Re: [NTG-context] luatex and xml
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 [EMAIL PROTECTED] 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
nummer123456789/nummer
datum1 januari 2008/datum
medewerker/medewerker
regels
omschrijvingOmschrijving geleverde dienst a/omschrijving
bedrag1500,00/bedrag
omschrijvingOmschrijving geleverde dienst b/omschrijving
bedrag200,00/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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Re: [NTG-context] luatex and xml
WN wrote:
Hi,
I am trying to parse a xml file with mkiv to process a list of invoices
(factuur in dutch).
please wikify the following solution ...
% engine=luatex
\startbuffer[whatever]
?xml version='1.0 standalone='yes' ?
factuur
nummer123456789/nummer
datum1 januari 2008/datum
medewerkerwhoever/medewerker
regels
omschrijvingOmschrijving geleverde dienst
a/omschrijvingbedrag1500,00/bedrag
omschrijvingOmschrijving geleverde dienst
b/omschrijvingbedrag200,00/bedrag
/regels
/factuur
\stopbuffer
\startxmlsetups xml:invoice
\xmlsetsetup{main}{factuur}{xml:*}
\stopxmlsetups
\xmlregistersetup{xml:invoice}
\startluacode
document.user = document.user or {}
function document.user.sum(root)
root = lxml.id(root)
local sum = 0
for r, d, k in xml.elements(root,regels/bedrag) do
local data = xml.content(d[k])
data = data:gsub(,,.)
sum = sum + tonumber(data)
end
local result = string.format(%0.2f,sum)
result = result:gsub(%.,,)
tex.write(result)
end
\stopluacode
\startxmlsetups xml:factuur
... \ctxlua{document.user.sum(#1)} ...
\stopxmlsetups
\starttext
\xmlprocessbuffer{main}{whatever}{}
\stoptext
-
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com
| www.pragma-pod.nl
-
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[NTG-context] luatex and xml
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
nummer123456789/nummer
datum1 januari 2008/datum
medewerker/medewerker
regels
omschrijvingOmschrijving geleverde dienst a/omschrijving
bedrag1500,00/bedrag
omschrijvingOmschrijving geleverde dienst b/omschrijving
bedrag200,00/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
___
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
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