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#!/bin/bash
#
# Copyright © 2021-2023 Arm Ltd. All rights reserved.
# SPDX-License-Identifier: MIT
#
#
# Usage: clang-format.sh [path to file or directory]
#
# Formats all git-tracked files in the repository according to clang-format rules.
#
# Takes an optional parameter to limit the scope to a specific directory or file.
#
# The clang-format rules can be found in the top level directory: .clang-format
# To prevent clang-format on a section of code, use the following:
# // clang-format off
# my code that i dont want to be clang-formatted goes here
# // clang-format on
#
# Check that clang-format is available.
CLANG_FORMAT=`command -v clang-format`
if [ -z $CLANG_FORMAT ]; then
# Maybe path isn't set. Try a well known location.
CLANG_FORMAT=/usr/bin/clang-format
if [ ! -x "$CLANG_FORMAT" ]; then
echo "Unable to locate clang-format. Try installing it: sudo apt-get install clang-format"
fi
fi
# Find all hpp and cpp files excluding some directories.
files=$(git ls-files ${1} | egrep -v '^(build-tool|docker|docs|generated|third-party)' | egrep '\.[ch](pp)?$')
num_files_changed=0
for file in $files; do
echo "[CLANG-FORMAT] ${file}"
# Run clang-format in-place to update the file
$CLANG_FORMAT -style=file ${file} -i
if [ $? -ne 0 ]; then
echo "Error: Execution of $CLANG_FORMAT failed."
exit -1
else
((num_files_changed++))
fi
done
echo "${num_files_changed} file(s) changed"
exit ${num_files_changed}
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