Merge "Use python based unzip function for portability"

        archvie. Non-matching patterns will be filtered out. If there's no match

        after the filtering, no file will be unzipped.

  """

  cmd = ["unzip", "-o", "-q", filename, "-d", dirname]

  if patterns is not None:

  with zipfile.ZipFile(filename, allowZip64=True, mode="r") as input_zip:

    # Filter out non-matching patterns. unzip will complain otherwise.

    with zipfile.ZipFile(filename, allowZip64=True) as input_zip:

    if patterns is not None:

      names = input_zip.namelist()

    filtered = [

        pattern for pattern in patterns if fnmatch.filter(names, pattern)]

      filtered = [name for name in names if any(

          [fnmatch.fnmatch(name, p) for p in patterns])]

      # There isn't any matching files. Don't unzip anything.

      if not filtered:

        return

    cmd.extend(filtered)

  RunAndCheckOutput(cmd)

      input_zip.extractall(dirname, filtered)

    else:

      input_zip.extractall(dirname)

def UnzipTemp(filename, patterns=None):