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CISS.debian.installer/lib/cdi_0005_guard/0006_source_guard.sh
Marc S. Weidner 353568eb69
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V8.00.000.2025.06.17
Signed-off-by: Marc S. Weidner <msw@coresecret.dev>
2025-10-11 22:14:22 +01:00

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#!/bin/bash
# SPDX-Version: 3.0
# SPDX-CreationInfo: 2025-06-17; WEIDNER, Marc S.; <msw@coresecret.dev>
# SPDX-ExternalRef: GIT https://git.coresecret.dev/msw/CISS.debian.installer.git
# SPDX-FileContributor: WEIDNER, Marc S.; Centurion Intelligence Consulting Agency
# SPDX-FileCopyrightText: 2024-2025; WEIDNER, Marc S.; <msw@coresecret.dev>
# SPDX-FileType: SOURCE
# SPDX-License-Identifier: EUPL-1.2 OR LicenseRef-CCLA-1.0
# SPDX-LicenseComment: This file is part of the CISS.debian.installer.secure framework.
# SPDX-PackageName: CISS.debian.installer
# SPDX-Security-Contact: security@coresecret.eu
#######################################
# Prevent the file to be sourced twice.
# Globals:
# None
# Arguments:
# 1: File to source.
#######################################
source_guard() {
declare var_file="${1}"
declare var_name="${var_file##*/}"
declare var_guard="_${var_name//[^a-zA-Z0-9_]/_}_LOADED"
if ! declare -p "${var_guard}" &>/dev/null; then
# shellcheck disable=SC1090
. "${var_file}"
fi
}
### Prevents accidental 'unset -f'.
# shellcheck disable=SC2034
readonly -f source_guard
# vim: number et ts=2 sw=2 sts=2 ai tw=128 ft=sh