#!/bin/sh
#------------------------------------------------------------------------------
# =========                 |
# \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
#  \\    /   O peration     |
#   \\  /    A nd           | Copyright held by original author
#    \\/     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
#     foamUpdateCaseFileHeader
#
# Description
#     Updates the header of application files.
#     By default, writes current version in the header.
#     Alternatively version can be specified with -v option.
#     Also removes consecutive blank lines from file.
#
#------------------------------------------------------------------------------

#
# FUNCTIONS
#
printUsage () {
cat <<EOF
Usage: $0 <file>
    Updates the header of application files
    By default, writes current version in the header
    Alternatively version can be specified with -v option
    Also removes consecutive blank lines from file

Options are:
-v "<version>" specifies the version to be written in the header
-h         help
EOF
}

printOpenFOAMheader () {
cat<<EOF
/*--------------------------------*- C++ -*----------------------------------*\\
| =========                 |                                                 |
| \\\\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\\\    /   O peration     | Version:  ${1}                                   |
|   \\\\  /    A nd           | Web:      http://www.OpenFOAM.org               |
|    \\\\/     M anipulation  |                                                 |
\\*---------------------------------------------------------------------------*/
FoamFile
{
    version     2.0;
    format      ${2};
    class       ${3};
    object      ${4};
}
EOF
}

FoamFileAttribute () {
    grep $1 $2 | tr -s " " | cut -d" " -f3 | cut -d\; -f1
}

VERSION=$WM_PROJECT_VERSION
#
# OPTIONS
#
OPTS=`getopt hv: $*`
if [ $? -ne 0 ] ; then
    echo "Aborting due to invalid option"
    printUsage
    exit 1
fi
eval set -- '$OPTS'
while [ "$1" != "--" ]; do
    case $1 in
        -v) VERSION=$2; shift;;
        -h) printUsage; exit 1;;
    esac
    shift
done
shift

#
# MAIN
#
CASE_FILE=$1
if [ "`grep FoamFile $CASE_FILE`" ] ; then
    echo "Updating case file:" $CASE_FILE
    sed -n '/FoamFile/,/}/p' $CASE_FILE > FoamFile
    CLASS=`FoamFileAttribute class FoamFile`
    OBJECT=`FoamFileAttribute object FoamFile`
    FORMAT=`FoamFileAttribute format FoamFile`
    printOpenFOAMheader $VERSION $FORMAT $CLASS $OBJECT > temp
    sed '1,/}/d' $CASE_FILE | sed '/./,/^$/!d' >> temp
    mv temp $1
    rm FoamFile
else
    echo "The following file does not appear to be a case file:"
    echo "    " $CASE_FILE
fi


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