#!/bin/bash

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

#

#   tcar - The CentOS Artwork Repository automation tool.

#   Copyright © 2014 The CentOS Artwork SIG

#

#   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.

#

#   Alain Reguera Delgado <al@centos.org.cu>

#   39 Street No. 4426 Cienfuegos, Cuba.

#

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

# Standardize the way specific functionalities are exported to tcar.sh

# script environment.

function tcar_setModuleEnvironmentScripts {

    # Reset text domain locally, in order to prevent this function

    # from using the last text domain definition. By default all

    # common functions do use the same MO file.

    local TEXTDOMAIN="${TCAR_SCRIPT_NAME}"

    # Define the pattern used to retrieve function names from function

    # files.

    local FUNCTION_PATTERN="^function[[:space:]]+${TCAR_MODULE_NAME}(_[[:alnum:]]+)?[[:space:]]+{[[:space:]]*$"

    # Define the list of files.

    local TCAR_MODULE_SCRIPT=''

    local TCAR_MODULE_SCRIPTS="${TCAR_MODULE_INIT_FILE}"

    if [[ -d ${TCAR_MODULE_DIR} ]];then

        TCAR_MODULE_SCRIPTS="${TCAR_MODULE_SCRIPTS}

            $(tcar_getFilesList \

                -p "${TCAR_MODULE_DIR}/${TCAR_MODULE_NAME}_[[:alnum:]]+\.sh$" \

                -t 'f' ${TCAR_MODULE_DIR})"

    fi

    # Verify the list of files. If no function file exists for the

    # location specified stop the script execution. Otherwise the

    # script will surely try to execute a function that haven't been

    # exported yet and report an error about it.

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

        tcar_printMessage "${FUNCNAME}: `gettext "No function file was found."`" --as-error-line

    fi

    # Process the list of files.

    for TCAR_MODULE_SCRIPT in ${TCAR_MODULE_SCRIPTS};do

        # Verify the execution rights for function file.

        tcar_checkFiles -ex ${TCAR_MODULE_SCRIPT}

        # Retrieve the function's name from function's file.

        local TCAR_MODULE_SCRIPT_FN=$(egrep "${FUNCTION_PATTERN}" ${TCAR_MODULE_SCRIPT} \

            | gawk '{ print $2 }')

        # Verify function's name. It cannot be an empty value.

        if [[ -z "${TCAR_MODULE_SCRIPT_FN}" ]];then

            tcar_printMessage "`gettext "No function definition found."`" --as-error-line

        fi

        # Verify that function files have not been already exported.

        # If they have been already exported don't export them again.

        # Instead, continue with the next function file in the list.

        declare -F | gawk '{ print $3 }' | egrep "^${TCAR_MODULE_SCRIPT}$" > /dev/null

        if [[ $? -eq 0 ]];then

            continue

        fi

        # Initialize the function file.

        . ${TCAR_MODULE_SCRIPT}

        # Export the function names inside the file to current shell

        # script environment.

        export -f ${TCAR_MODULE_SCRIPT_FN}

        tcar_printMessage "export -f : ${TCAR_MODULE_SCRIPT_FN}" --as-debugger-line

    done

}