#----------------------------------*-sh-*--------------------------------------
# =========                 |
# \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
#  \\    /   O peration     |
#   \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
#    \\/     M anipulation  | Copyright (C) 2016-2017 OpenCFD Ltd.
#------------------------------------------------------------------------------
# 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 3 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, see <http://www.gnu.org/licenses/>.
#
# File
#     etc/config.sh/unset
#
# Description
#     Clear as many OpenFOAM environment settings as possible
#
#------------------------------------------------------------------------------

# Clean standard environment variables (PATH, LD_LIBRARY_PATH, MANPATH)
foamClean=$WM_PROJECT_DIR/bin/foamCleanPath
[ -f "$foamClean" -a -x "$foamClean" ] || unset foamClean

# The old dirs to be cleaned from the environment variables
foamOldDirs="$WM_PROJECT_DIR $WM_THIRD_PARTY_DIR \
    $HOME/$WM_PROJECT/$USER $FOAM_USER_APPBIN $FOAM_USER_LIBBIN \
    $WM_PROJECT_SITE $FOAM_SITE_APPBIN $FOAM_SITE_LIBBIN $ParaView_DIR"

#------------------------------------------------------------------------------
# Unset WM_* environment variables

unset WM_ARCH
unset WM_ARCH_OPTION
unset WM_CC
unset WM_CFLAGS
unset WM_COMPILER
unset WM_COMPILER_TYPE
unset WM_COMPILER_LIB_ARCH
unset WM_COMPILE_OPTION
unset WM_CXX
unset WM_CXXFLAGS
unset WM_DIR
unset WM_HOSTS
unset WM_LABEL_OPTION
unset WM_LABEL_SIZE
unset WM_LDFLAGS
unset WM_LINK_LANGUAGE
unset WM_MPLIB
unset WM_NCOMPPROCS
unset WM_OPTIONS
unset WM_OSTYPE
unset WM_PRECISION_OPTION
unset WM_PROJECT
unset WM_PROJECT_DIR
unset WM_PROJECT_INST_DIR
unset WM_PROJECT_SITE
unset WM_PROJECT_USER_DIR
unset WM_PROJECT_VERSION
unset WM_SCHEDULER
unset WM_THIRD_PARTY_DIR


#------------------------------------------------------------------------------
# Unset FOAM_* environment variables

unset FOAM_APPBIN
unset FOAM_APP
unset FOAM_CODE_TEMPLATES
unset FOAM_ETC
unset FOAM_EXT_LIBBIN
unset FOAM_INST_DIR
unset FOAM_JOB_DIR
unset FOAM_LIBBIN
unset FOAM_MPI
unset FOAM_RUN
unset FOAM_SETTINGS
unset FOAM_SIGFPE
unset FOAM_SIGNAN
unset FOAM_SITE_APPBIN
unset FOAM_SITE_LIBBIN
unset FOAM_SOLVERS
unset FOAM_SRC
unset FOAM_TUTORIALS
unset FOAM_USER_APPBIN
unset FOAM_USER_LIBBIN
unset FOAM_UTILITIES


#------------------------------------------------------------------------------
# Unset MPI-related environment variables

unset MPI_ARCH_PATH
unset MPI_BUFFER_SIZE

# Undefine OPAL_PREFIX if set to one of the paths on foamOldDirs
if [ -z "$($foamClean "$OPAL_PREFIX" "$foamOldDirs")" ]
then
    unset OPAL_PREFIX
fi


#------------------------------------------------------------------------------
# Unset Ensight/ParaView-related environment variables

unset ENSIGHT9_READER
unset ParaView_DIR
unset ParaView_INCLUDE_DIR
unset ParaView_MAJOR
unset ParaView_VERSION
unset PV_PLUGIN_PATH
unset VTK_DIR

#------------------------------------------------------------------------------
# unset other ThirdParty environment variables

unset ADIOS_ARCH_PATH
unset BOOST_ARCH_PATH
unset CCMIO_ARCH_PATH
unset CGAL_ARCH_PATH
unset FFTW_ARCH_PATH
unset GPERFTOOLS_ARCH_PATH
unset GMP_ARCH_PATH
unset MPFR_ARCH_PATH
unset MESA_ARCH_PATH
unset METIS_ARCH_PATH
unset SCOTCH_ARCH_PATH

#------------------------------------------------------------------------------
# Cleanup environment
# PATH, LD_LIBRARY_PATH, MANPATH

if [ -n "$foamClean" ]
then
    cleaned=$($foamClean "$PATH" "$foamOldDirs") && PATH="$cleaned"
    cleaned=$($foamClean "$LD_LIBRARY_PATH" "$foamOldDirs") && LD_LIBRARY_PATH="$cleaned"
    cleaned=$($foamClean "$MANPATH" "$foamOldDirs") && MANPATH="$cleaned"
fi

[ -n "$LD_LIBRARY_PATH" ] || unset LD_LIBRARY_PATH
[ -n "$LD_PRELOAD" ] || unset LD_PRELOAD
[ -n "$MANPATH" ] || unset MANPATH

#------------------------------------------------------------------------------
# Cleanup aliases and functions

unalias wmSet       2>/dev/null
unalias wmInt32     2>/dev/null
unalias wmInt64     2>/dev/null
unalias wmSP        2>/dev/null
unalias wmDP        2>/dev/null

unalias wmUnset     2>/dev/null

unalias wmSchedOn   2>/dev/null
unalias wmSchedOff  2>/dev/null

unalias foam        2>/dev/null
unalias foamSite    2>/dev/null

unalias src         2>/dev/null
unalias lib         2>/dev/null
unalias app         2>/dev/null
unalias sol         2>/dev/null
unalias util        2>/dev/null
unalias tut         2>/dev/null
unalias run         2>/dev/null

unset -f wmRefresh  2>/dev/null
unset -f foamVersion 2>/dev/null
unset -f foamPV     2>/dev/null

# Cleanup bash completions, which look like this:
#     "complete ... -F _of_APPNAME APPNAME
# For economy, obtain list first but also add in 'filter_opts' helper
foamClean="$(complete 2>/dev/null | sed -n -e 's/complete.*-F _of_.* \(..*\)$/\1/p')"
for cleaned in $foamClean filter_opts
do
    unset -f _of_$cleaned 2>/dev/null
    complete -r $cleaned  2>/dev/null
done


#------------------------------------------------------------------------------
# Intermediate variables (do as last for a clean exit code)

unset cleaned foamClean foamOldDirs

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