Converting PL/SQL to PL/PGSQL

Hi all!

I have to convert functions and procedures from Oracle to PostgreSQL. I 
looked at all the stuff of the Pg-Homepage and I ask me if there are any 
tools, that support the conversion. 

Writing PS/PGSQL tools seems to be a bit hard, because of the existing 
tool-infrastructure on linux. Are there are tools I have overseen?

I have implemented the following tools for my use yet:

- A WWWdb-Application for editing and testing of SQL-Procedures over a
  WEB-frontend
- A perl-script, that does basic conversions between PL/SQL <-> XML <->
  PL/PGSQL (The Procedure-definition is converted completely, the code-block
  a little bit)

Who else is working in this area? Any tips?

Regards, Klaus