Re: index(register) from an XML source

[Hans Hagen <pragma@wxs.nl>]

On 1/14/2017 3:52 PM, MF wrote:
> 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?

no, but the effect can be the same (just compare the tuc files)

> 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?

comparable

btw, you can better use deeptextcommand as textcommand gets something 
more passed

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                                           Hans Hagen | PRAGMA ADE
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