#! /usr/bin/env bash
#
# $Header: /home/ubuntu/mnt/e9_copy/MITgcm_contrib/jmc_script/mk_options_list,v 1.2 2018/01/23 22:17:55 jmc Exp $
# $Name:  $

# generate list of CPP Options used in Fortran source files 
#                  arguments = list of Fortran source files

clean=1
listOpt='TTT.listOpt'
get_sd='options_get.sed'
sortsd='options_sort.sed'
tmpfil=TTT.$$
#echo $tmpfil

if [ $# -eq 0 ] ; then
  echo "Usage: `basename $0` {list_of_files}"
  echo "   generate list of CPP Options used in all the Fortran source files" 
  echo "   which are given in argument list {list_of_files}" 
  echo " or  : `basename $0` -clean"
  echo "   just clean-up temp files"
  exit
fi
if test $1 = '-clean' ; then
  LIST=`ls -C $get_sd $sortsd $listOpt 2>/dev/null` 
  #echo "LIST='$LIST'"
  if test "x$LIST" != x ; then
    echo " remove: $LIST" ; rm -f $LIST
  else
    echo " no file to remove"
  fi
  exit 
fi


if [ $clean -ge 3 ] ; then rm -f $get_sd $sortsd ; fi
if test -f $get_sd ; then ls -l $get_sd
else
cat <<EOF >> $get_sd
/^#.*\\\\ *$/{N
s/\\\\//
p
}
EOF
fi
if test -f $sortsd ; then ls -l $sortsd
else
cat <<EOF >> $sortsd
/^ccc /d
s/\/\*.*\*\///
s/^# *ifndef//
s/^# *ifdef//
s/^# *if//
s/^# *elif//
s/||//g
s/&&//g
s/(//g
s/)//g
s/defined//g
s/!//g
EOF
fi

rm -f $listOpt
for xx in $*
do
  echo "ccc start file: $xx -----------------" >> $listOpt
  sed -n '/^ .*\\ *$/p' $xx  | sed 's/\\ *$//' >> $listOpt
  echo "ccc above: between cont line | below: 1rst and last of cont line" >> $listOpt
  sed '/^ .*\\ *$/d' $xx  > $tmpfil
  sed -n -f $get_sd $tmpfil >>  $listOpt
  echo "ccc below: single line" >> $listOpt
  sed '/^# *e*l*if.*\\ *$/d' $tmpfil | sed -n '/^# *e*l*if/p' >> $listOpt
  echo "ccc end file: $xx   -----------------" >> $listOpt
  rm -f $tmpfil
done
LIST=`sed -f $sortsd $listOpt`
if [ $clean -ge 2 ] ; then 
  rm -f $listOpt
fi

for xx in $LIST
do
  echo $xx >> $tmpfil
done

echo "-- used CPP options:"
cat $tmpfil | sort | uniq
if [ $clean -ge 1 ] ; then rm -f $tmpfil ; fi