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#!/usr/bin/env python3
# Copyright 2014 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.
"""Redirects to the version of clang-format checked into the Chrome tree.
clang-format binaries are pulled down from Google Cloud Storage whenever you
sync Chrome, to platform-specific locations. This script knows how to locate
those tools, assuming the script is invoked from inside a Chromium checkout."""
import detect_host_arch
import gclient_paths
import os
import subprocess
import sys
class NotFoundError(Exception):
"""A file could not be found."""
def __init__(self, e):
Exception.__init__(
self,
'Problem while looking for clang-format in Chromium source tree:\n'
'%s' % e)
def FindClangFormatToolInChromiumTree():
"""Return a path to the clang-format executable, or die trying."""
primary_solution_path = gclient_paths.GetPrimarySolutionPath()
if primary_solution_path:
bin_path = os.path.join(primary_solution_path, 'third_party',
'clang-format',
'clang-format' + gclient_paths.GetExeSuffix())
if os.path.exists(bin_path):
return bin_path
bin_path = gclient_paths.GetBuildtoolsPlatformBinaryPath()
if not bin_path:
raise NotFoundError(
'Could not find checkout in any parent of the current path.\n'
'Set CHROMIUM_BUILDTOOLS_PATH to use outside of a chromium '
'checkout.')
# TODO(b/336843583): Remove old_tool_path when migrated over
old_tool_path = os.path.join(bin_path,
'clang-format' + gclient_paths.GetExeSuffix())
new_bin_path = bin_path
arch = detect_host_arch.HostArch()
if sys.platform == 'darwin' and arch == 'arm64':
new_bin_path += '_arm64'
old_new_tool_path = os.path.join(
new_bin_path, 'format', 'clang-format' + gclient_paths.GetExeSuffix())
latest_new_tool_path = os.path.join(
f'{new_bin_path}-format', 'clang-format' + gclient_paths.GetExeSuffix())
possible_paths = [latest_new_tool_path, old_new_tool_path, old_tool_path]
for path in possible_paths:
if os.path.exists(path):
return path
raise NotFoundError('File does not exist in either path: %s' %
possible_paths)
def FindClangFormatScriptInChromiumTree(script_name):
"""Return a path to a clang-format helper script, or die trying."""
primary_solution_path = gclient_paths.GetPrimarySolutionPath()
if primary_solution_path:
script_path = os.path.join(primary_solution_path, 'third_party',
'clang-format', 'script', script_name)
if os.path.exists(script_path):
return script_path
tools_path = gclient_paths.GetBuildtoolsPath()
if not tools_path:
raise NotFoundError(
'Could not find checkout in any parent of the current path.\n',
'Set CHROMIUM_BUILDTOOLS_PATH to use outside of a chromium '
'checkout.')
script_path = os.path.join(tools_path, 'clang_format', 'script',
script_name)
if not os.path.exists(script_path):
raise NotFoundError('File does not exist: %s' % script_path)
return script_path
def main(args):
try:
tool = FindClangFormatToolInChromiumTree()
except NotFoundError as e:
sys.stderr.write("%s\n" % str(e))
return 1
# Add some visibility to --help showing where the tool lives, since this
# redirection can be a little opaque.
help_syntax = ('-h', '--help', '-help', '-help-list', '--help-list')
if any(match in args for match in help_syntax):
print('\nDepot tools redirects you to the clang-format at:\n %s\n' %
tool)
return subprocess.call([tool] + args)
if __name__ == '__main__':
try:
sys.exit(main(sys.argv[1:]))
except KeyboardInterrupt:
sys.stderr.write('interrupted\n')
sys.exit(1)
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