Update monet.

tools/android/checkstyle/checkstyle.py

+# 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
+import xml.dom.minidom
+
+
+CHROMIUM_SRC = os.path.normpath(
+    os.path.join(os.path.dirname(__file__),
+                 os.pardir, os.pardir, os.pardir))
+CHECKSTYLE_ROOT = os.path.join(CHROMIUM_SRC, 'third_party', 'checkstyle',
+                               'checkstyle-6.5-all.jar')
+
+
+def RunCheckstyle(input_api, output_api, style_file, black_list=None):
+  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.AbsoluteLocalPath() for x in input_api.AffectedSourceFiles(
+                lambda f: input_api.FilterSourceFile(f, black_list=black_list))
+                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(['java', '-cp',
+                              CHECKSTYLE_ROOT,
+                              'com.puppycrawl.tools.checkstyle.Main', '-c',
+                              style_file, '-f', 'xml'] + java_files,
+                              stdout=subprocess.PIPE, env=checkstyle_env)
+    stdout, _ = check.communicate()
+  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)]
+
+  result_errors = []
+  result_warnings = []
+
+  local_path = input_api.PresubmitLocalPath()
+  root = xml.dom.minidom.parseString(stdout)
+  for fileElement in root.getElementsByTagName('file'):
+    fileName = fileElement.attributes['name'].value
+    fileName = os.path.relpath(fileName, local_path)
+    errors = fileElement.getElementsByTagName('error')
+    for error in errors:
+      line = error.attributes['line'].value
+      column = ''
+      if error.hasAttribute('column'):
+        column = '%s:' % (error.attributes['column'].value)
+      message = error.attributes['message'].value
+      result = '  %s:%s:%s %s' % (fileName, line, column, message)
+
+      severity = error.attributes['severity'].value
+      if severity == 'error':
+        result_errors.append(result)
+      elif severity == 'warning':
+        result_warnings.append(result)
+
+  result = []
+  if result_warnings:
+    result.append(output_api.PresubmitPromptWarning('\n'.join(result_warnings)))
+  if result_errors:
+    result.append(output_api.PresubmitError('\n'.join(result_errors)))
+  return result