def actool_filtering()

in tools/xctoolrunner/xctoolrunner.py [0:0]

• 38 lines of code
• 12 McCabe index (conditional complexity)

def actool_filtering(tool_exit_status, raw_stdout, raw_stderr):
  """Filter the stdout messages from "actool".

  Args:
    tool_exit_status: The exit status of "xcrun actool".
    raw_stdout: This is the unmodified stdout captured from "xcrun actool".
    raw_stderr: This is the unmodified stderr captured from "xcrun actool".

  Returns:
    A tuple of the filtered stdout and strerr.
  """
  section_header = re.compile("^/\\* ([^ ]+) \\*/$")

  excluded_sections = ["com.apple.actool.compilation-results"]

  spurious_patterns = [
      re.compile(x) for x in [
          r"\[\]\[ipad\]\[76x76\]\[\]\[\]\[1x\]\[\]\[\]: notice: \(null\)",
          r"\[\]\[ipad\]\[76x76\]\[\]\[\]\[1x\]\[\]\[\]: notice: 76x76@1x app "
          r"icons only apply to iPad apps targeting releases of iOS prior to "
          r"10\.0\.",
      ]
  ]

  def is_spurious_message(line):
    for pattern in spurious_patterns:
      match = pattern.search(line)
      if match is not None:
        return True
    return False

  output = []
  current_section = None
  data_in_section = False

  for line in raw_stdout.splitlines():
    header_match = section_header.search(line)

    if header_match:
      data_in_section = False
      current_section = header_match.group(1)
      continue

    if not current_section:
      output.append(line + "\n")
    elif current_section not in excluded_sections:
      if is_spurious_message(line):
        continue

      if not data_in_section:
        data_in_section = True
        output.append("/* %s */\n" % current_section)

      output.append(line + "\n")

  # Some of the time, in a successful run, actool reports on stderr some
  # internal assertions and ask "Please file a bug report with Apple", but
  # it isn't clear that there is really a problem. Since everything else
  # (warnings about assets, etc.) is reported on stdout, just drop stderr
  # on successful runs.
  if tool_exit_status == 0:
    raw_stderr = None

  return ("".join(output), raw_stderr)