PRESUBMIT.py

# Copyright (c) 2021, Google Inc. All rights reserved.
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"""Top-level presubmit script for libwebm.

See https://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts for
details on the presubmit API built into depot_tools.
"""
import subprocess2

USE_PYTHON3 = True
_INCLUDE_BASH_FILES_ONLY = [r".*\.sh$"]
_INCLUDE_SOURCE_FILES_ONLY = [r".*\.(c|cc|[hc]pp|h)$"]
_LIBWEBM_MAX_LINE_LENGTH = 80


def _CheckChangeLintsClean(input_api, output_api):
  """Makes sure that libwebm/ code is cpplint clean."""
  sources = lambda x: input_api.FilterSourceFile(
      x, files_to_check=_INCLUDE_SOURCE_FILES_ONLY, files_to_skip=None)
  return input_api.canned_checks.CheckChangeLintsClean(input_api, output_api,
                                                       sources)


def _RunShellCheckCmd(input_api, output_api, bash_file):
  """shellcheck command wrapper."""
  cmd = ["shellcheck", "-x", "-oall", "-sbash", bash_file]
  name = "Check %s file." % bash_file
  start = input_api.time.time()
  subprocess2.communicate(["shellcheck", "--version"])
  output, rc = subprocess2.communicate(
      cmd, stdout=None, stderr=subprocess2.PIPE, universal_newlines=True)
  duration = input_api.time.time() - start
  if rc == 0:
    return output_api.PresubmitResult("%s\n%s (%4.2fs)\n" %
                                      (name, " ".join(cmd), duration))
  return output_api.PresubmitError("%s\n%s (%4.2fs) failed\n%s" %
                                   (name, " ".join(cmd), duration, output[1]))


def _CheckChangedShellCheckClean(input_api, output_api):
  """Ensure shell scripts are clean."""
  bash_sources = lambda x: input_api.FilterSourceFile(
      x, files_to_check=_INCLUDE_BASH_FILES_ONLY, files_to_skip=None)

  affected_bash_files = input_api.change.AffectedFiles(file_filter=bash_sources)
  results = [
      _RunShellCheckCmd(input_api, output_api, bash_file.AbsoluteLocalPath())
      for bash_file in affected_bash_files
  ]
  return results


def _CommonChecks(input_api, output_api):
  results = []
  results.extend(
      input_api.canned_checks.CheckChangeHasNoCrAndHasOnlyOneEol(
          input_api, output_api))
  results.extend(
      input_api.canned_checks.CheckChangeHasNoTabs(input_api, output_api))
  results.extend(
      input_api.canned_checks.CheckChangeHasNoStrayWhitespace(
          input_api, output_api))
  results.extend(
      input_api.canned_checks.CheckLongLines(
          input_api, output_api, maxlen=_LIBWEBM_MAX_LINE_LENGTH))
  results.extend(
      input_api.canned_checks.CheckPatchFormatted(
          input_api,
          output_api,
          check_clang_format=True,
          check_python=True,
          result_factory=output_api.PresubmitError))
  return results


def CheckChangeOnUpload(input_api, output_api):
  results = []
  results.extend(_CommonChecks(input_api, output_api))
  results.extend(_CheckChangeLintsClean(input_api, output_api))
  results.extend(_CheckChangedShellCheckClean(input_api, output_api))
  return results


def CheckChangeOnCommit(input_api, output_api):
  results = []
  results.extend(_CommonChecks(input_api, output_api))
  results.extend(_CheckChangeLintsClean(input_api, output_api))
  results.extend(_CheckChangedShellCheckClean(input_api, output_api))
  return results