#!/bin/sh
#------------------------------------------------------------------------------
# =========                 |
# \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
#  \\    /   O peration     |
#   \\  /    A nd           | Copyright (C) 1991-2008 OpenCFD Ltd.
#    \\/     M anipulation  |
#-------------------------------------------------------------------------------
# License
#     This file is part of OpenFOAM.
#
#     OpenFOAM is free software; you can redistribute it and/or modify it
#     under the terms of the GNU General Public License as published by the
#     Free Software Foundation; either version 2 of the License, or (at your
#     option) any later version.
#
#     OpenFOAM 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 General Public License
#     for more details.
#
#     You should have received a copy of the GNU General Public License
#     along with OpenFOAM; if not, write to the Free Software Foundation,
#     Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#
# Script
#     wmakeLnInclude
#
# Description
#     Link all the source files in the <dir> directory into <dir>/lnInclude
#
#     Usage: wmakeLnInclude [-f] <dir> [-lnOption]
#
#     The desired source files:
#         *.C *.H *.h *.cpp *.cxx *.hpp *.hxx
#
#     Avoid
#         *.c (C source)
#         .#* (cvs recovered files)
#------------------------------------------------------------------------------
Script=${0##*/}

usage() {
   while [ "$#" -ge 1 ]; do echo "$1"; shift; done
   cat<<USAGE

usage: $Script [-f] <dir> [-lnOption]

    Link all the source files in the <dir> into <dir>/lnInclude
    * Use '-f' to force an update when the lnInclude directory already exists.

USAGE
   exit 1
}

#------------------------------------------------------------------------------

# simple option parsing
unset forceUpdate
unset findOpt

# simple parse options
while [ "$#" -gt 0 ]
do
   case "$1" in
   -h | -help)   # provide immediate help
      usage
      ;;
   -f)
      shift
      forceUpdate=1
      ;;
   -*)
      usage "unknown option/argument: '$*'"
      ;;
   *)
      break
      ;;
   esac
done

baseDir=$1
incDir=$baseDir/lnInclude

if [ $# -eq 1 ]
then
   lnOpt="-s"
elif [ $# -eq 2 ]
then
   lnOpt="$2"
else
   usage "ERROR: wrong number of arguments"
fi


if [ ! -d $baseDir ]
then
   echo $Script: Base directory $baseDir does not exist, exiting.
   exit 2
fi

if [ -d $incDir ]
then
   # could change force to remove lnInclude first
   if [ ! "$forceUpdate" ]
   then
      # echo $Script: include directory $incDir already exists, exiting.
      exit 0
   fi
else
   mkdir $incDir
fi

if [ ! -d $incDir ]
then
   echo $Script: failed to create include directory $incDir
   exit 0
fi


# Link include files
# ~~~~~~~~~~~~~~~~~~
echo $Script: linking include files to $incDir
echo

cd $incDir

find .. $findOpt \
    \( -name lnInclude -o -name -Make -o -name config \) -prune  \
 -o \( -name '*.[CHh]' -o -name '*.[ch]xx' -o -name '*.[ch]pp' -o -name '*.type' \)  \
 -a ! -name ".#*"     \
 -exec ln $lnOpt {} . \;


#
# remove any broken links
#
find -L . -type l -exec rm \{\} \;

#------------------------------------------------------------------------------