Blame Automation/Scripts/tcar_setModuleEnvironment.sh

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#!/bin/bash
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######################################################################
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#
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#   tcar_setModuleEnvironment.sh -- This function initiates module
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#   environments inside the centos-art.sh script.
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#
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#   Written by:
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#   * Alain Reguera Delgado <al@centos.org.cu>, 2009-2013
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#
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# Copyright (C) 2009-2013 The CentOS Artwork SIG
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or (at
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# your option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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#
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######################################################################
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function tcar_setModuleEnvironment {
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    local ARG_MODULE_NAME=''
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    local ARG_MODULE_TYPE=''
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    local ARG_MODULE_ARGS=''
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    # Retrieve module's name and module's type from arguments passed
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    # through this function positional parameters.
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    OPTIND=1
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    while getopts "m:,t:,g:" OPTION "${@}"; do
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        case "${OPTION}" in
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            m ) ARG_MODULE_NAME="${OPTARG}" ;;
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            t ) ARG_MODULE_TYPE="${OPTARG}" ;;
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            g ) ARG_MODULE_ARGS="${OPTARG} ${ARG_MODULE_ARGS}" ;;
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        esac
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    done
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    # Clean up positional parameters to reflect the fact that options
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    # have been processed already.
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    shift $(( ${OPTIND} - 1 ))
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    # Initialize module's global counter.
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    TCAR_MODULE_COUNT=${TCAR_MODULE_COUNT:-0}
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    # When the last module in the chain of executed modules is the
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    # same module being currently executed, don't create a new
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    # position for it in the chain of modules. Instead, use the
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    # information it already has from its previous execution. In order
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    # for this to work, the current module must be executed as sibling
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    # module of other module or itself.
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    if [[ ${TCAR_MODULE_COUNT} -gt 0 ]];then
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        if [[ ${TCAR_MODULE_NAMES[((${TCAR_MODULE_COUNT} - 1))]} == ${ARG_MODULE_NAME} ]];then
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            if [[ ${ARG_MODULE_TYPE} == 'sibling' ]];then
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                tcar_printMessage '~~~~~~~~~~~~~~~~~~~~~~~~~> : '"${TCAR_MODULE_NAME} ${TCAR_MODULE_ARGUMENT}" --as-debugger-line
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                ${ARG_MODULE_NAME} ${ARG_MODULE_ARGS} ${@}
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                return
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            fi
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        fi
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    fi
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    tcar_printMessage '=========================>: ['${TCAR_MODULE_COUNT}'] | '${FUNCNAME[1]} --as-debugger-line
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    # Define module's base directory. This is the directory where the
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    # initialization script is stored in.
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    local TCAR_MODULE_BASEDIR=${TCAR_SCRIPT_MODULES_BASEDIR}
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    if [[ ${#TCAR_MODULE_BASEDIRS[*]} -gt 0 ]];then
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        if [[ ${ARG_MODULE_TYPE} == "parent" ]];then
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            TCAR_MODULE_BASEDIR=${TCAR_SCRIPT_MODULES_BASEDIR}
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        elif [[ ${ARG_MODULE_TYPE} == "sibling" ]];then
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            if [[ ${TCAR_MODULE_TYPES[((${TCAR_MODULE_COUNT} - 1 ))]} == 'sibling' ]];then
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                TCAR_MODULE_BASEDIR=${TCAR_MODULE_BASEDIRS[((${TCAR_MODULE_COUNT}-2))]}
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            else
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                TCAR_MODULE_BASEDIR=${TCAR_MODULE_BASEDIRS[((${TCAR_MODULE_COUNT}-1))]}
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            fi
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        else
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            TCAR_MODULE_BASEDIR=${TCAR_MODULE_BASEDIRS[${TCAR_MODULE_COUNT}]}
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        fi
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    fi
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    tcar_printMessage "TCAR_MODULE_BASEDIR : ${TCAR_MODULE_BASEDIR}" --as-debugger-line
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    # Define module's name.
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    TCAR_MODULE_NAMES[${TCAR_MODULE_COUNT}]=$(tcar_getRepoName "${ARG_MODULE_NAME:-unknown}" "-f" | cut -d '-' -f1)
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    local TCAR_MODULE_NAME=${TCAR_MODULE_NAMES[${TCAR_MODULE_COUNT}]}
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    tcar_printMessage "TCAR_MODULE_NAME : [${TCAR_MODULE_COUNT}]=${TCAR_MODULE_NAME}" --as-debugger-line
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    # Define module's type.
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    TCAR_MODULE_TYPES[${TCAR_MODULE_COUNT}]="${ARG_MODULE_TYPE:-parent}"
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    local TCAR_MODULE_TYPE=${TCAR_MODULE_TYPES[${TCAR_MODULE_COUNT}]}
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    tcar_printMessage "TCAR_MODULE_TYPE : ${TCAR_MODULE_TYPE}" --as-debugger-line
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    # Define module's arguments.  This variable is used in different
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    # module environments to pass positional parameters from one
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    # environment to another using local definitions.
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    TCAR_MODULE_ARGUMENTS[${TCAR_MODULE_COUNT}]="${ARG_MODULE_ARGS:-} ${@}"
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    local TCAR_MODULE_ARGUMENT=${TCAR_MODULE_ARGUMENTS[${TCAR_MODULE_COUNT}]}
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    tcar_printMessage "TCAR_MODULE_ARGUMENT : ${TCAR_MODULE_ARGUMENT}" --as-debugger-line
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    # Check module's name possible values.
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    tcar_checkModuleName
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    # Define module's directory.
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    TCAR_MODULE_DIRS[${TCAR_MODULE_COUNT}]=${TCAR_MODULE_BASEDIR}/$(tcar_getRepoName "${TCAR_MODULE_NAME}" "-d")
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    local TCAR_MODULE_DIR=${TCAR_MODULE_DIRS[${TCAR_MODULE_COUNT}]}
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    tcar_printMessage "TCAR_MODULE_DIR : ${TCAR_MODULE_DIR}" --as-debugger-line
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    # Define module's directories not reused from module's parent
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    # directory structure.
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    TCAR_MODULE_DIRS_MODULES[${TCAR_MODULE_COUNT}]=${TCAR_MODULE_DIR}/Modules
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    local TCAR_MODULE_DIR_MODULES=${TCAR_MODULE_DIRS_MODULES[${TCAR_MODULE_COUNT}]}
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    tcar_printMessage "TCAR_MODULE_DIR_MODULES : ${TCAR_MODULE_DIR_MODULES}" --as-debugger-line
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    TCAR_MODULE_DIRS_CONFIGS[${TCAR_MODULE_COUNT}]=${TCAR_MODULE_DIR}/Configs
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    local TCAR_MODULE_DIR_CONFIGS=${TCAR_MODULE_DIRS_CONFIGS[${TCAR_MODULE_COUNT}]}
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    tcar_printMessage "TCAR_MODULE_DIR_CONFIGS : ${TCAR_MODULE_DIR_CONFIGS}" --as-debugger-line
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    # Define module's directories reused from module's parent
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    # directory structure.
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    TCAR_MODULE_DIRS_MANUALS[${TCAR_MODULE_COUNT}]=${TCAR_MODULE_DIRS[0]}/Manuals
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    local TCAR_MODULE_DIR_MANUALS=${TCAR_MODULE_DIRS_MANUALS[${TCAR_MODULE_COUNT}]}
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    tcar_printMessage "TCAR_MODULE_DIR_MANUALS : ${TCAR_MODULE_DIR_MANUALS}" --as-debugger-line
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    TCAR_MODULE_DIRS_LOCALES[${TCAR_MODULE_COUNT}]=${TCAR_MODULE_DIRS[0]}/Locales
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    local TCAR_MODULE_DIR_LOCALES=${TCAR_MODULE_DIRS_LOCALES[${TCAR_MODULE_COUNT}]}
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    tcar_printMessage "TCAR_MODULE_DIR_LOCALES : ${TCAR_MODULE_DIR_LOCALES}" --as-debugger-line
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    # Define module's initialization file.
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    TCAR_MODULE_INIT_FILES[${TCAR_MODULE_COUNT}]=${TCAR_MODULE_DIR}/${TCAR_MODULE_NAME}.sh
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    local TCAR_MODULE_INIT_FILE=${TCAR_MODULE_INIT_FILES[${TCAR_MODULE_COUNT}]}
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    tcar_printMessage "TCAR_MODULE_INIT_FILE : ${TCAR_MODULE_INIT_FILE}" --as-debugger-line
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    # Define module's connection with their localization files. It is
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    # required that gettext-specific variables be defined locally, in
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    # order to implement per-module localization.
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    local TEXTDOMAIN=$(basename ${TCAR_MODULE_INIT_FILE})
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    tcar_printMessage "TEXTDOMAIN: ${TEXTDOMAIN}" --as-debugger-line
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    local TEXTDOMAINDIR=${TCAR_MODULE_DIR_LOCALES}
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    tcar_printMessage "TEXTDOMAINDIR: ${TEXTDOMAINDIR}" --as-debugger-line
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    # Increment module's counter just before creating next module's
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    # base directory.
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    TCAR_MODULE_COUNT=$(( ${TCAR_MODULE_COUNT} + 1 ))
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    # Define next module's base directory.
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    TCAR_MODULE_BASEDIRS[${TCAR_MODULE_COUNT}]=${TCAR_MODULE_DIR_MODULES}
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    # Check function script execution rights.
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    tcar_checkFiles -ex ${TCAR_MODULE_INIT_FILE}
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    # Load module-specific (function) scripts into current execution
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    # environment.  Keep the tcar_setModuleEnvironmentScripts function
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    # call after all variables and arguments definitions.
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    tcar_setModuleEnvironmentScripts
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    # Execute module's initialization script with its arguments.
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    tcar_printMessage '-------------------------> : '"${TCAR_MODULE_NAME} ${TCAR_MODULE_ARGUMENT}" --as-debugger-line
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    ${TCAR_MODULE_NAME} ${TCAR_MODULE_ARGUMENT}
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    # Unset module-specific environment.
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    tcar_printMessage '<------------------------- : '"${TCAR_MODULE_NAME} ${TCAR_MODULE_ARGUMENT}" --as-debugger-line
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    tcar_unsetModuleEnvironment
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    # Decrement module counter just after unset unused module
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    # environments.
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    TCAR_MODULE_COUNT=$(( ${TCAR_MODULE_COUNT} - 1 ))
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    # Unset array and non-array variables used in this function.
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    if [[ ${TCAR_MODULE_COUNT} -eq 0 ]];then
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        unset TCAR_MODULE_NAMES
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        unset TCAR_MODULE_BASEDIRS
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        unset TCAR_MODULE_DIRS
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        unset TCAR_MODULE_DIRS_MODULES
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        unset TCAR_MODULE_DIRS_MANUALS
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        unset TCAR_MODULE_DIRS_LOCALES
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        unset TCAR_MODULE_DIRS_CONFIGS
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        unset TCAR_MODULE_NAME
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        unset TCAR_MODULE_DIR
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        unset TCAR_MODULE_DIR_MODULES
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        unset TCAR_MODULE_DIR_MANUALS
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        unset TCAR_MODULE_DIR_LOCALES
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        unset TCAR_MODULE_DIR_CONFIGS
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    fi
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    tcar_printMessage '<=========================: ['${TCAR_MODULE_COUNT}'] | '${FUNCNAME[1]} --as-debugger-line
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}