#----------------------------------*-sh-*--------------------------------------
# =========                 |
# \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
#  \\    /   O peration     |
#   \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
#    \\/     M anipulation  | Copyright (C) 2016 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/paraview
#
# Description
#     Setup file for paraview (& cmake)
#     Sourced from OpenFOAM-<VERSION>/etc/bashrc or from foamPV alias
#
#     If using system-wide installation for cmake, use the following settings:
#
#         cmake_version=cmake-system
#
# Note
#     The following env. variables are required for building plugins:
#         ParaView_DIR
#         ParaView_INCLUDE_DIR
#         PV_PLUGIN_PATH
#
#     If using a central installation not located under ThirdParty, you will
#     need to set some environment values directly. For example,
#
#         export ParaView_DIR=/opt/paraview/paraview-5.0.1
#         export ParaView_INCLUDE_DIR=$ParaView_DIR/include/paraview-5.0
#         export PV_PLUGIN_PATH=$FOAM_LIBBIN/paraview-5.0
#
#         export PATH=$ParaView_DIR/bin:$PATH
#         export LD_LIBRARY_PATH=$ParaView_DIR/lib/paraview-5.0:$LD_LIBRARY_PATH
#         unset ParaView_VERSION        # avoid using ThirdParty settings
#
#------------------------------------------------------------------------------

ParaView_VERSION=5.0.1
ParaView_MAJOR=detect                   # Automatically determine major version

cmake_version=cmake-system

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

# Clean the PATH
cleaned=$($WM_PROJECT_DIR/bin/foamCleanPath "$PATH" \
        "$ParaView_DIR \
         $WM_THIRD_PARTY_DIR/platforms/$WM_ARCH$WM_COMPILER/cmake- \
         $WM_THIRD_PARTY_DIR/platforms/$WM_ARCH$WM_COMPILER/paraview-" \
        ) \
        && PATH="$cleaned"

# Environment for ThirdParty cmake
unset CMAKE_HOME
cmake=$WM_THIRD_PARTY_DIR/platforms/$WM_ARCH$WM_COMPILER/$cmake_version
if [ -r $cmake ]
then
    export CMAKE_HOME=$cmake
    export CMAKE_ROOT=$cmake
    export PATH=$CMAKE_HOME/bin:$PATH
fi

# Evaluate command-line parameters for ParaView
_foamParaviewEval()
{
    while [ $# -gt 0 ]
    do
        case "$1" in
        ParaView*=*)
            # name=value  -> export name=value
            eval "export $1"
            ;;
        esac
        shift
    done
}

# Evaluate command-line parameters
_foamParaviewEval $@

# Require that ParaView_VERSION has not been unset.
# Avoids conflict with an alternative (non-ThirdParty) installation.
if [ -n "$ParaView_VERSION" ]
then

    # Set MAJOR version to correspond to VERSION
    # ParaView_MAJOR is "<digits>.<digits>" from ParaView_VERSION
    case "$ParaView_VERSION" in
    "$ParaView_MAJOR".* )
        # Version and major appear to correspond
        ;;

    [0-9]*)
        # Extract major from the version
        ParaView_MAJOR=$(echo $ParaView_VERSION | \
                       sed -e 's/^\([0-9][0-9]*\.[0-9][0-9]*\).*$/\1/')
        ;;
    esac

    pvName=ParaView-$ParaView_VERSION
    pvMajor=paraview-$ParaView_MAJOR
    pvSrcDir=$WM_THIRD_PARTY_DIR/$pvName

    export ParaView_DIR=$WM_THIRD_PARTY_DIR/platforms/$WM_ARCH$WM_COMPILER/$pvName

    # Set paths if binaries or source are present
    if [ -r $ParaView_DIR -o -r $pvSrcDir ]
    then
        pvLibDir=$ParaView_DIR/lib/$pvMajor
        pvPython=$ParaView_DIR/Utilities/VTKPythonWrapping

        export ParaView_INCLUDE_DIR=$ParaView_DIR/include/$pvMajor
        export PV_PLUGIN_PATH=$FOAM_LIBBIN/$pvMajor
        export PATH=$ParaView_DIR/bin:$PATH
        export LD_LIBRARY_PATH=$pvLibDir:$LD_LIBRARY_PATH

        # Add in python libraries if required
        if [ -r $pvPython ]
        then
            if [ "$PYTHONPATH" ]
            then
                export PYTHONPATH=$PYTHONPATH:$pvPython:$pvLibDir
            else
                export PYTHONPATH=$pvPython:$pvLibDir
            fi
        fi

        if [ "$FOAM_VERBOSE" -a "$PS1" ]
        then
            echo "Using paraview"
            echo "    ParaView_DIR         : $ParaView_DIR"
            echo "    ParaView_INCLUDE_DIR : $ParaView_INCLUDE_DIR"
            echo "    library dir          : $pvLibDir"
            echo "    PV_PLUGIN_PATH       : $PV_PLUGIN_PATH"
        fi
    else
        unset ParaView_DIR ParaView_INCLUDE_DIR PV_PLUGIN_PATH
    fi

fi

unset -f _foamParaviewEval
unset cleaned cmake cmake_version pvName pvMajor pvSrcDir pvLibDir pvPython
unset ParaView_VERSION ParaView_MAJOR

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