Re: [NTG-context] What exactly is lpath?

2022-08-03 Thread Pablo Rodriguez via ntg-context
On 8/3/22 16:39, Denis Maier via ntg-context wrote:
> [...]
> Just like Pablo, I'm from time to time reading through the xml-mkiv
> manual, and I was just wondering if there other places where I can
> other examples or explanations. (If it were a more general Lua thing
> for example...)

Hi Dennis,

my impression is that (at least in my case) the hardest part is to
figure out how XPath actually works.

For that, I wonder whether
https://github.com/sarahalang/Harvard_BeyondTEI_Workshop_SLang2022 may
be helpful.

This is from the LaTeX-Ninja (Sarah A. Lang). But nothing prevents using
it as an exercise for ConTeXt users. I haven’t done it myself.

Just in case it might help,

Pablo
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Re: [NTG-context] What exactly is lpath?

2022-08-03 Thread Hans Hagen via ntg-context

On 8/3/2022 4:39 PM, Denis Maier via ntg-context wrote:

-Ursprüngliche Nachricht-
Von: ntg-context  Im Auftrag von Hans Hagen
via ntg-context
Gesendet: Mittwoch, 3. August 2022 10:35
An: Denis Maier via ntg-context 
Cc: Hans Hagen 
Betreff: Re: [NTG-context] What exactly is lpath?

On 8/3/2022 9:46 AM, Denis Maier via ntg-context wrote:

Hi everyone
Just a question I've been thinking about from time to time: What exactly is

lpath? Is that ConTeXt-specific? Or something more general from Lua? I've of
course asked Google, but Lpath seems to a Python-inspired path library for
Lua unrelated to XML...
it's a bit like xpath ... a way to access arbitrary nodes in a xml tree with 
lokup
and access 'patterns'


Thanks. That I do know. I was more wondering where that is coming. (My question 
was probably not that clear.)
As I couldn't find more about it I guess it's ConTeXt-specific, not something 
coming from the Lua ecosystem...


indeed, all lua code is written in the context perspective; we used some 
socket code but that was also stripped and parially redone (seemed not 
maintained at that time)


keep in mind that we started with luate xin 2005 so much of the lua code 
had to be written anyway and it also had to be pretty efficient and 
useable in tex; roberto had an example of a simple xml parser and for 
xml i started from that but by now it's quite different and way more 
extensive; we need to be able to handle huge files


so, no dependencies and we keep it that way


Just like Pablo, I'm from time to time reading through the xml-mkiv manual, and 
I was just wondering if there other places where I can other examples or 
explanations. (If it were a more general Lua thing for example...)


the test suite and x-* files ...

Hans


-
  Hans Hagen | PRAGMA ADE
  Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
   tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
-
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Re: [NTG-context] What exactly is lpath?

2022-08-03 Thread Denis Maier via ntg-context
> -Ursprüngliche Nachricht-
> Von: ntg-context  Im Auftrag von Hans Hagen
> via ntg-context
> Gesendet: Mittwoch, 3. August 2022 10:35
> An: Denis Maier via ntg-context 
> Cc: Hans Hagen 
> Betreff: Re: [NTG-context] What exactly is lpath?
> 
> On 8/3/2022 9:46 AM, Denis Maier via ntg-context wrote:
> > Hi everyone
> > Just a question I've been thinking about from time to time: What exactly is
> lpath? Is that ConTeXt-specific? Or something more general from Lua? I've of
> course asked Google, but Lpath seems to a Python-inspired path library for
> Lua unrelated to XML...
> it's a bit like xpath ... a way to access arbitrary nodes in a xml tree with 
> lokup
> and access 'patterns'

Thanks. That I do know. I was more wondering where that is coming. (My question 
was probably not that clear.) 
As I couldn't find more about it I guess it's ConTeXt-specific, not something 
coming from the Lua ecosystem...
Just like Pablo, I'm from time to time reading through the xml-mkiv manual, and 
I was just wondering if there other places where I can other examples or 
explanations. (If it were a more general Lua thing for example...)

Denis
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Re: [NTG-context] What exactly is lpath?

2022-08-03 Thread Hans Hagen via ntg-context

On 8/3/2022 9:46 AM, Denis Maier via ntg-context wrote:

Hi everyone
Just a question I've been thinking about from time to time: What exactly is 
lpath? Is that ConTeXt-specific? Or something more general from Lua? I've of 
course asked Google, but Lpath seems to a Python-inspired path library for Lua 
unrelated to XML...
it's a bit like xpath ... a way to access arbitrary nodes in a xml tree 
with lokup and access 'patterns'


Hans

-
  Hans Hagen | PRAGMA ADE
  Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
   tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
-
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