#!/bin/ksh
#  Neil Swart, spring 2017
#  Modifies the below to setup mulitple namelists for an mpi
#  based parallel rebuild based on rebuild_nemo_mpi.f90. Unlike
#  it's predecessor, this script no longer calls the actual
#  fortran executable at the end - that is left to the user.
#  This script only constructs the required namelists.
# 
#
#  The script creates the nam_rebuild namelist based upon
#  the command line options you give it (see usage below)
#
#  Ed Blockley, September 2011
#

#set -ax
usage ()
{
   echo
   echo "  MPI NEMO REBUILD"
   echo "  ****************"
   echo
   echo "  usage: ${0##*/} filebase_list ndomain"
   echo
   echo "filebase list is a list of basefile name enclosed in quotes."
   echo        ' e.g.:  "grid_t grid_u grid_v"' 
   echo
   echo " ndomain is the number of tiles that need to be rebuilt = pni x pnj"
   exit 1
}

shift $(expr ${OPTIND} - 1)

if [[ $# < 2 ]] ; then
   usage
fi

file=$1
ndomain=$2
DIM1=$3
DIM2=$4

if [[ -n ${DIM1} && -n ${DIM2} ]] ; then
   dim_str=" dims '${DIM1}','${DIM2}'"
   dims="dims='${DIM1}','${DIM2}'"
   echo ${dim_str} >> nam_rebuild
fi

fnum=00
for f in $file; do
  fnum=`echo $fnum|awk -F':' '{printf "%2.2d",$1}'`

cat > nam_rebuild${fnum} << EOC
   &nam_rebuild
   filebase='${f}'
   ndomain=${ndomain}
EOC

  if [[ -n ${dims} ]] ; then
     echo ${dims} >> nam_rebuild${fnum}
  fi
  if [[ -n ${NCHUNKSIZE} ]] ; then
     echo " nchunksize=${NCHUNKSIZE}" >> nam_rebuild${fnum}
  fi
  echo "/" >> nam_rebuild${fnum}

  fnum=$(( ${fnum} + 1 ))
done