So you think that the easier way is to convert
to collada and after i should use ruby script to
manipulate it?

You mean export to collada files?

But it not in format approprite and i need to convert it
can I use script ruby to convert it?

I'd seen also su2kt it convert to XML file

I need to export information like size , position materiel ...

I need plugin to export google sketchup file to XML format appropriate to a data of other software

Ruby script or Ruby extensions written in C\C++ can export google sketchup file to other software that accept only xml file?

What difference between file exported to format Collada
and files exported by script SU2KT ?

I don' t mean collada.

I need ton covert to format XML and in appropriate format of another software.

I need to convert file google sketchup .skp into XML.
I have some idéa to use script ruby and i need your
help if you know others solutions

thanks