#!/bin/bash

#

# render_getConfigOption.sh -- This function standardizes the

# configuration fields are retrived from some action-specific

# definitions.

#

# Copyright (C) 2009-2013 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 render_getConfigOption {

    # Initialize action string.

    local ACTION="$1"

    # Initialize field definition.

    local FIELD="$2"

    # Initialize configuration options.

    local OPTION=''

    # Check action string. The action string must be present in order

    # for this function to work. It provides the information needed to

    # retrive configurantion options from.

    if [[ "$ACTION" == '' ]];then

        cli_printMessage "`gettext "There is no action string to work with."`" --as-error-line

    fi

    # Check field definition. The field definition must match any of

    # the formats specified by the `-f' option of `cut' command.

    if [[ ! "$FIELD" =~ '^([0-9]+|[0-9]+-|-[0-9]+|[0-9]+-[0-9]+)$' ]];then

        cli_printMessage "`gettext "The field definition is not valid."`" --as-error-line

    fi

    # Get configuration option from action string.

    OPTION=$(echo -n "$ACTION" | cut -d: -f${FIELD})

    # Sanitate configuration option retrived from action string.

    OPTION=$(echo -n "${OPTION}" \

        | sed -r 's!^ *!!g' \

        | sed -r 's!( |,|;) *! !g' \

        | sed -r 's! *$!!g')

    # Print out the configuration option retrived from action string,

    # only if it is not an empty value. Do not use `echo' or `printf'

    # built-in commands here. Use the `cli_printMessage' functionality

    # instead.  This is required in order to reverse the apostrophe

    # codification accomplished when options were retrived from

    # command-line (cli_parseArgumentsReDef) in the argument of

    # options like `--post-rendition' and `--last-rendition'.

    if [[ $OPTION != '' ]];then

        cli_printMessage "$OPTION" --as-stdout-line

    fi

}