Hi,

I am if/how XSLT can be extended by C. For example, if i have a simple c program (say convert.exe) which takes an integer value on the command line and returns twice its value.

Is it possible to call this program within a transformation (obviously the program i intend to call does a little more than just double values!).

Any ideas?

The answer is - it depends on the particular XSL processor.

The XSLT1 recommendation supports function and element
extensions but not all processors implement extensions
and even fewer allow the user to roll their own.

One processor that allows extensions written in C is libxslt
(www.libxslt.org)