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openthread/script/check-header-guards
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Abtin Keshavarzian b5737b4f2b [script] add script to check, enforce, and update header guards (#12227)
This commit introduces a new script `update-header-guards.py` which
checks for the presence of header guards in `.h` and `.hpp` files and
automatically updates them, standardizing the header guard name format
across the codebase.

The new format for header guards is derived from the full path of the
file. For example, `src/core/common/notifier.hpp` will use
`OT_CORE_COMMON_NOTIFIER_HPP_`. The guard name includes additional
prefixes such as `OT_` or `OPENTHREAD_` to ensure uniqueness.

This new naming format handles cases where the same filename may be used
in different folders, such as the two `heap.hpp` files located in
`src/core/common` and `src/core/utils`.

It also ensures that public and platform OpenThread headers under
`include/openthread` have uniquely distinct header guard names to avoid
conflicts when these headers are included in other projects.

The new script helped identify issues with existing header files that
lacked header guards (e.g., `posix/system.hpp`) or had improper guards
(e.g., `openthread/link_metrics.h`).

This commit also introduces a new check script `check-header-guards` to
validate that all header guards are correctly formatted. This check is
added to the GitHub CI actions to ensure consistency moving forward.

All existing header files have been updated (using the new script)
to apply the new guard name format.
2025-12-22 13:43:41 -08:00

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#!/bin/bash
#
# Copyright (c) 2025, The OpenThread Authors.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# 3. Neither the name of the copyright holder nor the
# names of its contributors may be used to endorse or promote products
# derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
set -euo pipefail
die()
{
echo >&2 "ERROR: $*"
exit 1
}
main()
{
./script/update-header-guards.py || die "Could not run ./script/update-header-guards - fix header guards"
status=$(git status --porcelain)
if [ -n "${status}" ]; then
die "Header guards are not properly formatted - run ./script/update-header-guards"
else
echo 'PASS: header-guard-check'
fi
}
main "$@"