#!/bin/bash
######################################################################
#
#   random.sh -- Print letters of a greeting message in a random order
#   (e.g., rdodldrl!,,!).  The final output is printed out one
#   character per line. This might not have sense but it helps to
#   describe how recursive execution of sibling modules work.
#
#   Written by:
#   * Alain Reguera Delgado <al@centos.org.cu>, 2013
#
# Copyright (C) 2009-2013 The CentOS Artwork SIG
#
# This program 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.
#
# This program 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 this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#
######################################################################

function random {

    local MESSAGE=${HELLO_WORLD}
    local MAXCHAR=${#MESSAGE}
    local COUNT=${1:-0}
    local OFFSET=${RANDOM}; let "OFFSET %= ${MAXCHAR}"

    tcar_printMessage "${MESSAGE:${OFFSET}:1}" --as-stdout-line

    COUNT=$(( ${COUNT} + 1))

    if [[ ${COUNT} -lt ${MAXCHAR} ]];then
        tcar_setModuleEnvironment -m random -t sibling -g "${COUNT}"
    fi

}