Alain Frisch has released XStream, a small language for XML transformation.
"Transformations written in XStream are compiled into efficient
XML stream processors: the output is computed and produced while the
input is being parsed, which makes it possible to run some
transformations on very big XML documents which could not even fit in
memory.
Though XStream is mostly intended as a back-end for higher-level
languages, it is also possible to use it directly. The language
features ML-like pattern matching and higher-order functions, but no types."
The XStream compiler is distributed under the CeCILL
license. I haven't heard of that before, but apparently it's a specifically French free software license that's compaptible with the GPL.
