#!/bin/bash
# Make an ISO/Joliet compatible image from a CDR image on OS X
# Developed based on http://forums.macrumors.com/showthread.php?t=220740

APP=$(echo $0 | sed 's#^.*/##')

usage()
{
    echo "
$APP converts an image into ISO/Joliet compatible format suitable for
burning onto a CD/DVD and having it cross-compatible with Win32/OSX/*NIX

Usage: $APP [-o <output file>] <input file>
"
}

while getopts :ho: OPTION
do
    case $OPTION in
    h)
        # Help
        usage
        exit 0
        ;;

    o)
        # Output file
        OUTFILE=$OPTARG
        ;;

    :)
        # Missing required argument
        echo "$APP: Missing argument for option -$OPTARG" >&2
        exit 1
        ;;

    \?)
        # Invalid option
        echo "$APP: Invalid option: -$OPTARG" >&2
        exit 1
        ;;
    esac
done

# Shift away the options
shift $(($OPTIND - 1))

INFILE=$1

if [[ -z $INFILE ]]
then
    usage
    exit 1
fi

if [[ ! -r $INFILE ]]
then
    echo "$APP: Unable to read input file $INFILE" >&2
    exit 1
fi

if [[ -z $OUTFILE ]]
then
    OUTFILE=$(echo $INFILE | sed -E 's#\.[^\.]+$#\.iso#')
fi

echo "Input file = $INFILE"
echo "Output file = $OUTFILE"

hdiutil makehybrid -iso -joliet -o "$OUTFILE" "$INFILE"

exit $?