xmlfilter in lua

xmlfilter in lua

[Thomas A. Schmitz]

Hi,

hope this is comprehensible without a full example: I want to do some 
operations on my xml, and that's easier to do in Lua. However, I cannot 
find how to filter my results and pass them on to a command. In TeX, I 
would do this:

\startxmlsetups xml:a
  \xmlfilter{#1}{/b/command(xml:command:b)}
\stopxmlsetups

\startxmlsetups xml:command:b
  \xmlconcat{#1}{/}\par
\stopxmlsetups

How would I do the same thing in Lua? Here's what I tried:

function xml.functions.a(t)
  local b = lxml.filter(lxml.id(t), "/b")
  process(b)
end

function process(t)
  xml.xprint(t)
end

but that doesn't work yet, I get no results printed. So my question: 
what would be the right syntax in Lua? (And bonus points for: what is 
the equivalent of \xmlconcat ?)

All best

Thomas
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Re: xmlfilter in lua

[Thomas A. Schmitz]

On 28.07.2013 12:59, Thomas A. Schmitz wrote:
> Hi,
>
> hope this is comprehensible without a full example: I want to do some
> operations on my xml, and that's easier to do in Lua. However, I cannot
> find how to filter my results and pass them on to a command. In TeX, I
> would do this:
>
> \startxmlsetups xml:a
>   \xmlfilter{#1}{/b/command(xml:command:b)}
> \stopxmlsetups
>
> \startxmlsetups xml:command:b
>   \xmlconcat{#1}{/}\par
> \stopxmlsetups
>
> How would I do the same thing in Lua? Here's what I tried:
>
> function xml.functions.a(t)
>   local b = lxml.filter(lxml.id(t), "/b")
>   process(b)
> end
>
> function process(t)
>   xml.xprint(t)
> end
>
> but that doesn't work yet, I get no results printed. So my question:
> what would be the right syntax in Lua? (And bonus points for: what is
> the equivalent of \xmlconcat ?)
>
> All best
>
> Thomas

Replying to myself to correct: should have been

function process(t)
   xml.cprint(t)
end

obviously...

Thomas
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___________________________________________________________________________________

Re: xmlfilter in lua

[Thomas A. Schmitz]

Gentlemen and noble ladies,

may I rerun this question? It was posted on Sunday and may have escaped
those of you who celebrated this day in some manner.

Thanks for your attention!

T

On 07/28/2013 02:07 PM, Thomas A. Schmitz wrote:
> Hi,
> 
> hope this is comprehensible without a full example: I want to do some
> operations on my xml, and that's easier to do in Lua. However, I cannot
> find how to filter my results and pass them on to a command. In TeX, I
> would do this:
> 
> \startxmlsetups xml:a
>   \xmlfilter{#1}{/b/command(xml:command:b)}
> \stopxmlsetups
> 
> \startxmlsetups xml:command:b
>   \xmlconcat{#1}{/}\par
> \stopxmlsetups
> 
> How would I do the same thing in Lua? Here's what I tried:
> 
> function xml.functions.a(t)
>   local b = lxml.filter(lxml.id(t), "/b")
>   process(b)
> end
> 
> function process(t)
>   xml.cprint(t)
> end
> 
> but that doesn't work yet, I get no results printed. So my question:
> what would be the right syntax in Lua? (And bonus points for: what is
> the equivalent of \xmlconcat ?)
> 
> All best
> 
> Thomas


-- 
Prof. Dr. Thomas A. Schmitz
Abteilung für Griechische und Lateinische Philologie
Universität Bonn
Am Hof 1e
53113 Bonn
http://www.philologie.uni-bonn.de/personal/schmitz
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___________________________________________________________________________________

Re: xmlfilter in lua

[Hans Hagen]

On 7/31/2013 10:52 PM, Thomas A. Schmitz wrote:
> Gentlemen and noble ladies,
>
> may I rerun this question? It was posted on Sunday and may have escaped
> those of you who celebrated this day in some manner.
>
> Thanks for your attention!
>
> T
>
> On 07/28/2013 02:07 PM, Thomas A. Schmitz wrote:
>> Hi,
>>
>> hope this is comprehensible without a full example: I want to do some
>> operations on my xml, and that's easier to do in Lua. However, I cannot
>> find how to filter my results and pass them on to a command. In TeX, I
>> would do this:
>>
>> \startxmlsetups xml:a
>>    \xmlfilter{#1}{/b/command(xml:command:b)}
>> \stopxmlsetups
>>
>> \startxmlsetups xml:command:b
>>    \xmlconcat{#1}{/}\par
>> \stopxmlsetups
>>
>> How would I do the same thing in Lua? Here's what I tried:
>>
>> function xml.functions.a(t)
>>    local b = lxml.filter(lxml.id(t), "/b")
>>    process(b)
>> end
>>
>> function process(t)
>>    xml.cprint(t)
>> end
>>
>> but that doesn't work yet, I get no results printed. So my question:
>> what would be the right syntax in Lua? (And bonus points for: what is
>> the equivalent of \xmlconcat ?)

- real test file needed
- you use process before you define it

another approach is:

for c in xml.collected(lxml.id(t),"/b") do
	...
end

(see x-mathml, x-cals for examples)

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