#! /bin/sh
#*******************************************************************************
# ALMA - Atacama Large Millimiter Array
# (c) National Research Council of Canada, 2009 
# 
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
# 
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# Lesser General Public License for more details.
# 
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA
#
# "@(#) $Id: acsutilCASAPython,v 1.1 2009/09/17 20:31:03 agrimstrup Exp $"
#
# who       when      what
# --------  --------  ----------------------------------------------
# agrimstrup  2009-09-08  created
#

# CASA_ROOT is set when .bash_profile.acs detects that CASA
# has been installed on the machine.  Since we are trying to
# run a CASA-provided Python interpreter with this script, 
# there is no point in continuing if CASA isn't installed.
if [ X"$CASA_ROOT" = X ]
then
   echo "CASA needs to be installed on this machine."
   exit 0
fi

# CASA requires the tk.tcl file from the TCL libraries it
# provides
export TCL_LIBRARY=$CASA_ROOT/share/tcl8.4

# Access to ACS-supplied modules may still be necessary so
# the PYTHONPATH has to include both the CASA and ACS
# site-package directories.  This is true for some shared
# libraries as well.  CASA is given priority in the
# ordering.
if [[ ! "$PYTHONPATH" =~ ".*$CASA_ROOT" ]]
then
    PYTHONPATH=`acsutilCASAPathInsert PYTHONPATH`
fi
if [[ ! "$LD_LIBRARY_PATH" =~ ".*$CASA_ROOT" ]]
then
    LD_LIBRARY_PATH=`acsutilCASAPathInsert LD_LIBRARY_PATH`
fi

# Now that the environment is set, the interpreter can
# be started.
if [ "X" = "$1X" ]
then
   # No arguments provided so CASA's interpreter is launched
   $CASA_ROOT/lib/casapy/bin/python
else
   # A script is to be run in CASA's interpreter
   if [ -e $1 ]
   then
      # Run the file from the current directory
      $CASA_ROOT/lib/casapy/bin/python $@
   else
      # Use the CASA interpreter to override the Python
      # interpreter line given in an executable script
      SCRIPT=`which $1`
      if [ "X" = "$SCRIPTX" ]
      then
         echo "$1 not found!"
      else
         shift
         $CASA_ROOT/lib/casapy/bin/python $SCRIPT $@
      fi
   fi
fi

# Clean up the CASA-specific setting
unset TCL_LIBRARY

#
# ___oOo___
