#! /bin/bash
#*******************************************************************************
# 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: python,v 1.7 2010/08/11 03:56:12 agrimstrup Exp $"
#
# who       when      what
# --------  --------  ----------------------------------------------
# agrimstrup  2009-09-28  created
#

# We have to process the set of Python command line arguments
# in order to properly mimic the behaviour of the tools we
# are wrapping

function get_args {
   local OPTIMIZE=
   local VERBOSITY=
   local PYTHONARGS=""
   local CMDSTR=

   while getopts ":c:dEhim:OQ:StuvVW:x-:" flag
   do
      case $flag in
      c)
         PYTHONARGS="$PYTHONARGS-c "
         CMDSTR=$OPTARG
         break
         ;;
      m) 
         PYTHONARGS="$PYTHONARGS-$flag $OPTARG "
         break
         ;;
      V|h) 
         PYTHONARGS="$PYTHONARGS-$flag "
         break
         ;;
      Q|W) 
         PYTHONARGS="$PYTHONARGS-$flag $OPTARG "
         ;;
      O)
         if [[ -z $OPTIMIZE ]]
         then 
            OPTIMIZE="-O"
         else
            OPTIMIZE="-OO"
         fi 
         ;;
      v)
         if [[ -z $VERBOSITY ]]
         then 
            VERBOSITY="-v"
         else
            VERBOSITY="${VERBOSITY}v"
         fi 
         ;;
      d|E|i|S|t|u|x)
         PYTHONARGS="$PYTHONARGS-$flag "
         ;;
      -)
         PYTHONARGS="--$OPTARG"
         ;;
      :)
         PYTHONARGS="-h"
         break
         ;;
      esac
   done

   if [[ ! -z $OPTIMIZE ]]
   then
      PYTHONARGS="$OPTIMIZE $PYTHONARGS"
   fi

   if [[ ! -z $VERBOSITY ]]
   then
      PYTHONARGS="$VERBOSITY $PYTHONARGS"
   fi

   if [ ! -z "$CMDSTR" ]
   then
      PYINTRARGS=$PYTHONARGS
      PYCMDSTR=$CMDSTR
   else
      PYINTRARGS=$PYTHONARGS
      PYCMDSTR=
   fi
}

function select_intr {
	PYTHONSHELL="exec $PYTHON_ROOT/bin/python"
}

function start_intr {

   # Now that the environment is set, the interpreter can
   # be started.
   if [ "X" = "$1X" ]
   then
      # No script provided so the interpreter is launched
      if [ ! -z "$PYCMDSTR" ]
      then  
         $PYTHONSHELL $PYINTRARGS "$PYCMDSTR"
      else
         $PYTHONSHELL $PYINTRARGS
      fi     
   else
      # A script is to be run in the interpreter
      if [ -e $1 ]
      then
         # Run the file from the current directory
         $PYTHONSHELL $PYINTRARGS "$@"
      else
         # Use the interpreter to override the Python
         # interpreter line given in an executable script
         SCRIPT=`which $1 2>/dev/null`
         if [ "X" = "X$SCRIPT" ]
         then
            echo "$1 not found!"
         else
            shift
            $PYTHONSHELL $PYINTRARGS $SCRIPT "$@"
         fi
      fi
   fi

}

if [ -z "$TEST_MODE" ]
then
   # Extract the interpreter arguments from the command line
   get_args "$@"
   shift $(($OPTIND-1))

   # Pick the interpreter to be run
   select_intr

   start_intr "$@"
fi

#
# ___oOo___