text: # Copyright 2016 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.
  
  import re
  
  
  def PostUploadHook(cl, change, output_api):
    rietveld_obj = cl.RpcServer()
    description = rietveld_obj.get_description(cl.issue)
  
    existing_bots = (change.CQ_INCLUDE_TRYBOTS or '').split(';')
    clean_bots = set(filter(None, map(lambda s: s.strip(), existing_bots)))
    new_bots = clean_bots | set(
        ['master.tryserver.chromium.linux:closure_compilation'])
    new_tag = 'CQ_INCLUDE_TRYBOTS=%s' % ';'.join(new_bots)
  
    if clean_bots:
      tag_reg = '^CQ_INCLUDE_TRYBOTS=.*$'
      new_description = re.sub(tag_reg, new_tag, description, flags=re.M | re.I)
    else:
      new_description = description + '\n' + new_tag
  
    if new_description == description:
      return []
  
    rietveld_obj.update_description(cl.issue, new_description)
    return [output_api.PresubmitNotifyResult(
        'Automatically added optional Closure bots to run on CQ.')]
  
  
  def CheckChangeOnUpload(input_api, output_api):
    return _CommonChecks(input_api, output_api)
  
  
  def CheckChangeOnCommit(input_api, output_api):
    return _CommonChecks(input_api, output_api)
  
  
  def _CheckForTranslations(input_api, output_api):
    shared_keywords = ['i18n(']
    html_keywords = shared_keywords + ['$118n{']
    js_keywords = shared_keywords + ['I18nBehavior', 'loadTimeData.']
  
    errors = []
  
    for f in input_api.AffectedFiles():
      local_path = f.LocalPath()
      if local_path.endswith('i18n_behavior.js'):
        continue
  
      keywords = None
      if local_path.endswith('.js'):
        keywords = js_keywords
      elif local_path.endswith('.html'):
        keywords = html_keywords
  
      if not keywords:
        continue
  
      for lnum, line in f.ChangedContents():
        if any(line for keyword in keywords if keyword in line):
          errors.append("%s:%d\n%s" % (f.LocalPath(), lnum, line))
  
    if not errors:
      return []
  
    return [output_api.PresubmitError("\n".join(errors) + """
  
  Don't embed translations directly in shared UI code. Instead, inject your
  translation from the place using the shared code. For an example: see
  <cr-dialog>#closeText (http://bit.ly/2eLEsqh).""")]
  
  
  def _CommonChecks(input_api, output_api):
    results = []
    results += _CheckForTranslations(input_api, output_api)
    results += input_api.canned_checks.CheckPatchFormatted(input_api, output_api)
    return results
  