On 6/18/2020 3:24 PM, Gerben Wierda wrote:
Given the following XML snippet
<opa id=“opa">
<Foo name="SubFoo Level One" id="Foo">
<Foo name="SubFoo Level Two" id="Foo_2">
<bar id="Bar" name="A Bar">
<bar name="Bar Level Three" id="Bar_2">
<Foo id="oma">OmaFoo</Foo>
</bar>
</bar>
<Foo name="Fuzz Level Four" id="Fuzz"/>
</Foo>
<Foo name="SubFoo Level Two" id="Foo_3">
<fuzz name="Fuzz" id="Fuzz_2"/>
</Foo>
</Foo>
</opa>
How would I go about to find the depth of an item found with an LPATH? E.g.
//[id="Foo_3"] would find a node at depth 2 (assuming <opa> is at level 0) while
//[id=“Fuzz_2"] would find a node at depth 3 and in either cases I would like to get that
number (2 or 3) as well as the actual node. I can assume the values for ‘id’ are unique.
I was wondering how I could go about finding the ‘depth’ of an item in the XML
when using the LMTX built-in functions to work with XML. I don’t think there is
a default function for that, is there?
You don't deserve an answer because this is not a MWE!
\startbuffer[test]
<something>
<what>
<what>
here
</what>
</what>
</something>
\stopbuffer
\startxmlsetups xml:mysetups
\xmlsetsetup{#1}{something|what}{xml:*}
\stopxmlsetups
\xmlregistersetup{xml:mysetups}
\startxmlsetups xml:something
\xmlflush{#1}
\stopxmlsetups
\startluacode
function xml.finalizers.tex.depth(t)
local d = 0
local t = t and t[1]
while t do
d = d + 1
t = xml.parent(t)
if not t then
break
end
end
context(d)
end
\stopluacode
\startxmlsetups xml:what
\xmldoifelse {#1} {..[name() == "what"]} {
YES
} {
NOP
}
[\xmlflush{#1}]
(\xmlfilter{#1}{./depth()})
\stopxmlsetups
\starttext
\xmlprocessbuffer{main}{test}{}
\stoptext
I might add it anyway (a faster variant that is),
Hans
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