#!/bin/bash

dir=`/bin/pwd`
while [ ! \( -f "$dir/pytools/gl.py" -a -f "$dir/GRAAL_README" \) ]; do
    dir="$(dirname $dir)"
    if [ "$dir" = "/" ]; then 
        echo "Cannot find 'pytools/gl.py' in `/bin/pwd` or any of it's parents"
        exit 1
    fi
done

python <<END
import sys
major, minor, micro, _, _ = sys.version_info
if major != 2 or minor != 7:
    raise SystemExit('The gl.py script requires Python 2.7, not {0}.{1}.{2}'.format(major, minor, micro))
END
if [ $? -eq 0 ]; then
    exec python "$dir/pytools/gl.py" "$@"
fi