The history of luaTEX 2006–2009 / v 0.50 - Pragma ADE

XVII
XML revisioned
under construction
the parser
For quite a while ConTEXt has built-in support for xml processing and at Pragma ADE we
use this extensively. One of the rst things I tried to deal with in Lua was xml, and now
that we have LuaTEX up and running it's time to investigate this a bit more. First we'll have
a look at the basic functions, the Lua side of the game.
We load an xml le as follows (the document namespace is predened in ConTEXt):
\startluacode
document.xml = document.xml or { } -- define namespace
document.xml = xml.load("mk-xml.xml") -- load the file
\stopluacode
The loader constructs a table representing the document structure, including whitespace,
so let's serialize the code and see what shows up:
\startluacode
tex.sprint("\\starttyping")
xml.serialize(document.xml, tex.sprint)
tex.sprint("\\stoptyping")
\stopluacode
We can control the wat the serializer deals with the snippets, here we just print back to
TEX.