Blame Automation/Scripts/tcar_setModuleEnvironmentScripts.sh

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#!/bin/bash
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######################################################################
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#
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#   tcar_setModuleEnvironmentScripts.sh -- This function standardizes
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#   the way specific functionalities are exported to centos-art.sh
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#   script environment.
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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) 2009-2013 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_setModuleEnvironmentScripts {
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    # Retrieve export identifier for the function we want to export.
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    local MODULE_INIT_FILE="${1}"
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    # Verify the export identification existence.
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    tcar_checkFiles -x ${MODULE_INIT_FILE}
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    # Define the source location where function files are placed in.
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    local MODULE_SCRIPTS_DIR=$(dirname ${MODULE_INIT_FILE})/Scripts
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    # Define suffix used to retrieve function files.
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    local MODULE_INIT_FILENAME=$(basename "${MODULE_INIT_FILE}" | sed -r 's/\.sh$//')
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    # Define the pattern used to retrieve function names from function
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    # files.
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    local FUNCTION_PATTERN="^function[[:space:]]+${MODULE_INIT_FILENAME}(_[[:alnum:]]+)?[[:space:]]+{[[:space:]]*$"
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    # Define the list of files.
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    local MODULE_SCRIPTS="${MODULE_INIT_FILE}
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        $(tcar_getFilesList ${MODULE_SCRIPTS_DIR} \
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        --pattern="${MODULE_DIR}/.+\.sh$" --maxdepth='1' \
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        --mindepth='1' --type='f')"
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    # Verify the list of files. If no function file exists for the
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    # location specified stop the script execution. Otherwise the
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    # script will surely try to execute a function that haven't been
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    # exported yet and report an error about it.
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    if [[ -z ${MODULE_SCRIPTS} ]];then
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        tcar_printMessage "${FUNCNAME}: `gettext "No function file was found."`" --as-error-line
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    fi
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    # Process the list of files.
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    for MODULE_SCRIPT in ${MODULE_SCRIPTS};do
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        # Verify the execution rights for function file.
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        tcar_checkFiles -x ${MODULE_SCRIPT}
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        # Verify that function files have not been already exported.
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        # If they have been already exported don't export them again.
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        # Instead, continue with the next function file in the list.
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        declare -F | gawk '{ print $3 }' | egrep "^${MODULE_SCRIPT}$" > /dev/null
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        if [[ $? -eq 0 ]];then
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            continue
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        fi
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        # Initialize the function file.
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        . ${MODULE_SCRIPT}
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        # Export the function names inside the file to current shell
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        # script environment.
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        export -f $(egrep "${FUNCTION_PATTERN}" ${MODULE_SCRIPT} | gawk '{ print $2 }')
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    done
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}