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#!/usr/bin/env bash
# Copyright 2018 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
# Check that:
# - all C++ and header files conform to clang-format style.
# - all header files have appropriate include guards.
# - all GN files are formatted with `gn format`.
fail=0
function check_clang_format() {
if ! cmp -s <(clang-format -style=file "$1") "$1"; then
echo "Needs format: $1"
fail=1
fi
}
function check_include_guard() {
# Replace all folder slashes with underscores, and add "_" suffix.
guard_name=${1//[\/\.]/_}_
# This to-uppercase syntax is available in bash 4.0+
guard_name=${guard_name^^}
ifndef_count=$(grep -E "^#ifndef $guard_name\$" "$1" | wc -l)
define_count=$(grep -E "^#define $guard_name\$" "$1" | wc -l)
endif_count=$(grep -E "^#endif // $guard_name\$" "$1" | wc -l)
if [ $ifndef_count -ne 1 -o $define_count -ne 1 -o \
$endif_count -ne 1 ]; then
echo "Include guard missing/incorrect: $1"
fail=1
fi
}
function check_gn_format() {
if ! which gn &>/dev/null; then
echo "Please add gn to your PATH or manually check $1 for format errors."
else
if ! cmp -s <(cat "$1" | gn format --stdin) "$1"; then
echo "Needs format: $1"
fail=1
fi
fi
}
if [[ "${BASH_VERSION:0:1}" -lt 4 ]]; then
echo "This script requires at least bash version 4.0, please upgrade!"
echo "Your version: " $BASH_VERSION
exit $fail
fi
for f in $(git diff --name-only --diff-filter=d @{u}); do
# Skip third party files, except our custom BUILD.gns
if [[ $f =~ third_party/[^\/]*/src ]]; then
continue;
fi
# Skip statically copied Chromium QUIC build files.
if [[ $f =~ third_party/chromium_quic/build ]]; then
continue;
fi
if [[ $f =~ \.(cc|h)$ ]]; then
# clang-format check.
check_clang_format "$f"
# Include guard check.
if [[ $f =~ \.h$ ]]; then
check_include_guard "$f"
fi
elif [[ $f =~ \.gn(i)?$ ]]; then
check_gn_format "$f"
fi
done
exit $fail
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