hannover, Germany
Telefon: +49 511 762 14235
E-Mail: gabriel.birke@tib.uni-hannover.de
Internet: http://www.tib.uni-hannover.de
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Re: Accessing current XML node in Lua function

[Thomas A. Schmitz]

On 02/25/2014 11:13 AM, Birke, Gabriel wrote:
> Hi,
>
> I'd like to write a Lua function that processes the href attribute from a
> HTML file and outputs different content depending on the URL.
> However, I don't know how to convert the XML attribute and the contents of
> the link tag to a string value for the Lua function. I've tried the
> following, which does not work but makes my intention clearer:
>
> \startxmlsetups xml:a
>      \directlua{getlinkcode("\\xmlatt{#1}{href}", "\\xmlflush{#1}")}
> \stopxmlsetups
>
> It's probably calls to lxml.att and lxml.flush instead of the strings, but
> how do I convert the "#1" ?
>
> Kind regards,
>
> Gabriel

Have you seen http://wiki.contextgarden.net/XML_Lua ? In lua, you get 
the attribute with xml.attribute(t, "/", "name", "default value"), and 
can then use it for tests or typeset it. If you want to know more, you 
will need to provide a real example instead of a code snippet.

Thomas

Thomas

-- 
Prof. Dr. Thomas A. Schmitz
Geschäftsführender Direktor
Institut für Klassische und Romanische Philologie
Universität Bonn
Am Hof 1e
53113 Bonn
http://www.philologie.uni-bonn.de/personal/schmitz
___________________________________________________________________________________
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
___________________________________________________________________________________