#!/bin/sh
#                      crc_setupsrc
#                     -------------
# Description:
#   Link files into a local src directory
#   Also link script files from the bin directory ==> should be renamed
#
# CVS:
#   $Id: crc_setupsrc 12756 2009-12-30 20:15:51Z AxelBrandenburg $
#
# Usage:
#   crc_setupsrc [options] [src-dir]
# Options:
#   --crayon-home <dir>   Specify the root path of the Crayon Code directory
#
IAM=$0
#
link_scripts()
{
  echo "Linking job submission/execution scripts."
  to_link=
  for script in $scripts
  do
    if [ -f $bindir/$script ]; then
      [ -h ./$script ] && rm -f $script
      [ ! -f ./$script ] && to_link="$to_link $bindir/$script"
    else
      echo "No such file: $bindir/$script"
    fi
  done
  [ "$to_link" ] && ln -s $to_link .
}
#
link_root_makefile()
{
## Make a link to a root Makefile to allow make from the run directory
  [ -h Makefile ] && rm -f Makefile
  [ ! -f Makefile ] && ln -s $srcdir/Makefile.parent Makefile
  echo Linked root Makefile.
}
#
#-----------------------------------------------------------------------------
make_src_dir()
{
## src subdirectory
  if [ ! -d $src ]; then
    echo "No src directory found: creating new one (`pwd`/src)."
    mkdir $src
  fi
}
#
link_src_files()
{
#
#  LINK all *.f90, *.f, and the Makefile to local src directory
#
  echo "Linking files in '$src'."
  old_dir="`pwd`"
  cd $src
  n=0
  to_link=
  for file in $srcdir/*.f90 $srcdir/*.f $srcdir/*.c \
              $srcdir/Makefile.src $srcdir/Makefile.depend \
              $srcdir/*.h $srcdir/scripts $srcdir/.cvsignore
  do
    if [ -f $file ] || [ -d $file ]; then
      if [ -h "`basename $file`" ]; then
        rm -f "`basename $file`"
        to_link="$to_link $file"
        #ln -s $file .
      elif [ -f "`basename $file`" ] \
        || [ -d "`basename $file`" ]; then
        n="`expr $n + 1`"
        existf="$existf`basename $file` "
      else
        to_link="$to_link $file"
        #ln -s $file .
      fi
    else
      echo "No such file: $file"
    fi
  done
  [ "$to_link" ] && ln -s $to_link .
  cd $old_dir
}
#
#-----------------------------------------------------------------------------
make_special_dir()
{
## src subdirectory
  [ -h $src/special ] && rm $src/special
  if [ ! -d $src/special ]; then
    echo "No special directory found: creating new one (`pwd`/src/special)."
    mkdir $src/special
  fi
}
#
link_special_files()
{
#
#  LINK all *.f90, *.f, and the Makefile to local src directory
#
  echo "Linking files in '$src/special'."
  old_dir="`pwd`"
  cd $src/special
  n=0
  to_link=
  for file in $srcdir/special/*.f90
  do
    if [ -f $file ] || [ -d $file ]; then
      if [ -h "`basename $file`" ]; then
        rm -f "`basename $file`"
        to_link="$to_link $file"
        #ln -s $file .
      elif [ -f "`basename $file`" ] \
        || [ -d "`basename $file`" ]; then
        n="`expr $n + 1`"
        existf="$existf`basename $file` "
      else
        to_link="$to_link $file"
        #ln -s $file .
      fi
    else
      echo "No such file: $file"
    fi
  done
  [ "$to_link" ] && ln -s $to_link .
  cd $old_dir
}
#
#-----------------------------------------------------------------------------
make_inactive_dir()
{
## src subdirectory
  [ -h $src/inactive ] && rm $src/inactive
  if [ ! -d $src/inactive ]; then
    echo "No inactive directory found: creating new one (`pwd`/src/inactive)."
    mkdir $src/inactive
  fi
}
#
link_inactive_files()
{
#
#  LINK all *.f90, *.f, and the Makefile to local src directory
#
  echo "Linking files in '$src/inactive'."
  old_dir="`pwd`"
  cd $src/inactive
  n=0
  to_link=
  for file in $srcdir/inactive/*.f90
  do
    if [ -f $file ] || [ -d $file ]; then
      if [ -h "`basename $file`" ]; then
        rm -f "`basename $file`"
        to_link="$to_link $file"
        #ln -s $file .
      elif [ -f "`basename $file`" ] \
        || [ -d "`basename $file`" ]; then
        n="`expr $n + 1`"
        existf="$existf`basename $file` "
      else
        to_link="$to_link $file"
        #ln -s $file .
      fi
    else
      echo "No such file: $file"
    fi
  done
  [ "$to_link" ] && ln -s $to_link .
  cd $old_dir
}
#
#-----------------------------------------------------------------------------
make_experimental_dir()
{
## src subdirectory
  [ -h $src/experimental ] && rm $src/experimental
  if [ ! -d $src/experimental ]; then
    echo "No experimental directory found: creating new one (`pwd`/src/experimental)."
    mkdir $src/experimental
  fi
}
#
link_experimental_files()
{
#
#  LINK all *.f90, *.f, and the Makefile to local src directory
#
  echo "Linking files in '$src/experimental'."
  old_dir="`pwd`"
  cd $src/experimental
  n=0
  to_link=
  for file in $srcdir/experimental/*.f90
  do
    if [ -f $file ] || [ -d $file ]; then
      if [ -h "`basename $file`" ]; then
        rm -f "`basename $file`"
        to_link="$to_link $file"
        #ln -s $file .
      elif [ -f "`basename $file`" ] \
        || [ -d "`basename $file`" ]; then
        n="`expr $n + 1`"
        existf="$existf`basename $file` "
      else
        to_link="$to_link $file"
        #ln -s $file .
      fi
    else
      echo "No such file: $file"
    fi
  done
  [ "$to_link" ] && ln -s $to_link .
  cd $old_dir
}
#
#-----------------------------------------------------------------------------
make_initial_condition_dir()
{
## src subdirectory
  [ -h $src/initial_condition ] && rm $src/initial_condition
  if [ ! -d $src/initial_condition ]; then
    echo "No initial_condition directory found: creating new one (`pwd`/src/initial_condition)."
    mkdir $src/initial_condition
  fi
}
#
link_initial_condition_files()
{
#
#  LINK all *.f90, *.f, and the Makefile to local src directory
#
  echo "Linking files in '$src/initial_condition'."
  old_dir="`pwd`"
  cd $src/initial_condition
  n=0
  to_link=
  for file in $srcdir/initial_condition/*.f90
  do
    if [ -f $file ] || [ -d $file ]; then
      if [ -h "`basename $file`" ]; then
        rm -f "`basename $file`"
        to_link="$to_link $file"
        #ln -s $file .
      elif [ -f "`basename $file`" ] \
        || [ -d "`basename $file`" ]; then
        n="`expr $n + 1`"
        existf="$existf`basename $file` "
      else
        to_link="$to_link $file"
        #ln -s $file .
      fi
    else
      echo "No such file: $file"
    fi
  done
  [ "$to_link" ] && ln -s $to_link .
  cd $old_dir
#
#-----------------------------------------------------------------------------
#  Local initial condition subroutines can be saved in initial_condition
#  folder in run directory.
#
  if [ -d "$old_dir/initial_condition" ]; then
    echo "Linking files in '$old_dir/initial_condition'."
    ln -fs $old_dir/initial_condition/* $src/initial_condition/
  fi
}
#
create_Makefile_inc()
{
#
#  Create empty src/Makefile.inc, so `make' does not complain about its
#  absence when run for the first time
#
  printf "# %s\n" "Empty" "(This file was written by 'crc_setupsrc')" \
      > src/Makefile.inc
}
#
copy_local_files()
{
#
#  COPY all *.local files into local src directory
#
  echo "Creating .local files in $src (if necessary)."
  old_dir="`pwd`"
  cd $src
  n=0
  to_copy=
  for file in $srcdir/*.local
  do
    if [ -f $file ]; then
      if [ ! -f "`basename $file`" ]; then
# Warn user about copying *.local, as these should normally come
# with each run directory:
        echo "Copying default file $file to src/ -- are you sure this is OK?"
        to_copy="$to_copy $file"
        #cp $file .
      else
        # echo "`basename $file` already exists"
        n="`expr $n + 1`"
        existf="$existf`basename $file` "
      fi
    else
      echo "No such file: $file"
    fi
  done
  [ "$to_copy" ] && cp $to_copy .
  cd $old_dir
}
#
print_status()
{
  [ $n -eq 1 ] &&  echo "$existf already existed in $src"
  [ $n -gt 1 ] && echo "$n files already existed in $src"
}
#
remove_broken_links()
{
## Remove any broken links...
  find . $src -type l 2>/dev/null | perl -lne 'unlink $_ if (-l && ! -e)'
}
#
prepare_for_compile()
{
#
#  Generate Makefile
#
  echo "Rebuilding Makefile from Makefile.src."
  old_dir="`pwd`"
  cd $src
  rm -f Makefile                        # for old run directories
  rm -f makefile                        # for old run directories
  $srcdir/scripts/adapt-mkfile Makefile.src Makefile
  cd $old_dir
}
#
scripts="start.csh start_run.csh run.csh getconf.csh"
crayon_home_path=$CRAYON_HOME
src="`pwd`/src"
#
while [ $# -gt 0 ]
do
  case $1 in
  -h)
    . $crayon_home_path/lib/sh/functions.sh
    usage_from_header $IAM
    exit 1
  ;;
  -?)
    . $crayon_home_path/lib/sh/functions.sh
    usage_from_header $IAM
    exit 1
  ;;
  --help)
    . $crayon_home_path/lib/sh/functions.sh
    usage_from_header $IAM
    exit 1
  ;;
  --crayon-home)
    crayon_home_path=$2
    shift
  ;;
  --)
    shift
    break
  ;;
  *)
    if [ $specified_src ]; then
      echo UNRECOGNISED PARAMETER
      usage_from_header $IAM
      exit 1
    fi
    src=$1
  ;;
  esac
  shift
done
#
. $crayon_home_path/lib/sh/functions.sh
#
if [ ! "$crayon_home_path" ]; then
  echo " You need to provide the path to the Crayon Code, either via the"
  echo " --crayon-home option or you need to set CRAYON_HOME; "
  echo " consider sourcing sourceme.{,c}sh"
  exit 1
fi
#
bindir=$crayon_home_path/bin
srcdir=$crayon_home_path/src
#
echo "Files will be linked to the root code directory '$crayon_home_path'."
#
remove_broken_links
link_scripts
link_root_makefile
make_src_dir
link_src_files
#make_special_dir
#link_special_files
make_inactive_dir
link_inactive_files
#make_experimental_dir
#link_experimental_files
make_initial_condition_dir
link_initial_condition_files
create_Makefile_inc
#copy_local_files
print_status
prepare_for_compile