Support generating secondary OTAs from directories

  target_file = common.MakeTempFile(prefix="targetfiles-", suffix=".zip")

  target_zip = zipfile.ZipFile(target_file, 'w', allowZip64=True)

  with zipfile.ZipFile(input_file, 'r', allowZip64=True) as input_zip:

    infolist = input_zip.infolist()

  input_tmp = common.UnzipTemp(input_file, UNZIP_PATTERN)

  for info in infolist:

    unzipped_file = os.path.join(input_tmp, *info.filename.split('/'))

    if info.filename == 'IMAGES/system_other.img':

  fileslist = []

  for (root, dirs, files) in os.walk(input_file):

    root = root.lstrip(input_file).lstrip("/")

    fileslist.extend([os.path.join(root, d) for d in dirs])

    fileslist.extend([os.path.join(root, d) for d in files])

  input_tmp = input_file

  for filename in fileslist:

    unzipped_file = os.path.join(input_tmp, *filename.split('/'))

    if filename == 'IMAGES/system_other.img':

      common.ZipWrite(target_zip, unzipped_file, arcname='IMAGES/system.img')

    # Primary images and friends need to be skipped explicitly.

    elif info.filename in ('IMAGES/system.img',

    elif filename in ('IMAGES/system.img',

                      'IMAGES/system.map'):

      pass

    # Copy images that are not in SECONDARY_PAYLOAD_SKIPPED_IMAGES.

    elif info.filename.startswith(('IMAGES/', 'RADIO/')):

      image_name = os.path.basename(info.filename)

    elif filename.startswith(('IMAGES/', 'RADIO/')):

      image_name = os.path.basename(filename)

      if image_name not in ['{}.img'.format(partition) for partition in

                            SECONDARY_PAYLOAD_SKIPPED_IMAGES]:

        common.ZipWrite(target_zip, unzipped_file, arcname=info.filename)

        common.ZipWrite(target_zip, unzipped_file, arcname=filename)

    # Skip copying the postinstall config if requested.

    elif skip_postinstall and info.filename == POSTINSTALL_CONFIG:

    elif skip_postinstall and filename == POSTINSTALL_CONFIG:

      pass

    elif info.filename.startswith('META/'):

    elif filename.startswith('META/'):

      # Remove the unnecessary partitions for secondary images from the

      # ab_partitions file.

      if info.filename == AB_PARTITIONS:

      if filename == AB_PARTITIONS:

        with open(unzipped_file) as f:

          partition_list = f.read().splitlines()

        partition_list = [partition for partition in partition_list if partition

                          and partition not in SECONDARY_PAYLOAD_SKIPPED_IMAGES]

        common.ZipWriteStr(target_zip, info.filename,

        common.ZipWriteStr(target_zip, filename,

                           '\n'.join(partition_list))

      # Remove the unnecessary partitions from the dynamic partitions list.

      elif (info.filename == 'META/misc_info.txt' or

            info.filename == DYNAMIC_PARTITION_INFO):

      elif (filename == 'META/misc_info.txt' or

            filename == DYNAMIC_PARTITION_INFO):

        modified_info = GetInfoForSecondaryImages(unzipped_file)

        common.ZipWriteStr(target_zip, info.filename, modified_info)

        common.ZipWriteStr(target_zip, filename, modified_info)

      else:

        common.ZipWrite(target_zip, unzipped_file, arcname=info.filename)

        common.ZipWrite(target_zip, unzipped_file, arcname=filename)

  common.ZipClose(target_zip)