| # Copyright 2013 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. |
| |
| """Script that is used by PRESUBMIT.py to run style checks on Java files.""" |
| |
| import os |
| import subprocess |
| |
| |
| def RunCheckstyle(input_api, output_api, style_file): |
| if not os.path.exists(style_file): |
| file_error = (' Java checkstyle configuration file is missing: ' |
| + style_file) |
| return [output_api.PresubmitError(file_error)] |
| |
| # Filter out non-Java files and files that were deleted. |
| java_files = [x.LocalPath() for x in input_api.AffectedFiles(False, False) |
| if os.path.splitext(x.LocalPath())[1] == '.java'] |
| if not java_files: |
| return [] |
| |
| # Run checkstyle |
| checkstyle_env = os.environ.copy() |
| checkstyle_env['JAVA_CMD'] = 'java' |
| try: |
| check = subprocess.Popen(['checkstyle', '-c', style_file] + java_files, |
| stdout=subprocess.PIPE, env=checkstyle_env) |
| stdout, _ = check.communicate() |
| if check.returncode == 0: |
| return [] |
| except OSError as e: |
| import errno |
| if e.errno == errno.ENOENT: |
| install_error = (' checkstyle is not installed. Please run ' |
| 'build/install-build-deps-android.sh') |
| return [output_api.PresubmitPromptWarning(install_error)] |
| |
| # Remove non-error values from stdout |
| errors = stdout.splitlines() |
| |
| if errors and errors[0] == 'Starting audit...': |
| del errors[0] |
| if errors and errors[-1] == 'Audit done.': |
| del errors[-1] |
| |
| # Filter out warnings |
| errors = [x for x in errors if 'warning: ' not in x] |
| if not errors: |
| return [] |
| |
| local_path = input_api.PresubmitLocalPath() |
| output = [] |
| for error in errors: |
| # Change the full file path to relative path in the output lines |
| full_path, end = error.split(':', 1) |
| rel_path = os.path.relpath(full_path, local_path) |
| output.append(' %s:%s' % (rel_path, end)) |
| return [output_api.PresubmitPromptWarning('\n'.join(output))] |