[lttng-tools.git] / format-cpp

#!/bin/bash
#
# SPDX-License-Identifier: GPL-2.0-only
#
# Copyright (C) 2020-2022 Philippe Proulx <pproulx@efficios.com>

expected_formatter_major_version=14

# Runs the formatter, making sure it's the expected version.
format_cpp() {
	local formatter=$1
	local version

	version=$($formatter --version)

        # shellcheck disable=SC2181
	if (($? != 0)); then
		echo "Cannot execute \`$formatter --version\`." >&2
		return 1
	fi

	if [[ "$version" != *"clang-format version $expected_formatter_major_version"* ]]; then
		echo "Expecting clang-format $expected_formatter_major_version." >&2
		echo -n Got: >&2
		echo " \`$version\`" >&2
		echo >&2
		echo "Use the FORMATTER environment variable to specify the location of clang-format $expected_formatter_major_version"
		return 1
	fi

	local root_dir

	root_dir="$(dirname "${BASH_SOURCE[0]}")"

	# Using xargs to fail as soon as the formatter fails (`-exec`
	# won't stop if its subprocess fails).
	#
	# shellcheck disable=SC2086
	find "$root_dir" -path './src/vendor' -prune \
		-o -type f \( -name '*\.h' -o -name '*\.hpp' -o -name '*\.c' -o -name '*\.cpp' \) \
		-not -path '*/\.*' -print0 | xargs -n1 -0 $formatter -i --style=file --fallback-style=none
}

if [[ -n "$FORMATTER" ]]; then
	# Try using environment-provided formatter
	formatter=$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

# Try to format files
format_cpp "$formatter"
Commit	Line	Data
	1	#!/bin/bash
	2	#
	3	# SPDX-License-Identifier: GPL-2.0-only
	4	#
	5	# Copyright (C) 2020-2022 Philippe Proulx <pproulx@efficios.com>
	6
	7	expected_formatter_major_version=14
	8
	9	# Runs the formatter, making sure it's the expected version.
	10	format_cpp() {
	11	local formatter=$1
	12	local version
	13
	14	version=$($formatter --version)
	15
	16	# shellcheck disable=SC2181
	17	if (($? != 0)); then
	18	echo "Cannot execute \`$formatter --version\`." >&2
	19	return 1
	20	fi
	21
	22	if [[ "$version" != "clang-format version $expected_formatter_major_version" ]]; then
	23	echo "Expecting clang-format $expected_formatter_major_version." >&2
	24	echo -n Got: >&2
	25	echo " \`$version\`" >&2
	26	echo >&2
	27	echo "Use the FORMATTER environment variable to specify the location of clang-format $expected_formatter_major_version"
	28	return 1
	29	fi
	30
	31	local root_dir
	32
	33	root_dir="$(dirname "${BASH_SOURCE[0]}")"
	34
	35	# Using xargs to fail as soon as the formatter fails (`-exec`
	36	# won't stop if its subprocess fails).
	37	#
	38	# shellcheck disable=SC2086
	39	find "$root_dir" -path './src/vendor' -prune \
	40	-o -type f \( -name '\.h' -o -name '\.hpp' -o -name '\.c' -o -name '\.cpp' \) \
	41	-not -path '/\.' -print0 \| xargs -n1 -0 $formatter -i --style=file --fallback-style=none
	42	}
	43
	44	if [[ -n "$FORMATTER" ]]; then
	45	# Try using environment-provided formatter
	46	formatter=$FORMATTER
	47	elif command -v clang-format-$expected_formatter_major_version &> /dev/null; then
	48	# Try using the expected version of clang-format
	49	formatter="clang-format-$expected_formatter_major_version -i"
	50	else
	51	# Try using `clang-format` as is
	52	formatter='clang-format -i'
	53	fi
	54
	55	# Try to format files
	56	format_cpp "$formatter"