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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#     Key fingerprint = D67D 0F82 4CBD 90BC 6421  DF28 7CCE 757C 17CA 3951
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#
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# Copyright (C) 2013 The CentOS Project
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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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    # Define module's name (MODULE_NAME) using the first argument
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    # in the command-line.
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    local MODULE_NAME=$(tcar_getRepoName "${1}" "-f" | cut -d '-' -f1)
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    # Define regular expression to match available modules.
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    local MODULE_NAME_LIST=$(ls ${TCAR_SCRIPT_MODULES_BASEDIR} \
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        | tr '\n' '|' | sed -r 's/\|$//' | tr '[[:upper:]]' '[[:lower:]]')
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    # Check module's name possible values.
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    if [[ ! ${MODULE_NAME} =~ "^(${MODULE_NAME_LIST})$" ]];then
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        tcar_printMessage "`gettext "The module provided isn't valid."`" --as-error-line
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    fi
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    # Define module's directory.
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    local MODULE_DIR=${TCAR_SCRIPT_MODULES_BASEDIR}/$(tcar_getRepoName "${MODULE_NAME}" "-d")
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    # Define module's related directories.
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    local MODULE_DIR_MODULES=${MODULE_DIR}/Modules
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    # Define module's initialization file.
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    local MODULE_INIT_FILE=${MODULE_DIR}/${MODULE_NAME}.sh
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    # Check function script execution rights.
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    tcar_checkFiles -x ${MODULE_INIT_FILE}
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    # Remove the first argument passed to centos-art.sh command-line
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    # in order to build optional arguments inside functionalities. We
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    # start counting from second argument on, inclusively.
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    shift 1
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    # Redefine module-specific configuration values.
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    if [[ -f ${MODULE_DIR}/${MODULE_NAME}.conf.sh ]];then
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        . ${MODULE_DIR}/${MODULE_NAME}.conf.sh
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    fi
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    # Verify the number of arguments passed to centos-art.sh script.
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    # By default, to all modules, when no argument is provided after
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    # the module name, use the current directory as default directory
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    # to look for configuration files.
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    if [[ $# -eq 0 ]];then
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        set -- ${PWD}
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    fi
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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-specific initialization script.
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    ${MODULE_NAME} "${@}"
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    # Unset the module environment.
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    tcar_unsetModuleEnvironment "${MODULE_NAME}"
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}