#!/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.

#

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

# Use getopt to process arguments passed to tcar.sh script.  This

# function works with the following three environment variables:

#

#   ARGSS

#       Stores getopt short arguments definition.

#

#   ARGSL

#       Stores getopt long arguments definition.

#

#   TCAR_MODULE_ARGUMENT

#       Stores arguments passed to functions or command-line interface

#       depending the context it is defined.

#

# These three variables are not defined in this function but the

# function environment you want to provide option parsing for, through

# getopt command. Using local definition for these three variables let

# you to nest option parsing inside different function-environment

# levels.

function tcar_setModuleArguments {

    # Reset text domain locally, in order to prevent this function

    # from using the last text domain definition. By default all

    # common functions do use the same MO file.

    local TEXTDOMAIN="${TCAR_SCRIPT_NAME}"

    # Verify non-option arguments passed to command-line. If there

    # isn't any or dot is provided, redefine the TCAR_MODULE_ARGUMENT

    # variable to use the current location the tcar.sh script

    # was called from.

    if [[ -z "${TCAR_MODULE_ARGUMENT}" ]];then

        TCAR_MODULE_ARGUMENT=${PWD}

    fi

    # Verify presence of either short or long options in the

    # environment. If they are present apply option validation through

    # getopt.

    if [[ ! -z ${ARGSS} ]] || [[ ! -z ${ARGSL} ]];then

        # Redefine positional parameters using TCAR_MODULE_ARGUMENT variable.

        eval set -- "${TCAR_MODULE_ARGUMENT}"

        # Process positional parameters using getopt's option validation.

        TCAR_MODULE_ARGUMENT=$(getopt -o "${ARGSS}" -l "${ARGSL}" \

            -n "${TCAR_SCRIPT_NAME} (${TCAR_MODULE_NAME})" -- "${@}")

        # Verify getopt's exit status and finish the script execution

        # with an error message, if it failed.

        if [[ $? -ne 0 ]];then

            tcar_printMessage "`gettext "The argument verification failed."`" --as-error-line

        fi

    fi

}