#!/bin/sh
#------------------------------------------------------------------------------
# =========                 |
# \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
#  \\    /   O peration     |
#   \\  /    A nd           | Copyright (C) 2009-2010 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 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/>.
#
# Script
#     org-batch
#
# Description
#     Batch process emacs org-mode files to create html/LaTeX etc.
#
#------------------------------------------------------------------------------
Script=${0##*/}

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

Usage: ${0##*/} [OPTIONS] file1 [.. fileN]
options:
  -html      create html (default)
  -latex     create LaTeX
  -pdflatex  create pdf via pdflatex

* Batch process emacs org-mode files to create html/LaTeX etc.

USAGE
    exit 1
}


# default is html export:
mode=html
unset makePDF

echo "have $Script"
case $Script in
*pdflatex)
    mode=latex
    makePDF=pdflatex
    ;;
*latex)
    mode=latex
    ;;
*html)
    mode=html
    ;;
esac

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

# default is the current directory
[ "$#" -gt 0 ] || usage "No files specified"

type emacs >/dev/null 2>&1 || usage "No emacs found in PATH"


for org
do
    echo "Processing: $org"
    echo "----------"
    if [ -f "$org" ]
    then
        emacs --batch -l org --visit=$org \
              --funcall org-export-as-$mode-batch

        # post-processing step to create pdf
        case "$makePDF" in
        pdflatex)
            input="${org%.org}.tex"

            if [ -f "$input" ]
            then
                pdflatex "$input"
            else
                echo "No $input to convert to pdf"
            fi
            ;;
        esac

    else
        echo "File not found"
    fi
    echo "----------"
done

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