old_contents: # Copyright (C) 2018 The Android Open Source Project
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #      http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  
  import subprocess
  from os.path import relpath
  
  
  def CheckChange(input, output):
    results = []
    results += CheckTslint(input, output)
    return results
  
  
  def CheckChangeOnUpload(input_api, output_api):
    return CheckChange(input_api, output_api)
  
  
  def CheckChangeOnCommit(input_api, output_api):
    return CheckChange(input_api, output_api)
  
  
  def CheckTslint(input_api, output_api):
    path = input_api.os_path
    ui_path = input_api.PresubmitLocalPath()
    node = path.join(ui_path, 'node')
    tslint = path.join(ui_path, 'node_modules', '.bin', 'tslint')
  
    if not path.exists(tslint):
      repo_root = input_api.change.RepositoryRoot()
      install_path = path.join(repo_root, 'tools', 'install-build-deps')
      return [
          output_api.PresubmitError("Tslint not found. Please first run\n" +
                                    "$ {0} --ui".format(install_path))
      ]
  
    # Some tslint rules require type information and thus need the whole
    # project. We therefore call tslint on the whole project instead of only the
    # changed files. It is possible to break tslint on files that was not
    # changed by changing the type of an object.
    if subprocess.call(
        [node, tslint, '--project', ui_path, '--format', 'codeFrame']):
      return [
          output_api.PresubmitError("""\
  There were tslint errors. You may be able to fix some of them using
  $ {} {} --project {} --fix""".format(relpath(node), relpath(tslint), ui_path))
      ]
    return []
  
new_contents: # Copyright (C) 2018 The Android Open Source Project
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #      http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  
  import subprocess
  from os.path import relpath
  
  
  def CheckChange(input, output):
    results = []
    results += CheckTslint(input, output)
    return results
  
  
  def CheckChangeOnUpload(input_api, output_api):
    return CheckChange(input_api, output_api)
  
  
  def CheckChangeOnCommit(input_api, output_api):
    return CheckChange(input_api, output_api)
  
  
  def CheckTslint(input_api, output_api):
    path = input_api.os_path
    ui_path = input_api.PresubmitLocalPath()
    node = path.join(ui_path, 'node')
    tslint = path.join(ui_path, 'node_modules', '.bin', 'tslint')
  
    if not path.exists(tslint):
      repo_root = input_api.change.RepositoryRoot()
      install_path = path.join(repo_root, 'tools', 'install-build-deps')
      return [
          output_api.PresubmitError("Tslint not found. Please first run\n" +
                                    "$ {0} --ui".format(install_path))
      ]
  
    # Some tslint rules require type information and thus need the whole
    # project. We therefore call tslint on the whole project instead of only the
    # changed files. It is possible to break tslint on files that was not
    # changed by changing the type of an object.
    if subprocess.call(
        [node, tslint, '--project', ui_path, '--format', 'codeFrame']):
      return [
          output_api.PresubmitError("""\
  There were tslint errors. You may be able to fix some of them using
  $ {} {} --project {} --fix
  
  If this is unexpected: did you remember to do a UI build before running the
  presubmit?""".format(relpath(node), relpath(tslint), ui_path))
      ]
    return []
  
subject: Improve tslint presubmit message.