Help with GDL to SQL scripts

Hi to everyone, i want ask if someone knows about a script/program to convert the .gdl (Interbase) to .sql scripts. I wrote a little script to make it but it's very very simple, and the triggers and some code from .gdl are so difficult to me. If somebody could help me, I would very thankful.

This is my script, only change a few reserved words.

if test -z "$1";
then
  echo "Use : gdl2sql <script.gdl>"
  exit;
fi

#cp $1 $1.back
cat $1 | sed 's/define database/CREATE DATABASE/g' | sed 's/define field/CREATE DOMAIN/g' > $1.sql
cat $1.sql | sed 's/missing_value is/DEFAULT/g' | sed 's/define relation/CREATE TABLE/g'  > $1.sql
cat $1.sql | sed 's/short/INT/g' | sed 's/char /CHAR/g' | sed 's/long scale -2/NUMERIC(15,2)/g' > $1.sql
cat $1.sql | sed '/security_class/d' | sed 's/date/DATE/g' > $1.sql
cat $1.sql | sed 's/valid if/CHECK/g' | sed '/query_header/d' | sed '/edit_string/d' > $1.sql
cat $1.sql | sed 's/\[/\(/g' | sed 's/\]/\)/g' | sed 's/varying/VARCHAR/g' > $1.sql

cat $1.sql | sed 's/define index/CREATE INDEX/g' | sed 's/define trigger/CREATE TRIGGER/g' > $1.sql

cat $1.sql

This is a sample code from the .gdl script

/* This is a trigger */
define trigger POSTSTOREDETREL for RELATIONS_DETAIL
        post store 0:
begin
  for a in RELATIONS with a.relation = new.relation
  modify a using
    a.import = a.import + new.import;
  end_modify;
  end_for;
end;


/* This is a index */ 
define index MOVPOLMONTHYEAR for MOVEMENTS
        TICKET,
        MONTH,
        YEAR;


/* This is a table */
define relation REINGRESO_TICKES
    TICKET     position 1,
    DATE_TICKET       position 2,
    REFERENCE  position 3,
    CAPTURE_DATE       position 4,
    USER     position 5;


/* This is a domain */
define field IMPORT long scale -2;