#!/bin/bash

# The olsr.org Optimized Link-State Routing daemon (olsrd)
#
# (c) by the OLSR project
#
# See our Git repository to find out who worked on this file
# and thus is a copyright holder on it.
#
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# * Redistributions of source code must retain the above copyright
#   notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
#   notice, this list of conditions and the following disclaimer in
#   the documentation and/or other materials provided with the
#   distribution.
# * Neither the name of olsr.org, olsrd nor the names of its
#   contributors may be used to endorse or promote products derived
#   from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
# Visit http://www.olsr.org for more information.
#
# If you find this software useful feel free to make a donation
# to the project. For more information see the website or contact
# the copyright holders.
#

set -e
set -u

declare -a flags=( ${@} )


declare -i flagscount=${#flags[*]}
declare -i i=0
declare regex='^[[:space:]]*-D(.+)[[:space:]]*$'
declare result=""

while [[ ${i} -lt ${flagscount} ]]; do
  if [[ -n "$(echo "${flags[i]}" | grep -E "${regex}")" ]]; then
    result="${result}$(echo "${flags[i]}" | sed -r "s/${regex}/ \1/g")"
  fi
  i+=1
done

echo "${result}"
