xml processing in lua

xml processing in lua

[Thomas A. Schmitz]

Hi all,

after boring people with xml processing in TeX at the meeting in 
Bassenge, I'm looking for new challenges and am trying my hand at 
processing xml in lua. But so far, even the simplest things escape me. 
Here's an example:

\startbuffer[test]
<a>
   <b>One</b>
   <c>Two</c>
</a>
\stopbuffer

\startxmlsetups xml:setups
	\xmlsetsetup{main}{a|b|c}{xml:*}
\stopxmlsetups

\xmlregistersetup{xml:setups}

% \startxmlsetups xml:a
% 	\xmltext{#1}{/c}
% \stopxmlsetups

\startxmlsetups xml:a
\startluacode
   context(xml.text("#1", "/b"))
\stopluacode
\stopxmlsetups

\starttext
\xmlprocessbuffer{main}{test}{}
\stoptext

 From what I thought I understood from the source, I believed that ll. 
14-16 (the commented part) and ll. 18-22 should be exactly equivalent, 
but that's not the case. A little hint might get me started...

All best, and thanks

Thomas
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___________________________________________________________________________________

Re: xml processing in lua

[Wolfgang Schuster]

Am 26.09.2011 um 20:57 schrieb Thomas A. Schmitz:

> Hi all,
> 
> after boring people with xml processing in TeX at the meeting in Bassenge, I'm looking for new challenges and am trying my hand at processing xml in lua. But so far, even the simplest things escape me. Here's an example:
> 
> \startbuffer[test]
> <a>
>  <b>One</b>
>  <c>Two</c>
> </a>
> \stopbuffer
> 
> \startxmlsetups xml:setups
> 	\xmlsetsetup{main}{a|b|c}{xml:*}
> \stopxmlsetups
> 
> \xmlregistersetup{xml:setups}
> 
> % \startxmlsetups xml:a
> % 	\xmltext{#1}{/c}
> % \stopxmlsetups
> 
> \startxmlsetups xml:a
> \startluacode
>  context(xml.text("#1", "/b"))

context(lxml.text("#1","/b"))

or

context.xmltext("#1","/b")

Wolfgang
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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: xml processing in lua

[Aditya Mahajan]

On Mon, 26 Sep 2011, Thomas A. Schmitz wrote:

> Hi all,
>
> after boring people with xml processing in TeX at the meeting in Bassenge, 
> I'm looking for new challenges and am trying my hand at processing xml in 
> lua. But so far, even the simplest things escape me. Here's an example:
>
> \startbuffer[test]
> <a>
>  <b>One</b>
>  <c>Two</c>
> </a>
> \stopbuffer
>
> \startxmlsetups xml:setups
> 	\xmlsetsetup{main}{a|b|c}{xml:*}
> \stopxmlsetups
>
> \xmlregistersetup{xml:setups}
>
> % \startxmlsetups xml:a
> % 	\xmltext{#1}{/c}
> % \stopxmlsetups
>
> \startxmlsetups xml:a
> \startluacode
>  context(xml.text("#1", "/b"))
> \stopluacode
> \stopxmlsetups
>
> \starttext
> \xmlprocessbuffer{main}{test}{}
> \stoptext
>
> From what I thought I understood from the source, I believed that ll. 14-16 
> (the commented part) and ll. 18-22 should be exactly equivalent, but that's 
> not the case. A little hint might get me started...

Untested ... you can try context.xmltext("#1", "/b")

Aditya
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maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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___________________________________________________________________________________

Re: xml processing in lua

[Thomas A. Schmitz]

On 09/26/2011 09:15 PM, Aditya Mahajan wrote:
> On Mon, 26 Sep 2011, Thomas A. Schmitz wrote:
>
>> Hi all,
>>
>> after boring people with xml processing in TeX at the meeting in
>> Bassenge, I'm looking for new challenges and am trying my hand at
>> processing xml in lua. But so far, even the simplest things escape me.
>> Here's an example:
>>
>> \startbuffer[test]
>> <a>
>> <b>One</b>
>> <c>Two</c>
>> </a>
>> \stopbuffer
>>
>> \startxmlsetups xml:setups
>> \xmlsetsetup{main}{a|b|c}{xml:*}
>> \stopxmlsetups
>>
>> \xmlregistersetup{xml:setups}
>>
>> % \startxmlsetups xml:a
>> % \xmltext{#1}{/c}
>> % \stopxmlsetups
>>
>> \startxmlsetups xml:a
>> \startluacode
>> context(xml.text("#1", "/b"))
>> \stopluacode
>> \stopxmlsetups
>>
>> \starttext
>> \xmlprocessbuffer{main}{test}{}
>> \stoptext
>>
>> From what I thought I understood from the source, I believed that ll.
>> 14-16 (the commented part) and ll. 18-22 should be exactly equivalent,
>> but that's not the case. A little hint might get me started...
>
> Untested ... you can try context.xmltext("#1", "/b")
>
> Aditya

Aditya, Wolfgang,

thanks a lot for your solutions, both work. With Wolfgang at Bassenge, 
and the network there being flaky, others had a chance of being faster
than him, but now he's back and rules with an iron fist :-)

All best

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
___________________________________________________________________________________