a string xmlpath in Lua

a string xmlpath in Lua

[MF]

Hello list,
is there a Lua function to get the XML path of an element as a string?

\xmlpath typesets the path, I need a similar function for Lua, but the
path should be a string to be worked on in Lua.

This is the problem originating that question: i must name (give an id
to) some anonymous XML elements (read: "without an id attribute"), and
their path is a good candidate.

To be more precise: when i parse a <table> element, i look for elements
representing footnotes, to prepare them with \setnotetext;
then the table contents are parsed and the footnotes' markers are
typeset with \note[footnote_id].
When there are more footnotes, i need to identify them, to give \note
the right footnote id.

Thanks,
Massi
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Re: a string xmlpath in Lua

[MF]

> Hello list,
> is there a Lua function to get the XML path of an element as a
> string?
> 

Found. I adapted a function from lxml-tex.lua (chainpath):

function xmlpath( e, nonamespace )
  if e then
    local t = { }
    while e do
      local tg = e.tg
      local rt = e.__p__
      local ns = e.ns
      if tg == "@rt@" then
        break
      elseif rt.tg == "@rt@" then
        if nonamespace or not ns or ns == "" then
          t[ #t + 1 ] = tg
        else
          t[ #t + 1 ] = ns .. ":" .. tg
        end
      else
        if nonamespace or not ns or ns == "" then
          t[ #t + 1 ] = tg .. "[" .. e.ei .. "]"
        else
          t[ #t + 1 ] = ns .. ":" .. tg .. "[" .. e.ei .. "]"
        end
      end
      e = rt
    end
    return table.concat( table.reverse( t ), "/" )
  else
    return ""
  end
end
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