#!/bin/bash
######################################################################
#
#   cli_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 cli_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 [[ ${FUNCTION_EXPORTID} == '' ]];then
        cli_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
    # `cli_exportFunctions'.  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

}