#!/bin/bash

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

#

#   tcar_unsetFunctions.sh -- This function unsets functionalities from

#   centos-art.sh script execution environment.

#

#   Written by: 

#   * Alain Reguera Delgado <al@centos.org.cu>, 2009-2013

#     Key fingerprint = D67D 0F82 4CBD 90BC 6421  DF28 7CCE 757C 17CA 3951

#

# 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.

#

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

function tcar_unsetFunctions {

    # Define export id used to retrieve function files. This is the

    # same export id used to export functions without the directory

    # part.

    local FUNCTION_EXPORTID=$(basename "${1}")

    # Verify suffix value used to retrieve function files.

    if [[ -z ${FUNCTION_EXPORTID} ]];then

        tcar_printMessage "`gettext "The export id was not provided."`" --as-error-line

    fi

    # Define list of format-specific functionalities. This is the

    # list of function definitions previously exported by

    # `tcar_setModuleEnvironmentScripts'.  Be sure to limit the list to function

    # names that start with the suffix specified only.

    local FUNCTION_DEF=''

    local FUNCTION_DEFS=$(declare -F | gawk '{ print $3 }' | egrep "^${FUNCTION_EXPORTID}")

    # Unset function names from current execution environment.

    for FUNCTION_DEF in ${FUNCTION_DEFS};do

        unset -f ${FUNCTION_DEF}

    done

}