Re: [NTG-context] luatex and xml

18 May 2008

      Thanks Wolfgang for your time and the attachments you send me.

I don't want to sound ungrateful for the hard work and
for the nice module you send me, but  I was looking for another solution
where I don't have to use Context macro's and setups.

I want to use a little bit of lua code to get to the data I want. I think
I will have greater control independent of the xml macro's (to be honest 
I find
them difficult to understand).

The solution I am looking for, is to use the function xml.filter 
(defined in l-xml.lua)
and to assign the outcome to local variables.

Kind regards
Wim
...
Hi,
take a look into invoice.tex in my attachment.
Wolfgang
On Sun, 18 May 2008 02:20:00 +0200
WN  wrote:
...
Hi,
I am trying to parse a xml file with mkiv to process a list of invoices 
(factuur in dutch).
The xml file looks like this
<?xml version='1.0 standalone='yes' ?>
<factuur>
<nummer>123456789</nummer>
<datum>1 januari 2008</datum>
<medewerker></medewerker>
<regels>
<omschrijving>Omschrijving geleverde dienst a</omschrijving>
<bedrag>1500,00</bedrag>
<omschrijving>Omschrijving geleverde dienst b</omschrijving>
<bedrag>200,00</bedrag>
</regels>
</factuur>
I want to extract and sum the invoices (regels). I managed to get things 
working (printing)
but don't know how to assign these values into lua variables for the 
summing.
The test code looks like this
% engine=luatex
\starttext
\startluacode
document.xml = document.xml or { } -- define namespace
document.xml = xml.load("factuur.xml") -- load the file
n = xml.count(document.xml, "/factuur/regels/omschrijving")
for i = 1, n do
--
-- here I want to assign the values returned by xml.filter into local 
variable amount
--
xml.sprint(xml.filter(document.xml, "/factuur/regels/bedrag/position(" 
.. i .. ")" ))
end
\stopluacode
\stoptext
Kind regards
WN
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maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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___________________________________________________________________________________
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___________________________________________________________________________________
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  : https://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________