-#!/bin/bash
-#
-# SPDX-License-Identifier: GPL-2.0-only
-#
-# Copyright (C) 2020-2023 Philippe Proulx <pproulx@efficios.com>
-
-expected_formatter_major_version=15
-
-# Runs the formatter, returning 1 if it's not the expected version.
-#
-# Argument 1:
-# Starting directory.
-#
-# Remaining arguments:
-# Formatter command.
-format_cpp() {
- local root_dir=$1
-
- shift
-
- local formatter=("$@")
- local version
-
- if ! version=$("${formatter[@]}" --version); then
- echo "Cannot execute \`${formatter[*]} --version\`." >&2
- return 1
- fi
-
- if [[ "$version" != *"clang-format version $expected_formatter_major_version"* ]]; then
- {
- echo "Expecting clang-format $expected_formatter_major_version."
- echo
- echo Got:
- echo
- echo "$version"
- } >& 2
-
- return 1
- fi
-
- # Using xargs(1) to fail as soon as the formatter fails (`-exec`
- # won't stop if its subprocess fails).
- #
- # We want an absolute starting directory because find(1) excludes
- # files in specific subdirectories.
- find "$(realpath "$root_dir")" \( -name '*.cpp' -o -name '*.hpp' \) \
- ! -path '*/src/cpp-common/optional.hpp' \
- ! -path '*/src/cpp-common/string_view.hpp' \
- ! -path '*/src/cpp-common/nlohmann/json.hpp' \
- ! -path '*/src/plugins/ctf/common/metadata/parser.*' \
- ! -path '*/src/plugins/ctf/common/metadata/lexer.*' \
- -print0 | xargs -P"$(nproc)" -n1 -t -0 "${formatter[@]}"
-}
-
-# Choose formatter
-if [[ -n "$FORMATTER" ]]; then
- # Try using environment-provided formatter
- read -ra formatter <<< "$FORMATTER"
-elif command -v clang-format-$expected_formatter_major_version &> /dev/null; then
- # Try using the expected version of clang-format
- formatter=("clang-format-$expected_formatter_major_version" -i)
-else
- # Try using `clang-format` as is
- formatter=(clang-format -i)
-fi
-
-# Choose root directory
-if (($# == 1)); then
- root_dir=$1
-
- if [[ ! -d "$root_dir" ]]; then
- echo "\`$root_dir\`: expecting an existing directory." >& 2
- exit 1
- fi
-else
- # Default: root of the project, processing all C++ files
- root_dir="$(dirname "${BASH_SOURCE[0]}")/.."
-fi
-
-# Try to format files
-format_cpp "$root_dir" "${formatter[@]}"