On 3/5/2013 9:47 AM, Thomas A. Schmitz wrote:
Hi,
may I ask another question about my new favorite topic? No? Anyway: here
comes. While processing xml, I would like to store the content of a node
in a lua table and retrieve it later. The example is silly, but
demonstrates my problem. Is there a way to have ConTeXt process and
typeset the value in lines 3 and 4? As you can see, it typesets the raw
xml instead of processing it. (I suspect I'm still a bit lost regarding
the difference between xml... and lxml... functions, but I couldn't hit
the right combination here).
lookuptable[mytype] = mytype .. " = " .. myvalue
inspect(lookuptable)
the .. triggers a tostring on myvalue which in turn serializes the xml
lookuptable[mytype] = { mytype = myvalue }
would keep myvalue as xml node
Thanks, and all best
Thomas
\startbuffer[test]
<a>
<b><c>Fruit</c> <d><e>Apple</e></d></b>
<b><c>Vegetable</c> <d><q>Carot</q></d></b>
<b><c>Fruit</c></b>
<b><c>Vegetable</c></b>
</a>
\stopbuffer
\startxmlsetups xml:testsetups
\xmlsetsetup{\xmldocument}{a|b|c|d}{xml:*}
\stopxmlsetups
\xmlregistersetup{xml:testsetups}
\startxmlsetups xml:a
\xmlflush{#1}
\stopxmlsetups
\startxmlsetups xml:b
\xmlfunction{#1}{lookup} \par
\stopxmlsetups
\startxmlsetups xml:e
{\bgroup\em \xmlflush{#1}\egroup}
\stopxmlsetups
\startxmlsetups xml:q
\quotation{\xmlflush{#1}}
\stopxmlsetups
\startluacode
lookuptable = { }
function xml.functions.lookup(t)
mytype = xml.text(t, "c")
myvalue = xml.text(t, "d")
if not lookuptable[mytype] then
context("New Type: ") context(mytype) context("; its value is: ")
lxml.text(t, "d")
lookuptable[mytype] = mytype .. " = " .. myvalue
else
context("This Type is already known: ") context(lookuptable[mytype])
end
end
\stopluacode
\starttext
\xmlprocessbuffer{main}{test}{}
\stoptext
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