Re: index(register) from an XML source

[MF <massifr@fastwebnet.it>]

Thank you, Hans.
I had found a solution, then I saw your e-mail.
Anyway I've learned a lot from it.
My solution was something like this:

function xml.functions.indexEntry(e)
     local animal = animals[e.at.idref]
     if animal then
       --[[
         context.Animal (
             { animal.key },
             "\\xmlflush{main::" .. animal.entry.ix .. "}"
         )
       --]]
       context.Animal( { animal.key } )
       context.bgroup()
       lxml.flush(animal.entry)
       context.egroup()
     end
end

The PDF output is right. Is it really the same?

  * * *

Now an alternative approach I thought, because the index I'm working on
is a biographical index, I mean a index of cited people, with a
biographical profile. So every entry is a few lines long.
That's why I thought to index only the ids in the text and use a
textcommand in the index to pass from the id to the real entry.

Suppose to use \setupregister[Animal][textcommand=\fromIdToEntry] and
an indexEntry function modified like this:

function xml.functions.indexEntry(e)
     local animal = animals[e.at.idref]
     if animal then
         context.Animal( { animal.key }, e.at.idref )
     end
end

Without a textcommand, you would have an index of the ids.
The textcommand \fromIdToEntry should take the id of an index entry and
typeset the entry content.

\def\fromIdToEntry#1{ ... }

#1 is the id, but it's not a string.
Is there a way to use it as a string to look for the entry?
Is this approach better?

Thank you,
best regards,
Massi
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