#!/bin/bash

# sanity check: do we have the required argument ?
if (( $# != 1 ))
then
 echo "Wrong number of parameters in $0 !!!"
 echo " Usage:"
 echo "  $0 num"
 echo " where num is the number of scatterers"
 exit
fi

filename=scatterers.$1

if [ ! -f $filename ] ; then
# if the file doesn't exist, we create it
cat << EOF > $filename
!-----------------------------------------------------------------------
!   INCLUDE 'scatterers.h'
!
! Number of radiatively active species 
! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
!
!-----------------------------------------------------------------------

      integer, parameter :: naerkind=$1

!-----------------------------------------------------------------------
EOF

else
 echo "$filename already exists!"
fi

# remove 'old' scatterers.h file and replace it with new one
\rm -f ../scatterers.h
tar cf - $filename | ( cd .. ; tar xf - ; mv $filename scatterers.h )
# line above is a trick to preserve time of creation of scatterers.# files