#!/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

}