#!/bin/bash

#

# cli_getConfigValue.sh -- This function standardizes the way are

# retrieved from configuration files. As arguments, the configuration

# file absolute path, the configuration section name, and the

# configuration option name must be provided.

#

# Copyright (C) 2009, 2010, 2011, 2012 The CentOS Project

#

# 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.

#

# ----------------------------------------------------------------------

# $Id$

# ----------------------------------------------------------------------

function cli_getConfigValue {

    # Initialize absolute path to configuration file.

    local CONFIG_ABSPATH="$1"

    # Initialize configuration section name where the variable value

    # we want to to retrieve is set in.

    local CONFIG_SECTION="$2"

    # Initialize variable name we want to retrieve value from.

    local CONFIG_OPTION="$3"

    # Retrieve configuration lines from configuration file.

    local CONFIG_LINES=$(cli_getConfigLines \

        "$CONFIG_ABSPATH" "$CONFIG_SECTION" "$CONFIG_OPTION")

    # Parse configuration lines to retrieve the values of variable

    # names.

    local CONFIG_VALUE=$(echo $CONFIG_LINES \

        | gawk 'BEGIN{FS="="}; { print $2 }' \

        | sed -r -e 's/"//g' -e 's/^[[:space:]]*//' -e 's/[[:space:]]*$//' )

    # Output values related to variable name.

    echo "$CONFIG_VALUE"

}