#!/bin/bash

######################################################################

#

#   tcar - The CentOS Artwork Repository automation tool.

#   Copyright © 2014 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.

#

#   Alain Reguera Delgado <al@centos.org.cu>

#   39 Street No. 4426 Cienfuegos, Cuba.

#

######################################################################

# Standardize the way section names are retrieved from configuration

# files. Once section names are retrieved they are printed to standard

# output for further processing.

function tcar_getConfigSectionNames {

    # Define absolute path to configuration file we want to retrieve

    # section names from. 

    local CONFIGURATION_FILE=${1}

    # Verify existence of configuration file.

    tcar_checkFiles -ef ${CONFIGURATION_FILE}

    # Define regular expression pattern used to retrieve section names

    # from configuration files. Don't permit any regular expression

    # meta-character either.

    local CONFIGURATION_SECTION_REGEX='^\[[[:alnum:]_.-]+\][[:space:]]*$'

    # Output all section names without brackets, one per line. Don't

    # permit any kind of expansion here. Section names are used as

    # reference to retrieve information from configuration file,

    # expanding them would create different points of verifications.

    egrep ${CONFIGURATION_SECTION_REGEX} ${CONFIGURATION_FILE} \

        | sed -r 's,\[(.+)\],\1,'

}