Blame tcar-scripts/tcar_getConfigSectionNames.sh

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#!/bin/bash
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######################################################################
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#
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#   tcar_getConfigSectionNames.sh -- This function standardizes the way
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#   section names are retrieved from configuration files. Once section
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#   names are retrieved they are printed to standard output for
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#   further processing.
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#
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#   Written by:
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#   * Alain Reguera Delgado <al@centos.org.cu>, 2009-2013
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#
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# Copyright (C) 2009-2013 The CentOS Artwork SIG
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or (at
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# your option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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#
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######################################################################
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function tcar_getConfigSectionNames {
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    # Define absolute path to configuration file we want to retrieve
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    # section names from. 
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    local CONFIGURATION_FILE=${1}
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    # Verify existence of configuration file.
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    tcar_checkFiles -ef ${CONFIGURATION_FILE}
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    # Define regular expression pattern used to retrieve section names
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    # from configuration files. Don't permit any regular expression
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    # meta-character either.
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    local CONFIGURATION_SECTION_REGEX='^\[[[:alnum:]_.-]+\][[:space:]]*$'
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    # Output all section names without brackets, one per line. Don't
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    # permit any kind of expansion here. Section names are used as
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    # reference to retrieve information from configuration file,
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    # expanding them would create different points of verifications.
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    egrep ${CONFIGURATION_SECTION_REGEX} ${CONFIGURATION_FILE} \
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        | sed -r 's,\[(.+)\],\1,'
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}