#!/bin/sh
#------------------------------------------------------------------------------
# =========                 |
# \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
#  \\    /   O peration     |
#   \\  /    A nd           | www.openfoam.com
#    \\/     M anipulation  |
#------------------------------------------------------------------------------
#     Copyright (C) 2011-2016 OpenFOAM Foundation
#------------------------------------------------------------------------------
# License
#     This file is part of OpenFOAM, distributed under GPL-3.0-or-later.
#
# Script
#     foamCopySettings
#
# Description
#     Usage: foamCopySettings srcDir dstDir
#
#     Copy OpenFOAM settings from one case to another, without copying
#     the mesh or results
#     - requires rsync
#
# Note
#     The foamCopySettings.rc (found via foamEtcFile) can be used to add any
#     custom rsync options.
#------------------------------------------------------------------------------
Script=${0##*/}

#------------------------------------------------------------------------------
usage() {
    exec 1>&2
    while [ "$#" -ge 1 ]; do echo "$1"; shift; done
    cat <<USAGE

Usage: $Script srcDir dstDir

    Copy OpenFOAM settings from one case to another, without copying
    the mesh or results.
    - requires rsync

Note
    The $Script.rc (found via foamEtcFile) can be used to add any
    custom rsync options.

USAGE
    exit 1
}
#------------------------------------------------------------------------------

# parse options
while [ "$#" -gt 0 ]
do
    case "$1" in
    -h | -help*)
        usage
        ;;
    -*)
        usage "unknown option: '$*'"
        ;;
    *)
        break
        ;;
    esac
done

# need rsync
type rsync >/dev/null 2>&1 || usage "Error: 'rsync' seems to be missing"

[ "$#" -eq 2 ] || usage "Error: incorrect number of arguments"

srcDir=${1%/}
dstDir=${2%/}

for i in $srcDir $dstDir
do
    [ -d "$i" ] || { echo "Error: directory '$i' does not exist"; exit 1; }
done

# check that the srcDir looks okay
for i in $srcDir/constant $srcDir/system
do
    if [ ! -d "$i" ]
    then
        echo "Error: no '${i##*/}' directory in '$srcDir'"
        echo "       does not appear to be an OpenFOAM case"
        exit 1
    fi
done

# files and directories to copy
# avoid processor directories here too to make for cleaner output
fileList=$(find -H $srcDir -mindepth 1 -maxdepth 1 -not -name "processor*")

# avoid polyMesh and processor* directories
rsync="rsync --exclude polyMesh --exclude processor*"

#
# get any extra user options
# extract lines starting with '--longOption'
#
if rcFile=$(foamEtcFile $Script.rc)
then
    rsync="$rsync "$(sed -ne '/^ *--/p' $rcFile | tr '\n' ' ')
fi


# TODO:
#  - verify that it works with multiple mesh regions
#  - special treatment for starting with negative crank angles


echo
echo "synchronizing with"
echo "    $rsync"
echo

for i in $fileList
do
    name="${i##*/}"
    # skip numerical (results) directories (except 0)
    # and things that look like log files or queuing system output
    case "$name" in
    ( [1-9] | [0-9]?* | log | *.log | foam.[eo][1-9]* )
        echo "$i  [skipped]"
        continue
        ;;
    # skip things that look sampled directories and converted data
    ( probes | sets | surfaces | En[Ss]ight )
        echo "$i  [skipped]"
        continue
        ;;
    (*)
        echo "$i -> $dstDir/$name"
        $rsync -a $i $dstDir
        ;;
    esac
done

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